Two air stripping units are being installed at industrial sites. One will be used to strip Toluene from a ground water source that is pumped at a flow rate of 100 L/min. The other will be pumped at the same flow rate but will be used to strip Trichloroethylene. Both have been designed with a stripping factor of 6. What is the ratio of the two air flow rates (Qtoluene/QTCE)?

A cleaning solution for a CIP in a heat exchanger for food production is made up by combining one part phosphoric/ glycolic acid concentrate with eight parts of water. a)food technician has 10 liters of the cleaning solution already prepared and needs to increase this to 25 liters. a. How many liters of acid concentrate and how many liters of water should be added to the existing 10 liters of cleaning solution to obtain 25 liters at the correct dilution? b)The acid concentrate is a 10% solution (ie, it is 90% water, 10% acid). What is the concentration of the diluted solution?

Design a hydrocooling unit that can cool fruits and vegetables from 30°C to 5°C at a rate of 20,000 kg/h under the following conditions: The unit will be of flood type that will cool the products as they are conveyed into the channel filled with water. The products will be dropped into the channel filled with water at one end and picked up at the other end. The channel can be as wide as 3m and as high as 90 cm. The water is to be circulated and cooled by the evaporator section of a refrigeration system. The refrigerant temperature inside the coils is to be –2°C, and the water temperature is not to drop below 1°C and not to exceed 6°C. Assuming reasonable values for the average product density, specific heat, and porosity (the fraction of air volume in a box), recommend reasonable values for the quantities related to the thermal aspects of the hydrocooler, including how long the fruits and vegetables need to remain in the channel, the length of the channel, the water velocity through…

J 5 A still which produces ethanol from corn mash. Edgar wants to condense the ethanol by running it though a copper tube. If the copper tube can transfer 0.6 btu per second and Edgar wants to produce 10 fifths of ethanol per hour, how long should the tube be?