Saturated steam at a to heat a stream of ethone. The ethane enters a heat exchanyer at gauge pressure of 0.50 bar is used 162 and 1.5 bar gange pressure at a rate of 795 m/min and is hauted at Camstant pressure to 93%. The steom condenses and leaves the exchonger os a liguid at 20°C. The specitic enthaley of ethane t the siven prossure is 941 K5/Ks at 16°C and 1073 KT/k4 at 93%. a) How much power must be transfered to the ethere to heat it from 6C to 93°C? 5) At what rate must steam be suppled to the heat enchanger if al the energy transfernd from the steum ges to heat the ethane?

Number 1A food product containing 82% moisture content is being frozen. Estimate the specific heat of the product at -8°C when 82% of the water is frozen. The specific heat of the dry product is 2,5 kJ/(kg°C). It is assumed that the specific heat of water at -10°C is the same as the specific heat of water at 0°C, and that the specific heat of ice follows the function Cp es = 0.0062 Tbeku + 2.0649. identify :a. Cp frozen product = Answer in kJ/kg°C

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A fruit juice at 20°C with 5% total solids is being concentratedin a single-effect evaporator. The evaporator is being operatedat a suffi cient vacuum to allow the product moisture to evaporate at 80°C, and steam with 85% quality is being supplied at 169.06 kPa. The desired concentration of thefi nal product is 40% total solids. The concentrated productexits the evaporator at a rate of 3000kg/h. Calculate the(a) steam requirements and (b) steam economy for theprocess, when condensate is released at 90°C. The specifi cheat of liquid feed is 4.05kJ/(kg°C), and of concentratedproduct is 3.175kJ/(kg°C).   A single-effect evaporator is being used to concentrate10,000 kg/h of tomato juice from 5% total solids to 30% totalsolids. The juice enters the evaporator at 15°C. The evaporatoris operated with steam (80% quality) at 143.27 kPa. Thevacuum inside the evaporator allows the juice to boil at 75°C.Calculate (a) the steam requirements and (b) steam economyfor the process. Assume the…

43. A liquid is observed to boil at 120°C under a pressure of 725 mm. Its molar heat of vaporization is 8200 cal/mole. Calculate the normal boiling point of the liquid.

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Estimate the heat rate that must be supplied to vaporize 100 moles per hour of n-hexane at 25°C and 7 bar to 300°C at constant pressure.