化工进展 ›› 2018, Vol. 37 ›› Issue (11): 4181-4189.DOI: 10.16085/j.issn.1000-6613.2018-0486

• 化工过程与装备 • 上一篇    下一篇

降低再热能耗的空调热回收系统分析

王维蔚1, 王辉涛1, 韩金蓉1, 葛众2, 黄靖伦1   

  1. 1 昆明理工大学冶金与能源学院, 云南 昆明 650000;
    2 清华大学热科学与动力工程教育部重点实验室, 北京 100084
  • 收稿日期:2018-03-12 修回日期:2018-07-03 出版日期:2018-11-05 发布日期:2018-11-05
  • 通讯作者: 王辉涛,教授,硕士生导师,研究方向为建筑节能及新能源技术。E-mail:energywht@sina.com。
  • 作者简介:王维蔚(1993-),女,硕士研究生,研究方向为空调热回收技术。
  • 基金资助:
    国家自然科学基金项目(51366005,51066002)。

Analysis of air conditioning heat recovery system for reducing reheat energy

WANG Weiwei1, WANG Huitao1, HAN Jinrong1, GE Zhong2, HUANG Jinglun1   

  1. 1 Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650000, Yunnan, China;
    2 Key Laboratory for Thermal Science Power Engineering of MOE, Tsinghua University, Beijing 100084, China
  • Received:2018-03-12 Revised:2018-07-03 Online:2018-11-05 Published:2018-11-05

摘要: 为降低一次回风全空气空调系统空气处理机组再热能耗,提出两种改进空调热回收系统,分别是混风热回收系统和新回风热回收系统。基于空调系统空气处理流程的分析,结合热力学第一定律、空气处理机热质传递方程,建立了这两种空调热回收系统能耗的计算模型。在此基础上,以昆明地区为例,考察了空调室外新风参数、空调区域热湿比、新风量及送风量等主要因素对热回收系统能耗与效率的影响,并与常用回风热回收系统和一次回风系统进行了比较。研究结果表明,在温和地区采用新提出的两种热回收系统均比一次回风系统节能60%左右,消除了一次回风全空气系统存在的“冷热抵消”现象;新提出的两种热回收全空气系统能有效减少换热器初投资,缩短热回收设备投资回收期。

关键词: 气体, 热力学过程, 回收, 传热, 一次回风空调系统, 板翅式换热器, 温和地区

Abstract: In order to reduce the reheat energy consumption in air handling unit of the primary return air system, two novel improved heat recovery systems (mixed air heat recovery system and fresh-return air heat recovery system) were proposed in this paper. Based on the analysis of the air handing process of air conditioning system, combined with the first law of thermodynamics and the heat mass transfer equation of air handling unit, the energy consumption calculation model of these two heat recovery systems was set up. Taking Kunming area as an example, the energy consumption and the energy saving rate change of the heat recovery system were studied by the effects of outdoor enthalpy, indoor heat and moisture ratio, fresh air volume and supply air volume. Compared with common return air heat recovery system and the primary return air system, the results showed that these two novel heat recovery systems in the temperate region can both reduce about 60% energy consumption than the primary return air system. These two novel heat recovery can eliminate the phenomenon of "hot and cold offset" in primary return air system. These two novel heat recovery systems can effectively reduce the initial investment of heat exchanger, and shorten the payback period of heat recovery investment.

Key words: gas, thermodynamics process, recovery, heat transfer, primary return air system, plate-fin heat exchanger, temperate region

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