关键词: 乙二醇, 热回收, 节能效果

Abstract: Objective To statistically analyze the energy-saving effect of ethylene glycol heat recovery device in the annual operation of laboratory animal facilities. Method Using the automatic control software Kingview provided by the facility, the original data such as the temperature of the fresh air, the relative humidity of the fresh air, the air temperature after heat exchange, and the relative humidity of the air after heat exchange were recorded. And through the analysis of the heat exchange data, the enthalpy value H1 ( kJ / kg) of the fresh air, the enthalpy value H2 ( kJ / kg) of the air after heat exchange, the heat recovery value at each time point and the heat recovery value at each time point are calculated. The power consumption value corresponding to the value. Result When the indoor dry bulb temperature was kept at (24. 0±2. 0) ℃ and the indoor relative humidity was kept at 40% -70%, when the outdoor daily average temperature was higher than 26. 15℃ or lower than 17. 30℃ , the energy saved by the device was higher than its own energy consumption; when the outdoor daily average temperature is 17. 30 ℃ to 26. 15 ℃ , the energy saved by the device is lower than its own energy consumption. Conclusion The application of ethylene glycol heat recovery device in the ventilation and air conditioning system of experimental animal facilities can indeed achieve energy-saving operation, but when the energy saved is lower than its own energy consumption, the operation of the device should be stopped, so as to effectively reduce the operation cost.

Key words: ethylene glycol, heat recovery, energy-saving effect