Physics, 14.10.2019 22:00 mbrisen7420
The heat loss from a boiler is to be held at a maximum of 900btu/h ft2 of wall area. what thickness of asbestos (k= 0.10 btu/h ft ℉) is required if the inner and outer surfaces of the insulation are to be 1600 and 500℉, respectively? now if a 3-in.-thick layer of kaolin brick (k= 0.07 btu/h ft ℉) is added to the outside of the asbestos, what heat flux will be result if the outside surface of the kaolin is 250℉? what will be the temperature at the interface between the asbestos and kaolin for this condition?
Answers: 2
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Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)
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How long will it take a car traveling of a constant speed of 45m/s to cover the distance of a 2.5km?
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The heat loss from a boiler is to be held at a maximum of 900btu/h ft2 of wall area. what thickness...
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