Thermal analysis of a new heating system with down-hole heat exchanger and heat pump

Establishes a thermodynamics model of the heating system, and deduces the relationship of heating load with design parameters, operation parameters and environment temperature. Based on theoretic calculation, analyses the influences of the heat radiator surface area, circulating water flow rate and environment temperature on the performance of the down-hole heat exchanger and the heat output of the heating system under the conditions with or without heat pump.