Freshly cut lumber is dried to reduce its weight, increase its strength, and to prevent decay. In an industrial process "wet" lumber, which is 35% by weight water, is dried to 10% by weight water. To dry the lumber low-moisture air is blown across the lumber, this air absorbs some of the water in the lumber. The available air- labeled "dry" air in the diagram below - is 2% by weight water; this air has so little water that, when used to dry the wood, it warps and cracks the lumber. To produce air of the correct moisture (7% by weight water) some of the air exiting the process is recycled. The known stream concentrations are labeled on the diagram below. In addition, 1.82 lbs of "dry" air enter for every 1 lb of "wet" lumber entering the process. Using 100 lbs of wet lumber as the basis, what fraction of moist air leaving the drier (Stream X) is recycled; that is, what is the value of R/X (that is lbs of R/lbs X)?

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: The resulting soap has different characteristics. This depends on the ingredients used in making…

A: 1.To remove oil and dirt from clothes Soaps are the commonly used cleansing agents.  2. Soaps could…

Q: Drying is widely used to remove solvents from coated webs, which include coated paper and cardboard,…

A: The types of dryers that can be used with coated webs are: Roll support dryers Floatation dryers

Q: Glass is substance.

A:

Q: Make a flow chart of the process, showing all the steps in the process and labeling all of the input…

A:

Q: Select all that apply for  saturated vapor:     It refers to a point on a T-v diagram on a specific…

A: The saturated vapor is a substance that exists completely as vapor at its saturation temperature. On…

Q: Write out and balance the overall equation for the manufacture of vinyl chloride from ethylene,…

A: vinyl chloride = C2H3Clethylene =  C 2H4Chlorine = Cloxygen = OA( C2H4) + B( Cl2) + C(O2) ------>…

Q: In the process of drying carrots using a parallel flow drying system, the material with a moisture…

A: Draw the diagram for the drying of carrots as follows:

Q: the amount of excess combustion air is normally determined by analysis of stack_____ a) the fuel…

A: Excess air is the air which is used in excess for combustion of various fuels (solids, liquid, and…

Q: Produce a scatter plot for windshield water distillation, Vapor temperature along y-axis and volume…

A: Given: Data for distillate volume (mL) and vapor temperature (°C) are as given below: Distillate…

Q: 5.3 The laboratory test data for a standard Proctor test are given below. Find the maximum dry unit…

A: Determine the moist unit weight  of the soil using the formula. Here, W is the weight of the…

Q: 10 g of solid are added to 40ml of water . After stirring , some of the solid settles to the bottom.…

A:

Q: Food ingredients weighing 90 kg initially have a moisture content of 450% (dry basis). This material…

A: Mass = 90kgInitial Moisture content = 450% (wet basis)Final moisture content = 10%To find: The mass…

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.