Determine the amount of steam to be consumed, the economy, and the heating area required, for the production of 10,000 Ib/hr of 50 % NaOH solution from 10 % NaOH feed entering at 100 °F. Evaporation is to be carried out in a single body, standard evaporator for which an over-all coefficient of 500 Btu/hr sq. ft. °F is expected. Saturated steam is available at 50 psig and the evaporator can be operated at 10 psi vacuum relative to a barometric pressure of 14.7 psia.

plz write neatly, do not copy and paste solution

Q2

Question is from the class of Heat Transfer please show all steps, Thank you.

Please no hand writing solution for other wise down vote

er%20Fundamentals%20and%20Applications... Q and 1100 W/m².K, respectively. The heat exchanger has a heat transfer surface area of 2.5 m², and the estimated fouling factor caused by the accumulation of deposit on the surface is 0.0002 m² K/W. The hot fluid (c, = 3800J/kg-K) enters the heat exchanger at 200°C with a flow rate of 0.4 kg/s. In the cold side, cooling fluid (c = 4200 J/kg-K)enters the heat exchanger at 10°C with a mass flow rate of 0.5 kg/s. S e of 10 nd is er- ra- ate un- an ater the for cold heat mine erall 11-104 Cold water (c₂=4180 J/kg-K) leading to a shower enters a thin-walled double-pipe counterflow heat exchanger at 15°C at a rate of 0.25 kg/s and is heated to 45°C by hot water (cp=4190 J/kg-K) that enters at 100°C at a rate of 3 kg/s. If the overall heat transfer coefficient is 950 W/m2.K, determine the rate of heat transfer and the heat transfer surface area of the heat exchanger using the e-NTU method. Answers: 31.35 kW, 0.482 m² Hot water A 100°C 3 kg/s 45°C…

The air at 20 ° C and 60% RH is heated using a heat exchanger to reach 70 ° C. Using a psychrometric chart, determine a. The amount of heat added per 1 m³ of initial air = (kJ). b. Condensation temperature = (° C)

Condensation of Steam on Vertical Tubes. Steam at 1 atm pressure abs and 100°C is condensing on a bank of five vertical tubes each 0.305 m high and having an OD of 25.4 mm. The tubes are arranged in a bundle spaced far enough apart so that they do not interfere with each other. The surface temper- ature of the tubes is 97.78°C. Calculate the average heat-transfer coefficient and the total kg condensate per hour. Ans. h = 15 240 W/m².K

In a liquid formulation process, several ingredients are mixed into purified water. The mixing action creates an exothermic of 40,000 Btu/hr. Assume the heat capacity of the solution is approximate of water. The chill water applied to the jacket of the compounding tank enters at 42 deg F and exits at 50 deg F. The chill water GPM is

4. The right figure shows a simple combustion calorimeter. The sample is ignited electrically. After a few minutes the temperature of the water and calorimeter is constant at AT higher than the starting temperature. Determine the heat of combustion of a sample from the following data: Sample mass Calorimeter mass Water mass 4 g 500 g 5000 g The heat of combustion is defined as = Sample Inlet 0 75 400 Temperature °F 70.0 Cvcalorimeter Cywater Ufinal products of combustion Pressure, psig Elevation, ft Velocity, ft/s AT Stirrer Uinitial fuel+oxygen Au combustion msample 5. A steady-flow water power plant has the following inlet and outlet conditions: Oxygen Outet 0 0 50 70.1 Water Thermometer Heavy steel bomb 0.12 cal/g °C 1.0 cal/g °C 5 °C