Expert water source heat pumps installers
Water source heat pumps (WSHP) are a highly efficient way of tapping into and harnessing the solar radiation stored in underground sources of water. Solar radiation charges the ground and rock throughout the year, with the water which passes through conducting this radiated heat. Because of the year round radiation and the fact that water is a high conductor of heat energy, the underground water source remains at an almost constant temperature all year round. Like ground and air source heat pumps, the water source heat pump maximises the renewable heat through a heat exchanger interface, which provides a consistent temperature to start the refrigeration cycle within the heat pump.
The geology under the site will determine whether a water source heat pump is an appropriate option compared to a vertical borehole filled with a collector loop supplying a ground source heat pump. If there is determined to be an underground volume of water known as an aquifer it could be possible to pump this water to the surface, through a heat exchanger and then return it to the same aquifer. The rate of extraction required is determined by the heat demand of the building and can be subject to permit depending on the flow rate.
A geo/hydrological report on the site is a good investment to gain an understanding of what the potential is. Ecoliving can arrange this for you.
Difference Between Water and Ground Source Heat Pumps
- The main difference between water source and ground source heat pumps is that water source do not employ a closed loop system with a water/antifreeze mix flowing through. Instead water source heat pumps are referred to as open loop systems where the groundwater is pumped to the surface and though a heat exchanger.
- The advantage of water source heat pumps is that the temperature from the ground water being transferred to the refrigerant in the heat pump is generally higher which benefits the efficiency of the system. On the other hand, an additional pump is required to get the water to the service which requires energy and it needs to be maintained.
- Another advantage of water source, particularly on larger commercial projects, is that often fewer boreholes need to be drilled than for ground source and not as deep which reduces the drilling costs.
Free Heat Pump Survey
Often it is the characteristics and geology / hydrology of the site that determine which system is most appropriate and this is something that Ecoliving can help determine.
In all other respects water source heat pumps perform in the same way as ground source.
Ecoliving has installed a water source heating system for The Tall Ship at Glasgow's Riverside, making it the first floating museum ship in the world to be heated using renewable energy technology - For an operational, domestic-scale project click here.
Alternatively, find out if a water source heat pump is the most appropriate primary heating source for your new build or existing home now or by calling us on 0845 301 3121.