空调降温兔舍热回收通风设备的节能效果（英文）

Energy-saving performance of modified heat recovery ventilator in air conditioner cooling rabbit house

为缓解中国南方湿热气候下夏季兔舍中降温与通风之间矛盾,一种改进的热回收通风设备应用于空调降温繁殖兔舍中,拟解决空调制冷运行能耗成本高的问题。在制冷空调运行阶段,室外气温在31～39℃时,兔舍内温度维持在22～27℃。选取两间均使用空调降温的兔舍分别作为处理舍和对照舍,处理舍中使用热回收通风设备降低通风带来的能量损失,对照舍中没有通风。试验结果表明,相比于对照舍,处理舍中因为通风的原因,温度提高了1.4℃,但同时舍内的NH3和CO2浓度分别降低10%和21%。在整个炎热季节中,热回收的应用能够降低10.2%的空调能耗,热回收效率达到63.3%。试验中,当室内外温度差高于5.1℃时运行热回收通风才是经济的,在中国东南地区典型夏季气候下,一年有501 h满足节能运行的要求,每平米兔舍总计能够节约电量为4.6 kWh。此外,热回收设备的压降和管道系统的通风组织,是提高热回收通风效果的潜在重要因素。

The objective of this study is to analyse performance of a modified heat recovery ventilator in air conditioner cooling breeding rabbit house in hot season.The heat recovery ventilator was employ to reduce the energy consumption of cooling rabbit house,alleviate the contradiction between air conditioner cooling and ventilation.During the operation of the air-conditioner,air temperature in the rabbit house maintained 22-27℃when the ambient air temperature varied 31-39℃.The heat recovery ventilator was used to reduce energy consumption of the air-conditioner.The experiment was carried out in two rabbit houses with heat recovery ventilator(treatment house)and without heat recovery ventilator(control house).Compared with the control house,the air temperature in the treatment house was higher by 1.4℃,while the NH3 and CO2 concentration in the treatment house decreased by 10%and 21%,respectively.The application of the heat recovery ventilator reduced 10.2%energy consumption of the air-conditioner during the hot season,and the sensible heat efficiency of the heat recovery ventilator was 63.3%.The heat recovery ventilator was economic to operate when the temperature difference between indoor and outdoor was more than 5.1℃.There is 501 h available time every year for the operation of the hot season in southeast China,and the calculated annual electricity saving was 4.6 kWh for every square meter of rabbit house.Pressure drop of the heat exchanger and the duct ventilation organization are potential factors for improving performance of the system.