Weak current College】 【geothermal development issues analysis.

1) concept: air-source heat pump and gas-fired heating technology is relatively mature, makes people choose ground source heat pump system is facing resistance.

(2) air conditioning technology and other technical support: ground source heat pump technology is ventilation and air conditioning technology and drilling technologies, integrated technology, both of which are indispensable, this requires project organizers and engineering and technical personnel to make full rational coordination, technical and economic analysis.

(3) the impact on the environment: the present groundwater recirculation technology is not perfect, to a certain extent affect the water as the low level the heat source of the further promotion of ground source heat pumps; furthermore GSHP drilling on soil heat, humidity and salinity research on the impact of migration to be further deepened, how to make adverse factors reduced to the minimum that must be considered.

(4) initial investment: not all ground-source heat pump system is economical and reasonable cost because drilling may account for the entire system at the beginning of the investment of more than 50%, some investors may be returned to the traditional form of air conditioning.

(5) installation and maintenance: ground source heat pump system installation costs are relatively high, and the electric refrigerator, gas heating system 500 ~ 800/ton, ground source heat pump of 600 ~ 1000 Yuan/ton (1ton = 1.01605t) is high, it's payback period is 5 ~ 8 years; and ground source heat pump system maintenance more difficult, which to some extent, affect its use.

(6) soil characteristics: characteristics of the soil with location changes varies, in a region results may not apply to other areas, you must make the appropriate correction even reconsider.