天然气发动机复合空调系统的实验研究

Experimental Research of Gas-Engine-Driven Hybrid Air-Conditioning Systems

由改装的天然气发动机直接驱动制冷机、产生冷冻水以承担显热负荷,同时回收发动机余热、再生除湿转轮来承担湿负荷,构成复合空调系统.对除湿设备的性能进行了实验测试.因空调系统的湿负荷由余热承担,显热负荷可使用较高温度的冷冻水.考虑这一情况制订了冷凝侧水温不变的原则对制冷机在不同冷冻水出水温度下的性能进行了测试.同时测量了发动机系统在不同供水温度下可回收的余热总量.

An automotive-derivative engine was converted to drive a vapor-compression chiller while waste heat from the engine was recovered to regenerate desiccant wheel for air-conditioning system. In this hybrid system, sensible load was undertaken by chilled water from chiller. With moisture load un- dertaken by desiccant dehumidification, chilled water of higher temperature can be used to improve the performance of the chiller. Some critical data influencing economic benefits, e.g. desiccant dehumidification capacities, reclaimable waste heat amount under different supply water temperature, chilling output under different chilled water temperature were experimentally measured. The measured performance data can be used to calculate economic benefits of hybrid air-conditioning systems.