Thoughts on development of groundsource heat pump systems

Puts forward some problems and the authors personal opinions from such aspects as the principle and classification of groundsource heat pump systems, the difference between watersource heat pump systems and groundsource heat pump systems, the environmental risk of groundwater source heat pump systems, the mathematical model and calculating program of groundcoupled water source heat pump systems, selecting conditions of surface watersource heat pump systems and other applications of watersource heat pump units. Expects to raise discussion among professionals in this field.