Soil-water mini geothermal ground source cooled heat pumps

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.

Heat pump

Type

GHP30/B-DNNNE

Dimensions, weights, connection dimensions

Dimensions

HxWxD

960x600X800

Weight

kg

200

Refrigerant

Type

R410A

Filling weight

kg

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

Compressor

2xScroll

Performance Heat pump

Heat output

at B0/W35

kW

31.0 

Power consumption 

kW

7.00 

Performance factor

4.43

Hot side volume flow

m3/h

5.33 

Cold side volume flow

m3/h

6.88 

Heat output

at W10/W35

kW

39.0 

Power consumption 

kW

7.14 

Performance factor

5.46 

Hot side volume flow

m3/h

6.71 

Cold side volume flow

m3/h

9.13 

Cool output

at W35/W7

kW

32.60 

Power consumption 

kW

6.80 

Performance factor

4.79 

Inside volume flow

m3/h

5.61 

Outside volume flow

m3/h

6.78 

Power

Type

Triple phase with Hitachi compressor

Sound power level

dB(A)

49

The above data is tested by EN14511