An Analysis of the Energy Efficiency and Control Strategy of ERVs with Energy Recovery in Different Typical Regions Throughout the Year

Aimin Tu, Xingshun Zhao, Shijie Liu () and Dongsheng Zhu
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Aimin Tu: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
Xingshun Zhao: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
Shijie Liu: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
Dongsheng Zhu: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Energies, 2025, vol. 18, issue 5, 1-15

Abstract: The temperature frequency method is used to analyze the energy savings of the wall-type energy recovery fresh air ventilator in three different typical regions, namely Guangzhou, with a tropical monsoon climate; the sub-temperate Wuhan; and Beijing, with a temperate monsoon climate, throughout the year. The influence of different temperature efficiencies and resistance levels of the energy recovery ventilator (ERV) on annual energy efficiency is also analyzed. The control temperature of the auxiliary heating device used in the winter is discussed, and the indoor temperature variation trend in the inter-wall-type energy recovery fresh air ventilator operating 24 h on four typical days of the year under different control modes is analyzed in the tropical monsoon climate of Guangzhou. The conclusions obtained can provide a reference for the application and selection of inter-wall-type energy recovery fresh air ventilators.

Keywords: energy recovery; fresh air ventilator; sensible heat exchange; variable air volume; frequency–temperature method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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