A feed of 4535 kg/h of a 2% salt solution at 311 k enters continuously a single effect evaporator and is being concentrated to 3%. The evaporation is at atmospheric pressure and the area of the evaporator is 69.7 m2. Saturated steam at 383.2 K is supplied for heating. Since the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as Cp = 4.10 Kj/kg – K. Calculate the over – all heat transfer coefficient.

How much much heat must be supplied to water at 180 degrees celcius to make 1 kg of wet steam at 9000 kpa , having a dryness fraction of 80% ? .

the dryness fraction of a sample of wet steam measured by a combined separating and throttling calorimeter is 0.9. The quality of steam after partial seperation is 0.28 kg of moisture in the separator increases to 0.95. calculate the total mass of the wet steam sample.

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Hot air at 40 ° C and RH 65% is heated using a heat exchanger to reach 90 ° C. Using a psychrometric chart, determine:a) the amount of heat added per 2 m³ of initial air = ... (kJ) b) condensation temperature = ... (° C)

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Steam (80% quality) is used to heat tomato pulp (40% solids content) which flows at a rate of 400 kg / hr through an injection steam heater. The steam is pressurized to 169.06 kPa and flows to the heater at a rate of 45 kg / hr. If the specific heat of the product is 3.2 kJ / (kg K), determine the total solids content of the product after heating and the temperature of the product leaving the heater when the initial temperature is 50 ° C. Assume the specific heat of the product after heating is 3.5 kJ / (kg K) (Use the approach as in Example 3.5 of Singh's book). a. Total solids content of the product = Answer %. b. The temperature of the product that comes out of the heater = Answer ° C.