Question 3 A cooling tower is designed to cool 340 kg of water per minute. The water is supplied at 42°C and it is sprayed down into the column of air which enters the bottom of the tower at a rate of 540 kg/min with a temperature of 18°C and relative humidity of 60%. The moist air leaves the top of the tower saturated at 27°C. The whole process occurs at a constant pressure of 1.013 bar. 3.1 Give three reasons for water loss in cooling towers, and determine the temperature of the water leaving the tower, and the flow rate of make-up water required to replace the evaporated. 3.2 3.3

Evaporator, single effect is used to upgrade the concentrate 8000 kg/h of tomato juice than 5% solids the total to 30% solids total. Juice enters the Evaporator at 15 °C. The Evaporator is operated with Steam (quality 80%) in 143.27 kPa. The condition of vacuum in the Evaporator allow the juice to a boil on the 75 °C. The hot kind of material dilute is 4.1 kJ/(kg °C) and the product the concentrate is a 3.1 kJ/(kg °C). Count (a) the Rate of the needs of steam = kg/h. b. The economic steam if the temperature is condensate is released at 75 °C. = (kg water evaporated/kg of steam) Help me :-(

What is the equivalent evaporation of the boiler? Determine the specific heat capacity of the delivered steam

The air has a dry ball temperature of 40 ℃ and a wet bulb temperature of 26 ℃ initially heated in the heater so that the dry ball temperature increases to 90 ℃. then the air is passed through the pile of corn kernels to dry. Then this air is passed to the dehumidifier to reduce the RH to 10 ℃. Draw the course of the air change process on a psychometric diagram. The airflow rate through the corn kernels pile and dehumidifier was 6.0 m / s and the pile cross-sectional diameter was 0.5 m a. Determine the amount of water lost from the pile of corn kernels (in grams of water / second) = b. Determine the amount of water lost from the air when passing through the dehumidifier (in grams of water / second) =