Operation of the heat pump

The heat from the source, the Triple Solar heat pump panels, has a relatively low temperature. In the heat pump, the heat is converted into usable heat with a higher temperature for a home – think of heating and hot tap water. The heat pump, which runs on electricity, thus replaces the gas-fired central heating boiler.

Triple Solar PVT paneel uitleg Nibe warmtepomp 2019

The heat pump used is an electric compression heat pump (brine / water). The operating principle of this type of heat pump is the easiest to explain on the basis of its components, the evaporator, compressor and condenser, linked to three phases:

Phase 1: Extracting the heat
An evaporator is located in the heat pump. This evaporator contains a so-called transport liquid, which already evaporates at a low temperature. The ambient heat from the source (the heat pump panels) causes the liquid in the evaporator to heat up and evaporate as a result.

Phase 2: Compressing
The electric compressor in the heat pump then compresses the vapor released. This process increases the pressure in the heat pump and increases the temperature.

Phase 3: Heat release
Thanks to the expansion valve, the vapor is given space again in the condenser. As a result, the pressure decreases and the vapor returns to (transport) liquid. Heat is released during this process. This heat is then routed to the delivery circuit – the heating system or the boiler. The temperature of the heat released is considerably higher than that of the originally absorbed heat. This can now be used for heating and hot tap water.

The transport liquid then flows back to the evaporator, after which the process starts again.

 

how does a heat pump work with Triple Solar?

Advantage compared to other systems

In addition to the Triple Solar® system, there are other comparable systems: the air / heat pump with air box as source and the heat pump with bottom loop as source. The table below shows the advantages of the Triple Solar® system compared to these other systems:

 

Heat pump with Triple Solar PVT panels as source Air / heat pump with air box as source Heat pump with bottom loop as source
Energy source Sunlight, daylight and outside air Outside air Earth (the soil)
Average source temperature during the year High; the combination of three sources ensures optimum energy utilization. Low; the average outside temperature during the heating season is 4.8 degrees. Low; the temperature sometimes drops to 0 degrees during the winter season.
Consequences at temperature below freezing point
Continues to work without problems (cannot freeze), with still a relatively good source temperature. Can freeze: due to the formation of ice, the evaporator can no longer do its job properly and must be defrosted by the heat pump’s defrost function. The heat pump continues to work, but the source temperature remains low after the winter with the outside temperature rising.
Noise level Quiet; no moving parts Fan sound Quiet, no moving parts
Installation and maintenance  Easy to install and maintenance free. Easy to install by a STEK certified company, but requires maintenance. Relatively complex installation; the bottom loop must be installed by a specialized drilling company that must be BRL certified.