Why are energy savings through heat recovery from compressors important?
As a result of the continuous rise in electricity prices, the efficient use of energy is not only important for the environment but is also an increasing economic need. Compressor manufacturers can provide various solutions in this regard, such as heat recovery systems produced by compressors. Users who want to save more with their compressed air station can choose one of the following heat recovery methods: Air heating: the simplest and most direct method of recovering the heat generated by a fluid/oil-cooled screw compressor is to use the heat from the heated cooling air resulting from the compressor. This heated air is directed with the help of a pipe to be used to heat the rooms in warehouses and workshops. Hot air can also be used in other applications such as drying, heat curtains, and preheating the combustion air. When heated air is not needed, it is released to the outside through a flap or manual or automatic blind. The blind can be adjusted with a thermostat to maintain the desired constant temperature. Metoda de încălzire a încăperilor permite recuperarea a 96% din energia electrică consumată de un compresor cu șurub. Acest lucru este avantajos chiar și pentru echipamente mici, deoarece un compresor 7,5 kW poate să producă cu ușurință suficientă căldură pentru a încălzi o locuință obișnuită. Hot water: hot water can be recovered for various purposes from the air or water-cooled compressor using a heat exchanger installed in the cooling oil circuit of the compression block. Heat exchangers with plates, standard or self-protected, are used, depending on the purpose for which the water is used: for heating, laundry or showers, production, or wet industrial cleaning. With the help of these heat exchangers, water temperatures of up to 70ᵒ can be achieved. Experience shows that for compressors with a capacity of 7.5 kW and up, the additional costs for these heat recovery systems are amortized in two years, of course, provided a correct sizing.