Carlo Gavazzi
Heat Pumps
In many countries, new buildings, as well as refurbished ones, have to use a certain percentage of renewable energy. As Heat Pumps use thermal energy from the earth or from the air, which is renewable, they are being more and more frequently installed in heating and cooling systems in residential buildings and infrastructures. Since in buildings there is no specifically trained operator, a number of features are of prime importance.
Models from 12 A to 95 A ensure complete coverage of scroll compressor capacity. In some countries there are specific restrictions on peak current, making soft starter installation mandatory. Our soft starters are also able to fit into the smallest cabinets. When installing a heat pump there are two options, based on the power required. One option is to calculate the heat demand of the building at the coldest time of the year and install a heat pump with the power to cope with this demand.
The disadvantage of this is that the installation is more expensive and the machine runs most of the times at partial load, affecting the COP (Coefficient of Performance). The other option is to install a lower-powered heat pump for less demanding conditions and use an alternative energy source as support for the remaining time. This means a lower installation cost and better overall performance, which counterbalance the reduction in COP caused by the electrical resistors, as they are in use for a limited number of hours per year. In this scenario our solid state relays RGC2P help modulating the heat delivered by the resistors, improving the overall COP of the machine.
Source: http://www.gavazzi-automation.com/Download//Pdf/HVAC%20BRO%20ENG%20REV%2004%202013_12.pdf
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