Renewable Energy - Heat Pumps

Heat pumps work in a very similar way to how a refrigerator works, but in reverse. There are a number of different systems that all work by removing low level heat from one source and transfer it to another, e.g. a heating system.

 

The main types of heat pumps are

1) Ground source 

2) Air source.

 

During the summer, solar heat is stored in the surface layer of the soil. In the bedrock there is also a source of heat that stays at practically the same temperature all year round.  The Ground Source Heat Pump system involves laying pipes either vertically or horizontally in the ground through which a liquid is pumped to harness this heat. This is then pumped back to your house. The system works best with an under floor heating system but newer systems can heat individual radiators.

 

 

 

 

Air Source Heat Pumps work in a similar way to the ground source system. Instead of heat being extracted from the ground it is extracted from the air by a unit that is sited outside. Whilst not as efficient as ground source heat pumps, air source heat pumps have a number of practical and cost advantages in terms of lower capital costs and no need for ground loops.

 

 

 

 

Both these systems are not fully renewable unless the electricity used for the pump comes from a renewable source.

 

 

For further information please ring the Sustainable Housing & Affordable Warmth (SHAW) team on 0114 273 5837. You can also email the team on shawteam@sheffield.gov.uk.