Evaluation on year-round performance of double-circulation water-flow window

Chunying Li and Haida Tang

Renewable Energy, 2020, vol. 150, issue C, 176-190

Abstract: The topic of present study is a novel design of double-circulation water-flow window which combines the functions of solar thermal collector, indoor cooling/heating terminal and sun shading. Simulation program is developed and used to evaluate the year-round performance. For cooling dominant region, the window is efficient in solar thermal collection while making use of low-grade geothermal energy to provide additional heating/cooling in winter/summer. With flow rate of 0.005 kg/s, the window is capable of collecting 21.25% of total incident solar energy, which can be further enhanced to 28.76% by utilizing colored water with higher solar absorptance. Meanwhile, the window utilizes 174.27 and 64.76 kWh geothermal energy annually for indoor cooling and heating per unit area.

Keywords: High-performance building envelop; Double-circulation water-flow window; Solar energy utilization; Geothermal energy utilization; Sun shading (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:150:y:2020:i:c:p:176-190

DOI: 10.1016/j.renene.2019.12.153

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