IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v145y2018icp17-24.html
   My bibliography  Save this article

Control strategy and experimental analysis of a direct-expansion solar-assisted heat pump water heater with R134a

Author

Listed:
  • Kong, Xiangqiang
  • Jiang, Kailin
  • Dong, Shandong
  • Li, Ying
  • Li, Jianbo

Abstract

A direct-expansion solar-assisted heat pump (DX-SAHP) system was designed and built in Qingdao China, which was used to supply domestic hot water. The system mainly consisted of a bare solar collector/evaporator with area of 1.56 m2, a rotary-type hermetic compressor with rated power of 400 W, an electronic expansion valve (EEV) and a micro-channel aluminum flat tube condenser with single surface area of 0.435 m2 surrounding a 0.195 m3 water tank. The system was charged with 800 g of R134a. Based on the degree of superheat at the outlet of the solar collector/evaporator, a control strategy for the system was developed and tested over a wide range of operating conditions, which proved that it could regulate the degree of superheat in range of 5–10 °C effectively. Then the thermal performance of the system was experimentally studied under various operating conditions. Experimental results showed that for most of the time in 2016, when the 0.195 m3 water was heated to the temperature between 55 °C and 60 °C, the coefficient of performance (COP) of the prototype device was higher than 3.0. As the solar radiation intensity or ambient temperature increased, the COP of the system increased, and the heating time decreased.

Suggested Citation

  • Kong, Xiangqiang & Jiang, Kailin & Dong, Shandong & Li, Ying & Li, Jianbo, 2018. "Control strategy and experimental analysis of a direct-expansion solar-assisted heat pump water heater with R134a," Energy, Elsevier, vol. 145(C), pages 17-24.
    • Handle: RePEc:eee:energy:v:145:y:2018:i:c:p:17-24
    DOI: 10.1016/j.energy.2017.12.114
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544217321576
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2017.12.114?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Wang, Zhangyuan & Guo, Peng & Zhang, Haijing & Yang, Wansheng & Mei, Sheng, 2017. "Comprehensive review on the development of SAHP for domestic hot water," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 871-881.
    2. Gunasekar, N. & Mohanraj, M. & Velmurugan, V., 2015. "Artificial neural network modeling of a photovoltaic-thermal evaporator of solar assisted heat pumps," Energy, Elsevier, vol. 93(P1), pages 908-922.
    3. Lee, Ho-Saeng & Kim, Hyeon-Ju & Kang, Dong-gyu & Jung, Dongsoo, 2012. "Thermodynamic performance of R32/R152a mixture for water source heat pumps," Energy, Elsevier, vol. 40(1), pages 100-106.
    4. Harby, K., 2017. "Hydrocarbons and their mixtures as alternatives to environmental unfriendly halogenated refrigerants: An updated overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 1247-1264.
    5. Zhou, Jinzhi & Zhao, Xudong & Ma, Xiaoli & Qiu, Zhongzhu & Ji, Jie & Du, Zhenyu & Yu, Min, 2016. "Experimental investigation of a solar driven direct-expansion heat pump system employing the novel PV/micro-channels-evaporator modules," Applied Energy, Elsevier, vol. 178(C), pages 484-495.
    6. Arabkoohsar, A. & Andresen, G.B., 2018. "A smart combination of a solar assisted absorption chiller and a power productive gas expansion unit for cogeneration of power and cooling," Renewable Energy, Elsevier, vol. 115(C), pages 489-500.
    7. Kong, X.Q. & Zhang, D. & Li, Y. & Yang, Q.M., 2011. "Thermal performance analysis of a direct-expansion solar-assisted heat pump water heater," Energy, Elsevier, vol. 36(12), pages 6830-6838.
    8. Moreno-Rodriguez, A. & Garcia-Hernando, N. & González-Gil, A. & Izquierdo, M., 2013. "Experimental validation of a theoretical model for a direct-expansion solar-assisted heat pump applied to heating," Energy, Elsevier, vol. 60(C), pages 242-253.
    9. Chow, T.T. & Pei, G. & Fong, K.F. & Lin, Z. & Chan, A.L.S. & He, M., 2010. "Modeling and application of direct-expansion solar-assisted heat pump for water heating in subtropical Hong Kong," Applied Energy, Elsevier, vol. 87(2), pages 643-649, February.
    10. Li, Y.W. & Wang, R.Z. & Wu, J.Y. & Xu, Y.X., 2007. "Experimental performance analysis and optimization of a direct expansion solar-assisted heat pump water heater," Energy, Elsevier, vol. 32(8), pages 1361-1374.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Cai, Jingyong & Li, Zhouhang & Ji, Jie & Zhou, Fan, 2019. "Performance analysis of a novel air source hybrid solar assisted heat pump," Renewable Energy, Elsevier, vol. 139(C), pages 1133-1145.
    2. Song, Zhiying & Ji, Jie & Li, Zhaomeng, 2022. "Performance of a heat pump system in combination with thermoelectric generators," Energy, Elsevier, vol. 239(PA).
    3. Shao, Nina & Ma, Liangdong & Zhang, Jili, 2020. "Experimental investigation on the performance of direct-expansion roof-PV/T heat pump system," Energy, Elsevier, vol. 195(C).
    4. Hao, Wengang & Zhang, Han & Liu, Shuonan & Mi, Baoqi & Lai, Yanhua, 2021. "Mathematical modeling and performance analysis of direct expansion heat pump assisted solar drying system," Renewable Energy, Elsevier, vol. 165(P1), pages 77-87.
    5. Zhang, Feng & Cai, Jingyong & Ji, Jie & Han, Kedong & Ke, Wei, 2020. "Experimental investigation on the heating and cooling performance of a solar air composite heat source heat pump," Renewable Energy, Elsevier, vol. 161(C), pages 221-229.
    6. Del Amo, Alejandro & Martínez-Gracia, Amaya & Bayod-Rújula, Angel A. & Cañada, Marta, 2019. "Performance analysis and experimental validation of a solar-assisted heat pump fed by photovoltaic-thermal collectors," Energy, Elsevier, vol. 169(C), pages 1214-1223.
    7. Stephen Tangwe & Patrick Mukumba & Golden Makaka, 2023. "An Installed Hybrid Direct Expansion Solar Assisted Heat Pump Water Heater to Monitor and Modeled the Energy Factor of a University Students’ Accommodation," Energies, MDPI, vol. 16(3), pages 1-30, January.
    8. Liang, Ruobing & Zhou, Chao & Zhang, Jili & Chen, Jianquan & Riaz, Ahmad, 2020. "Characteristics analysis of the photovoltaic thermal heat pump system on refrigeration mode: An experimental investigation," Renewable Energy, Elsevier, vol. 146(C), pages 2450-2461.
    9. Maltais, Louis-Gabriel & Gosselin, Louis, 2021. "Predictability analysis of domestic hot water consumption with neural networks: From single units to large residential buildings," Energy, Elsevier, vol. 229(C).
    10. Chen, Yuzhu & Hua, Huilian & Wang, Jun & Lund, Peter D., 2021. "Thermodynamic performance analysis and modified thermo-ecological cost optimization of a hybrid district heating system considering energy levels," Energy, Elsevier, vol. 224(C).
    11. Fan, Yi & Zhao, Xudong & Han, Zhonghe & Li, Jing & Badiei, Ali & Akhlaghi, Yousef Golizadeh & Liu, Zhijian, 2021. "Scientific and technological progress and future perspectives of the solar assisted heat pump (SAHP) system," Energy, Elsevier, vol. 229(C).
    12. Han, Youhua & Ma, Liangdong & Zhang, Jili & Mi, Peiyuan & Guo, Xiaochao, 2023. "Research on the adaptive proportional-integral control method of a direct-expansion photovoltaic-thermal heat pump system," Energy, Elsevier, vol. 281(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Wang, Zhangyuan & Guo, Peng & Zhang, Haijing & Yang, Wansheng & Mei, Sheng, 2017. "Comprehensive review on the development of SAHP for domestic hot water," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 871-881.
    2. Shi, Guo-Hua & Aye, Lu & Li, Dan & Du, Xian-Jun, 2019. "Recent advances in direct expansion solar assisted heat pump systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 109(C), pages 349-366.
    3. Mohanraj, M. & Belyayev, Ye. & Jayaraj, S. & Kaltayev, A., 2018. "Research and developments on solar assisted compression heat pump systems – A comprehensive review (Part-B: Applications)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 83(C), pages 124-155.
    4. Cai, Jingyong & Li, Zhouhang & Ji, Jie & Zhou, Fan, 2019. "Performance analysis of a novel air source hybrid solar assisted heat pump," Renewable Energy, Elsevier, vol. 139(C), pages 1133-1145.
    5. Badiei, A. & Golizadeh Akhlaghi, Y. & Zhao, X. & Shittu, S. & Xiao, X. & Li, J. & Fan, Y. & Li, G., 2020. "A chronological review of advances in solar assisted heat pump technology in 21st century," Renewable and Sustainable Energy Reviews, Elsevier, vol. 132(C).
    6. Mohamed, Elamin & Riffat, Saffa & Omer, Siddig & Zeinelabdein, Rami, 2019. "A comprehensive investigation of using mutual air and water heating in multi-functional DX-SAMHP for moderate cold climate," Renewable Energy, Elsevier, vol. 130(C), pages 582-600.
    7. Song, Zhiying & Ji, Jie & Zhang, Yuzhe & Li, Yunhai & Li, Jing & Zhao, Xudong, 2023. "Annual analysis of the photovoltaic direct-expansion heat pump assisted by double condensing equipment for secondary power generation," Renewable Energy, Elsevier, vol. 209(C), pages 169-183.
    8. Cai, Jingyong & Zhang, Feng & Ji, Jie, 2020. "Comparative analysis of solar-air dual source heat pump system with different heat source configurations," Renewable Energy, Elsevier, vol. 150(C), pages 191-203.
    9. Stephen Tangwe & Patrick Mukumba & Golden Makaka, 2023. "An Installed Hybrid Direct Expansion Solar Assisted Heat Pump Water Heater to Monitor and Modeled the Energy Factor of a University Students’ Accommodation," Energies, MDPI, vol. 16(3), pages 1-30, January.
    10. Omojaro, Peter & Breitkopf, Cornelia, 2013. "Direct expansion solar assisted heat pumps: A review of applications and recent research," Renewable and Sustainable Energy Reviews, Elsevier, vol. 22(C), pages 33-45.
    11. Del Amo, Alejandro & Martínez-Gracia, Amaya & Bayod-Rújula, Angel A. & Cañada, Marta, 2019. "Performance analysis and experimental validation of a solar-assisted heat pump fed by photovoltaic-thermal collectors," Energy, Elsevier, vol. 169(C), pages 1214-1223.
    12. Buker, Mahmut Sami & Riffat, Saffa B., 2016. "Solar assisted heat pump systems for low temperature water heating applications: A systematic review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 55(C), pages 399-413.
    13. Song, Zhiying & Ji, Jie & Cai, Jingyong & Zhao, Bin & Li, Zhaomeng, 2021. "Investigation on a direct-expansion solar-assisted heat pump with a novel hybrid compound parabolic concentrator/photovoltaic/fin evaporator," Applied Energy, Elsevier, vol. 299(C).
    14. Song, Zhiying & Ji, Jie & Zhang, Yuzhe & Cai, Jingyong & Li, Zhaomeng & Li, Yunhai, 2023. "Mathematical and experimental investigation about the dual-source heat pump integrating low concentrated photovoltaic and finned-tube exchanger," Energy, Elsevier, vol. 263(PE).
    15. Jorge E. De León-Ruiz & Ignacio Carvajal-Mariscal, 2018. "Mathematical Thermal Modelling of a Direct-Expansion Solar-Assisted Heat Pump Using Multi-Objective Optimization Based on the Energy Demand," Energies, MDPI, vol. 11(7), pages 1-27, July.
    16. Mohanraj, M. & Belyayev, Ye. & Jayaraj, S. & Kaltayev, A., 2018. "Research and developments on solar assisted compression heat pump systems – A comprehensive review (Part A: Modeling and modifications)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 83(C), pages 90-123.
    17. Guo, J.J. & Wu, J.Y. & Wang, R.Z. & Li, S., 2011. "Experimental research and operation optimization of an air-source heat pump water heater," Applied Energy, Elsevier, vol. 88(11), pages 4128-4138.
    18. Li, Fenglei & Chang, Zhao & Li, Xinchang & Tian, Qi, 2018. "Energy and exergy analyses of a solar-driven ejector-cascade heat pump cycle," Energy, Elsevier, vol. 165(PB), pages 419-431.
    19. Herrando, M. & Coca-Ortegón, A. & Guedea, I. & Fueyo, N., 2023. "Experimental validation of a solar system based on hybrid photovoltaic-thermal collectors and a reversible heat pump for the energy provision in non-residential buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 178(C).
    20. Cui, Yuanlong & Zhu, Jie & Zoras, Stamatis & Zhang, Jizhe, 2021. "Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:145:y:2018:i:c:p:17-24. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.