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Devon Renewable Energy Ground Source Heat Pumps
Ground Source Heat Pumps

Ground source heat pumps provide one of the most clean and environmentally friendly methods of providing heat for any type of building. They utilise the renewable energy which is stored in the ground. This provides one of the most efficient means of heating in terms of energy expended. These ground source heat pumps are suitable for practically any type of building and are especially suited for use in developments where a low environmental impact is desired.

These ground source heat pumps do not require hot rocks as with geothermal energy. They are also suitable for installation across most of the UK. They require the use of either a borehole or a series of shallow trenches. It is also possible (although used far less common) to extract heat from a body of water, such as pond or lake. Heat is collected in pipes which are laid in a closed loop and contain water (mixed with a small quantity of antifreeze) and this absorbs this heat stored in the soil, this water can then provide both space heating and domestic hot water.

Your home may not have the room for sufficient trenches to be dug to form a 'Horizontal Loop'. In this case a Borehole or 'Vertical Loop' system is most appropriate. One or more boreholes will be drilled down to a pre-determined depth. A pipe is then fitted into the borehole, usually either 32mm or 40mm pipe (around 1.25 or 1.5 inches). The pipe forms a loop which is then connected at both ends into a manifold that is connected to the heat pump. Water with antifreeze is then pumped through the system. This water absorbs the heat from the ground. The difference in the waters temperature between leaving and returning to the pump is enough to be passed through a compressor and used for heating your home.

Devon Ground Source Heat Pumps

It is important for the borehole to be drilled and constructed correctly. Particularly, attention needs to be paid in grouting of the hole properly. Ground Source Heat Pump Boreholes need a close fitting pipe in the borehole, any gaps between the pipe and the soil mean that the system will not be as effective as it should.

Our own Geothermal rig is specifically designed for drilling to our needs. It is built inside the UK, so it conforms to all relevant Health and Safety regulations. The Dando MTEC 6 is one of the smallest rigs available anywhere in the world and is able to pass through gaps just 1400mm wide (barely 4.5 ft). This lets us drill in many sites where access is restricted (e.g. narrow entry ways). The size of the rig has no affect on its performance, it can comfortably drill to depths of over 150M (500 ft).

We have the experience and expertise in drilling boreholes for Ground Source Heat Pumps. Our teams can drill the borehole to the supplier’s exact specification. We can even offer advice on the suitable number of boreholes and what depth will be required to your chosen supplier. We work very closely with several well respected suppliers and installers of ground source heat pumps and are happy to make a recommendation.

Geologic Boreholes and Systems welcome the opportunity to discuss with you your interest in any aspect of Ground Source Heat Pumps and exactly how they would work for you in heating your home or office or any building that you want to keep warm using a renewable source.

Geologic Boreholes and Systems are committed to the highest quality in customer service.

"I cannot praise highly enough the standard of service I have received for Geologic Boreholes & Systems Ltd, highly enough..." - Rod B. Taunton.

Geological Boreholes are specialists in the drilling and equipping of boreholes and work across Devon and Cornwall.

Devon Borehole Specialists Accredited members of the British Drilling Association

Devon Renewable Energy Ground Source Heat Pumps
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Devon Renewable Energy Biomass Boilers
Devon Renewable Energy Biomass

Devon Renewable Energy Suppliers, Bramshaw heating and plumbing, give an overview on the benefits of having a biomass boiler, whcih provides renewable Energy.

As the cost of heating with natural gas and fuel oils continues to rise and there is increased pressure to find an alternative energy solution to fossil fuels, businesses are being pushed towards the use of biomass fuels as a means of generating heat.

This means that we have to find a way of sourcing a large quantity of economic biomass fuel and also the required equipment to burn this fuel.

What is Biomass?
Biomass is the collective name for all non-fossil organic materials that have an intrinsic chemical energy content. Therefore this includes all land and water-based vegetation and trees, log wood or thinnings from forests, prunings from roadsides or parks, grasses and energy crops. In some countries residues from agriculture or food processing e.g. nutshells or olive pits, wood chips, recycled untreated wood or pelletising residues from wood processing. Also all waste biomass such as household rubbish, sewage, manure, forestry and agricultural residues, and certain types of industrial wastes.  Through using these resources certain problems with waste disposal could provide a high quality fuel at the same time improving local economic turnover, as local wood suppliers of wood fuel would have an increase in income.

Biomass can be not only be used on a domestic scale but on an industrial scale too. The biomass is dried and shredded and is fed into the boiler where the gas is collected to produce electricity and heat. In order to use biomass as a heating fuel in a home you can install either a boiler or alternatively by using a wood burning stove, which can also be an attractive feature in any home.  This boiler could potentially provide all of the water heating and central heating for a house. 


Wood pellet which is a carbon neutral fuel solution has become one of the most economic biomass fuels the world can provide. Unlike fossil fuels, biomass fuels are a managed renewable resource.

Biomass fuels are carbon neutral, and would help to counter act the impacts of climate change, as they don't add any carbon dioxide to the atmosphere. This is becasuse the same amount of carbon dioxide is released during the burning process as is absorbed whilst growing, as long as plants continue to be replenished for biomass energy purposes. 

Wood pellet is formed from good quality wood waste, allowing more complete and effective utilisation of the worlds forestry resource. One load of wood pellet contains the same amount of energy as fifteen equivalent loads of ordinary wood waste.

The wood waste is dried and pressed together in a pellet mill. The temperature produced in this process causes woods natural polymer, Lignin, to be released from the wood which binds the pellet without the need for additional binding agents, which produces a biomass fuel that is consistent, homogenous, easy to transport, store, dose and extremely clean burning. There is very little ash produced when burning wood pellet but the ash that is produced can be used as fertiliser so there is no wastage.

This article is courtesy of Bramshaw heating and plumbing Devon, to find out more click on the company logo.

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