Kyushu University Academic Staff Educational and Research Activities Database
List of Presentations
SAEID JALILINASRABADY Last modified date:2022.06.28

Associate Professor / Department of Earth Resources Engineering / Faculty of Engineering

1. Alvin Kiprono Bett and Saeid Jalilinasrabady, Exergy Profile Analysis by Wellbore Simulation., 47th Workshop on Geothermal Reservoir Engineering, Stanford University, 2022.02, [URL].
2. Reiji Mizoguchi, Alvin Kiprono Bett, Saeid Jalilinasrabady, Optimum working fluid selection of proposed Takigami binary geothermal power plant., International Symposium on Earth Science and Technology 2021 (CINEST)., 2021.11.
3. Alvin Kiprono Bett, Reiji Mizoguchi, Saeid Jalilinasrabady, 13. Energy and exergy analysis of a single effect geothermal absorption chiller., International Symposium on Earth Science and Technology 2021 (CINEST)., 2021.11.
4. Ryota Asayama, Alvin Kiprono Bett and Saeid Jalilinasrabady, Optimization of geothermal power plant in Japan and Kenya depend on ambient temperature., International Symposium on Earth Science and Technology 2021 (CINEST)., 2021.11.
5. John Ngethe, Saeid Jalilinasrabady, Optimization of Geothermal Greenhouses Design for Kenyan Fresh-cut Flowers, 46th Workshop on Geothermal Reservoir Engineering, Stanford University, 2021.02.
6. Ngethe John, Saeid Jalilinasrabady, Analysis of Land Use Within Close Proximity of Menengai Geothermal Resource in Kenya via Remote Sensing, International Symposium on Earth Science and Technology, CINEST 2020, Fukuoka, Kyushu University, 2020.12.
7. John Ngethe and Saeid Jalilinasrabady, Potential of Cascaded Use of Geothermal Energy to Uplift Fish Production in Kenyan Aquaculture. , GRC Transactions, 2021.10, [URL].
8. Saeid Jalilinasrabady, Performance Evaluation of Geothermal Power Plants, GRC Transactions, 2021.10, [URL].
9. Alvin Kiprono Bett, Saeid Jalilinasrabady, Maria Zhahata, Geraldinne Malana, LCOE and Exergoeconomic analysis of Air-cooled Binary Power Plant, GRC Transactions, 2021.10, [URL].
10. Alvin Kiprono Bett and Saeid Jalilinasrabady. , Life Cycle Assessment of Geothermal Sources in Kenya, GRC Transactions, 2021.10, [URL].
11. Saeid JALILINASRABADY, Kohei OTSUKA, Ryuichi ITOI, Yuji OHYA, Upgrading Low Exergy Geothermal Resources to Higher Exergy Resources Applying Hybrid Power Generation System. , World Geothermal Congress (WGC 2020+1), 2021.04, [URL], In this research the solar chimney combined with wind power was investigated as a novel idea of hybrid power generation system. This system is designed for power generation with wind turbine, which has been placed in bottom of the chimney (tower). Wind blade circulates due to known phenomena of “hot air rises†because of temperature difference between lower and upper parts of the tower, which creates thermal updraft air. As long as thermal updraft is induced inside the tower by solar radiation, this system can produce electricity. This system requires wide area with acceptable solar radiation to maintain steady power production. Considering capital investment of proposed system, the efficiency is lower compare to that of other solar power generation methods. To overcome this disadvantage and to utilize low temperature geothermal resources, a new hybrid system was proposed that uses solar chimney idea, wind blade and geothermal heat source. Quantitative analysis of proposed system was performed to achieve basic ground for further developments. An experiment was designed and set up in small scale consists of tower and a pool containing hot water as a heat source. This paper describes outcomes of experiment and compares them to the results from quantitative analysis. .
12. Alvin K. BETT, Leonard K LANGAT, Eric K ROP and Saeid JALILINASRABADY, Optimization of Olkaria II Geothermal Brine for a Proposed Binary Unit by Energy and Exergy Analysis, World Geothermal Congress (WGC 2020+1), 2021.04, [URL], The paper presents the best working fluid to optimize the geothermal resource of Olkaria complex geothermal field in Kenya. The reinjected brine at 156oC with 206 kg/s is used to model, design and optimize basic binary unit using Engineering Equation Solver (EES) code for different working fluids. System optimization defines the guidelines in selection of working fluid and the configuration of the power plant. The objective functions of the paper are to optimize the system to get the highest power output. The design is constrained by the available separator parameters, by application of the first and second laws of thermodynamics. The power generation output from Olkaria II unit will have additional power to supply to the national grid. For the different working fluids studied the least power that can generated is 3,794 kWe using R152a fluid with the highest being application of R600a, 6,792 kWe. Addition of power from renewable source will also reduce the effect of CO2 emissions. Energy and exergy analysis is a powerful tool in decision making in power plant designs..
13. Gizem Elbaz, Tahsin BAÅžARAN, Saeid Jalilinasrabady, Fuel Consumption and Environmental Effect of Heating System Selection., World Geothermal Congress (WGC 2020+1), 2021.04, In this study, the amount of energy that is required, annual resource consumption and environmental impact were compared using four different energy sources as coal, fuel oil, gas and geothermal energy, for reference specified building, according to the city in three different heating zones in Turkey. Thermodynamic relations were used to specify the heat changes for any system. Design of the building and local climate were effective for the calculation of heating energy demand. The different energy requirements depending on the local conditions require the use of appropriate methods in building design. Therefore, Degree Day, Annual fuel consumption and CO2 emission approaches were used in order to make the mentioned comparisons. .
14. Alvin K. BETT, Eric K ROP, Saeid JALILINASRABADY and Ryuchi ITOI, Energy and Exergetic Analysis of a Proposed Olkaria I Binary Geothermal Power Plant, Naivasha, Kenya, World Geothermal Congress (WGC 2020+1), 2021.04, [URL], Olkaria I geothermal power plant in Kenya has an installation capacity of 45 MWe. This single-flash power plant has exergy waste of about 6 MWe in the separated brine. To maximize the geothermal resource, a binary unit using isobutane as a working fluid was developed and optimized using Engineers Equation Solver code. The paper presents the design and energy and exergy analysis of the proposed binary unit for the Olkaria I power plant. The designed binary plant has the potential of generating net turbine work of 2281 kW with plant efficiency of 10.81%, cycle efficiency of 9.87%, and overall utilization efficiency of 31.70%. The temperature of brine reinjected into the reservoir was set at 85 ï‚°C with exergy of 1763 kW. A Grassmann exergy flow diagram shows that exergy destruction is greatest in the condenser (12.08%) and least in the evaporator (8.99%). Energy and exergy analysis of a plant help to optimize available geothermal resources for maximum energy production..
15. George MURIGA, Saeid JALILINASRABARDY, Single and Double-Flash Cycle Design of Menengai Prospect Geothermal Power Plant, Nakuru- Kenya, World Geothermal Congress (WGC 2020+1), 2021.04, [URL], Our study evaluated the possible power output that can be obtained from a configuration of 15 production wells and one reinjection well in Menengai geothermal field by installing a single flash cycle power plant. Once the optimum conditions of the single flash model were determined, the same parameters were used as input for the double flash cycle design to investigate the possibility of obtaining a higher output compared to the single flash model. Engineering Equation Solver (EES) was used to solve the relevant mathematical equations. Results yielded that the double flash model gave more output of 113MW compared to the single flash that produced 108MW. Reinjection temperature for both models of 175 degC and 168 degC show minimal likelihood of there being heavy precipitate of polymer silicate in the brine line and reinjection well. Additionally, reinjection fluid mass for the double flash cycle is about 3kg/s compared to 160kg/s for the single flash cycle, a drastic decrease..
16. Seyed Zahed MOUSAVI, Saeid JALILINASRABADI, Geothermal Country Update Report of Iran (2015- 2020), World Geothermal Congress (WGC 2020+1), 2021.04, [URL], Iran is located on the Alpine- Himalayan orogenic belt, which has high geothermal potential. The first geothermal research and investigation in Iran started by ENEL in 1975, research and survey indicated that Iran has substantial geothermal potential, specifically in the mount Sabalan and mount Sahand (Azarbaijan) , mount Damavand and Khoy- Maku regions. The Renewable Energy Organization of Iran (SUNA) was established to justify priorities of the fields. As a result, mount Sabalan region was proposed for electric and direct use, and then detailed geological, geochemical and resistivity survey using MT, TEM and DC Schlumberger methods have been carried out by Kingston Morrison Ltd. Hence this area has been recognized as a promising selection for geothermal exploration drilling, and then the location of seven exploration wells were proposed in the area. The Sabalan geothermal project is expected to produce 5 MW electricity from its pilot plant, but meantime there are support from government towards direct use of geothermal energy through different projects and various private investor and users. Around 70 hot and mineralized natural springs exist in Sabalan that are mostly located in Meshkinshahr and Sarein areas in northern and southern parts of mount Sabalan,respectively. Most of the development has been achieved in geothermal direct use applications where 26 spas in Meshkinshahr and Sarein are used for balneological purposes (56 MWt). with huge thermal tourism capacity potential in Meshkinshahr and Sarein, the target is to increase the number of domestic and international visitors to 5 million and 250,000 people by theyear 2025, respectively.

17. Behnam RADMEHR, Saeid JALILI NASRABADI, Energy and Exergy Analysis of Sabalan Pilot Single Flash Geothermal Powerplant, World Geothermal Congress (WGC 2020+1), 2021.04, [URL], Following the changes in the SUNA's policy from the implementation and ownership of renewable energies projects to hand over them to private sector, and due to the lack of experience and interest of domestic companies, it was necessary for SUNA to perform the construction of a geothermal pilot powerplant to demonstrate the potential of the Sabalan geothermal reservoir and the capacity of drilled wells and to gain experience and introduce it to the private sector. For this purpose, a domestic company, using the experience of Italian consultant in the form of an EPC contract, has started to design and execute a pilot plant of 5 megawatts at well NWS-6 on the site of the Meshgin Shahr geothermal site. The main objectives of this study are: to develop thermodynamic model and Exergy analysis of the single flash cycle using in the pilot plant; pinpoint locations and quantities of Exergy losses and wastes; and to determine the optimum performance parameters of the main components. The first and second law efficiencies and the productivity of geothermal fluid will be determined for single flash system. The Engineering Equation Solver (EES) software was used for developing and analyzing mathematical models of energy and Exergy flows. Thermoeconomic analysis using obtained results can be considered for further work to help the decision makers..
18. Seyed Zahed MOUSAVI and Saeid JALILINASRABADY, An Update to Touristic Potential of Meshkinshahr Geothermal Resources, NW Iran, World Geothermal Congress (WGC 2020+1), 2021.04, [URL], Mehskinshahr city in Northwest of Iran is well known for its hot springs and geothermal manifestations. It has its own reputation for healthy and traditional hot springs and has been a tourist attraction for years. Natural mineral springs and geothermal hot springs have been source of gatherings and carry a nostalgic feeling for local people and visitors. These springs and water reserves present this area with a fantastic opportunity for further development as an international and national destination for natural spa tourism. Geothermal water and mineral springs have long been associated with improving mental and physical health through therapeutic bathing, relaxation and drinking enjoyment. This study describes the key characteristics of these geothermal water and mineral spring resources, providing an insight into the demand for services and the development potential of new and existing facilities in regional communities. The main aim of this paper is to determine the main tourism potential of natural geothermal resources in Meshkinshahr region, north of Sabalan mount, North-West of Iran..
19. Saeid Jalilinasrabady, Feasibility Study of Geothermal Direct Utilization in Kenya., 11th Incubation Webinar. Kyushu University-Geothermal Development Company (GDC) and Jomo Kenyatta University of Agriculture and Technology (JKUAT) joint seminar, 2020.12.
20. Minami Kai, Saeid Jalilinasrabady, Ryuichi Itoi , Numerical Modeling and Optimization of the Geo-Wind Hybrid Power Generation, International Symposium on Earth Science and Technology, CINEST 2020, Fukuoka, Kyushu University, 2020.12.
21. Alvin Kiprono Bett, Saeid Jalilinasrabady, Leonard K Langat, Exergonomic Analysis of Topping Unit at Olkaria IV Geothermal Power Plant, International Symposium on Earth Science and Technology, CINEST 2020, Fukuoka, Kyushu University, 2020.12.
22. Maria Zhahata Geraldinne Malana, Ariel Fronda, Saied Jalilinasrabady, Alvin Kiprono, Energy and exergy analysis of BN-06 wellhead geothermal power plant in province of Biliran, Philippines, Transactions-Geothermal Resources Council, 2020.10.
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24. John Ngethe, Saeid Jalilinasrabady,, Considering future feasible agricultural projects for direct use of geothermal energy at eburru geothermal field, Transactions-Geothermal Resources Council, 2020.10, [URL].
25. Saeid Jalilinasrabady, Sustainable Development of Geothermal Energy, NTU (National Taiwan University) –Kyushu University Colloquium, 2020.06.
26. M. Kai, Saeid Jalilinasrabady. R. Itoi, Cascade utilization of geothermal energy resources integrated with hybrid system, Annual Meeting of Geothermal Research Society of Japan, 2019.11.
27. M. Toyonaga, Saeid Jalilinasrabady, Optimum working-fluid for binary geothermal power plant, Annual Meeting of Geothermal Research Society of Japan, 2019.11.
28. A. Kiprono Bett, J. Ngethe, Bo Jin, Saeid Jalilinasrabady, Application of direct utilization of hot springs in Kenya; Majimoto, Mwananyamala and Homa-bay hot spring, Annual Meeting of Geothermal Research Society of Japan, 2019.11.
29. Jin Bo, Saeid Jalilinasrabady and Noorollahi Younes, Utilization of abandoned oil wells in geothermal applications, 41st New Zealand Geothermal Workshop, 2019.12.
30. K. Tagomori, M. Nakagawa, Saeid Jalilinasrabady, A. Kioka, R. Itoi, A. Aikawa and A. Ueda, Viscosity evaluation of ultra-fine bubble and examination of utilization in geothermal, Annual Meeting of Geothermal Research Society of Japan, 2019.11.
31. Aikawa, M. Nakagawa, Saeid Jalilinasrabady, A. Kioka, R. Itoi, Tagomori, Ueda and Kiyota, The prevention technology of silica scaling and piping corrosion by using nanobubbles in geothermal field, Annual Meeting of Geothermal Research Society of Japan, 2019.11.
32. Alvin Kiprono Bett, Dyson Moses and Saeid Jalilinasrabady, Optimization of geothermal binary unit by energy, exergy and sustainability index: Comparative study of Olkaria geothermal field in Kenya and Chiweta geothermal field in Malawi, CINEST International Symposium on Earth Science and Technology 2019, 2019.12.
33. Saeid Jalilinasrabady, Classification of Geothermal Resources, 40th New Zealand Geothermal Workshop, 2018.11, Resource classification is a key element in the characterization, assessment and development of energy resources, including geothermal energy. Geothermal resource issues such as location, quality, feasibility of development, and potential impacts are important to the geothermal stakeholders. Their understanding and use of globally recognizable and easily understood terms in describing and addressing these issues is important. These terms must cover the main aspects of geothermal parameters from fundamental geological nature of geothermal resources to the practical technological and economic aspects of resource exploitation while remaining understandable to the broad community of non-specialists. This paper will investigate worldwide status of geothermal resources classification..
34. K. Suzuki, T. Tanaka, S. Jalilinasrabady and R. Itoi, Numerical Simulation of Instability Flow in Geothermal Well With T2Well, Geothermal Research Society of Japan, 2018.11.
35. Saeid Mohammadzadeh Bina, Saeid Jalilinasrabady, Hikari Fujii, Hadi Farabi-Asl, Classification of Geothermal Resources by Applying Exergy Concept, Application to the Philipines, Geothermal Research Society of Japan, 2018.11.
36. M. Toyonaga, Saeid Jalilinasrabady, T. Tanaka and R. Itoi, Tracer Test Simulation Considering Lower Permeability Areas Near the Injection Well, Geothermal Research Society of Japan, 2018.11.
37. K. Hirase, T. Tanaka, Saeid Jalilinasrabady and R. Itoi, Automatic Parameter Estimation in Reservoir Numerical Simulation, Geothermal Research Society of Japan, 2018.11.
38. Odate N., Tanaka T., Jalilinasrabady S. and Itoi R., Evaluation of Tracer Response Curves Under Different Test Conditions at the Same Hydrogeological Structure , CINEST International Symposium on Earth Science and Technology 2017, 2017.12.
39. Ishihara S., Tanaka T., Jalilinasrabady S. and Itoi R., Evaluation of Influence of Various Boundary Conditions in Geothermal Reservoir Analysis Using TOUGH2, CINEST International Symposium on Earth Science and Technology 2017, 2017.12.
40. Nagashima T., Tanaka T., Jalilinasrabady S., Itoi R. and Takayama J., Evaluation of Fluid Flow Behavior by Two Dimensional Fault Model for the Ogiri Geothermal Area, Japan, CINEST International Symposium on Earth Science and Technology 2017, 2017.12.
41. Ishihara S., Tanaka T., Jalilinasrabady S. and Itoi R., A Basic Study of Boundary Conditions Considering Hydrothermal System on Geothermal Reservoir Analysis, Geothermal Research Society of Japan, 2017.10.
42. Odate N., Tanaka T., Jalilinasrabady S. and Itoi R., Evaluation of Effects of Convection Flow at Two-Dimensional Fault System on Tracer Response Curves, Geothermal Research Society of Japan, 2017.10.
43. Nagashima T., Tanaka T., Itoi R. and Jalilinasrabady S., Evaluation of Behavior of Reinjected Water Using Two-Dimensional Fault Models by TOUGH2, Geothermal Research Society of Japan, 2017.10.
44. Jalilinasrabady Saeid, Geothermal Energy Education, worldwide and Japan Experience, European Geothermal PhD Day, 2018.03.
45. Mohammadzadeh Bina Saeid, Jalilinasrabady Saeid, Fujii Hikai, Exergoeconomic analysis of a single and double flash geothermal power plant, Geothermal Research Society of Japan, 2017.10.
46. Eric Rop, Hikari Fujii and Saeid Jalilinasrabady, An updated numerical model of the Greater Olkaria geothermal system, Kenya, 43rd Workshop on Geothermal Reservoir Engineering, 2018.02.
47. Saeid Mohammadzadeh Bina, Saeid Jalilinasrabady, Hikari Fujii, Thermo-economic evaluation and optimization of a regenerative orc cycle utilizing geothermal energy, Geothermal Resources Council 41st Annual Meeting - Geothermal Energy: Power To Do More, GRC 2017, 2017.01, Thermo-Economic analysis was applied for the Regenerative Organic Rankine Cycle utilizing geothermal fluid as a heat source. The considered cycle works with n-Pentane (R601) as a working fluid and uses geofluid at temperature and mass flow rate of 165° C and 100 kg/s, respectively. In order to optimize the cycle in terms of thermodynamics and economics, the important operation parameters such as evaporator pressure, condenser temperature, mass flow rate of geofluid and also pinch point temperature difference were considered. Moreover, the optimum values of parameters were calculated to maximize the thermodynamic efficiencies and minimize the production cost. The optimization process was carried out by direct method in EES (Engineering Equation Solver) to determine the optimum values of mentioned parameters as restriction criteria. The results showed that the cycle gives the highest energy and exergy efficiency of 19.93% and 60.98%, respectively. While the maximum energy output of 3,860 kW was obtained from optimized cycles based on economic considerations. Also, the maximum and minimum cost rate of 28.4 $/GJ and 25.1 $/GJ was estimated for the optimized cycle based on energy efficiency and economic, respectively..
48. Jane Uwera, Ryuichi Itoi, Saeid Jalilinasrabady, Thirleikur Jóhannesson, Davíd Örn Benediktsson, Design of a cooling system using geothermal energy for storage of agricultural products with emphasis on Irish potatoes in Rwanda, Africa, 39th Geothermal Resources Council Annual Meeting - Geothermal: Always On, GRC 2015, 2015, This study focuses on the design of a cooling system for storage of agricultural products. An absorption refrigeration unit which uses a geothermal heat source to drive the absorption cycle in a chilling process, in a 25°C environment with a compartment temperature of 5°C. This system is to provide the cooling to the cold storage with a heat load of 140 kWt. The parameters mainly monitored are COP, heat transfer rates, mass flow of a geothermal fluid and the power required to run the cycle. Thermodynamic analysis of the cycle concluded that the COP of the absorption refrigeration cycle is 0.49, but can go as high as 0.6 when a heat exchanger is used..
49. Saeid Jalilinasrabady, Ryuichi Itoi, Yuji Ohya, Hybrid geothermal and wind power generation, Geothermal Resources Council Annual Meeting: A Global Resource, from Larderello to Las Vegas, GRC 2013, 2013.12, A novel idea of hybrid power generation system has been proposed that can be characterized as a simple and renewable method to achieve sustainable utilization of renewable resources. The new hybrid system utilizes a solar chimney to produce electricity with a windmill. Geothermal heat will be used as a heat source to achieve desirable air speed inside the chimney. Calculations suggest the idea may be competitive with other renewable energy sources. Further studies are necessary to achieve more realistic results to start an actual project..