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Use
of AARP in Gas / Liquid fuel based Captive Cogeneration Plants
Waste heat utilization using
AARP greatly improves Cogeneration System efficiency from
typically 30 - 45% to 70 - 90%.
Utilization of heat
rejected (wasteheat) from Reciprocating engine or Gas turbine to
produce refrigeration using AARP is done in following
ways.
Exhaust gas of Reciprocating
engine genset is typically in the temperature range of
HFO Engine Genset : 325oC
Gas Engine Genset : 350oC to
600oC
HSD Engine Genset : 350oC to
550oC
This heat is recovered and can
be used
to drive AARP which can give refrigeration down to -55oC.
Engine Jacket hot water heat is
used to drive hot water driven AARP. The typical temperature
range of this hot water is 80oC to 121oC (above
100oC, it is
called ebullient cooling). The AARP running on this hot water
gives +3oC to -10oC temperature. The
heat from exhaust of Gas Turbine is recovered to drive the AARP.
The typical temperature of Exhaust gas ranges from 450oC
to 550oC and AARP can give refrigeration upto -55oC.
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