Mobile QR Code QR CODE : Korean Journal of Air-Conditioning and Refrigeration Engineering
Korean Journal of Air-Conditioning and Refrigeration Engineering

Korean Journal of Air-Conditioning and Refrigeration Engineering

ISO Journal TitleKorean J. Air-Cond. Refrig. Eng.
  • Open Access, Monthly
Open Access Monthly
  • ISSN : 1229-6422 (Print)
  • ISSN : 2465-7611 (Online)
Title A Study on Condensation Occurrence Ratio and Energy Recovery Ratio in Winter/ Summer of Energy Recovery Ventilator According to Latent Effectiveness
Authors Yujin Ko ; Somi Jang ; Doosam Song ; Hiki Hong
Page pp.457-464
ISSN 1229-6422
Keywords 열회수형 환기장치; 습도교환효율; 온도교환효율; 결로; 결로발생률 Evergy Recovery Ventilator(ERV); Latent effectiveness; Sensible effectiveness; Dew condensation; Condensation occurrence ratio
Abstract To resolve indoor air pollution such as CO2 concentration problems that threaten the health of the occupants as well as to minimize the ventilation load that occupies a large portion of the cooling and heating loads, recently, the air-conditioning industry of cooling buildings including general houses has attracted much interest in Energy Recovery Ventilators (ERV). The commercially available ERV shows relatively good performance in general outdoor conditions, but condensation occurs inside the device from a humid climate in summer or a low temperature in winter, causing problems such as mold and rust. In this paper, the actual condensation occurrence ratio of South Korea was derived according to the latent effectiveness, and the outdoor conditions in which such condensation occurred were analyzed. As a result of summer simulation, the condensation occurrence ratio of Seoul/Busan was approximately 4.9%/12.9% at 0% latent effectiveness, and 0.7%/3.0% at 10%. In Seoul and Busan, condensation rarely occurs when the latent effectiveness is more than 20%. As a result of the winter simulation, the condensation occurrence rate of Seoul/Busan is approximately 84.9%/51.6% at the latent effectiveness of 0%. In the case of Seoul, as the latent effectiveness increases, the condensation occurrence rate slowly decreases, and then rapidly decreases from 30%. Condensation rarely occurs at 80% or more. In the case of Busan, it decreases linearly, and condensation rarely occurs at 70% or more.