An evaporator concentrates the F kg / h feed containing 20 wt% NaOH at 311 K to the product containing 50 wt% NaOH. The temperature of the saturated water vapor used for heating is 399.3 K. Absolute pressure in the separator part of the evaporator is 13.3 kPa. The overall heat transfer coefficient is 1420 W / m2.K and the area is 86.4 m2. Calculate the feed rate F to the evaporator.

Q: Air at dry ball temperature 90 ° C and RH 8% is passed over the cooling coil so that the air dry…

A: Given that, Initial dry bulb temperature T1 = 90oC Initial Relative humidity RH = 8% Dry bulb…

Q: In distillation of kerosene, a steel pipeline (k = 47 W/m.°C) with inside surface temperature of…

A: Given that, The inside surface temperature of steel pipe T1 = 250oC  Inside diameter D1 = 8 cm =…

Q: 0.3 kg of gas is cooled from 1200C to 50°C at constant volume in a closed system. Calculate the heat…

A:

Q: piece of beef steak 7 cm thick will be frozen in the freezer room -35 ° C. This product has a…

A:

Q: The exterior wall of an industrial furnace should be covered with a 2-inch-thick thermal insulation…

A: Heat is transferred from a high temperature system to low temperature system. The main driving force…

Q: Choose the correct option: 10. What is the main characteristic of multiple effect evaporators? a)…

A: in multiple effect evaporators 2 or more evaporators are put in series in such a way that steam…

Q: A flow of 0.35 kg/s of a solid is to be dried from 15 per cent to 0.5 per cent moisture on a dry…

A:

Q: A wall of a house is made of 0.2 m layer of brick followed by 0.05 m of plaster. Calculate the…

A: Given data: Thickness of layer of brick = 0.2 m Thickness of plaster layer = 0.05 m Thermal…

Q: 10 cm thick beef steak will be frozen in the freezer room -25 degrees Celsius. This product has a…

A:

Q: The compression ratio of an air-standard dual cycle is 12, and the pressure at the beginning of…

A:

Q: Air at a dry ball temperature of 85° C and 5% RH is passed over the cooling coil so that the air dry…

A: Given Data: Dry bulb temperature TDB1 = 85 °C Relative Humidity RH% = 5% Dry bulb temperature TDB2 =…

Q: A composite wall is formed of a 2.5-cm copper plate, a 3.2-mm layer of asbestos, and a 5-cm layer of…

A: Composite wall dimensions are as follows,Thickness of copper plate = 2.5 cm, Thickness of asbestos =…

Q: Calculate AS when two iron blocks, each of mass 1.00 kg, one at 200 K and the other at 25 K, are…

A: Mass of each block = 1.00 Kg Temperature of one block = 200 K temperature of other block = 25 K…

Q: A dairy product having a moisture content of 75% is to be frozen in a blast freezer where convective…

A: The freezing time of a food product can be estimated using two methods, pham's method and planck's…

Q: A 7 cm-thick beef steak is being frozen in a -40°C room. The product has 73% moisture content,…

A: Freezing time using plank's constant is given by; tF={ρF Lf/TF-Ta} {[P' a/h] + [ R' a2/k]}where; ρF…

Q: A piece of beef steak 5 cm thick will be frozen in the freezer room -30 ° C. This product has a…

A: Given data: Operating temperature freezer room = –30 0C Thickness of beef steak = 5 cm Density of…

Q: 5. thick-walled tube of aluminum (k = 237 W/m °C) with 0.2m inner d 0.3m outer diameter (OD) is…

A:

Q: 2. A piece of beef steak 10 cm thick will be frozen in the freezer room -25 ° C. This product has a…

A: Thickness of the food product,a=10 cm=10100 m=0.1 m  Freezer temperature, Ta =-25°C=(273-25) K=248 K…

Q: A rectangular block of material 4 (k, -24 W/m °C), 0.1 m thick, is sandwiched between two walls of…

A:

Q: A large plate of aluminum alloy 2024-t6 5.0 cm thick at a temperature of 250°C is exposed to a…

A: The characteristic length is obtained from the ratio of volume and area. The length is obtained in…

Q: (a) Assume that there is a negligible thermal gradient in the wall of the container (dT/dr is…

A: Consider a spherical conatiner is used to store reacting chemicals, whichresults in a uniform heat…

Q: A radiant-heating system is installed in the plaster ceiling of a room 36 ft long by 18 ft wide by 9…

A: Given dimension of ceiling room is 36ft long, 18 ft wide and 9ft high. Temperature of concrete floor…

Q: 2. Determine the heat necessary to obtain 65% vaporization in the intake manifold for an outside…

A: Given : Vaporization percentage Outside temperature Pressure

Q: A drying gas in cross-flow enters at one end of a stack of trays at 90°C and leaves at 70°C. The…

A: Given that, The inlet temperature of drying gas Th,1 = 90oC The exit temperature of drying gas Th,2…

Q: air at dry ball temperature 90 ° C and RH 8% is passed over the cooling coil so that the air dry…

A: Given that, Initial dry bulb temperature T1 = 90oC Initial Relative humidity RH = 8% Dry bulb…

Q: Calculate the heat transfer rate per unit area of ​​a concrete wall with a thickness of 400 mm at a…

A:

Q: Problem 1. A copper slab of thickness 2mm is coated with lead of thickness 1mm on one side. Lead…

A:

Q: It is desired to raise the temperature of a given gas in a container as much as possible with the…

A: A thermodynamic system is a body of matter and/or radiation, confined in space by walls, with…

Q: From the figure below, determine the total rate of heat transfer, q, in BTU per hour. The values of…

A:

Q: Problem 4. A mixture of copper (A) and calcite (B) solid particles are separated by hydraulic…

A: Assumption: Stoke's law is valid i.e. Flow is laminar and Re < 1; Given:              ρA = 555.6…

Q: 15 cm diameter with a density of 6000kg / m3 and specific heat of 600J / kg. ° C A stainless steel…

A: Given, Initial temperature of stainless steel ball, T0,b = 350 °C Final temperature of the ball,…

Q: in the manufacture of pulp from the delignification process using an operating temperature of 100C.…

A: Delignification is the system of extracting lignin from plant sources, can be carried out the usage…

Q: A semi-infinite solid is initially at a temperature of 0°C. The surface is suddenly exposed to the…

A: Initial temperature of the solid, T0 = 0ºC Temperature of the solid at depth x, Tx = 2ºC Surrounding…

Distillation

Distillation is a process/technique to separate more volatile components from less volatile components using the principle of relative volatility. In chemical engineering, distillation is one of the most common and important topics that is involved in almost every industry and process.