Hot water at an average temperature of 70°C is flowing over a 15-m section of a cast iron pipe (k = 52 W/m·K) whose inner and outer diameters are 4 cm and 4.6 cm, respectively. The inner surface of the pipe exchanges heat by convection and radiation to the cold air at 10°C inside the pipe, with a convective heat transfer coefficient of 15 W/m2·K and heat transfer coefficient for radiation is 6.157 W/m2·K. The heat transfer coefficient at the outer surface of the pipe in the hot water side is 120 W/m2·K, Draw the thermal resistance network and determine the rate of heat loss from the hot water.
Hot water at an average temperature of 70°C is flowing over a 15-m section of a cast iron pipe (k = 52 W/m·K) whose inner and outer diameters are 4 cm and 4.6 cm, respectively. The inner surface of the pipe exchanges heat by convection and radiation to the cold air at 10°C inside the pipe, with a convective heat transfer coefficient of 15 W/m2·K and heat transfer coefficient for radiation is 6.157 W/m2·K. The heat transfer coefficient at the outer surface of the pipe in the hot water side is 120 W/m2·K, Draw the thermal resistance network and determine the rate of heat loss from the hot water.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Hot water at an average temperature of 70°C is flowing over a 15-m section of a cast iron pipe (k = 52 W/m·K) whose inner and outer diameters are 4 cm and 4.6 cm, respectively. The inner surface of the pipe exchanges heat by convection and radiation to the cold air at 10°C inside the pipe, with a convective heat transfer coefficient of 15 W/m2·K and heat transfer coefficient for radiation is 6.157 W/m2·K. The heat transfer coefficient at the outer surface of the pipe in the hot water side is 120 W/m2·K, Draw the thermal resistance network and determine the rate of heat loss from the hot water.
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