Engineering, 22.06.2020 20:57 KaseyT
Consider high, long, and thick wall whose cross section is given in
figure. Thermal conductivities of various materials used, in , are
, , , , and . The left surface of wall is maintained at
and right surface of wall is subjected to convection with outdoor temperature
and . Assuming heat transfer through wall is one-
dimensional, determine (a) heat transfer rate through wall; (b) temperature at point
where sections , , and meet; and (c) temperature drop across section ; d) right
wall surface temperature. Disregard any contact resistances at interfaces.
Answers: 3
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An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
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Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
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For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
Answers: 3
Consider high, long, and thick wall whose cross section is given in
figure. Thermal conductivities...
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