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Retrotec USACE User Manual

Page 242

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D112 ENERGY & PROCESS ASSESSMENT PROTOCOL

Figure D175. Plating tank exhausts: 1.2-meter
(4-foot)-wide tank with push–pull exhaust
system (top), hood on both sides of the tank
(top right), large hood behind the plating tank
(bottom).

D.7.2.5 Exhausting Clean Exhaust Greater Than 93.3 °C (200 °F)
(Waste)

Figure D176. Exhaust systems from a plating
shop exhaust some heated air.

The temperature of the exhaust from a heated plating tank may have heat that
could be economically recovered (Figure D176). If these exhaust gases are
clean of particulate, this is an opportunity for the use of an economizer, which
would transfer heat from the exhaust to preheat water from some process need
or for domestic uses.