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A cooling pipe with length of 0.55 m and inner diameter of 38.1 mm is constructed to coo ammonia gas flowing at 1.8 bar and 452 K. The inner surface wall temperature of the pipe in contact with the gas is 406 K. Additional information: Properties of ammonia gas at 1.8 bar and 452 K Uz = 16 × 10° Pa-s, p=0.8216 kg/m², k=0.04471 W/m-K, Cp = 2391 J/kg·K Properties of ammonia gas at 1.8 bar and 406 K flw = 14.2 × 106 Pa-s

A cooling pipe with length of 0.55 m and inner diameter of 38.1 mm is constructed to coo ammonia gas flowing at 1.8 bar and 452 K. The inner surface wall temperature of the pipe in contact with the gas is 406 K. Additional information: Properties of ammonia gas at 1.8 bar and 452 K Uz = 16 × 10° Pa-s, p=0.8216 kg/m², k=0.04471 W/m-K, Cp = 2391 J/kg·K Properties of ammonia gas at 1.8 bar and 406 K flw = 14.2 × 106 Pa-s

Elements Of Electromagnetics
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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a)Identifythe maximum velocitylimitof ammonia gas in the pipe if the flow is to be maintained as laminar flow.

b)If the actual velocity of ammonia gas is 0.9 times the maximum velocitylimit, calculatethe heat transfer coefficient and heat transfer flux if the heat transfer area is 0.16m^2.

c)Suppose the pipe has an outer diameter of 43.1 mm and the outer surface wall temperature of the pipe is 356 K, determinethe thermal resistance and thermal conductivity of the pipe.

A cooling pipe with length of 0.55 m and inner diameter of 38.1 mm is constructed to cool ammonia gas flowing at 1.8 bar and 452 K. The inner surface wall temperature of the pipe in contact with the gas is 406 K. Additional information: Properties of ammonia gas at 1.8 bar and 452 K Uz = 16 × 10° Pa-s, p=0.8216 kg/m², k=0.04471 W/m-K, Cp = 2391 J/kg·K Properties of ammonia gas at 1.8 bar and 406 K Hw = 14.2 × 10 Pa-s
Transcribed Image Text:A cooling pipe with length of 0.55 m and inner diameter of 38.1 mm is constructed to cool ammonia gas flowing at 1.8 bar and 452 K. The inner surface wall temperature of the pipe in contact with the gas is 406 K. Additional information: Properties of ammonia gas at 1.8 bar and 452 K Uz = 16 × 10° Pa-s, p=0.8216 kg/m², k=0.04471 W/m-K, Cp = 2391 J/kg·K Properties of ammonia gas at 1.8 bar and 406 K Hw = 14.2 × 10 Pa-s
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