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Q2) A double-pipe counter flow heat exchanger is to coo! ethylene glycol (Cp-2560J/kg.°C) flowing at a rate of 3.5 kg/s from 80°C to 40 C by water (Cp-4180J/kg.°C) that enters at 20°C and leaves at 55°C. The overall heat transfer coefficient based on the inner surface area of the tube is Celd water 20C Hot glycol 250W/m2.°C. Determine: 15kg/s (a) The rate of heat transfer. (b) The mass flow rate of water. (c) The heat transfer surface area on the inner side of the tube. Q3) A(10 m) long section of a 0.05m diameter horizontal hot water pipe passes

Q2) A double-pipe counter flow heat exchanger is to coo! ethylene glycol (Cp-2560J/kg.°C) flowing at a rate of 3.5 kg/s from 80°C to 40 C by water (Cp-4180J/kg.°C) that enters at 20°C and leaves at 55°C. The overall heat transfer coefficient based on the inner surface area of the tube is Celd water 20C Hot glycol 250W/m2.°C. Determine: 15kg/s (a) The rate of heat transfer. (b) The mass flow rate of water. (c) The heat transfer surface area on the inner side of the tube. Q3) A(10 m) long section of a 0.05m diameter horizontal hot water pipe passes

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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are maintained at uniform temperatures of 300°C and 4 cm Tem 5 cm 10cm hem 100°C,respectively. Determine the rate of heat transfer through the wall and draw the thermal circuit. Q2) A double-pipe counter flow heat exchanger is to coo! ethylene glycol (Cp-2560J/kg.°C) flowing at a rate of 3.5 kg/s from 80°C to 40C by water (Cp-4180J/kg.°C) that enters at 20°C and leaves at 55°C. The overall heat transfer coefficient based on the inner surface area of the tube is Celd water 20C Hot glycel 250W/m2.°C. Determine: 15gs (a) The rate of heat transfer. (b) The mass flow rate of water. (c) The heat transfer surface area on the inner side of the tube. Q3) A(10 m) long section of a 0.05m diameter horizontal hot water pipe passes through a large room whose temperature is 22°C. If the temperature of the outer surface of the pipe is 65°C, determine the rate of heat loss from the pipe by natural convection? The properties of air at 43.5°C is k = 0.02688 W/m.°C, u = 1.735 10 m /s, Pr = 0.7245. Empirical correlation for
Transcribed Image Text:are maintained at uniform temperatures of 300°C and 4 cm Tem 5 cm 10cm hem 100°C,respectively. Determine the rate of heat transfer through the wall and draw the thermal circuit. Q2) A double-pipe counter flow heat exchanger is to coo! ethylene glycol (Cp-2560J/kg.°C) flowing at a rate of 3.5 kg/s from 80°C to 40C by water (Cp-4180J/kg.°C) that enters at 20°C and leaves at 55°C. The overall heat transfer coefficient based on the inner surface area of the tube is Celd water 20C Hot glycel 250W/m2.°C. Determine: 15gs (a) The rate of heat transfer. (b) The mass flow rate of water. (c) The heat transfer surface area on the inner side of the tube. Q3) A(10 m) long section of a 0.05m diameter horizontal hot water pipe passes through a large room whose temperature is 22°C. If the temperature of the outer surface of the pipe is 65°C, determine the rate of heat loss from the pipe by natural convection? The properties of air at 43.5°C is k = 0.02688 W/m.°C, u = 1.735 10 m /s, Pr = 0.7245. Empirical correlation for
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