Function of a heat pump

Here the pressure is reduced and the refrigerant cools down.

Free Cooling makes it possible to cool the flat naturally in summer. The heat pump is not in operation, so the function is practically energy and cost neutral.

With the free cooling function, heat is extracted from the room on hot summer days and stored in the geothermal probe. In winter, this stored heat can then be used for heating.

A Swiss heat pump from CTA with inverter technology heats much more efficiently: The heat output adapts optimally to the effective demand depending on the season, which thus keeps electricity consumption as low as possible.

The monobloc heat pump combines the central components (cooling circuit) and functions of a heat pump in a single housing, which produces heating energy from the thermal energy in the ambient air. Water or a water-glycol mixture flows in the connecting pipe to the inside of the house.

With the split design, the cooling circuit is distributed over two units. There is an indoor and an outdoor unit. Refrigerant flows in the connecting pipe.

The effectiveness of a heat pump describes the ratio between usable heat and the electrical energy used for it. The higher the efficiency, the more energy-efficient the heat pump. The efficiency is usually indicated with a COP value, sometimes also with the SCOP or the JAZ value.

Absorbs heat from the air, the earth or water. The refrigerant, which is initially liquid, evaporates here and becomes gaseous.

The refrigerant is compressed here and thus heats up.

The refrigerant condenses and is released here into the heating system (radiators, underfloor heating pipes).

Quite simple, actually. Like a refrigerator. A refrigerator extracts heat from food and transfers it to its environment. A heat pump extracts heat from its environment and conducts it to where it is needed. Into your living space. To generate 100% heating power, the heat pump needs about 15 to 25% electricity. The rest is free heat from nature.

Air and geothermal heat, which serve as heat sources for the heat pump, provide sufficient heat to heat a building even on very cold winter days.

Yes, certain heat pumps can also be used to cool living spaces in summer. There is passive (Free Cooling) and active cooling. For this, the heat pump must be reversible, i.e. the thermodynamic process can also be reversed: The heat pump extracts heat from the living spaces.