20/06/2011 PM 9845 0512 02 Page 8 of 36
5. Energy Recovery (ER)
5.1. Description
The energy required in any compression process is mainly transformed into heat. In oil-injected screw compressors, most of
this compression heat is dissipated through the oil system. The Energy Recovery stand alone kit is designed to recover most
of this heat by transforming it into warm/hot water without adversely affecting compressor performance. The water can be
used for various applications.
5.2. Components
The stand alone energy recovery system comprises:
• Completely stainless steel oil/water heat exchanger.
• Thermostatic bypass valve with on/off lever.
• Temperature sensors for water inlet and outlet control.
• Necessary bolts, pipes, hose assemblies, etc.
• The Energy Recovery system also includes thermostats for both the bypass valve of the Energy Recovery unit and the
main bypass valve of the oil filter pipe.
• Flexibles to connect the kit to the main compressor
• Tap flange (except for GA 11-30 kW range)
5 versions are available:
• 2230 0060 90 for 11
+
- 30 kW
• 2230 0060 91 for 30
+
- 55 kW
• 2230 0060 92 for 55
+
- 90 kW
• 2230 0060 93 for 90
+
- 180 (VSD) kW
• 2230 0060 94 for 180
+
- 315 kW
5.3. Labels
Part Number Picture Description
1079 9902 55
Warning label – hot surface
1622 5529 00
System operation remark
1079 9913 79
Water in
1079 9913 69
Water out
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