6 Energy recovery (optional)
6.1 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
106 2920 7109 51
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