1.

When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by

A. (h - hf1)/2257
B. (h + hf1)/2257
C. (h × hf1)/2257
D. None of these
Answer» B. (h + hf1)/2257


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