Home > categories > Machinery & Equipment > Heat Exchanger > Water at 180F is pumped at a rate of 100ft^3 /hr through a heat exchanger to reduce the water temperature to 1?
Question:

Water at 180F is pumped at a rate of 100ft^3 /hr through a heat exchanger to reduce the water temperature to 1?

Chemical Engineering Calculations withour reactions. Water at 180F is pumped at a rate of 100ft^3 /hr through a heat exchanger to reduce the water temperature to 100F. Finda the rate at which heat is removed from the water in the heat exchanger Please help me step by step process

Answer:

James' method is correct. However: (i) water at 180F weighs only 60.6 lbs/ft3 (ii) the flow is 100 ft^3 per hour. The heat removal rate is approximately 485,000 BTU/hour
(180 -100) = 80 =temperature drop 1 btu per pound of water per degree 1 cubic foot weights 62.42 lbs 80degrees x 1 btu/ lb degree x 1000ft^3 / hour x 62.42 lb /f^3 =4.99 x10^6 btu/hr

Share to: