Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 29 Sep 2017 My Price 3.00

uninsulated industrial steam pipe


An overhead 25-m-long, uninsulated industrial steam pipe of 100-mm diameter is routed through a building whose walls and air are at 25°C. Pressurized steam maintains a pipe surface temperature of 150 C, and the coefficient associated with natural convection is h  10 W/m2 ∙ K. The surface emissivity is ε = 0.8.

 

(a) What is the rate of heat loss from the steam line?

(b) If the steam is generated in a gas-fired boiler operating at an efficiency of ηf = 0.90 and natural gas is priced at Cg = $0.02 per MJ, what is the annual cost of heat loss from the line?

Answers

Maurice Tutor
(5)
Status NEW Posted 29 Sep 2017 11:09 PM My Price 3.00

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