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Question

11.1 Two thousand cubic feet per minute of saturate

moist air at 50 °F and a pressure of 14.696 psia

heated to 120 °F in a single-pass, cross-flow he

exchanger. Hot water enters at 180 °F at a vol

metric flow rate of 30 gpm. The hot water is mixe

the air is unmixed. Determine:

(a) the leaving-water temperature,

(b) the value of the correction factor F,

(c) the value of LMTD,

(d) the heat-exchanger effectiveness,

(e) the fluid capacity-rate ratio,

(f) the value of NTU, and

(a) the overall UA product.

Fig: 1