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Ground Source Geothermal Heat Pumps

Drawing as much as 75% of the energy needed by the heating system from freely available, inexhaustible solar energy stored in the ground, Dimplex ground source heat pumps are available in an extensive range of models types and capacities suitable for either domestic or commercial applications. Due to highly stable temperatures below the earth’s surface, ground source heat pumps provide high levels of efficiency for space and water heating all year round.

Benefits of the ground as a heat source

  • Consistent temperatures below ground throughout the year provide a high Co-efficient of Performance.
  • Can be used for heating, domestic hot water and swimming pools.

At just 1m below the surface, the earth provides a stable source of heat throughout the year. At depths of 15m or more, the earth provides a constant 10°C temperature.

Heat from your garden

The earth stores an enormous amount of solar energy from both solar radiation and rainfall. To extract this energy, ground collectors consisting of flexible polyethylene pipes are buried in the earth, either horizontally or vertically. A mixture of water and anti-freeze is then circulated through the pipe loops, attracting the heat energy and transferring it to the heat pump.

Horizontal ground collectors

If a large enough land area is available, horizontal ground collectors provide an effective method of extracting heat from the ground. The pipework is buried at a depth of approximately 1.25m and spaced 0.75m apart. The land area required is dependent on both the capacity of the heat pump and heat conductance of the soil type in which the pipes are buried.

Vertical boreholes

If land space is limited the ground collectors can be installed vertically in a borehole, drilled up to 100m deep in the ground. Multiple boreholes are commonly used in large installations where very high levels of heat extraction are required.

Available in a wide range of sizes and configurations, Dimplex ground source heat pumps provide a sustainable heating solution for virtually any scenario. As well as being perfectly suitable for use with either radiators or underfloor heating systems, Dimplex ground source heat pumps can also provide domestic hot water. Single phase models are available in outputs from 5-16kW making them ideal for both domestic and light non domestic applications alike, while the option of either stand alone or fully integrated formats provides maximum flexibility to meet the needs of virtually any scenario.

Ground source heat pumps

The popular range of SI ME ground source heat pumps provide flexible system design making them ideal for domestic or light commercial applications.
SI MEK - Integrated ground source heat pumps
The SI MEK range of fully integrated ground source heat pumps provide easy installation and minimises space requirements, with the heat pump manager and key system components all fully integrated into one compact unit.

Range Features

  • 5 models with nominal heating capacities from 5 – 14kW, single phase.
  • Variable heating water flow temperatures from 35°C – 58°C with weather compensation.
  • WPM2007 heat pump manager with removable control panel for installation in a preferred location.
  • Electronic soft start reduces starting current loads.
  • Suitable for use with underfloor heating or radiator systems and to provide domestic hot water.