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TEN REASONS TO CHOOSE GROUND SOURCE HEAT PUMPS

There are ten key reasons to use Ground Source Heat Pumps:

 1.  Ground source heat pump installations have very low running costs because
     they exploit the fundamental characteristic of the ground to act as an
     efficient store of thermal energy. In very cold weather, when heating is
     most needed, a ground source heat pump has access to warmer temperatures
     from the ground than an air source heat pump has from ambient air.
 2.  The Thermal Energy Storage capacity of the ground allows GSHPs to be used
     efficiently at all hours of day and night – this provides the opportunity
     to use GSHPs at night when electricity is cheaper.
 3.  GSHPs do not suffer the problems of "intermittency" that effect renewable
     energy from wind turbines, photovoltaic cells or solar thermal panels.
     Indeed the Thermal Energy Storage capacity of the ground can be used to
     compensate for the intermittent supply of energy from other renewable
     sources.
 4.  Ground Source Heating provides one of the most economic routes to providing
     on-site renewable heating, reducing emissions of greenhouse gases and
     meeting the government's binding targets on renewable energy.
 5.  Although ground source energy requires upfront investment, the reductions
     in emissions of greenhouse gases are very great and an investment in ground
     source energy lasts much longer than other investments in renewable energy.
     The ground works installed for ground source systems, a major part of the
     cost, can be expected to last for over 100 years. The ground source heat
     pumps themselves are very reliable pieces of equipment with a long life –
     longer than air source heat pumps which have to be located outside, have
     more moving parts, including air circulation fans, and need to incorporate
     energy-consuming defrosting elements to contend with the formation of ice
     in winter. GSHP installations compare favourably with all other forms of
     Renewable Heating and all other mechanisms for generating Renewable
     Electricity in terms of life span.
 6.  GSHP systems are good citizens: they are silent, free from polluting
     chemicals, reliable and invisible. They are welcomed by planning
     authorities and architects. They produce no carbon emissions on site, and
     none at all if powered by renewable electricity. There have never been any
     political objections to GSHP systems in the way that wind turbines have
     caused unrest and resentment and expensive government schemes on other
     technologies have raised eyebrows at the wisdom of excessive government
     spending.
 7.  GSHP systems, uniquely amongst renewable energy technologies, offer the
     opportunity to recycle heat energy. Heat energy can be captured when it is
     freely available in the summer, stored in the ground over the autumn, and
     released to heat buildings in winter. This singular merit is attributable
     to use of the ground for Seasonal Thermal Energy Storage, which is an
     integral part of ground source energy.
 8.  Unlike any other form of Renewable Technology the power of a heat pump can
     be reversed in summer to provide cooling. In the case of an air source heat
     pump (or an air conditioning chiller) heat taken out of a building in
     summer is merely "wasted" to the atmosphere. It is a very expensive option
     to provide cooling by heat exchange with hot air. The radical, renewable
     cooling, alternative is to use a ground source heat pump to heat exchange
     with cold ground: the primary advantage is that it is much more efficient
     than heat exchanging with hot air.
     The secondary advantage is that a by-product of renewable cooling is to
     deposit heat into the ground – in advance of the time in winter when the
     heat pump will be looking to extract heat from the ground.
 9.  Many forms of investment in renewable energy require imports as equipment
     like photovoltaic panels, wind turbines and solar panels come from abroad
     and provide employment abroad. Investment in sound ground source energy
     installations, which requires a detailed understanding of the local geology
     and local conditions, provides skilled employment in Britain for the local
     expertise in designing an appropriately sized system and local employment
     in installing the ground works.
 10. GSHP systems contribute to the Energy Security of the UK by providing
     heating and cooling from energy which occurs naturally in the UK, instead
     of relying on imported fossil fuels.

 

Ground Source Heat Pump Association
39 Dryburgh Road
London SW15 1BN
info@gshp.org.uk
0330 2234 302
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