Engineering, 16.10.2020 08:01, masonorourke
Superheated steam at an average temperature of 140°C is transported through a steel pipe (k = 50 W/m·K, Do = 8.0 cm, Di = 6.0 cm, and L = 20.0 m). The pipe is insulated with a 4-cm-thick layer of gypsum plaster (k = 0.5 W/m·K). The insulated pipe is placed horizontally inside a warehouse where the average air temperature is 10°C. The steam and the air heat transfer coefficients are estimated to be 800 and 200 W/m2·K, respectively. Calculate (a) the daily rate of heat transfer from the superheated steam, and (b) the temperature on the outside surface of the gypsum plaster insulation.
Answers: 3
Engineering, 04.07.2019 18:10, winterblanco
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
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Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
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Engineering, 04.07.2019 19:20, diawia
Air at a pressure of 1atm and a temperature of 40 c is in parallel flow over the top surface of a flat plate that is heated to a uniform temperature of 120 c. the plate has a length of 0.40m (in the flow direction) and a width of 0.15m. the reynolds number based on the plate length is 50, 000. what is the rate of heat transfer from the plate to the air? if the free stream velocity of the air is doubled and the pressure is increased to 10 atm what is the rate of heat transfer?
Answers: 2
Superheated steam at an average temperature of 140°C is transported through a steel pipe (k = 50 W/m...
Mathematics, 02.07.2020 23:01
Mathematics, 02.07.2020 23:01
Mathematics, 02.07.2020 23:01
Mathematics, 02.07.2020 23:01
Mathematics, 02.07.2020 23:01
Mathematics, 02.07.2020 23:01