The operation of screw compressors generates a large amount of heat that can be used cost-effectively. Up to 94% of the electrical energy used for generating compressed air can be recovered as heat through consequent implementation of a heat recovery concept. The heat recovery leads to considerable energy cost savings and is
environment friendly.
One way of recovering heat is to use the heat radiated by the compressor for heating in the form of warm air via exhaust air ducts.
Heat recovery with an oil/water heat exchanger, on the other hand, to heats the process water or heating water up to a temperature of 65°C. The heat is recovered by means of an oil/water heat exchanger. For this purpose, RENNER offers two systems that can also be retrofitted into existing systems and networks:
The integrated plate heat exchanger is installed in the screw compressor and directly integrated into the oil circuit, thus no additional installation space is required. Due to the additionally available water connections, it can be quickly and easily integrated into the in-house water network.
RS-PRO 2.0-11.0 – 18.5
RS-PRO 2.0-30.0 – 55.0
RS 18.5 – 1-30.0
RS 55.0 – 250
The external heat recovery stand-alone unit is installed in a separate housing. Thanks to its compact dimensions and pre-installed connections, it requires little space and can be integrated into the existing system quickly and easily. External energy is not required for operation.
RS-PRO 7.5 – 18.5
RS 18.5 – 1-30.0
RS-PRO 2.0-30.0 – 55.0
RS 55.0 – 132
Double-walled safety heat exchangers are also available for sensitive areas and on request for both systems. Other temperature ranges are available on request.
Usable energy (kW) x hours (h) x fuel oil price (€)
_________________________________________________________________
Calorific value of the oil (kWh/l) x heating efficiency factor
13.18 kW x 1680 h x 0.8 €
______________________________ = 2,113.58 Euro
9.86 kWh/l x 0.85
Established in 1970, AE Industrial & Air Equipment Ltd is a leading company engaged in the supply, installation and maintenance of compressed air, pneumatic controls and product finishing equipment and systems.
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