Ground Source Heat Pumps (GSHPs) use low level heat energy created by solar gain in the near surface layers of the earth to extract energy which can be used for space and water heating. In principle, a GSHP uses a refrigeration system in reverse to extract low temperature heat from one location (the ‘source’) and deliver higher temperature heat to another location (the ‘sink’). Electricity is used to drive the pumps. This operational principle can be used to produce heating as well as cooling energy.
Heat Pumps use refrigerant gases and a compressor to absorb heat from the ground or ground water. This in turn delivers heat to the target building. A heat exchanger, called an evaporator, is used to interface between the fluid from the buried pipes and the heat pump. GSHP systems use the gained energy to heat another fluid – usually water – via another heat exchanger, called a condenser. This can be used to distribute the heat (at ~40-65ºC) in a building and return it to the heat pump at about 35ºC.
The efficiency or SCOP (Seasonal coefficient of performance) is very much dependent on the temperature of a heat source and the output temperature of the heat pump. The higher the heat source temperature and the lower the output temperature of a heat pump, the better efficiency. Most modern GSHP’s can achieve SCOP’s of 4 or more, with the best performing being able to achieve around 6 if used efficiently.
Applications
GSHPs are commonly used for space heating utilising water as a distribution medium. Radiators can be used to deliver heat into the space; however, they are particularly suitable and most efficient for low-temperature distribution systems such as under-floor heating.
Specialists in:
Sewage Treatment Systems
Ground Source Heat Pumps
Water Supply and Soakaway Boreholes
SEWAGE TREATMENT:
Since 1984 H.D. Services has been developing sewage treatment systems culminating with the introduction of their HD-SM in 1994. Over the years we have installed hundreds of HD-SM sewage treatment systems throughout southeast England serving thousands of people.
Our unique modus operandi covers design, supply, installation, commissioning, and servicing. We do not employ agents to sell or install our systems and can take full responsibility for ensuring the discharge complies with the consent issued by the Environment Agency.
GROUND SOURCE HEAT PUMPS:
H.D. Geothermal is part of H.D. Services Ltd, a fully MCS accredited company. We aim to provide the highest quality Open-Loop Ground Source Heat Pump service available in South East England. Our customers can rely on our advice and flexibility to suit their individual requirements and we associate ourselves with suppliers who adopt a similar ethos. H.D. Services Ltd is committed to completing contracts on time and use only directly employed labour.
DRILLING SERVICES:
H.D. Services Ltd. has been constructing water supply and soakaway boreholes in the South East of England since 1984. We have been members of the Well Drillers Association (WDA) since 1988 and have a vast knowledge of the hydro-geology. This means that we can generally confirm the feasibility of a proposed installation upon receipt of a site postcode.
We aim to provide the highest quality, percussion-drilled water supply borehole service available. Our clients depend on our advice and flexibility to suit their individual requirements and we in turn associate ourselves with only those suppliers that have a similar ethos. We are committed to completing contracts on time, using only directly employed labour and our own modern plant.
All drilling works associated with our renewable heating installations and sewage treatment systems are carried out in-house. An initial telephone call to our offices will result in the receipt of a budget proposal with prices for consideration at your leisure. Our engineers can visit the site, free of charge and without obligation, to assess and measure the site.
H.D. Services Ltd are BS EN ISO 9001 and BS EN ISO 14001 certified
PRODUCTS AND SERVICES
Sewage Consultants Services
Sewage Consultants' Equipment & Supplies
Tank Work & Tank Cleaning
Wellborers & Sinkers' Services
Ground Source Heat Pumps
approvedbusiness.co.ukHD Services Ltd Tel: 01494 792 000
