HVAC Engineering Fundamentals: Part 2
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erations require high rates of exhaust and makeup air, with a means
of removing contaminants from the exhaust. Machining operations
usually generate an oil mist which is carried in the air and deposited
everywhere. The HVAC system can be designed to control this problem
to some degree. Painting processes also involve large quantities of ex-
haust and makeup air, control of space pressure, and removal of con-
taminants from the exhaust air. Flammable vapors are often of con-
cern; some processes generate heat and combustion products. Many
processes offer opportunities for heat reclaim. Manufacturing provides
many opportunities for innovative HVAC design. Industrial hygiene
criteria complement HVAC criteria in these environments.
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