Currently, electric heating is the most ecological heating source because it does not produce any harmful substances and has zero CO² emissions. An electric boiler is a device that works in virtually every heating installation. However, if our choice falls on a heat pump , the remaining elements of the heating installation should be selected so that they work properly in combination with a low-temperature heat source. What devices should such an installation include and should a buffer tank be among them? KOSPEL experts respond.
Please remember that a heat pump is a low-temperature heating source, so the devices cooperating with it should be able to effectively transfer heat to the installation. The exchanger heating domestic water should have a large heating surface of the coil. The conversion factor assumes 0.25 m² of coil for each kilowatt of pump power. Currently, KOSPEL's offer includes exchangers recommended for use with a heat pump, including SWPC, an exchanger with the largest coil heating surface of 4.22 m².
What conditions should a complete installation with a heat pump as the main heating source meet?
A heat pump is a device whose operation method is largely dependent on the outside air temperature. When the air temperature is extremely low, the device turns on electric heating. Of course, this is a situation that currently occurs only a few days a year in our climate, in extremely cold winters. However, if the outside air temperature is too high, the pump may turn the compressor on and off many times, thus generating greater electricity consumption. This is also a phenomenon that disturbs the smooth operation of the pump, so it should be eliminated. How? KOSPEL experts advise.
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Buffer tank as a safety guard in a heating installation using a heat pump.
The buffer tank is used to store heating water. In installations using an electric boiler, the buffer supports the economical use of the boiler, but in cooperation with a heat pump it has a different task. By introducing hot water into the buffer tank and transferring it to the heating installation directly from the buffer, it limits the compressor's switching cycles, which makes the heat pump operate more smoothly. This ensures its safety and increases its service life many times over. It should also be remembered that the air-to-water heat pump has a defrost function, which involves defrosting the device at negative temperatures. This function is also supported by the buffer tank, thanks to which the defrosting of the heat pump works more efficiently and without additional electricity consumption. By ensuring the correct flow and supply temperature in the heating system, the buffer has a positive effect on its condition, thus extending its service life.