Heat contained in earth, is called geothermal heat is usually used indirectly. Heat pumps taking heat from the ground are called “ground-water“. Heat is extracted using an underground collector. A heat carrying liquid is pumped through these pipes connected to the heat pump evaporator. The heat carrying liquid is non-freezing and ecologically harmless. Circulating liquid is cooled down in the heat pump evaporator and it is re-warmed in the underground collector by means of geothermal heat.

GHP20/B-DNNNE, designed and tested by European standard EN14511, approved and tested by TUV china branch. Characterized by its high COP, competitive price and perfect quality.

HISEER geothermal ground source heat pump adopts the following world famous parts:

Siemens controller
SWEP or GEA plate type heat exchanger
Daikin compressor
Schneider A/C contactor
Emersion expansion valve
Emersion dry filter
Honeywell R410a refrigeration

HISEER GHP20/B-DNNNE, ground source heat pump, works by using heat stored in the ground from the sun's solar radiation to supply all of the energy required for a home's heating and hot water system.

How it works
There are three important elements to a ground source heat pump:

1.The ground loop
This is comprised of lengths of pipe buried in the ground, either in a borehole or a horizontal trench. The pipe is usually a closed circuit and is filled with a mixture of water and antifreeze, which is pumped around the pipe absorbing heat from the ground. The ground loop can be:
•Vertical, for use in boreholes
•Horizontal, for use in trenches
•Pound/Lake installation

2.A heat pump
In the same way that your fridge uses refrigerant to extract heat from the inside, keeping a ground source heat pump extracts heat from the ground, and uses it to heat your home.

3.Heat distribution system
This consists of under floor heating or radiators for space heating and in some cases water storage for hot water supply.

ADVANTAGES:

Suitable for the coldest winter area
The most high efficiency heat pump
Maintenance free
Indoor side installation
No noise level to disturb your neighbor

Reducing your carbon emission
Enjoying your green life by installing HISEER heat pumps
Reducing your heating and cooling bill with high efficiency HISEER heat pumps

GHP20-DNNNE technical data

Heat pump		Type	GHP20/B-DNNNE
Dimensions, weights, connection dimensions
Dimensions		HxWxD	960x600X600
Weight		kg	165
Refrigerant		Type	R410A
Filling weight		kg	3.4
Permissible operating pressure		Mpa	4.2
Pipe connector-hot side		Inch	G11/2”
Pipe connector-cold side		Inch	G11/2”
Evaporator		Type	Brazed plate heat exchanger
Condenser		Type	Brazed plate heat exchanger
Compressor			1xScroll
Performance Heat pump
Heat output	at B0/W35	kW	20.3
Power consumption		kW	4.60
Performance factor			4.41
Hot side volume flow		m3/h	3.49
Cold side volume flow		m3/h	4.50
Heat output	at W10/W35	kW	25.7
Power consumption		kW	4.68
Performance factor			5.49
Hot side volume flow		m3/h	4.42
Cold side volume flow		m3/h	6.03
Power		Type	Triple phase with Hitachi compressor
Sound power level		dB(A)	48
The above data is tested by EN14511

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