Design and Experimental Research on Dual Cold Sources Dehumidification System with Temperature Adjustment and Heat Recovery

Zhang Longai; Wang Chuanhua; Qu Qinggao; Liao Yongliang

doi:10.3969/j.issn.0253-4339.2021.04.083

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Design and Experimental Research on Dual Cold Sources Dehumidification System with Temperature Adjustment and Heat Recovery

更新时间：2024-07-18

- Design and Experimental Research on Dual Cold Sources Dehumidification System with Temperature Adjustment and Heat Recovery
- Journal of Refrigeration Vol. 42, Issue 4, Pages: 83-90+115(2021)
- 作者机构：
  
  珠海格力电器股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2021.04.083
  CLC：
- Published：2021
- 稿件说明：
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Zhang Longai, Wang Chuanhua, Qu Qinggao, et al. Design and Experimental Research on Dual Cold Sources Dehumidification System with Temperature Adjustment and Heat Recovery[J]. Journal of Refrigeration, 2021, 42(4): 83-90+115.
DOI：

Zhang Longai, Wang Chuanhua, Qu Qinggao, et al. Design and Experimental Research on Dual Cold Sources Dehumidification System with Temperature Adjustment and Heat Recovery[J]. Journal of Refrigeration, 2021, 42(4): 83-90+115. DOI： 10.3969/j.issn.0253-4339.2021.04.083.

摘要

针对温湿度独立控制空调系统中，新风采用冷却除湿方式存在能耗较高、送风温度低、相对湿度大容易产生湿冷感的问题，本文提出一种双冷源热回收调温型冷却除湿系统方案。通过对其进行理论分析及实验验证，确定不同因素，如压缩机频率、预冷器水流量、新风量，对送风状态点的影响情况，研究其变化规律，形成送风状态点控制策略，确认了系统调节能力可满足送风舒适的要求，在标准工况下，送风温度最高可调至25.0 ℃。与普通除湿系统相比，双冷源热回收调温型冷却除湿系统能效提升幅度最高可达93.6%。

Abstract

In a traditional temperature and humidity independent control system

low temperatures and a high relative humidity of fresh air happens when condensation dehumidification is used for fresh air treatment. In this study

a temperature-adjustable energy-saving dehumidification system with double cold sources was proposed to solve these problems. Theoretical analysis and experimental verification were conducted to study the factors affecting the supply air status

including compressor frequency

cooling coil water flow

and fresh air volume. Control devices were then developed for the supply air status in accordance with its variation. The results show that the system has a satisfactory adjustability of the comfortable supply air. Under standard conditions

the supply air temperature can be as high as 25.0 ℃. Compared with conventional dehumidification

the efficiency improvement of this new system is up to 93.6%.

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