Physics, 12.02.2020 03:33, maiahfogel1351
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=10W/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: 3
Physics, 20.06.2019 18:02, khikhi1705
Asmall aircraft, on a heading of 225°, is cruising at 150 km/h. it is encountering a wind blowing from a bearing of 315° at 35 km/h. determine the aircraft’s ground velocity.
Answers: 3
Physics, 22.06.2019 12:00, Sariyahhall1
Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation
Answers: 1
An overhead 25-m-long, uninsulated industrial steam pipe of 100-mm diameter is routed through a buil...
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