双级压缩空气源热泵在农村煤改电项目中的应用

Application of Two-stage Compressed Air Source Heat Pump in Rural Coal to Electricity Project

通过分析北方农村地区的供暖特性确定了采用空气源热泵供暖的参数要求,在这种参数条件下比较双级压缩理论循环和单级压缩理论循环的区别,确定了前者拥有更低的蒸发温度和相对稳定的运行效率,满足北方农村地区的供暖需求;结合无煤化项目中的实例说明双级压缩空气源热泵的运行效果,并对其应用和推广中的问题进行了总结。

By analyzing the heating characteristics of the rural areas in the north,the parameter requirements of air source heat pump heating are determined.Under this parameter condition,the difference between the theoretical cycle of double stage compression and the theoretical cycle of single stage compression is compared,and the former has lower evaporation temperature and relatively stable operation efficiency,which satisfies the heat supply of rural areas in the north;The operation effect of two-stage compressed air source heat pump is illustrated with examples in the coal-free project,and the problems in its application and promotion are summarized.