A single-effect evaporator is being used to concentrate 10,000 kg/h of tomato juice from 5% total solids to 30% total solids. The juice enters the evaporator at 15°C. The evaporator is operated with steam (80% quality) at 143.27 kPa. The vacuum inside the evaporator allows the juice to boil at 75°C. Calculate (a) the steam requirements and (b) steam economy for the process

A single effect evaporator was used to concentrate 8000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the evaporator at 15 ° Celsius. The evaporator was operated by steam (80% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° Celsius. the specific heat of the Ecer material is 4.1 KJ / (kg degrees Celsius) and the concentrate product is 3.1 KJ / (kg degrees Celsius). Count it a. Steam demand rate = b. Steam economy if Condensate temperature is released at 75 ° Celsius =

A single effect evaporator is used to concentrate 10 000 kg / hour of tomato juice from 5% total solids to 30% total solids. The juice enters the evaporator at 15 ° C. The evaporator is operated on Steam (85% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it (a) Rate of demand for steam =     kg / hour. b. Steam economy if condensate temperature is released at 75 ° C =    (kg water evaporated / kg steam)

A fully charged battery contains 0.02 kmol Ag₂O (silver oxide) and 0.02 kmol Zn (zinc). The battery is initially at a temperature of 21°C. The fully charged battery is then discharged for half an hour under adiabatic conditions (no heat leaves the system). During the half hour of being discharged, the electric current from the battery does 200 kJ of work external to the battery system (none of this external work heats the battery). During this half hour, 0.001 kmol of both reactants are consumed in the net cell discharge reaction: Please see the following table for heat capacities and heats of formation. The heats of formation below show the amount of energy (kJ) needed to form one kmole of each component. If the heat of formation is negative, then forming that species releases energy (to do work or provide heat). Therefore, to create one kmole of silver oxide 29000 kJ energy is released and is generated in the battery (for work or heat), and if one kmole of silver oxide decomposes…

Heating Air by Condensing Steam. Air is flowing through a tube having an inside di- ameter of 38.1 mm at a velocity of 6.71 m/s, average temperature of 449.9 K, and pres- sure of 138 kPa. The inside wall temperature is held constant at 204.4°C (477.6 steam condensing outside the tube wall. Calculate the heat-transfer coefficient for a long tube and the heat-transfer flux. K) by Ans. h = 39.38 W/m² K (6.94 btu/h. ft².°F)

NEED IT UNTIL 5:15PM Estimate the convective heat-transfer coefficient for natural convection from a horizontalsteam pipe. The outside surface temperature of the insulated pipe is 80°C. Thesurrounding air temperature is 25°C. The outside diameter of the insulated pipe is 10 cm. please help me if my answer is wrong.

A countercurrent tunnel dryer is used to dry apple slices from an initial moisture content of 65% to 5% (wet basis). Hot air enters at 95 ° C with 1% RH, and exits at 52.0 ° C. If the product temperature along the dryer is 20 ° C and the solid specific heat of the product is 2.2 kJ / (kg ° C), determine the rate of hot air required to dry the wet product at a rate of 200 kg / hr. Determine the RH of the dryer exhaust air. a. Drying air rate (ma) = kg / hr. b. RH of dryer exhaust air =%

Calculate the heat duty (Q) required to raise the temperature of 500 kg of water from 25°C to 80°C. The specific heat capacity of water (c) is 4.18 kJ/kg°C.

A single effect evaporator was used to concentrate 8000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the Evaporator at 20 ° C. The evaporator is operated on Steam (85% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it (a) Steam demand rate = Answerkg / hour. b. Steam economy when condensate temperature is released at 75 ° C. = Answer(kg of water evaporated / kg of steam)

A single effect evaporator is used to concentrate 10 000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the Evaporator at 20 ° C. The evaporator is operated on Steam (80% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it (a) Steam demand rate = Answer kg / hour. b. Steam economy when condensate temperature is released at 75 ° C. = Answer (kg of water evaporated / kg of steam)