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An oil cooler is used to cool lubrication oil from 70*C to 40* C. The colling water enters the exchanger at 15*C and leaves at 25* C. The specific heat capacities of the oil and water are 2 and 4.2 kJ/kgxK, respectively, and the oil flow rate is 4 kg/s.
a. Calocualte the water flow rate required.
B. Calculate the true mean temperature difference for two-shell-pass-and-four-tube passes and one-shell-pass-and-two-tube passes shell-and-tub heat exchangers and an unmixed-un-mixed crossflow configurationk, respectively.
c. find the effectiveness of the heat exchangers.
a storage tank holds 75 cubic meters of a gas at 28deg c and a pressure of 130kpa. the gas appears to have a molecular
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refrigerant-134a at 800 kpa and 25 degree c is throttled to a temperature of -20 degree c. determine the pressure and
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It is necessary to design a square-section composite bar that will withstand an applied load without deflecting more than a specified amount.The design specification for the bar, including its dimensions and loading criteria, is given below.
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Block B of the mechanism is confined to move within the slot member CD. If AB is rotating at a constant rate of AB = 3rad/s, determine the angular velocity and angular acceleration of member CD at the instant shown.
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