5 Energy recovery (optional)
5.1 Energy recovery unit
Description
A large part of the energy required for any compression process is transformed into heat. For oil-injected
screw compressors, the major part of the compression heat is dissipated through the oil system. The energy
recovery (ER) systems are designed to recover most of this heat by transforming it into warm or hot water
without any adverse influence on the compressor performance. The water can be used for diverse
applications.
Components
The energy recovery system is completely integrated and mainly comprises:
• Stainless steel oil/water heat exchanger
• Thermostatic by-pass valve for energy recovery heat exchanger(s) (BV2)
• Two temperature sensors for water inlet and outlet control (3 and 4)
• The necessary bolts, flexibles, etc.
• Oil drain plug.
Energy recovery unit (ER-unit)
Main components of the ER unit
Instruction book
2920 7180 30 119
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