A.Application of the conditions of groundwater source heat pump system
1. Rich water near the building, facilitate the implementatiom of the supply and return water
2. Local policy allows using groundwater
3.Groundwater temperature appropriate, the water is suitable, water supply stability, water return smoothly

B.Application of the conditions of the surface water source heat pump system
1. Rich water near the building ( such as river , lake water , seawater, reservoir water, industrialwastewater and so on)
2. Adequate water , moderate temperature, the water can meet the using requirements after simple handling.
C.pplication of the conditions of ground source heat heat pump system
1. Lake of water near the building or various factors limit use of water resource
2. There is enough space around the building for the ground-couple system.