Generate Water source heat pumps
Water source heat pumps work by extracting the heat from a water source such as a river, lake, spring, well or borehole.
Heat Pumps work just the same as fridges and air conditioning units. Heat will always flow from a warmer source to a colder source so heat pumps take advantage of this by using a special fluid that constantly evaporates and condenses in a closed circuit that is controlled by valves and a compressor, to reverse this natural process. Just like a fridge, heat pumps always need electricity to run but for every kw of electricity they consume, they normally generate 2-4kw.
They are ideally suited to use with an underfloor heating system as this requires a lower running temperature but they also can be used with radiators, warm air convectors and even to heat the hot water in your home
Because water source heat pumps require electricity to run a pump they still make some impact on the environment but they usually use less electrical energy than the heat they produce, so are still a cheaper and greener option that standard electric heating, LPG or solid fuel.
Water source heat pumps Advantages
- All types of heat pumps do not require a boiler or a fuel tank like gas or oil heating.
- Heat pumps do not require chimneys, flues or ventilation.
- Heat pumps only require servicing every three to five years unlike gas and oil boilers which require a annual service.
- Heat pumps systems have a long life expectancy.
- Heat pumps do not require any combustible components or explosive gases unlike gas or oil heating systems.
- Heat pumps do not require fuel deliveries
- The return temperature to a water source heat pump is usually higher than either a ground or air source heat pump particularly in the winter months.
- Water source heat pumps do not usually require large trenches to be dug unlike ground source heat pumps.
Water source heat pumps Disadvantages
- Water source heat pump systems require a large capital investment compared to measures such a roof installation.
- You will still need to use electricity to drive the pump, so an water source heat pump is not classed as completely zero-carbon unless the electricity that powers the pump is provided by a renewable source, such as wind or solar.
- An extraction licence may be required from the Environmental Agency.
- If the water source dries up in hot weather, there will be no heat.
You can get grants for Water source heat pumps, below are the schemes this is available with.
* According to data sourced from the Energy Saving Trust website.