双蒸发温度温湿度独立控制空调系统热力学分析
Thermodynamic Analysis of Dual Evaporation Temperature and Humidity Independent Control Air Conditioning System
胡文举 1李赞欣1
作者信息
- 1. 北京建筑大学环境与能源工程学院,北京 102616
- 折叠
摘要
提出一种基于冷回收的双蒸发温度温湿度独立控制空调系统(简称THIC空调系统),建立传统空调系统、THIC空调系统热力学模型.以北京市某办公室作为应用对象,分析计算传统空调系统、THIC空调系统热力学特性.THIC空调系统中,高温制冷循环承担总冷负荷的71.4％,低温制冷循环承担总冷负荷的28.6％.与传统空调系统相比,THIC空调系统的总功耗降低8.8％,但由于回风量增加,THIC空调系统的风机功耗升高2.94％.与传统空调系统相比,THIC空调系统的制冷性能系数提高9.83％.冷回收器回收冷量为0.512 kW,冷回收器节能率为2.77％.与传统空调系统相比,THIC空调系统的㶲效率提高10.4％,总㶲损失减少105.84 W,降幅为 10.95％.
Abstract
An air conditioning system with inde-pendent control of dual evaporation temperature and humidity based on cold recovery(referred to as THIC air conditioning system)is proposed,and the thermo-dynamic models of traditional air conditioning system and THIC air conditioning system are established.Tak-ing an office in Beijing as the application object,the thermodynamic characteristics of traditional air condi-tioning system and THIC air conditioning system are analyzed and calculated.In the THIC air conditioning system,the high-temperature refrigeration cycle bears 71.4％of the total cooling load,and the low-tempera-ture refrigeration cycle bears 28.6％of the total cool-ing load.Compared with the traditional air conditioning system,the total power consumption of the THIC air conditioning system is reduced by 8.8％,but the fan power consumption of the THIC air conditioning system is increased by 2.94％due to the increase of return air volume.Compared with the traditional air conditioning system,the cooling performance coefficient of the THIC air conditioning system is increased by 9.83％.The cold recovery capacity of the cold recycler is 0.512 kW,and the energy savings rate of the cold recycler is 2.77％.Compared with the traditional air conditioning system,the exergy efficiency of the THIC air condition-ing system is increased by 10.4％,and the total exergy loss is reduced by 105.84 W with a decrease of 10.95％.
关键词
温湿度独立控制/双蒸发温度/冷回收/热力学特性Key words
independent control of temperature and humidity/dual evaporation temperature/cold recy-cling/thermodynamic characteristics引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据