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Question: 6 a building with a heat loss of 200000 btuhr...

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6. A building with a heat loss of 200,000 Btu/hr is heated by warm air that is supplied at 135 F and a humidity ratio of 0.006 lbmv/lbma. Air returns to the furnaces at 65 F with no significant change in humidity ratio. Find (a) the mass of air that must be circulated per hour for heating, and (b) the cfim at inlet conditions.
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