How Ecodan works

How Ecodan Works

How Ecodan Works

Mitsubishi Electric’s heating systems use heat pump technology to provide heating and hot water where required. Our heat pumps require only a small amount of electricity to harvest, upgrade and move heat from one location to another.

To achieve this a vapour compression cycle is used, which has the ability to move heat from one space to another. The efficiency of a heat pump is known as the Coefficient of Performance or COP. This is a ratio of the heat delivered to power consumed.

The technology inside the heat pump is similar to any domestic refrigerator, which uses the vapour compression cycle. The main components in the air source heat pump are the compressor, the expansion valve and two heat exchangers (an evaporator and a condenser.

Vapour Compression Cycle

  1. Compression – Refrigerant vapour is raised in pressure and therefore temperature.
     
  2. Condensing – This hot pressurised refrigerant vapour is then passed through a condenser, where it liquefies and gives off useable heat that can be delivered to a building by either air or water.
     
  3. Expansion – Liquid refrigerant is then allowed to expand, which lowers its pressure.
     
  4. Evaporation – The low pressure liquid then expands and absorbs naturally occurring heat from the environment (this can be from the air, water or ground) and in doing so changes back to a vapour, which is then passed to the compressor for the cycle to start again.
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Air Source Heat Pumps
Ground Source Heat Pumps