Question

20. An air conditioned theater is to be maintained at 80 oF dry bulb
temperature and 50% RH(h = 31.35 Btu/lb). The calculated total
sensible heat load in the theater is 500,000 Btu/hr, and the latent
heat load is 150,000 Btu/hr. The air mixture at 84 oF db and 72 oF wb
temperature(h = 35.82 Btu/lb) is cooled to 63 oF dry bulb and 59 oF
wet bulb temperature (h = 25.78 Btu/lb)by chilled water cooling coils
and delivered as supply air to the theater. Calculate the tons of
refrigeration required.

A. 83 B.130 C.127 D.122

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