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Air source heat pump water heater: Dynamic modeling, optimal energy management and mini-tubes condensers

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  • Ibrahim, Oussama
  • Fardoun, Farouk
  • Younes, Rafic
  • Louahlia-Gualous, Hasna

Abstract

This paper presents a dynamic simulation model to predict the performance of an ASHPWH (air source heat pump water heater). The developed model is used to assess its performance in the Lebanese context. It is shown that for the four Lebanese climatic zones, the expected monthly values of the average COP (coefficient of performance) varies from 2.9 to 5, leading to high efficiencies compared with conventional electric water heaters. The energy savings and GHG (greenhouse gas) emissions reduction are investigated for each zone. Furthermore, it is recommended to use the ASHPWH during the period of highest daily ambient temperatures (noon or afternoon), assuming that the electricity tariff and hot water loads are constant. In addition, an optimal management model for the ASHPWH is developed and applied for a typical winter day of Beirut. Moreover, the developed dynamic model of ASHPWH is used to compare the performance of three similar systems that differ only with the condenser geometry, where results show that using mini-condenser geometries increase the COP (coefficient of performance) and consequently, more energy is saved as well as more GHG emissions are reduced. In addition, the condenser “surface compactness” is increased giving rise to an efficient compact heat exchanger.

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  • Ibrahim, Oussama & Fardoun, Farouk & Younes, Rafic & Louahlia-Gualous, Hasna, 2014. "Air source heat pump water heater: Dynamic modeling, optimal energy management and mini-tubes condensers," Energy, Elsevier, vol. 64(C), pages 1102-1116.
    • Handle: RePEc:eee:energy:v:64:y:2014:i:c:p:1102-1116
    DOI: 10.1016/j.energy.2013.11.017
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    8. Ahn, Jae Hwan & Lee, Joo Seong & Baek, Changhyun & Kim, Yongchan, 2016. "Performance improvement of a dehumidifying heat pump using an additional waste heat source in electric vehicles with low occupancy," Energy, Elsevier, vol. 115(P1), pages 67-75.
    9. Li, Yongcai & Li, Wuyan & Liu, Zongsheng & Lu, Jun & Zeng, Liyue & Yang, Lulu & Xie, Ling, 2017. "Theoretical and numerical study on performance of the air-source heat pump system in Tibet," Renewable Energy, Elsevier, vol. 114(PB), pages 489-501.
    10. Abbasi, Bardia & Li, Simon & Mwesigye, Aggrey, 2024. "Energy, exergy, economic, and environmental (4E) analysis of SAHP water heaters in very cold climatic conditions," Renewable Energy, Elsevier, vol. 226(C).
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    12. Yingfeng Xiang & Mingwen Shi & Chuanzhen Li & Chao Zhu & Yifan Cao & Yangda Chen & Weijun Wu & Yapeng Li & Xuxin Guo & Xianpeng Sun, 2022. "Active Air-Source Heat Storage and Release System for Solar Greenhouses: Design and Performance," Energies, MDPI, vol. 16(1), pages 1-13, December.
    13. Jia, Jie & Lee, W.L. & Cheng, Yuanda & Tian, Qi, 2021. "Can reversible room air-conditioner be used for combined space and domestic hot water heating in subtropical dwellings? Techno-economic evidence from Hong Kong," Energy, Elsevier, vol. 223(C).
    14. Dengxin Ai & Ke Xu & Heng Zhang & Tianheng Chen & Guilin Wang, 2022. "Simulation Research on a Cogeneration System of Low-Concentration Photovoltaic/Thermal Coupled with Air-Source Heat Pump," Energies, MDPI, vol. 15(3), pages 1-25, February.
    15. Guo, Xiaofeng & Goumba, Alain Pascal, 2018. "Air source heat pump for domestic hot water supply: Performance comparison between individual and building scale installations," Energy, Elsevier, vol. 164(C), pages 794-802.
    16. Zou, Deqiu & Ma, Xianfeng & Liu, Xiaoshi & Zheng, Pengjun & Cai, Baiming & Huang, Jianfeng & Guo, Jiangrong & Liu, Mo, 2017. "Experimental research of an air-source heat pump water heater using water-PCM for heat storage," Applied Energy, Elsevier, vol. 206(C), pages 784-792.
    17. Roberto Barrella & Irene Priego & José Ignacio Linares & Eva Arenas & José Carlos Romero & Efraim Centeno, 2020. "Feasibility Study of a Centralised Electrically Driven Air Source Heat Pump Water Heater to Face Energy Poverty in Block Dwellings in Madrid (Spain)," Energies, MDPI, vol. 13(11), pages 1-23, May.

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