Suppose we wish to control supply air from an air handing unit, such that the supply air CO2 concentration is 700ppm, the outdoor air CO2 concentration is 400ppm, and the exhaust air CO2 concentration is 1000 ppm. Assume the air handing unit serves just one zone and at this particular time, the air is not conditioned.
– If the well-mixed zone air is 24C degrees and 50% RH and the supply air is 20C degrees and 40% RH, what are the dry-bulb temperature and relative humidity of the outdoor air?
– As part of your solution, sketch a basic psychrometric chart and label the supply, outdoor, and zone air.
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