建立了该供热系统的热力学模型,推导出了供热负荷与设计参数、运行参数、环境温度的关系式。通过理论计算,分析了添加热泵与未加热泵两种工况下,散热器表面积、循环水流量、环境温度等对井下换热器性能及供热系统供热量的影响。 The thermodynamic model of the heating system is established, and the relationship between heating load and design parameters, operating parameters and ambient temperature is deduced. Through the theoretical calculation, the influence of heat exchanger surface area, circulating water flow rate and ambient temperature on the performance of downhole heat exchanger and the heat supply of heating system under the two conditions of heat pump and unheated pump are analyzed.