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Experimental studies on combined cooling and power system driven by low-grade heat sources

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  • Kumar, G. Praveen
  • Saravanan, R.
  • Coronas, Alberto

Abstract

An experimental investigation was undertaken to study the actual useful output and performance of a combined power and cooling system that uses low-grade energy. The cycle used was a combination of NH3-H2O absorption refrigeration cycle and Kalina extraction turbine cycle. The expected performance characteristics of the dual output system were first evaluated using an energetic and exergetic approach based on the quality of useful outputs; in the experimental confirmation. It was evaluated in Cooling Alone mode (CA mode) and Combined Cooling-Power mode (CCP mode), for the same operating conditions. The weak solution flow rate and generator temperature were maintained constant at 0.237 kg/s and 133 °C respectively throughout the experimental run. The maximum cooling load of 34.26 kW was achieved with a COP's of 0.57 in CA mode. In CCP mode, the system was operated at a split ratio of 0.5 with the useful cooling load of 15.26 kW and estimated expander load of 2.21 kW respectively, with power to cooling ratio of 0.14. The corresponding effective first-law and exergetic efficiencies were 13% and 48%. This study provides a feasible and flexible way to meet the desired combination of power/cooling ratio to generate varying demand profiles using available low-grade heat sources.

Suggested Citation

  • Kumar, G. Praveen & Saravanan, R. & Coronas, Alberto, 2017. "Experimental studies on combined cooling and power system driven by low-grade heat sources," Energy, Elsevier, vol. 128(C), pages 801-812.
    • Handle: RePEc:eee:energy:v:128:y:2017:i:c:p:801-812
    DOI: 10.1016/j.energy.2017.04.066
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    References listed on IDEAS

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    Cited by:

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    2. Kazemiani-Najafabadi, Parisa & Amiri Rad, Ehsan & Simonson, Carey James, 2022. "Designing and thermodynamic optimization of a novel combined absorption cooling and power cycle based on a water-ammonia mixture," Energy, Elsevier, vol. 253(C).
    3. Mahmoudi, S.M.S. & Akbari Kordlar, M., 2018. "A new flexible geothermal based cogeneration system producing power and refrigeration," Renewable Energy, Elsevier, vol. 123(C), pages 499-512.
    4. Parikhani, Towhid & Ghaebi, Hadi & Rostamzadeh, Hadi, 2018. "A novel geothermal combined cooling and power cycle based on the absorption power cycle: Energy, exergy and exergoeconomic analysis," Energy, Elsevier, vol. 153(C), pages 265-277.
    5. Haojin Wang & Jianyong Wang & Zhuan Liu & Haifeng Chen & Xiaoqin Liu, 2022. "Thermodynamic Analysis of a New Combined Cooling and Power System Coupled by the Kalina Cycle and Ammonia–Water Absorption Refrigeration Cycle," Sustainability, MDPI, vol. 14(20), pages 1-18, October.
    6. Praveen Kumar, G. & Ayou, Dereje S. & Narendran, C. & Saravanan, R. & Maiya, M.P. & Coronas, Alberto, 2023. "Renewable heat powered polygeneration system based on an advanced absorption cycle for rural communities," Energy, Elsevier, vol. 262(PA).
    7. Maheshwari, Mayank & Singh, Onkar, 2020. "Thermo-economic analysis of combined cycle configurations with intercooling and reheating," Energy, Elsevier, vol. 205(C).
    8. Akbari Kordlar, M. & Mahmoudi, S.M.S. & Talati, F. & Yari, M. & Mosaffa, A.H., 2019. "A new flexible geothermal based cogeneration system producing power and refrigeration, part two: The influence of ambient temperature," Renewable Energy, Elsevier, vol. 134(C), pages 875-887.
    9. Braccio, Simone & Di Nardo, Antonio & Calchetti, Giorgio & Phan, Hai Trieu & Le Pierrès, Nolwenn & Tauveron, Nicolas, 2023. "Performance evaluation of a micro partial admission impulse axial turbine in a combined ammonia-water cooling and electricity absorption cycle," Energy, Elsevier, vol. 278(PB).
    10. Vaclav Novotny & David J. Szucs & Jan Špale & Hung-Yin Tsai & Michal Kolovratnik, 2021. "Absorption Power and Cooling Combined Cycle with an Aqueous Salt Solution as a Working Fluid and a Technically Feasible Configuration," Energies, MDPI, vol. 14(12), pages 1-26, June.
    11. Zhang, Zhixiang & Yuan, Han & Mei, Ning, 2023. "Theoretical analysis on extraction-ejection combined power and refrigeration cycle for ocean thermal energy conversion," Energy, Elsevier, vol. 273(C).

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