Engineering, 09.10.2019 16:10 eddrekas8564
Asquare rod of cross-section ac=w2 is attached between two heat reservoirs, maintained at the same temperature tb. the rod loses heat by convection to the air at t[infinity]. the following is given: w = 1 cm, 2l = 20cm, k = 10 w/(m-k), h = 25 w/(m2-k), tb=100°c, and t[infinity] = 20°c. (a) determine the temperature at x = l/2 and at x = l using an exact analysis. the following two options are acceptable: 1) derive the required governing equation using a differential energy balance and find the temperature profiles, and 2) use the proper temperature profile formula from your textbook. (b) determine the total heat transfer from the bar into the environment. (c) the rod under consideration is not a fin per se, but can be analyzed as a fin, what is the efficiency of this fin?
Answers: 1
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Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
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Asquare rod of cross-section ac=w2 is attached between two heat reservoirs, maintained at the same t...
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