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(BV2) controls the oil flow through the oil/water heat exchanger (HE) of the ER unit. Both valves
consist of an insert (thermostat) mounted in a housing.
Flow diagram of compressor with energy recovery system
Reference
Designation
Reference
Designation
BV2
Thermostatic bypass valve of ER
unit
OF
Oil filter
HE
Oil/water heat exchanger (ER
unit)
AR
Oil separator vessel
E
Compressor element
BV1
Thermostatic bypass valve in oil
filter housing
Co
Oil cooler (compressor)
Ca
Aftercooler (compressor)
1
Water inlet
2
Water outlet
BV1 starts closing the bypass line over the oil cooling circuit at the lower limit of its temperature
range. At the upper limit of its temperature range, the bypass line is completely closed and all the
oil flows through the oil cooling circuit.
BV2 starts closing the bypass line over the ER heat exchanger (HE) at the lower limit of its
temperature range. At the upper limit of its temperature range, the bypass line is completely
closed and all the oil flows through the main oil cooler (Co).
Bypass valve BV1 starts opening at 71 ˚C (160 ˚F) and is completely open at 85 ˚C (185 ˚F).
Bypass valve BV2 starts opening at 75 ˚C (167 ˚F) and is completely open at 90 ˚C (194 ˚F).
The ER system can be provided with bypass valves on the water side.
When the ball valves are in position (A), as shown on the ER label, the ER unit is integrated in
the water circuit and will recover energy.
When the ball valves are in position (B), the heat exchanger (HE) is bypassed and no energy will
be recovered.
Instruction book
84
2920 7118 31
Содержание GA 11+
Страница 1: ...INSTRUCTION BOOK OIL INJECTED ROTARY SCREW COMPRESSORS GA 11 GA 15 GA 18 GA 22 GA 26 GA 30 ...
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Страница 44: ... BOOT Software nr Instruction book 42 2920 7118 31 ...
Страница 81: ...5 4 Pictographs Description Pictographs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Instruction book 2920 7118 31 79 ...
Страница 99: ...Prefilter components Reference Name 1 4 Prefilter Instruction book 2920 7118 31 97 ...
Страница 109: ...7 6 Stopping Control panel Elektronikon Touch Control panel Elektronikon Swipe Instruction book 2920 7118 31 107 ...
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