A raw juice is subject to flash distillation. The juice is heated in a heat exchanger...
A raw juice is subject to flash distillation. The juice is heated in a heat exchanger and then flashes in a vacuum vessel. There is no phase change in heat exchanger. If heat at a rate of 270,000 kJ/h is transferred to the heat exchanger,
calculate:
a). The temperature of the juice at the exit of the heat exchanger
b). The amount of overhead/flashed vapor and finished juice leaving the vacuum vessel
The following data are given: flow rate and temperature of the solution at the inlet of the heat exchanger is 1000 kg/h and 50oC, specific heat capacity of the solution is 3.8 kJ/kg oC, and the absolute pressure in the vacuum vessel is 70.14 KPa.
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A raw juice is subject to flash distillation. The juice is
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Help me!!!! Q2. Heat exchanger-NTU method (34 pt). An orange juice is being cooled from 85...
Help me!!!!
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Figure P2.32 shows a cross-flow heat exchanger used to condense Freon-12. Freon-12 vapor enters the unit...
Figure P2.32 shows a cross-flow heat exchanger used to condense
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kg/s. Freon-12 leaves the exchanger as a liquid (Sp. Gr. = 1.915)
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vapor inlet fins 1/4 in. ID tubing liquid outlet FIGURE P2.32.
3/ A LiBr-H2O absorption cooling system contains of one solution heat exchanger, generator, condense an evaporator, and an absorber. The temperatures of the main components °C at condenser, 10 °C at evaporator, and 30 °C at absorber. The cooling capacity at the evaporator is are 100 °C at generator, 40 100 Ton, and the flow rate of the pump is 34.2 kg/min. And the temperature at outlet of heat exchanger and the inlet to the generator is 52 °C Find...
Help me!!!!
Q2. Heat exchanger-NTU method (34 pt). An orange juice is being cooled from 85 °C at a rate of 2000 kg/h in a counter-current heat exchanger by cold water. The juice has a specific heat of 3090 J/(kg.K). The cold water enters the heat exchanger at 8°C at a rate of 2950 kg/h、The overall heat transfer coefficient U-485 w/mK and the area A 4.2 m2. Assuming steady-state conditions, calculate: (a) the heat transfer rate (J/s), (b) the exit...
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Question 1 Calculate the heat exchange surface area required in a heat exchanger comprised of tubes with an external diameter of 25 mm in order to cool a solution of ethyl alcohol (mass flow rate kg/h, heat capacity: 3.8 kJ/kg K) from 65 C to 40 °C using a water flow (mass flow rate: 22,680 kg/h, 24,948 , heat capacity: 4.18 kJ/kg K) entering at 5 °C. The overall heat transfer coefficient related to the outside tube surface is 566...
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Figure P2.32 shows a cross-flow heat exchanger used to condense
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kg/s. Freon-12 leaves the exchanger as a liquid (Sp. Gr. = 1.915)
at room temperature and pressure. Determine the exit velocity of
the liquid.
vapor inlet fins 1/4 in. ID tubing liquid outlet FIGURE P2.32.
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