Air Source Heat Pumps

How An Air Source Heat Pump Works

30% Less Starting Current RequiredThe technology that is found in an Air Source Heat Pump is similar to that found in a refregiration unit, only it works in reverse, turning cooler air into warm air and expelling it into your heating system. The heat pumps supplied by Eden Heating Solutions Ltd can also be used in reverse so that they can be utilised as an air conditioning unit during the summer time.

To help explain how the heat pump system works we have explained the main processes and referenced to them a helpful illustration shown below.

Step 1 - The Compressor

The heat pump forces cool low pressure gas into the compressor which compresses the gas and it's temperarure is increased as it's volume decreases. What started off as a cool low pressure gas is now a high pressure gas with temperature ranging between 75 and 125 degrees.

Step 2 & 3- The Heat Exchanger

After the gas has been compressed it is then forced into the heat exchanger (condenser) where it is used to heat the water that is subsequently passed through your wet heating system. The process of heating the water in turn cools the gas, as the gas loses it's temperature it condenses into a liquid.

How An Air Source Heat Pump Works

Step 4 & 5 - Expansion Valve

Now that we have a warm(ish) liquid it is then passed through the expansion valve. During this process the liquid is expanded to reduce the temperature further.

Step 6 - The Evaporator

The evaporator completes the cycle of an Air Source Heat Pump. Following on from step 5 the cool liquid is passed through the evaporator. The evaporator is a coil that has outside ambient air passing over it (drawn in by the systems fan) that heats the coil and liquid. The liquid that is being used in the system can have a boiling point as low as -45 degrees, so by the time it reaches the end of the coil it is evaporating, turning it into a low temperature and low pressure gas. The gas gets sucked into the compressor as in step 1 and the process starts all over again!

Further Queries?

Should you still have some queries about how an Air Source Heat Pump functions or not sure that a heat pump is suitable for your needs, please feel free to contact us to arrange for a fully trained engineer to meet with you at your convenience to discuss your requirements further.