An analytical solution relating X and t can be found for the case of constant or meanheatcapacity.
对常数热容或平均热容，还可求出分析解。
2
When we measure the air heatcapacity of heat pump by enthalpy potential method, the flow rate measuring method was used to measure flow rate and sectional mean temperature of air.
利用空气焓差法进行热泵空气侧换热量测量时，通常采用测流量法测量风的流量和截面平均温度。
3
When we measure the heatcapacity of heat pump by enthalpy measuring method, we use flow rate measuring method to measure flow rate and sectional mean temperature of air.