制冷学报2012，Vol.33Issue(1)：22-27,6.DOI:10.3969/j.issn.0253-4339.2012.01.022
恒温恒湿空调系统的优化控制与性能模拟
Optimum Control Strategy and Performance Simulation of a Constant Temperature and Humidity Air-conditioning System
摘要
Abstract
Due to the large energy compensation caused by the fixed dew point on the cooling coil (CC) in the conventional constant temperature and humidity air-conditioning system, a new system employing a temperature and humidity independent control device (THIC device) in the CC and a method of PID split-range control, is developed in this paper. Based on the experiment verification, the operation states and the energy saving effects of the system under different heat and moisture loads have been simulated by TRNSYS 16 software. The results show that under different working conditions, the system can automatically control air temperature and humidity independently with a high precision, by adjusting the mass flow rate and the temperature of the chilled water into the CC, and the output of the heater or the humidifier. In the design of such CC, the heat transfer area should be calculated under a higher inlet temperature of the chilled water (for example, 12℃ instead of the usual 7℃). The system is energy-efficient with a rate of 30% under low temperature high humidity condition and about 50% under high temperature and low humidity condition, compared with the conventional system.关键词
热工学/恒温恒湿空调系统/热湿独立控制装置/PID分程控制/TRNSYS/节能Key words
Pyrology/ Constant temperature and humidity air-conditioning system/ Temperature and humidity independent control device/ PID split-range control/ TRNSYS/ Energy saving分类
通用工业技术引用本文复制引用
李申,沈嘉,张学军,郑幼明..恒温恒湿空调系统的优化控制与性能模拟[J].制冷学报,2012,33(1):22-27,6.基金项目
本文受2008年浙江省第二批省级文物保护专项补助经费项目(614841)资助. （614841）
