Ground Sourced Heat Pumps
Improve the efficiency of Ground Sourced Heat Pumps using EndoTherm
Ground Sourced Heat Pumps (GSHPs) use pipes buried underground to extract heat from the ground.
The typical GSHP system contains a loop of pipework containing a mix of water and antifreeze (usually glycol based) that absorbs heat from the ground. This heat is raised internally by a compressor, which can then be used to heat radiators, underfloor and warm air heating systems in a property.
The compressor which heats up the water in a heat pump is powered by another source (typically electricity). The ratio of energy input compared with the heat output is called the ‘Coefficient of Performance’
Traditionally for every kW consumed by the heat pump, 4 kW of energy (heat) is created.
How does EndoTherm improve the efficiency of a GSHP?
The Coefficient of Performance is critical because, although a heat pump can be efficient, electricity is more expensive than gas. If you do not get a high Coefficient of Performance from your heat pump it could be cheaper to use a gas boiler for heating. GSHP manufacturers constantly battle to improve this coefficient to make their heat pumps more efficient.
As well as the benefits of EndoTherm in the building water circuit, EndoTherm can be used to change the properties of the fluid inside the ground loop leading to subtle changes to the temperatures available to the heat pump. This can ultimately improve the Coefficient of Performance of heat pumps and increases the efficiency of the GSHP system known commonly as the Seasonal Performance Factor (SPF).
Double Up with EndoTherm
Install EndoTherm in the Ground Source Heat Pump Circuit AND the Radiator Circuit to maximize your potential savings!
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2 x 110kW GSHP’s were installed under a 3 acre lake adjacent to the estate in September 2009 and EndoTherm was installed into the Primary loop in July 14.
A 6 month trial until January 2015 identified a 16.1% saving (compensated with degree days) compared to the year before. This represented an actual saving of over £2000 and a ROI of about 1 year.
