在焓差实验室的室内侧增加一个热回收装置,利用高温高压制冷剂气体对空气经行加热,减少电加热及电加湿；室外侧采用热气旁通,使蒸发温度控制在一个合适的范围内,减少加湿量,达到节能目的.%A heat recovery exchanger is equiped in indoor side of the laboratory to heat the air by the refrigerarant gas with high temperature and pressure so that the use of electric heating and electric humidificating was reduced. The outdoor side refrigeration units.used hoi -gas bypass energy regulation to make the evaporation temperature be controled in an appropriate range .
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