Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
Hot water at 50 °C is routed from one building in which it is generated to an adjoining building in 2. which it is used for space heating. Transfer between the buildings occurs in a steel pipe (k 60 w/m.K) of 100-mm outside diameter and 8-mm wall thickness. During the winter, representative environmental conditions involve air at T.. = -5 °C and h 20 w/m2K in cross flow over the pipe. If the cost of producing the hot water is $0.05 per kwh, what is the representative daily a) cost of energy loss from an uninsulated pipe to the air per meter of pipe length? b) Determine the savings associated with application of a 10-mm-thick coating of urethane insulation (k 0.026 W/m. K) to the outer surface of the pipe.

Hot water at 50 °C is routed from one building in which it is generated to an adjoining building in 2. which it is used for space heating. Transfer between the buildings occurs in a steel pipe (k 60 w/m.K) of 100-mm outside diameter and 8-mm wall thickness. During the winter, representative environmental conditions involve air at T.. = -5 °C and h 20 w/m2K in cross flow over the pipe. If the cost of producing the hot water is $0.05 per kwh, what is the representative daily a) cost of energy loss from an uninsulated pipe to the air per meter of pipe length? b) Determine the savings associated with application of a 10-mm-thick coating of urethane insulation (k 0.026 W/m. K) to the outer surface of the pipe.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter6: Forced Convection Over Exterior Surfaces
Section: Chapter Questions
Problem 6.1P: 6.1 Determine the heat transfer coefficient at the stagnation point and the average value of the...
See similar textbooks
icon
Related questions
Question
Hot water at 50 °C is routed from one building in which it is generated to an adjoining building in 2. which it is used for space heating. Transfer between the buildings occurs in a steel pipe (k 60 w/m.K) of 100-mm outside diameter and 8-mm wall thickness. During the winter, representative environmental conditions involve air at T.. = -5 °C and h 20 w/m2K in cross flow over the pipe. If the cost of producing the hot water is $0.05 per kwh, what is the representative daily a) cost of energy loss from an uninsulated pipe to the air per meter of pipe length? b) Determine the savings associated with application of a 10-mm-thick coating of urethane insulation (k 0.026 W/m. K) to the outer surface of the pipe.
Transcribed Image Text:Hot water at 50 °C is routed from one building in which it is generated to an adjoining building in 2. which it is used for space heating. Transfer between the buildings occurs in a steel pipe (k 60 w/m.K) of 100-mm outside diameter and 8-mm wall thickness. During the winter, representative environmental conditions involve air at T.. = -5 °C and h 20 w/m2K in cross flow over the pipe. If the cost of producing the hot water is $0.05 per kwh, what is the representative daily a) cost of energy loss from an uninsulated pipe to the air per meter of pipe length? b) Determine the savings associated with application of a 10-mm-thick coating of urethane insulation (k 0.026 W/m. K) to the outer surface of the pipe.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 8 steps with 7 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer