Year 2019, Volume 22, Issue 1, Pages 9 - 17 2019-03-02

Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram

Kosuke Seki [1] , Hironori Hattori [2] , Yoshiharu Amano [3]

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Optimization for energy systems is considered at three levels: synthesis (configuration), design (component characteristics), and operation. This paper aims to evaluate the system performance and margins for improvement of two absorption heat pump systems, including an absorber heat exchanger (AHX) and a solution heat exchanger (SHX), and perform their design/operation optimization efficiently based on an energy-utilization diagram (EUD) for performance improvement. Before optimization, exergy efficiency is higher in the SHX cycle, while the margin for improvement is larger in the AHX cycle. The optimization attempts to reduce exergy destruction in the components where dominant exergy destruction caused by heat transfer occurs. In the absorber, the operating points are adjusted to make the temperature slopes at the hot and cold sides coincide. The design parameters in other components are adjusted to improve the heat transfer performances. The distribution of exergy destruction of each component leads to improve exergy efficiency. After these improvements, exergy efficiency is higher in the AHX cycle. It is concluded that we could efficiently realize the design/operation optimization of thermodynamic systems using an EUD, because the diagram presents both exergy destruction and margin for improvement at the components comprehensively, as well as the operating properties of working fluids.

Optimal design, absorption heat pump system, exergy analysis, energy-utilization diagram
  • R. K. Swartman, V. Ha, C. Swaminathan, “Comparison of ammonia–water and ammonia–sodium thiocyanate as the refrigerant–absorbent in a solar refrigeration system,” Solar Energy., 17(2), 123-127, 1975.
  • R. Best, C. L. Heard, H. Fernandez, J. Siqueiros, “Developments in geothermal energy in Mexico-Part five: the commissioning of an ammonia/water absorption cooler operating on low enthalpy geothermal energy,” Journal of Heat Recovery Systems., 6(3), 209-216, 1986.
  • M. A. Siddiqui, “Optimum generator temperatures in four absorption cycles using different sources of energy,” Energy Conversion and Management., 34(4), 251-266, 1993.
  • J. F. Seara, A. Vales, M. Vazquez, “Heat recovery system to power an onboard NH3 –H2O absorption refrigeration plant in trawler chiller fishing vessels,” Applied Thermal Engineering., 18(12), 1189-1205, 1998.
  • W. Wei, W. Baolong, S. Wenxing, L. Xianting, “An overview of ammonia-based absorption chillers and heat pumps,” Renewable and Sustainable Energy Reviews., 31, 681-707, 2014.
  • K. E. Herold, R. Radermacher, S.A. Klein, Absorption chillers and heat pumps, 2nd Ed. Boca Raton: CRC Press, 2016.
  • R. Ventas, A. Lecuona, A. Zacarías, M. Venegas, “Ammonia-lithium nitrate absorption chiller with an integrated low-pressure compressor booster cycle for low driving temperatures,” Applied Thermal Engineering., 30, 1351-1359, 2010.
  • C. Vereda, R. Ventas, A. Lecuona, M. Venegas, “Study of an ejector-absorption refrigeration cycle with an adaptable ejector nozzle for different working conditions,” Applied Thermal Engineering., 97, 305-312, 2012.
  • C. A. Frangopoulos, M. R. von Spakovsky, E. Sciubba, “A brief review of methods for design and synthesis optimization of energy systems,” Applied Thermal Engineering., 5(4), 151-160, 2002.
  • A. Toffolo, S. Rech, A. Lazzaretto, “Generation of complex energy systems by combination of elementary processes,” Journal of Energy Resources Technology., 140, 1-11, 2018.
  • Inoue, N. (2005). Studies on the Characteristics of Absorption Cycles and their Applications (Doctoral dissertation), University Waseda, Doctor of Engineering, Ph. D.
  • Y. T. Kang, W. Chen, R. N. Christensen, “Development of design model for a rectifier in GAX absorption heat pump systems,” ASHRAE Transactions., 102, 963-972, 1996.
  • M. Ishida, Creation of energy system, Tokyo: Ohmsha, 2004.
  • G. Wall, C. C. Chuang, M. Ishida, “Exergy study of the kalian cycle,” Analysis and Design of Energy Systems: Analysis of Industrial Processes, 10(3), 73-77, 1989.
  • T. Srinophakun, S. Laowithayangkul, M. Ishida, “Simulation of power cycle with energy utilization diagram,” Energy Conversion and Management., 42, 1437-1456, 2001.
  • H. Hattori, H. Matsumoto, and Y. Amano, “Design of an Ejector-Absorption Heat Pump based on Entropy Generation Minimization,” in ECOS 2017: Proceeding of the 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, San Diego, California, USA, 2017.
  • H. Obana, Handbook for designing of heat exchanger, 2nd Ed. Tokyo: Engineering book Inc., 2000.
  • H. Matsumoto, H. Hattori, and Y. Amano, “Investigation of absorption heat pump cycle driven by low temperature waste heat,” in PRTEC 2016: Proceedings of the First Pacific Rim Thermal Engineering Conference, Hawaii's Big Island, USA, 2016.
Primary Language en
Journal Section Regular Original Research Article
Authors

Author: Kosuke Seki (Primary Author)
Institution: Department of Applied Mechanics Waseda University
Country: Japan


Author: Hironori Hattori
Institution: Department of Applied Mechanics Waseda University
Country: Japan


Author: Yoshiharu Amano
Institution: Department of Applied Mechanics and Aerospace Engineering, Waseda university
Country: Japan


Bibtex @research article { ijot499627, journal = {International Journal of Thermodynamics}, issn = {1301-9724}, eissn = {2146-1511}, address = {Yaşar DEMİREL}, year = {2019}, volume = {22}, pages = {9 - 17}, doi = {10.5541/ijot.499627}, title = {Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram}, key = {cite}, author = {Seki, Kosuke and Hattori, Hironori and Amano, Yoshiharu} }
APA Seki, K , Hattori, H , Amano, Y . (2019). Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram. International Journal of Thermodynamics, 22 (1), 9-17. DOI: 10.5541/ijot.499627
MLA Seki, K , Hattori, H , Amano, Y . "Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram". International Journal of Thermodynamics 22 (2019): 9-17 <http://dergipark.org.tr/ijot/issue/43635/499627>
Chicago Seki, K , Hattori, H , Amano, Y . "Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram". International Journal of Thermodynamics 22 (2019): 9-17
RIS TY - JOUR T1 - Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram AU - Kosuke Seki , Hironori Hattori , Yoshiharu Amano Y1 - 2019 PY - 2019 N1 - doi: 10.5541/ijot.499627 DO - 10.5541/ijot.499627 T2 - International Journal of Thermodynamics JF - Journal JO - JOR SP - 9 EP - 17 VL - 22 IS - 1 SN - 1301-9724-2146-1511 M3 - doi: 10.5541/ijot.499627 UR - https://doi.org/10.5541/ijot.499627 Y2 - 2019 ER -
EndNote %0 International Journal of Thermodynamics Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram %A Kosuke Seki , Hironori Hattori , Yoshiharu Amano %T Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram %D 2019 %J International Journal of Thermodynamics %P 1301-9724-2146-1511 %V 22 %N 1 %R doi: 10.5541/ijot.499627 %U 10.5541/ijot.499627
ISNAD Seki, Kosuke , Hattori, Hironori , Amano, Yoshiharu . "Optimal Design Method for Absorption Heat Pump Cycles Based on Energy-Utilization Diagram". International Journal of Thermodynamics 22 / 1 (March 2019): 9-17. https://doi.org/10.5541/ijot.499627