Engineering, 07.10.2019 19:00 cyndalulu6729
A30-cm-diameter, 4.8-m-high cylindrical column of a house made of concrete (k = 0.79 w/m·k, α = 5.94 × 10−7 m2/s, rho = 1600 kg/m3, and cp = 0.84 kj/kg·k) cooled to 14°c during a cold night is heated again during the day by being exposed to ambient air at an average temperature of 28°c with an average heat transfer coefficient of 14 w/m2·k. use analytical one-term approximation method (not the heisler charts). determine how long it will take for the column surface temperature to rise to 25°c. the time taken for the column surface temperature to rise to 25°c is
Answers: 2
Engineering, 04.07.2019 18:10, hadellolo8839
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10, salazjlove
Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation
Answers: 1
A30-cm-diameter, 4.8-m-high cylindrical column of a house made of concrete (k = 0.79 w/m·k, α = 5.94...
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