Air Source Heat Pumps
Air Source heat pumps don’t actually generate heat; they simply act as a device to move heat from one place to another. By passing air over an external heat exchanger, the heat pump collects ‘low grade’ heat from air and passes it through a heat exchanger in the heat pump. This ‘low grade’ heat is transferred to the refrigerant in the heat pump which is then compressed by the compressor; this has the effect of raising the temperature of the refrigerant creating ‘high grade’ heat. By passing this through a further heat exchanger, ‘high grade’ heat can then be distributed around the house to provide central heating and hot water just as a normal central heating system works.
Though it may seem long winded, this process is actually very efficient. For every unit of electricity that the heat pump uses over the course of the year, a good air source heat pump installation can deliver more than 3 units of heat – that’s an efficiency of over 300%, at least three times better than direct electric heating!
Air source heat pumps or air to water heat pumps can be used with under floor heating or on a low temperature radiator system and they are better suited to operate efficiently in a well-insulated building.
Most projects require just a single air source heat pump to provide all the heating and hot water necessary for the entire year. For heating and hot water on large projects multiple air source heat pumps can be cascaded together to cover the complete annual demand.
If you have a project or are considering a change to your home comfort, please contact us and one of our design experts can help you make the right choice for the years to come.
See the Mitsubishi Electric website: http://heating.mitsubishielectric.co.uk/