Q: Repeat Prob. 19–65 for steam condensing at a rate
Repeat Prob. 19–65 for steam condensing at a rate of 0.60 kg/s. Data from Prob. 19-65: Cooling water available at 10°C is used to condense steam at 30°C in the condenser of a power plant at a rate of...
See AnswerQ: Reconsider Prob. 20–52. Using appropriate software, evaluate
Reconsider Prob. 20–52. Using appropriate software, evaluate the effect of the insulation layer thickness on the outer surface temperature. By varying the insulation layer thickness from 5 to 15 mm, p...
See AnswerQ: Reconsider Prob. 19–65. Using appropriate software, investigate
Reconsider Prob. 19–65. Using appropriate software, investigate the effect of the cooling water average (mean) velocity on the number of tubes needed to achieve the indicated heat transfer rate in the...
See AnswerQ: A hot fluid (kfluid = 0.72 W/m
A hot fluid (kfluid = 0.72 W/m⋅K) is flowing as a laminar fully developed flow inside a pipe with an inner diameter of 35 mm and a wall thickness of 5 mm. The pipe is 10 m long, and the outer surface...
See AnswerQ: Inside a condenser, there is a bank of seven copper tubes
Inside a condenser, there is a bank of seven copper tubes with cooling water flowing in them. Steam condenses at a rate of 0.6 kg/s on the outer surfaces of the tubes, which are at a constant temperat...
See AnswerQ: A hot liquid (cp = 1000 J/kg⋅K
A hot liquid (cp = 1000 J/kg⋅K) flows at a flow rate of 0.05 kg/s inside a copper pipe with an inner diameter of 45 mm and a wall thickness of 5 mm. At the pipe exit, the liquid temperature decreases...
See AnswerQ: Reconsider Prob. 19–68. Using appropriate software, evaluate
Reconsider Prob. 19–68. Using appropriate software, evaluate the effect of the cooling water mean velocity on the rate of steam condensation in the condenser. By varying the cooling...
See AnswerQ: A rigid tank contains nitrogen gas at 227°C and 100
A rigid tank contains nitrogen gas at 227°C and 100 kPa gage. The gas is heated until the gage pressure reads 250 kPa. If the atmospheric pressure is 100 kPa, determine the final temperatur...
See AnswerQ: An average person generates heat at a rate of 240 Btu/
An average person generates heat at a rate of 240 Btu/h while resting in a room at 70°F. Assuming one-quarter of this heat is lost from the head and taking the emissivity of the skin to be 0.9, determ...
See AnswerQ: An average man has a body surface area of 1.8
An average man has a body surface area of 1.8 m2 and a skin temperature of 33°C. The convection heat transfer coefficient for a clothed person walking in still air is expressed as h = 8.6V0.53 for 0.5...
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