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Study and Optimization of Design Parameters in Water Loop Heat Pump Systems for Office Buildings in the Iberian Peninsula

Author

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  • Francisco Javier Fernández

    (Polytechnic School of Engineering, University of Oviedo, C/Wifredo Ricart s/n, 33204 Gijón, Spain)

  • María Belén Folgueras

    (Polytechnic School of Engineering, University of Oviedo, C/Wifredo Ricart s/n, 33204 Gijón, Spain)

  • Inés Suárez

    (Polytechnic School of Engineering, University of Oviedo, C/Wifredo Ricart s/n, 33204 Gijón, Spain)

Abstract

Water loop heat pump (WLHP) air conditioning systems use heat pumps connected to a common water circuit to fulfill the energy demands of different thermal zones in a building. In this study, the energy consumption was analyzed for the air conditioning of an office building in the typical climate of four important cities of the Iberian Peninsula. The energy consumption of one water loop heat pump system was compared with a conventional water system. Two design parameters, the range in the control temperatures and the water loop thermal storage size, were tested. Energy redistribution is an important advantage of the WLHP system, but significant savings came from high efficiency parameters in the heat pumps and minor air flow rates in the cooling tower. The low thermal level in the water loop makes this technology appropriate to combine with renewable sources. Using natural gas as the thermal energy source, a mean decrease in CO 2 emissions of 8.1% was reached. Simulations showed that the installation of big thermal storage tanks generated small energy savings. Besides, the total annual consumption in buildings with high internal loads can be reduced by keeping the water loop as cool as possible.

Suggested Citation

  • Francisco Javier Fernández & María Belén Folgueras & Inés Suárez, 2017. "Study and Optimization of Design Parameters in Water Loop Heat Pump Systems for Office Buildings in the Iberian Peninsula," Energies, MDPI, vol. 10(12), pages 1-12, November.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:1958-:d:120293
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    References listed on IDEAS

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    1. Chen, Chao & Sun, Feng-ling & Feng, Lei & Liu, Ming, 2005. "Underground water-source loop heat-pump air-conditioning system applied in a residential building in Beijing," Applied Energy, Elsevier, vol. 82(4), pages 331-344, December.
    2. Buonomano, Annamaria & Calise, Francesco & Palombo, Adolfo, 2012. "Buildings dynamic simulation: Water loop heat pump systems analysis for European climates," Applied Energy, Elsevier, vol. 91(1), pages 222-234.
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    Cited by:

    1. Tan, Luzhi & Dong, Xiaoming & Gong, Zhiqiang & Wang, Mingtao, 2018. "Analysis on energy efficiency and CO2 emission reduction of an SOFC-based energy system served public buildings with large interior zones," Energy, Elsevier, vol. 165(PB), pages 1106-1118.
    2. Ida Franzén & Linnéa Nedar & Maria Andersson, 2019. "Environmental Comparison of Energy Solutions for Heating and Cooling," Sustainability, MDPI, vol. 11(24), pages 1-17, December.

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