Performance analysis of interactive cascade ventilation combined with solar energy for the epidemic prevention and control

Han Li, Tong Sang, Xiangfei Kong, Wandong Zheng, Zhaoying Wang, Jinchao Li and Leilei Wang

Applied Energy, 2023, vol. 349, issue C, No S0306261923009443

Abstract: Increasing low-grade and renewable energy sources in the HVAC systems has become necessary to reduce heating energy consumption. Hence, seeking a new air conditioning system that can be combined with renewable energy is significant to maintain a healthy and comfortable indoor environment with a low cost. This paper proposes a novel air source heat pumps assisted solar hot water with interactive cascade ventilation system (shortened as SWAP-ICV). Taking the traditional air source heat pumps with mixing ventilation system (AP-MV) as a reference, the virus control performance and energy efficiency of SWAP-ICV is investigated through CFD and TRNSYS simulations. The results demonstrate that interactive cascade ventilation under full-fresh air operation mode and normal-epidemic linkage mode can make the annual infection risk reduce by 41.16% and 9.33% compared with mixing ventilation under full-fresh air operation mode. Meanwhile, the proposed system can reduce energy consumption by 59.92% and 69.8% during the normal period and epidemic period by introducing solar energy. The average system COP during the heating season indicates that SWAP-ICV can improve the system efficiency by 1.9–2.58 times than AP-MV system. The conclusions obtained from this research can provide new ideas for the design and operation of air conditioning systems in the post-epidemic era.

Keywords: Interactive cascade ventilation; Solar energy; Epidemic prevention and control; TRNSYS (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.apenergy.2023.121580

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