Engineering, 19.12.2019 07:31 karen7088
(a) calculate the heat flux through a sheet of steel 10 mm (0.39 in.) thick if the temperatures at the two faces are 300°c and 100°c (572°f and 212°f); assume steady-state heat flow.
(b) what is the heat loss per hour if the area of the sheet is 0.25 m2 (2.7 ft2 )?
(c) what will be the heat loss per hour if soda–lime glass instead of steel is used?
(d) calculate the heat loss per hour if steel is used and the thickness is increased to 20 mm (0.79
Answers: 3
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Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.
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Engineering, 04.07.2019 18:20
Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
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Engineering, 04.07.2019 19:20
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(a) calculate the heat flux through a sheet of steel 10 mm (0.39 in.) thick if the temperatures at t...
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