Technologies

Ground Source Heat Pumps

Types of Ground Source Heat Pump System

Or how to get the heat out of the ground.

GI Energy’s specialist in-house Drilling Division is at the forefront of ground loop installation and is able to undertake all aspects of ground preparation for our clients. We offer the full range of collectors and will design the system that fits best with the available land or water source, the local geology and the building requirements. The different types of collector are described below:

Vertical closed loop

The ideal choice when available land surface is limited, as with many commercial buildings. Drilling equipment is used to bore small-diameter holes from 50m to 250m deep. A single or double u-tube of pipe is grouted into the hole to extract the heat.

Energy Piles

For new build projects, energy piles can be incorporated into the building design. With the ground loop pipes wrapped around the steelwork in the building piles, the need for further drilling and groundwork is significantly reduced.

Open loop

Open loop systems utilise ground water as a direct energy source. In ideal conditions, an open loop application can be the most economical type of geothermal system. The technology also offers an extremely compact installation so it is ideal for city centres where just the space under a pavement or access ramp can deliver many megawatts of heating and cooling.

Pond (lake) loop

This system can be incorporated into buildings that have a source of water such as a lake or a pond nearby. Similar to ground loop systems, pond or lake loop system see piping being submerged into the body of water rather than the ground. Pipes in this case may be longer or coiled round to make use of available space. They can also be connected to stainless steel heat exchangers to extract the energy.

Call one of our specialists on  +44 (0) 24 7667 3131