HEAT PUMP AT WORK

The diagram is of a closed-loop hydronic heating system with an air source heat pump. In this type of system, the heat pump extracts heat from the outside air and transfers it to a refrigerant, which then heats water. The hot water is circulated through the house to heat the rooms.

The red line in the diagram shows the flow of the hot water. The water is pumped from the heat pump to the indoor unit, where it is distributed to the various heating circuits in the house. These circuits could include underfloor heating, radiators, or fan coils. Once the water has circulated through the heating circuits, it returns to the heat pump, where it is cooled down and the process starts again.

Here is a more detailed explanation of how the system works:

1. The air source heat pump extracts heat from the outside air using a refrigerant. The refrigerant is a liquid that can easily absorb and release heat.
2. The heated refrigerant is then pumped to the indoor unit, where it passes through a heat exchanger.
3. The heat from the refrigerant is transferred to the water in the closed-loop hydronic system.
4. The hot water is then circulated through the house to heat the rooms.
5. Once the water has cooled down, it returns to the heat pump, where it is cooled down again by the refrigerant.
6. The cooled refrigerant is then pumped back outside, where it can absorb more heat from the air.

The advantage of using a hydronic heating system with a heat pump is that it is very efficient. Heat pumps can extract heat from the air even when the temperature is quite low, which means that they can provide heating even in cold climates.