A heat pump is a device that plays a crucial role in regulating the temperature in industries and commercial buildings. The commercial models are larger, more powerful and consume more power than domestic types.
Naturally, heat flows from a hotter region to a colder area. The difference in temperature between the two areas creates a temperature gradient, which leads to heat transfer. However, to move heat in reverse, the temperature gradient requires an external power source’s help. That is precisely the work of the heat pump.
The unique feature of a heat pump is that it works in both directions of heat transfer. It can push out heat from a room to provide cooling, and during winter, it doubles up as a heat source.
The Heat Pump as a Cooler
There are four main components of a heat pump. These parts are:
- Condenser: Converts the gaseous refrigerant into liquid form.
- Expansion valve: Regulates the amount of refrigerant flowing into the evaporator.
- Evaporator: Allows the refrigerant to vaporise.
- Compressor: Pumps the refrigerant around the system.
In the cooling mode, the heat pump circulates cold air into a room. The refrigerant in the evaporator absorbs heat from the hot air and expands into a vapour. The compressor then pumps it out to the condenser, where it changes state into a liquid, as it releases heat into the room. The cold liquid flows back into the room for another cycle of cooling, and the process repeats until the temperature reaches a preselected value.
The Heat Pump as a Heater
For commercial heating purposes, the operating principle of the heat pump runs in the reverse. The evaporator, which is located inside the room, takes up the function of a condenser. The coolant exposed to the warmer outdoor temperatures absorbs heat and vaporises.
The compressor sends the vapour into the room where it loses its heat and liquefies due to the lower temperature. The cycle repeats until the room becomes warmer than the outside, or when the temperature reaches a set value.
Choosing the Best Heat Pumps
ST Heating Services Limited offers the best commercial heating services in the UK. Their experienced engineers install heating systems according to the customers’ specific needs. They also provide continuous technical support to keep the heating systems running in top performance. The company serves hospitals, schools, offices, hotels and all major commercial facilities in Manchester and the North West, UK.