热泵再生型转轮除湿空调系统研究

Heat pump regenerative rotor dehumidification airconditioning system research

针对常规转轮除湿空调系统再生能耗高、再生排风热损失大的问题,提出了热泵再生型转轮除湿空调系统,该系统能同时回收转轮除湿侧的吸附热及再生侧的排风热。研究热泵再生型转轮除湿空调系统的热力过程,进而建立该系统的[火用]能耗模型。分析室外气象参数对系统性能的影响,随着室外空气温度的升高,系统的[火用]损耗减少,[火用]效率提高;随着室外空气含湿量的提高,系统的[火用]损耗先减少后增加;当室外干球温度低于34.0℃,含湿量低于20.3 g/kg(相对湿度为59.8%)时,系统的送风参数能满足室内舒适性要求。结果表明热泵再生型转轮除湿空调系统较适用高温中湿的室外环境。

A heat pump regenerative desiccant wheel air conditioning system was proposed for solving the problems of high regenerative energy consumption and large loss of regenerative exhaust heat in the conventional desiccant wheel air conditioning system.The system could simultaneously recover the heat of adsorption on the dehumidification side and the exhaust heat on the regeneration side of desiccant wheel.The thermal process of the heat pump regenerative desiccant wheel air conditioning system was studied and the exergy consumption model of the system was established.The influence of outdoor meteorological parameters on system performance was analyzed.The results show that as the outdoor air temperature increases,the system’s exergy loss decreases and the exergy efficiency increases.As the outdoor air humidity ratio increases,the system’s exergy loss decreases first and then increases.When the outdoor dry bulb temperature is lower than 34.0°C and the humidity ratio is lower than 20.3 g/kg while the relative humidity is 59.8%,the air supply parameters of the system can meet the indoor comfort requirements.The results proves that the heat pump regenerative desiccant wheel air conditioning system is more suitable for the outdoor environment of high temperature and intermediate humidity ratio.