Geothermal heat pump is a high efficient and energy saving air conditioning system that
provides cooling or heating by using the shallow layer geothermal source (also refers
as ground energy source, including soil, groundwater, surface water etc.). The ground
surface is an enormous solar energy collector, which collects 47% of the total energy that
arrives the earth, it's more than 500times higher than the annual energy consumption
by human being.
The geothermal source temperature is relatively stable in the whole year, it's higher
than ambient temp. in winter, and lower than ambient temp. in summer, that
characteristic makes its energy efficiency is much more than the traditional system.
With little premium energy (Electric energy) input, geothermal heat pump transfers low
temperature thermal energy into high temperature thermal. That is to say, Get the heat
from ground and increase its temperature to supply heating to indoor space in winter,
and get the heat from indoor space and release it into ground. The ground source heat
pump usually gives 5KW cooling or heating capacity by using 1KW electricity.
Comparing with boiler (electricity or fuel) system, geothermal heat pump saves 2/3
electricity, or 1/2 fuel energy; as the geothermal source temperature is relatively stable,
it's around 10 to 25oC, and it's cooling, heating coefficient up to 4.8 to 5.5, it's 40%
higher than traditional air source heat pump, and its operation cost is 50% to 60% of the
common central air conditioner.