Experimental and numerical analysis on total heat recovery performance of an enthalpy wheel under high temperature high humidity working conditions

被引：16

作者：

Fu, Huangxi ^{[1
]}

Liu, Xiaohua ^{[1
]}

Xie, Ying ^{[1
]}

Jiang, Yi ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2019年 / 146卷

基金：

中国国家自然科学基金;

关键词：

Enthalpy wheel; Total heat recovery; Large temperature difference; Large humidity difference; AIR DEHUMIDIFICATION; MASS-TRANSFER; FLUE-GAS; DESICCANT WHEELS; BOILER; PUMP; ADSORBENT; SYSTEM; BEDS;

D O I：

10.1016/j.applthermaleng.2018.10.026

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Enthalpy wheels (EWs) have been extensively used for total heat recovery from ventilation air. Despite there being many studies reporting on their performances under common working conditions with a small temperature and humidity ratio difference (Delta T < 20 degrees C, Delta omega < 15 g kg(-1)), there are few studies reporting on their performances under high temperature high humidity (HTHH) working conditions. This study aims to investigate the total heat recovery performance of an EW under HTHH working conditions. A mathematical model is established and validated to predict the performance. The effects of rotation speed, air inlet velocity, air inlet temperature, and air inlet humidity ratio on the total heat recovery performance are numerically investigated, and performance comparisons between HTHH working conditions and other common working conditions are also carried out. The comparison results show that the EW performs better for total heat recovery under HTHH working conditions, with epsilon(total) improving by 6% compared to common working conditions. The reasons behind the discrepancies are revealed by analyzing the distributions of temperature and humidity in the EW. This study is expected to be beneficial to design EWs to recover total heat from HTHH waste gas.

引用

页码：482 / 494

页数：13

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