| 宮崎 隆彦（みやざき たかひこ） | データ更新日：2023.11.27 |
教授 ／
総合理工学研究院
環境理工学部門
流動熱工学
| 1. | Muhammad Sultan, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Valeriy S. Maisotsenko, Steady-state Analysis on Thermally Driven Adsorption Air-conditioning System for Agricultural Greenhouses, International Conference on Sustainable Design, Engineering and Construction, ICSDEC 2015, 2015.01, [URL], In the present study, water vapor adsorption onto silica-gel, activated carbon powder (ACP) and activated carbon fiber (ACF) has been experimentally measured at 20 °C, 30 °C and 50 °C. The adsorption data is fitted with Guggenheim-Anderson-De Boer and Dubinin-Astakhov adsorption models for silica-gel and ACP/ACF, respectively. Steady-state moisture cycled (MCSS) is determined for greenhouse demand category-I, II and III which are based on 60%, 40% and 20% relative humidity of dehumidified air, respectively. The ACP and ACF enable maximum MCSS for demand category-I and II, respectively. However, the silica-gel is found the only applicable adsorbent for demand category-III.. |
| 2. | Muhammad Kashif, Takahiko Miyazaki, Muhammad Sultan, Zahid Mahmood Khan, Muhammad H. Mahmood, Investigation of Maisotsenko Cycle (M-cycle) Air-Conditioning System for Multan(Pakistan), 2017 International Conference on Energy Conservation and Efficiency, ICECE 2017, 2017.06, [URL], This study investigates the applicability of Maisotsenko cycle evaporative cooling system for climatic conditions of Multan region (Pakistan). The study also provides comparison of (Maisotsenko-cycle) M-Cycle based system with other evaporative cooling systems. An experimental system of M-Cycle has been setup and experiments are conducted for various ambient air conditions. The data has been analyzed, and based on the analyses the performance of the proposed M-cycle system has been investigated for summer (April to September) climatic conditions of Multan region (Pakistan). It has been found that the proposed system can provide the useful air-conditioning effect for Multan climate conditions provided that the ambient air relative humidity does not exceed 60%. The system's applicability is found limited in humid conditions, which is due to nature of M-cycle operation.. |
| 3. | Shazia Hanif, Muhammad Sultan, Takahiko Miyazaki, Shigeru Koyama, Evaluation of solid desiccant drying system for drying grains, 9th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2018, 2018.01, Present study provides the applicability of desiccant drying system (DDS) for the drying of freshly harvested cereals grains in order to remove the moisture and safe level storage. Drying air conditions including the temperature and humidity affect the quality and appearance of the dried product. High temperature and higher humidity cause to loss of nutrient and color. Control of the latent load of drying air prior to use for drying seems more effective approach towards delicate and temperature sensitive grains like seeds of crop. DDS remove the moisture from the drying air and make it possible to dry at low temperature and low humidity. In present work the pertinence of DDS with two desiccant materials LiCl and Silica gel were analyzed. Drying of grains (wheat and rice) is studied for regeneration temperature 50-80ºC. Results showed that in case of desiccant material LiCl, process air temperature is higher and humidity is lowers as compared to the silica gel. Drying air potential per watt also showed that desiccant material LiCl found more economical to use as compared to silica gel for all range of regeneration temperature. However for different type of grains, there is optimum regeneration temperatures that give maximum drying potential per watt. For wheat and corn optimum regeneration temperature range found was 55-60ºC whereas for barly and rice was above 60ºC. Regarding the appropriate desiccant material used, LiCl was found appropriate choice for economical point of view however silica gel is appropriate choice for second approach.. |
| 4. | Indri Yaningsih, Agung Tri Wijayanta, Takahiko Miyazaki, Shigeru Koyama, Effect of desorption temperature on performance of the desiccant dehumidification system, 9th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2018, 2018.01, Adsorption dehumidification is gained extensive consideration as an alternative for air conditioning devices. Choosing the appropriate parameters is necessary to improve the performance of the system. In this study, we performed the impact of desorption air temperature on the desiccant ability and thermal performance of desiccant dehumidification (DSCDH) system. The test section was a honeycomb desiccant block made of polymer. Low desorption air temperatures of 35ºC, 45ºC, 55ºC and 65ºC were experimentally investigated under a maintained adsorption air temperature of 20ºC. The mass flow rates of the air and time ratio for desorption and adsorption were remained constant in the value of 0.1 kg/s at 60 minutes for desorption and 120 minutes adsorption. As the results, we found that the thermal performance decreased with the rise of desorption air temperature. In contrary, the dehumidification ability was enhanced with the increased of desorption air temperature. In conclusion, the high desorption air temperature gives insignificant effect on the system performance. On the other hand, it is noteworthy on the dehumidification ability of the system. The thermal performance of the system was found in the values of 0.62, 0.44, 0.35 and 0.29 for desorption temperatures of 35ºC, 45ºC, 55ºC and 65ºC, respectively.. |
| 5. | Sho Fukuda, Shohei Oishi, Teppei Tanoura, Takahiko Miyazaki, Nobuo Takata, Shigeru Koyama, Condensation heat transfer of R1234ze(Z) in the vertical channels, 9th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2018, 2018.01, Recently, the development of high temperature heat pump systems for heat recovery from industrial waste heat below 100 °C is one of important subjects in order to reduce primary energy consumption. However, in order to develop such systems, it is indispensable to use an environmentally acceptable refrigerant, highly efficient heat exchangers and highly efficient compressors. From this viewpoint, in the present study, the condensation of low GWP refrigerant R1234ze(Z) in vertical channels is investigated experimentally in order to establish optimum design method of plate-fin heat exchanger. Two type of fins are used in the experiment, one is plane fin, another one is serrated fin. In the test channel, the test refrigerant flows downward, while the compressed cooling water flows upward. The local heat transfer characteristics are measured using thermocouples, heat flux sensors and pressure transducers. Also, the experimental results are compared with correlation equation that are composed free convection condensation. As the results, it clarified that heat transfer characteristic in plate fin heat exchanger are different according to difference in fin shapes. The heat transfer characteristics in plate-fin heat exchanger, at low quality area, are phenomenon that is near to free convection condensation.. |
| 6. | Hassan Niaz, Muhammad Sultan, Takahiko Miyazaki, Zahid M. Khan, Study on Desiccant Air-Conditioning System for Livestock Application in Pakistan, 2nd International Conference on Energy Conservation and Efficiency, ICECE 2018, 2018.11, [URL], Air-conditioning should be considered as a basic need in developing countries like Pakistan. It is not only necessary for humans but also for agriculture sector especially for thermal comfort of livestock. Moreover, air-conditioning for the sake of livestock applications is almost negligible in developing countries like Pakistan. In this regard, many direct evaporative cooling systems are used conventionally in Pakistan, however, these systems are not feasible in monsoon season and in the humid areas of Pakistan. Therefore, desiccant based air-conditioning (D-AC) is a very promising solution for this problem. In this study, a comprehensive summary of the D-AC system supported by Maisotsenko-cycle based evaporative cooling and applicability of this system is discussed for livestock application in Pakistan. The requirements of humidity and temperature which are ideally required for thermal comfort of the livestock is represented on psychrometric chart. Different conditions of the air have been checked for temperature humidity index measurement i.e., ambient air and processed air through desiccant air conditioning system for climatic conditions for two major cities of Pakistan (Multan and Karachi). Moreover, some analyses have been concluded to examine the performance of D-AC system supported by M-cycle unit and crisscross its practicability for the studied region. Results express that M-cycle supported D-AC system can be a sustainable AC system for humid and hot climatic conditions of Pakistan. While the standalone D-AC system is good for humid but relatively lesser hot regions of Pakistan where temperature control is not so crucial.. |
| 7. | Oleksii Drakhnia, Dmytro Buyadgie, Olexiy Buyadgie, Takahiko Miyazaki, Valeriy Maisotsenko, Andrei Chamchine, Ejector based climate control systems with heat and mass recuperation through the Maisotsenko cycle, 25th IIR International Congress of Refrigeration, ICR 2019, 2019.01, [URL], Electricity remains the main source of energy for conventional air-conditioning systems, while natural gas - is traditionally utilized for space heating. In both cases the thermodynamic processes are inefficient, as high-grade energy wastes its potential for the processes close to ambient temperatures. The paper describes the methods of multiplication of high, middle and low-grade heat to maximize the effect of space cooling and heating by combining thermally-driven ejector system with the heat recuperation process in the Maisotsenko cycle Heat and Mass Exchanger (HMX). Such a comprehensive and cost-efficient solution for space heating and cooling will help to lower the environmental loads at least twofold, save fossil fuels by 25-30%, displace 100% of the inhaled air at no extra cost and reduce by at least 10 times the energy consumption in the most intensive sector at the expense of the increased efficiency of the proposed technology over the existing systems.. |
| 8. | Sho Fukuda, Takahiko Miyazaki, Nobuo Takata, Shigeru Koyama, Effects of cooling method for condensation heat transfer in plate-fin heat exchanger, 25th IIR International Congress of Refrigeration, ICR 2019, 2019.01, [URL], Recently, the development of high temperature heat pump systems for heat recovery from industrial waste heat below 100 °C is one of important subjects to reduce primary energy consumption. However, in order to develop such systems, it is indispensable to use an environmentally acceptable refrigerant, highly efficient heat exchangers and highly efficient compressors. From this viewpoint, in the present study, the condensation of low GWP refrigerant R1234ze(Z) in vertical channels is investigated experimentally in order to establish optimum design method of plate-fin heat exchanger. Then, heat transfer coefficients are measured by two type cooling methods. One type is one side cooling method, another type is both cooling method. As the results, the heat transfer coefficient in consideration of fin efficiency of one side cooling method is higher than that of both cooling method in high quality.. |
| 9. | Ahmad Imam Rifa'I, Muhammad Faisal Hasan, Budi Kristiawan, Agung Tri Wijayanta, Takahiko Miyazaki, Thu Kyaw, Koji Enoki, Experimental study of heat transfer enhancement and pressure drop using TiO 2 /distilled water nanofluid inside counter flow double tube heat exchanger, 4th International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering, ICIMECE 2018, 2019.04, [URL], Nowadays nanofluids are widely used for heat transfer enhancement. Nanometer-sized particles added to base fluid enhance the thermal conductivity and thus increase the heat transfer rate. In the present study TiO 2 nanoparticle with the average diameter, 21 nm is used. Titanium dioxide (TiO 2 ) nanofluid prepared by dispersing nanoparticles in distilled water using the two- step method with volume concentration (0.05% - 0.3%), has been investigated. The force convective heat transfer coefficient and friction factor of the TiO 2 /Distilled water nanofluid with different volume concentration and Reynolds number for flow in a counterflow double tube heat exchanger are studied in this research. The result shows that the convective heat transfer coefficient of nanofluid is higher than base fluid for the same mass flow rate and same inlet temperature of nanofluid. The Nusselt number increases with Reynolds number and volume concentration TiO 2 /Distilled water of nanofluid. Meanwhile, micro-fin tube increases pressure drop in the flow path.. |
| 10. | Indri Yaningsih, Agung Tri Wijayanta, Takahiko Miyazaki, Shigeru Koyama, Desiccant dehumidification system for low desorption temperature, 4th International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering, ICIMECE 2018, 2019.04, [URL], Controlling the temperature and humidity is important to achieve a comfortable space for occupants. Numerous studies have shown that the desiccant air conditioning system offered great potential to solve this problem. However, to guaranty the continuous working of the system, desiccant air conditioning is required a regeneration process which always needs a high temperature. Most literature has shown that its required desorption temperature more than 60°C. From this motivation, with the humidity control consideration, in this present work, we performed an experimental investigation on desiccant dehumidification system for low desorption temperature. The aim of this study is to evaluate the capabilities of the desiccant system as a dehumidifier particularly focus on the dehumidifying rate and relative humidity limitation. The system was developed as a solid desiccant block which made of polymer material. The ratio between the adsorption and desorption area was equal to control the constant value of the mass flow rate of 0.1 kg/s. The alternating process between the desorption and adsorption phases was controlled by switching the time for each process 60 min and 120 min, for desorption and adsorption, respectively. The desorption temperatures were varied in the value of 35°C, 45°C, and 55°C. Adsorption temperature was introduced in the value of 20°C for all experimental conditions. The results show that a low desorption temperature still had great potential as a dehumidifier system. The dehumidifying rate increased with the increase of desorption temperature. The dehumidifying rates provided 0.34 g/s, 0.84 g/s and 1.12 g/s for desorption temperatures of 35°C, 45°C, and 55°C, respectively. The ability of the desiccant to reduce the humidity also increased with the increase of desorption temperature. For the lowest desorption temperature, even though its only at 35°C, it can reduce the relative humidity up to 20%.. |
| 11. | Konosuke Yokoyama, Takahiko Miyazaki, Shigeru Koyama, ANALYSIS AND MODELING OF ADSORPTION RATE WITH ETHANOL – ACTIVATED CARBON PAIRS, The 5th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants, 2017.04. |
| 12. | Frantisek Miksik, Takahiko Miyazaki, HIGH DENSITY THERMAL ENERGY STORAGE ADSORPTION MATERIALS, The 5th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants, 2017.04. |
| 13. | Takahiko Miyazaki, Shigeru Koyama, Simulation of Thermal Compression with Activated Carbon-Ethanol Pair, The 5th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants, 2017.04. |
| 14. | Fauziah Jerai, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Shinnosuke Maeda, Tadayoshi Onda, Tomohiro Maruyama, ANALYSIS ON ADSORBER PERFORMANCE FOR THERMALLY DRIVEN CHILLERS, Grand Renewable Energy 2014, 2014.05. |
| 15. | Takahiko Miyazakia, Shigeru Koyamaa, Valeriy S. Maisotsenko, THE MAISOTSENKO CYCLE AS A HEAT AND MASS RECOVERY DEVICE FOR CO-GENERATION, The 4th International Conference on Microgeneration and Related Technologies, 2015.10. |
| 16. | Dai Yamane, Takahiko Miyazaki, Shigeru Koyama, Norito Uchiyama, Yasuyuki Fujita, Hirotaka Dohi, Investigation of Optimal Working Fluid for Low-Temperature Driven Organic Rankine Cycles, The Ninth JSME-KSME Thermal and Fluids Engineering Conference, 2017.10. |
| 17. | Takahiko Miyazaki, Shigeru Koyama, Low Pressure Refrigeration Cycle Using CO2 Refrigerant by Adsorption Phenomena, The Eighth KSME-JSME Thermal and Fluids Engineering Conference, 2012.03. |
| 18. | F. Jerai, T. Miyazaki, B.B. Saha, Optimum cycle time for one bed operation of activated carbon-ethanol pair adsorption cooling system, 3rd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control, 2015.10. |
| 19. | D. Nakamoto, T. Miyazaki, B.B. Saha, S. Koyama, Study on adsorption characteristics of activated carbon - R 32 pair for heat pump application, 3rd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control, 2015.10. |
| 20. | M. Khanam, K. Ito, T. Miyazaki, Simulation of gas cooler of CO2 heat pump water heater for different tube geometries, 3rd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control, 2015.10. |
| 21. | Tsutomu SUMII, Takahiko MIYAZAKI, Bidyut Baran Saha, Shigeru KOYAMA, Study on adsorption heat pump cycles using activated carbon-R32 pair, International Workshop on Environment & Engineering 2014, 2014.11. |
| 22. | Hayato IMAMURA, Takahiko MIYAZAKI, I. I. El-Sharlawy, Bidyut Baran Saha, Shigeru KOYAMA, Dynamic simulation of adsorption heat pumps with surface treated activated carbon-ethanol pairs, International Workshop on Environment & Engineering 2014, 2014.11. |
| 23. | Muhammad H. Mahmood, Muhammad Sultan, Takahiko Miyazaki, Shigeru Koyama, Scope of nano/micro polymeric materials for farm air- conditioning applications, The 6th International Symposium on Micro and Nano Technology, 2017.03. |
| 24. | Kyaw Thu, Nami Takeda, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Tomohiro Maruyama, Shinnosuke Maeda, Toru Kawamata, Experimental Investigation On The Performance Of An Adsorption System Using Maxsorb III + Ethanol Pair, International Sorption Heat Pump Conference 2017, 2017.08. |
| 25. | Frantisek Miksik, Takahiko Miyazaki, Shigeru Koyama, Josef Kotlik, Adsorption And Desorption Of Water On Mesoporous Silica For Energy Storage, International Sorption Heat Pump Conference 2017, 2017.08. |
| 26. | Shazia Hanif, Takahiko Miyazaki, Shigeru Koyama, Performance Optimization And Economic Analysis Of Solar Based Desiccant Wheel Grain Dryer, International Sorption Heat Pump Conference 2017, 2017.08. |
| 27. | Budi Kristiawan, Samsul Kamal, Suhanan Suhanan, Yanuar Yanuar, Indri Yaningsih, Agung Tri Wijayanta, Takahiko Miyazaki, Shigeru Koyama, Enhanced Convective Heat Transfer Using Titania-Dispersed Nanofluids, International Sorption Heat Pump Conference 2017, 2017.08. |
| 28. | Indri Yaningsih, Agung Tri Wijayanta, Universitas Sebelas Maret, Indonesia, Takahiko Miyazaki, Shigeru Koyama, Impact Of Blockage Ratio On Performance Enhancement In The Presence Of Delta Winglet Vortex Generators, International Sorption Heat Pump Conference 2017, 2017.08. |
| 29. | Muhammad Sultan, Takahiko Miyazaki, Shigeru Koyama, Numerical Simulation Of Desiccant Air-Conditioning System For Agricultural Greenhouses, International Sorption Heat Pump Conference 2017, 2017.08. |
| 30. | Takahiko Miyazaki, Ibrahim Ibrahim El-Sharkawy, Bidyut Baran Saha, Shigeru Koyama, Performance Prediction of Adsorp- tion Heat Pump Systems Using Activated Carbon and R 32 Pair, International Sorption Heat Pump Conference 2014, 2014.04. |
| 31. | I Gusti Agung Bagus Wirajati, Yuki Ueda, Atsushi Akisawa, Takahiko Miyazaki, The Performance of Three Bed Re-heat Combined Adsorption Chiller, International Sorption Heat Pump Conference 2014, 2014.04. |
| 32. | T. Miyazaki, S. Koyama, B.B. Saha, Analytical Model of a Combined Adsorption Cooling and Mechanical Vapor Compression Refrigeration System, The 6th International Meeting on Advanced Thermofluids, 2013.08. |
| 33. | M. Sultan, T. Miyazaki, B.B. Saha, S. Koyama, V.S. Maisotsenko, Steady-state analysis on thermally driven adsorption air-conditioning system for agricultural greenhouses, International Conference on Sustainable Design, Engineering and Construction, 2015.05. |
| 34. | T. Miyazaki, I.I. EL-Sharkawy, B.B. Saha, S. Koyama, Study on Adsorption Cooling System — Fundamental to System Evaluation —, 2013.08. |
| 35. | Takahiko Miyazaki, Jin Miyawaki, Tomonori Ohba, Seong-Ho Yoon, Bidyut Baran Saha, Shigeru Koyama, Study toward High-Performance Thermally Driven Air-Conditioning Systems, International Conference on Engineering, Science and Nanotechnology 2016, 2016.08. |
| 36. | Xiaodi Zhang, Marzia Khanam, Takahiko Miyazaki, Heat and mass transfer analysis of adsorption heat-exchangers, The 6th International Conference on Cryogenics & Refrigeration, 2018.04. |
| 37. | Wu Weiyi, Drakhnia Oleksii, Buyadgie Olexiy, Miyazaki Takahiko, Buyadgie Dmytro, Efficiency analysis of the binary fluid ejector refrigerating system, The 6th International Conference on Cryogenics & Refrigeration, 2018.04. |
| 38. | Muhammad Hamid Mahmood, Muhammad Sultan, Takahiko Miyazaki, Shigeru Koyama, Low Cost Technologies for Agricultural Product Storage: Prospective and Challenges, Asian Conference on Thermal Sciences 2017, 2017.03. |
| 39. | Takahiko Miyazaki, Skander Jribi, Bidyut Baran Saha, Shigeru Koyama, Hyun-Sig Kil, Jin Miyawaki, Seong-Ho Yoon, Feasibility of Adsorption Refrigeration Systems with Carbon Dioxide as Refrigerant, Asian Conference on Thermal Sciences 2017, 2017.03. |
| 40. | Takahiko Miyazaki, Atsushi Akisawa, Takao Kashiwagi, Application of the particle swarm optimization to the design of heating and cooling plants of buildings, 3rd Asian Conference on Refrigeration and Air-Conditioning, ACRA 2006, 2006.05. |
| 41. | Atsushi Akisawa, Takayuki Sato, Takahiko Miyazaki, Takao Kashiwagi, Masao Hiramatsu, High concentration non-imaging Fresnel lens design with flat upper surface, High and Low Concentration for Solar Electric Applications II, 2007.12, Concentration PV systems are emerging recently and primary lenses have been developed for concentrating solar incident. Although the authors already produced 500X dome-shaped Fresnel lens, its production process was complicated because of the shape. The objective of this study is to investigate new design method for non-imaging Fresnel with flat upper surface so that the production can be easier. The design of prisms is formulated by means of nonlinear optimization to have maximum acceptance half angle with edge-ray principle. It is shown that designing more than 500X flat Fresnel lens is possible. The study also presents optimal condition of lens size requiring energy payback year to satisfy from the viewpoint of life cycle energy production and consumption.. |
| 42. | Takahiko Miyazaki, Masato Takaku, Yuki Ueda, Atsushi Akisawa, The cycle time optimization of a novel dual evaporator type three-bed adsorption chiller, 5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010, 2010.06. |
| 43. | Masakazu Sato, Takahiko Miyazaki, Yuki Ueda, Atsushi Akisawa, Improvement of adsorption heat exchangers by the enhancement of contact points between adsorbent and surface, 5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010, 2010, In this study, we are aiming at the improvement of heat exchangers for the adsorption heat pump. To achieve it, it is important to reduce thermal contact resistance between adsorbent and heat transfer surface. The thermal contact resistance can be reduced by increasing the contact points between adsorbents and heat transfer surface. To increase the contact points, four patterns of heat transfer surface geometry were examined. They are flat surface, V-shaped surface, oblong surface, and arc shaped surface, which have one, two, three and maximum contact points, respectively. The flat surface is the one used by the conventional heat exchanger, and the arc shaped surface is the ideal one. The heat conduction in the adsorbent (silica gel) bed was predicted by mathematical simulation. The structure of adsorbent bed was the hexagonal closest packing. For the fundamental analysis, a two dimensional model was developed, and steady-state simulation was performed. The results showed that V-shaped surface could increase heat flux by 10 %. In addition, the reduction of the thermal contact resistance was more effective on the thinner adsorbent layer than that on the thicker one.. |
| 44. | Atsushi Akisawa, Kazumichi Araki, Takahiko Miyazaki, Yuki Ueda, Toshitaka Takei, Application of ammonia-water absorption cycle to transfer cooling and heating at ambient temperature, 5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010, 2010, Utilizing wasted heat is an important issue to reduce primary fuel consumption. Because wasted heat sources are not always located near heat demand, it is required to transport thermal energy efficiently. The authors proposed an application of absorption cycle to heat transportation. In contrast with conventional chilled water transportation, the proposed absorption system has the generator-condenser pair at the heat source side while the evaporator-absorber pair at the demand side, and transfers absorption solutions between them. The solution transportation can transfer thermal energy which is converted into the difference of solution concentration. In this study, the proposed system named STA is expanded to supply heating from the absorber as well, which enhances the COP and reduces primary fuel consumption. STA combined with refuse incineration power generation was investigated to utilize steam from the incineration to provide power, cooling and heating simultaneously. The primary fuel substitution is estimated to be 1.7 times as much as that of power generation only system.. |
| 45. | Takahiko Miyazaki, K. Uddin, Shigeru Koyama, Dynamic simulation on a mechanical/thermal compression hybrid air-conditioning cycle, 6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012, In the study, we propose a hybrid air-conditioning cycle of mechanical vapour compression and thermal vapour compression. In the bottoming cycle, the refrigerant is compressed by a mechanical compressor from the evaporator to the medium pressure condenser. In the topping cycle, the other refrigerant is compressed by adsorption phenomena, where low temperature heat is used as a driving force, from the medium pressure condenser to the higher pressure condenser. R 1234ze is the refrigerant of the mechanical compression cycle, while CO2 is the refrigerant of the thermally compression cycle, where the activated carbon is the adorbent of CO2. Based on the measured adsorption kinetics of CO2 on the activated carbon, the system is modelled using MATLAB/SIMULINK. The dynamic characteristics of the system is investigated by simulation, and the reduction in mechanical power for the mechanical compressor is revealed.. |
| 46. | Takahiko Miyazaki, Ibrahim I. El-Sharkawy, Bidyut Baran Saha, Shigeru Koyama, Performance simulation of adsorption refrigeration/heat pump with silica gel-water and activated carbon-ethanol combinations, 7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014, The paper compared the performances of adsorption refrigeration/heat pump systems between the silica gel-water and the activated carbon-ethaonol as adsorbent-adsorbate combinations. The system performance was predicted in a wide range of heat source/sink by simulation. The adsorption isotherm and kinetics of the silica gel-water pair were taken from the literature, and those of the activated carbon-ethanol pair were measured by our group. The results revealed the suitable range for each combination for the application of space cooling, space heating, and hot water production.. |
| 47. | Ibrahim I. El-Sharkawy, Kutub Uddin, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Stefan K. Henninger, Characterization of adsorbent/refrigerant pairs for developing high performance adsorption cooling systems, 7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014, This paper presents an experimental investigation of adsorption isotherms and kinetics of promising adsorbent/refrigerant pairs towards the performance improvement of adsorption cooling systems. Adsorbents used in the present study are (i) parent Maxsorb III, (ii) KOH-H2 treated Maxsorb III, and (iii) a metal organic framework (MOF) material namely, MIL-101Cr. Adsorption isotherms and kinetics of the assorted pairs have been measured using magnetic suspension adsorption measurement unit (MSB-VG-S2). Experiments have been conducted across assorted adsorption temperatures that are useful for the operation of adsorption chillers. The Dubinin-Astakhov equation is used to fit adsorption isotherms whilst adsorption kinetics is presented by the Fickian diffusion model. Experimental results show that, among the assorted pairs, parent Maxsorb III/ethanol pair has the highest adsorption equilibrium uptake. However, the diffusional time constant of MIL-101Cr is found to be higher than that of other studied pairs.. |
| 48. | Muhammad Sultan, Ibrahim I. El-Sharkawy, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, A study on adsorption of water onto carbon based adsorbents, 7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014, In the present study, an experimental analysis for adsorption of water onto carbon based adsorbent i.e. activated carbon powder (AC) has been presented. An experimental system has been employed to measure adsorption isotherms of AC and RD type silica-gel with water. Experimental data for AC have been correlated using an appropriate adsorption isotherm model. The isosteric heat of adsorption of the assorted AC/water pair has been extracted from the present experimental data. On the basis of experimental investigation the greenhouse desiccant air-conditioning (DAC) is proposed as an appropriate water-sorption application for AC. A psychometric comparison of AC with silica-gel for greenhouse DAC is given which highlights the importance of carbon-water pair in the adsorption science.. |
| 49. | Skander Jribi, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Transient simulation of finned tube type adsorber employing activated carbon-ethanol as adsorbent-refrigerant pair, 24th IIR International Congress of Refrigeration, ICR 2015, Adsorption cooling systems are gaining more interest because of their energy savings and environment protection. Therefore, simulations of heat and mass transfers in the adsorbing/desorbing bed, main component of the system are necessary to achieve more favorable design and to improve the performance. This paper presents computational fluid dynamics (CFD) transient simulation of finned tube type adsorber/desorber bed at operating conditions of adsorption cooling system. Activated carbon powder (ACP) of type Maxsorb III was packed between the fins and ethanol was used as refrigerant. The model uses linear driving force kinetic and diffusion equation, in addition to mass, momentum and energy conservation equations. Simulation results show that temperature and pressure profiles agree fairly with experimental data at lower adsorbent thicknesses. Morover, we found that adsorption kinetics restricted the amount adsorbed to 45% of possible amount for adsorption/desorption time of 350 s. This study validated the mathematical model of the finned tube type adsorber/desorber bed and will permits, in the future, to evaluate and to enhance the performance of air-conditioning and refrigeration based adsorption systems.. |
| 50. | Muhammad Sultan, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Optimization of adsorption isotherm taxonomy for open-cycle desiccant air-conditioning applications, 24th IIR International Congress of Refrigeration, ICR 2015, 2015.01, Water vapor adsorption isotherm taxonomy of silica-gel based type-linear (fictitious), and four adsorbents enabling type-I, II, III, and V isotherms by means of International Union of Pure and Applied Chemistry (IUPAC) classification, are studied for desiccant air-conditioning (AC) applications. Ideal temperature and humidity zones for various AC applications are drawn on psychometric charts. Published adsorption data for studied adsorbents are fitted with the appropriate adsorption models. Ideal desiccant AC cycle is evaluated for AC applications and steady-state cycled moisture is estimated by means of adsorption isobars. Typelinear adsorption isotherm gives the maximum steady-state dehumidification performance for AC in industrial processes of matches manufacturing/drying/storage, rubber dipped goods storage, and photo studio drying room. However, adsorbents enabling type-V isotherm are found the optimum adsorbents for tobacco stemming/stripping/softening and optical lenses grinding. For industrial process-dipped surgical articles; adsorbents enabling type-I, type-II, and type-linear isotherms are resulted the optimum adsorbents under conditions of low ( 87°C) temperature regeneration, respectively.. |
| 51. | Ibrahim I. El-Sharkawy, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Adsorption characteristics of ethanol onto promising adsorbents for adsorption cooling applications, 24th IIR International Congress of Refrigeration, ICR 2015, 2015.01. |
| 52. | Kutub Uddin, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Alternative technology for cooling, 3rd International Conference on Green Energy and Technology, ICGET 2015, 2015.11, To provide thermal comfort to the human being many types of cooling technologies are available in the market. These technologies are more essential in the region where the average ambient temperature is high. But every system has some limitations especially for environmental aspect and energy consumption. Open literature shows the available commercial cooling technology used almost 45% of electricity consumed in a house. To keep the system running a lot of fossil fuels need to be burned as a result the volume of greenhouse gases into the air increases. This study introduces a new technology which is emerging as viable alternatives of conventional vapor-compression systems and is known as adsorption cooling system. This system is environment friendly since it uses natural refrigerants and it is driven by low temperature waste heat or solar energy that is why it can solve the existing challenge of global warming and energy crisis.. |
| 53. | Takahiko Miyazaki, Shigeru Koyama, Valeriy S. Maisotsenko, Simulation analysis of heat recovery humidifier, 8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016, The study investigated a highly effective humidifier employing the Maisotsenko-Cycle heat and mass recovery structure. The performance of the proposed humidifier is predicted by simulation and humidifying capacity was predicted.. |
| 54. | Skander Jribi, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Shinnosuke Maeda, Tomohiro Maruyama, Performance investigation of a finned tube adsorber employing activated carbon-ethanol pair, 8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016, This study presents 2D-axisymmetric heat and mass transfer simulations of a finned tube adsorber employing activated carbon-ethanol as the adsorbent-refrigerant pair. The simulation is carried out with Ansys-Fluent v16.2 and the mathematical model consists of mass, momentum and energy conservation equations as well as confirmed adsorption isotherms and adsorption kinetics from measured experimental data. The simulated temperatures at different adsorbent thicknesses agreed fairly with those measured in an adsorption chiller setup in our laboratory. Moreover performance investigation is performed for heating, cooling and evaporation temperature of 80, 30 and 15 °C, respectively. The cooling capacity reached 245.9 W/kgAC whereas COP is found to be 0.42. The CFD simulation will allow design and performance optimization of the finned tube adsorber for adsorption chiller applications. It can be extended also to different absorber-heat exchanger designs and different adsorbent-refrigerant pairs.. |
| 55. | Animesh Pal, Ibrahim I. El-Sharkawy, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama, Adsorption characteristics of consolidated adsorbents + ethanol pairs, 8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016, In this study, adsorption characteristics of ethanol onto consolidated composite adsorbents have been investigated experimentally. The prepared consolidated composites are combinations of highly porous activated carbon powder namely Maxsorb III, expanded graphite (EG) and binder with judiciously selected mass ratios. Samples with different packing densities and different compositions have been prepared. Adsorption equilibrium uptakes of ethanol onto the prepared samples have been measured. Experiments have been conducted across assorted adsorption temperatures that are useful for the operation of adsorption chillers. The Dubinin-Astakhov (D-A) and the Dubinin-Radushkevich (D-R) equations have been used to fit the adsorption isotherm data. Thermal conductivities of the prepared composites have been measured using a microflash apparatus. Results showed that the thermal conductivities of prepared samples are significantly higher than those of activated carbon powders.. |
| 56. | Skander Jribi, Takahiko Miyazaki, Shigeru Koyama, Bidyut Baran Saha, Shinnosuke Maeda, Tomohiro Maruyama, Non-isothermal adsorption rate model of activated carbon-ethanol pair for solar cooling applications estimated through CFD simulation, 7th International Renewable Energy Congress, IREC 2016, 2016.05, Adsorption cooling systems (ACS) are feasible alternative to vapor compression cooling system as they employ natural and benign refrigerants and could be driven by solar energy or waste heat. Performance optimization of ACS could be carried out using CFD simulations with lower cost and faster time comparing to experimental testing. One of the crucial parameters to obtain reliable CFD simulation results is the diffusion time constant of adsorption rate equation estimated from experimental data. This study presents transient CFD simulations of ethanol adsorption onto activated carbon powder of type Maxsorb III carried out by Ansys-Fluent v14.5 software using 2D-axisymmetric geometry. The mathematical model consists of mass, momentum and energy conservation equations as well as adsorption isotherm and adsorption kinetic equations implemented via user defined functions (UDFs). The conditions used were same as those employed in gravimetric adsorption analyzer that is 30°C, 2.25 kPa and 3.32 kPa for temperature, initial and inlet pressures, respectively. Through multiple CFD simulations, we estimated the appropriate diffusion time constant of non-isothermal linear driving force (LDF) equation which led to simulated adsorption uptakes agreeing fairly with those measured experimentally. The mathematical model employing non-isothermal LDF equation could be implemented to simulate the heat and mass transfer in large scale adsorption/desorption bed and to optimize the performance of activated carbon-ethanol based adsorption cooling system.. |
| 57. | Marzia Khanam, Skander Jribi, 宮崎 隆彦, 小山 繁, 小型吸着ヒートポンプの CFD シミュレーション による吸着熱交換器の性能解析, 日本冷凍空調学会年次大会2017, 2017.09. |
| 58. | 竹田那美, 宮崎 隆彦, 小山 繁, 丸山 智弘, 前多信之介, 川俣 達, 活性炭-エタノール系吸着蓄熱システムの実験的 検討, 日本冷凍空調学会年次大会2017, 2017.09. |
| 59. | Meng Xianhong, Jing Chengjun, Kyaw Thu, 宮崎隆彦, 小山 繁, ハニカムソーラーヒータの研究:その2アルミニウムハニカムソーラーヒータの効率と実験的研究, 第27回環境工学総合シンポジウム, 2017.07. |
| 60. | Muhammad Faisal Hasan, Kyaw Thu, 宮崎隆彦, 小山 繁, ハニカムソーラーヒータの研究:その1太陽熱の最大化のためのハニカム寸法の最適化, 第27回環境工学総合シンポジウム, 2017.07. |
| 61. | 宮崎隆彦, 小山繁, 活性炭を利用した蓄熱システムの性能予測, 日本機械学会九州支部第70期総会・講演会, 2017.03. |
| 62. | 山根 大, 宮崎隆彦, 小山繁, 内山典人, 藤田泰行, 土肥弘敬, 非共沸混合作動流体を用いたオーガニックランキンサイクルの熱力学的サイクルシミュレーション, 第21回動力・エネルギー技術シンポジウム, 2017.06. |
| 63. | 川上隼人, 宮崎隆彦, 小山繁, 内山典人, 藤田泰行, 土肥弘敬, 低温熱回収カリーナサイクルにおける熱源温度条件の影響, 第21回動力・エネルギー技術シンポジウム, 2017.06. |
| 64. | MIKSIK Frantisek, 宮崎隆彦, 小山 繁, Mesoporous silica materials for adsorption heat storage, 第54回日本伝熱シンポジウム, 2017.05. |
| 65. | 竹田那美, 李皓楠, 宮崎隆彦, 宮脇仁, THU Kyaw, SAHA Bidyut, 小山 繁, KIL Hyun-sig, 中林 康治, 尹聖昊, 丸山智弘, 前多信之介, 川俣達, 活性炭充填熱交換器による蒸発−吸着過程の実験的評価, 第54回日本伝熱シンポジウム, 2017.05. |
| 66. | 横山幸之介, 宮崎隆彦, 小山繁, 活性炭-エタノール系の吸着速度解析とモデル化, 第30回日本吸着学会研究発表会, 2016.11. |
| 67. | 横山幸之介, 宮崎隆彦, 小山繁, エタノール-活性炭系吸着冷凍機の同的シミュレーションに対する吸着速度モデルの影響, 第50回空気調和・冷凍連合講演会, 2017.04. |
| 68. | MAHMOOD Muhammad Hamid, 宮崎 隆彦, 小山 繁, 農業用貯蔵へのデシカント空調システムの応用, 日本冷凍空調学会年次大会2016, 2016.09. |
| 69. | 山根 大, 宮崎隆彦, 小山 繁, 内山典人, 前田典生, 土肥弘敬, 小温度差オーガニックランキンサイクルの最適作動媒体探索, 第26回環境工学総合シンポジウム, 2016.06. |
| 70. | Marzia Khanam, 宮崎隆彦, Bidyut Baran Saha, 小山 繁, 吸着式ヒートポンプ用熱交換器の最適形状の探索, 第26回環境工学総合シンポジウム, 2016.06. |
| 71. | Muhammad Hamid Mahmood, Muhammad Sultan, Takahiko Miyazaki, Shigeru Koyama, 農業用デシカント空調システムの実験的研究, 第21回動力・エネルギー技術シンポジウム, 2016.06. |
| 72. | 中本大志朗, 横山幸之介, 宮崎隆彦, SAHA Bidyut, 小山繁, 容量法による活性炭‐フロン系冷媒吸着測定のシミュレーション解析, 第53回日本伝熱シンポジウム, 2016.05. |
| 73. | Pal Animesh, El-Sharkawy Ibrahim, Miyazaki Takahiko, Saha Bidyut, Koyama Shigeru, Preparation and characterization of consolidated composite adsorbents for cooling application, 第53回日本伝熱シンポジウム, 2016.05. |
| 74. | 横山幸之介, 中本大志朗, 宮崎隆彦, 小山繁, Bidyut Baran Saha, 活性炭による高圧冷媒の吸着速度における温度および圧力依存性の解析, 第50回空気調和・冷凍連合講演会, 2016.04. |
| 75. | 宮崎 隆彦, El-Sharkawy Ibrahim, SAHA BIDYUT BARAN, 小山 繁, KIL HYUNSIG, Jin Miyawaki, 尹 聖昊, 吸着式ヒートポンプの性能向上を目指した材料開発とシステム研究の融合, 第16回西日本地区技術交流会, 2015.09. |
| 76. | 宮崎 隆彦, Valeriy S. Maisotsenko, 小山 繁, 除湿を伴う Maisotsenko サイクル空調システム の理論性能評価, 日本冷凍空調学会 年次大会2015, 2015.10. |
| 77. | El-Sharkawy Ibrahim, 宮崎 隆彦, SAHA BIDYUT BARAN, 小山 繁, Investigation of alternative adsorbent/refrigerant pairs for cooling application, 日本冷凍空調学会 年次大会2015, 2015.10. |
| 78. | JRIBI SKANDER, 宮崎 隆彦, Fauziah Jerai, SAHA BIDYUT BARAN, 小山 繁, CFD simulations of heat exchanging adsorber/desorber employing activated carbon-ethanol pair, 日本冷凍空調学会 年次大会2015, 2015.10. |
| 79. | Muhammad Hamid Mahmood, Muhammad Sultan, 宮崎 隆彦, 小山 繁, Evaluation of desiccant air conditioning applicability for agricultural sector of Pakistan, 日本冷凍空調学会 年次大会2015, 2015.10. |
| 80. | El-Sharkawy Ibrahim, 宮崎 隆彦, SAHA BIDYUT BARAN, 小山 繁, A study on phenol resin based adsorbent/ethanol pairs for cooling application, 第 52 回日本伝熱シンポジウム, 2015.06. |
| 81. | 宮崎 隆彦, 小山 繁, 吸着剤を用いた折り返し流路型熱交換器の熱・物質移動特性の予測, 第 52 回日本伝熱シンポジウム, 2015.06. |
| 82. | 李 皓楠, Fauziah Binti Jerai, 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, 前多 信之介, 恩田 忠義, 丸山 智弘, 活性炭素/エタノール系吸着冷凍サイクルの高性能化に関する研究, 第 20 回動力・エネルギー技術シンポジウム, 2015.06. |
| 83. | 中本 大志朗, 角井 務, 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, 容量法による吸着特性実験 ~吸着発熱による吸着速度への影響~, 第 20 回動力・エネルギー技術シンポジウム, 2015.06. |
| 84. | 宮崎 隆彦, 小山 繁, 吸着冷凍機内圧力変化の詳細シミュレーションに基づく性能解析, 第 49 回空気調和・冷凍連合講演会, 2015.04. |
| 85. | 宮崎 隆彦, 小山 繁, 吸着技術を利用した冷凍・空調システムの研究・活用動向, 第84回マリンエンジニアリング学術講演会, 2014.11. |
| 86. | 宮崎 隆彦, 小山 繁, シャハ ビデュット バラン, Theoretical analysis on energy saving air conditioning using activated carbons, 12th Korea-China-Japan Joint Symposium on Carbon Saves the Earth, 2014.12. |
| 87. | 宮崎 隆彦, 小山 繁, シャハ ビデュット バラン, Waste heat utilization by adsorption heat pumps, International Hydrogen Energy Development Forum 2015, Workshop on Thermal Issues for Hydrogen and Related Energy Systems, 2015.02. |
| 88. | El-Sharkawy Ibrahim, 宮崎 隆彦, シャハ ビデュット バラン, 小山 繁, Experimental investigation of ethanol adsorption onto Metal-Organic Frameworks for cooling appli- cation, 2014年度日本冷凍空調学会年次大会, 2014.09. |
| 89. | Pal Animesh, El-Sharkawy Ibrahim, Uddin Kutub, 宮崎 隆彦, シャハ ビデュット バラン, 小山 繁, 丸山智弘, 前多 信之介, 中村 崇, A study on adsorption of ethanol onto consolidated composite adsorbents for cooling application, 2014年度日本冷凍空調学会年次大会, 2014.09. |
| 90. | JRIBI SKANDER, Sultan Muhammad, El-Sharkawy Ibrahim, 宮崎 隆彦, シャハ ビデュット バラン, 小山 繁, 丸山智弘, 前多 信之介, 中村 崇, Experimental adsorption isotherms and adsorption cooling cycle performance of organic polymer sorbent-water pair, 2014年度日本冷凍空調学会年次大会, 2014.09. |
| 91. | 角井 務, 中本 大志朗, 宮崎 隆彦, シャハ ビデュット バラン, 小山 繁, 活性炭に対する R32の吸着速度解析, 2014年度日本冷凍空調学会年次大会, 2014.09. |
| 92. | Fauziah Jerai, Hayato Imamura, Takahiko Miyazaki, SAHA BIDYUT BARAN, Shigeru Koyama, Shinnesuke Maeda, Tadayoshi Onda, Tomohiro Maruyama, 粉末状活性炭素/エタノール系吸着式冷凍システムの性能に対する熱源温度の影響に関する実験的研究, 日本機械学会第19回動力・エネルギー技術シンポジウム, 2014.06. |
| 93. | 宮崎 隆彦, 松本 隼人, 小山 繁, El-Sharkawy Ibrahim, SAHA BIDYUT BARAN, 活性炭-HFC 冷媒の容量法吸着量測定に基づく吸着動特性の推定, 日本機械学会第19回動力・エネルギー技術シンポジウム, 2014.06. |
| 94. | 宮崎 隆彦, 小山 繁, 吉田兼大, ヒートポンプ・デシカント複合型農業用空調システムの冬期暖房除湿実験, 日本機械学会熱工学コンファレンス2013, 2013.10. |
| 95. | 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, Kutub Uddin, 今村駿斗, El-Sharkawy Ibrahim, 活性炭のエタノール吸着速度に関する実験的研究, 日本機械学会熱工学コンファレンス2013, 2013.10. |
| 96. | 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, Kutub Uddin, 尹 聖昊, 宮脇 仁, Kil Hyun Siq, 水素処理活性炭に対するエタノール吸着速度, 2013年度日本冷凍空調学会年次大会, 2013.09. |
| 97. | 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, Askalany Ahmed, Ismail Ibrahim M., 活性炭へのR410A の吸着等温線, 2013年度日本冷凍空調学会年次大会, 2013.09. |
| 98. | 宮崎 隆彦, 小山 繁, 松本隼人, SAHA BIDYUT BARAN, El-Sharkawy Ibrahim, アスカラニー アハメド, 活性炭に対するR32 の吸着特性の測定とシステム性能の予測, 2013年度日本冷凍空調学会年次大会, 2013.09. |
| 99. | 宮崎 隆彦, 小山 繁, Yoosa Pornpipat, Study on thermally driven desiccant air conditioning system under tropical climate, 日本機械学会 第18 回動力・エネルギー技術シンポジウム, 2013.06. |
| 100. | 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, Oh Seung Taek, Cycle time allocation effect on the performance of adsorption cooling systems, 日本機械学会 第18 回動力・エネルギー技術シンポジウム, 2013.06. |
| 101. | 宮崎 隆彦, 小山 繁, 低GWP 冷媒を用いた多段型吸着冷凍サイクルの静的解析, 日本機械学会 第18 回動力・エネルギー技術シンポジウム, 2013.06. |
| 102. | 宮崎 隆彦, 小山 繁, SAHA BIDYUT BARAN, 今村駿斗, 牧本直也, 活性炭によるエタノール平衡吸着量の測定と冷凍サイクルの性能評価, 第47 回空気調和・冷凍連合講演会, 2013.04. |
| 103. | 宮崎 隆彦, 小山 繁, 活性炭を利用した吸着式ヒートポンプの研究, 日本冷凍空調学会第13回西日本地区技術交流会, 2012.09. |
| 104. | 宮崎 隆彦, 小山 繁, 工藤智士, 吉田兼大, ヒートポンプ・デシカント複合型農業用空調システムの研究 第2報：温室環境下におけるデシカントブロックの性能評価, 日本機械学会熱工学コンファレンス2012, 2012.11. |
| 105. | 宮崎 隆彦, 小山 繁, 松本翔馬, 工藤智士, ヒートポンプ・デシカント複合型農業用空調システムの研究 第1報：シミュレーションによるシステム構成の検討, 日本機械学会熱工学コンファレンス2012, 2012.11. |
| 106. | 宮崎 隆彦, 小山 繁, Kutub Uddin, 活性炭-エタノール系吸着サイクルを用いたカスケード型ハイブリッドサイクルの性能解析, 日本冷凍空調学会2012年度年次大会, 2012.09. |
| 107. | 宮崎 隆彦, 小山 繁, 固定床型デシカント除湿と気化式冷却システムの連成シミュレーションによる性能解析, 日本冷凍空調学会2012年度年次大会, 2012.09. |
| 108. | 宮崎 隆彦, 寺尾勇太朗, 小山 繁, 吸着速度を考慮したバイナリー空調システムの性能解析, 日本機械学会第17回動力・エネルギー技術シンポジウム, 2012.06. |
| 109. | 宮崎隆彦, 大久保賢一, 秋澤 淳, 清水宣伯, 1 ベッド吸着冷凍サイクルによる圧縮冷凍サイクル凝縮器冷却効果の連成シミュレーション, 第46回空気調和・冷凍連合講演会, 2012.04. |
| 110. | 大久保賢一, 秋澤 淳, 宮崎隆彦, 清水宣伯, MATLAB-Simlink を利用した吸着冷凍サイクルのシミュレーション手法, 第46回空気調和・冷凍連合講演会, 2012.04. |
| 111. | 平山 薫, Thipjak Nualboonrueng, 宮崎隆彦, 上田祐樹, 秋澤 淳, 太陽電池集熱ハイブリッドシステムの省エネルギー性評価, 日本機械学会第21回環境工学総合シンポジウム2011, 2011.07. |
| 112. | 寺尾勇太朗, 宮崎隆彦, 小山 繁, 低GWP冷媒を作動媒体とした機械圧縮-熱圧縮カスケード冷凍サイクルの静的解析, 2011年度日本冷凍空調学会年次大会, 2011.09. |
| 113. | 宮崎隆彦, 寺尾勇太朗, 牧本直也, ビデュット バラン シャハ, 小山 繁, 二段蒸発型吸着冷凍機の静的解析による吸着剤-冷媒の検討, 2011年度日本冷凍空調学会年次大会, 2011.09. |
| 114. | 高久将人, 宮崎隆彦, 二階 勲, 上田祐樹, 秋澤 淳, メイソチェンコサイクルを組み合わせたヒートポンプ加熱湿式デシカント空調システムの性能評価, 2011年度日本冷凍空調学会年次大会, 2011.09. |
| 115. | 佐藤雅一, 宮崎隆彦, 上田祐樹, 秋澤 淳, CFDを用いた吸着層内シミュレーションによる接触熱抵抗低減効果の解析, 第45回空気調和・冷凍連合講演会, 2011.04. |
| 116. | 谷 優也, 宮崎隆彦, 上田祐樹, 秋澤 淳, 3ベッド二段蒸発型吸着冷凍サイクルの性能に対する吸脱着時間の影響, 第45回空気調和・冷凍連合講演会, 2011.04. |
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九大関連コンテンツ
QIR 九州大学学術情報リポジトリ システム情報科学研究院
総合理工学研究院
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