Engineering, 08.04.2021 16:00 layla07
to Example 9.1, that the use of a single filter produces a plant efficiency of about 75%, with very high hydraulic and BOD loading rates. To reduce the loading rates and increase plant efficiency, the engineer decides to add an identical filter in parallel to the first one. The direct recirculation ratio is maintained at 2.0. Wastewater temperature is 20°C. Calculate the new hydraulic loading rate, organic loading rate, effluent BOD5 concentration, and overall plant efficiency. Is the new design better than the old one?
Answers: 2
Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
Answers: 3
Engineering, 04.07.2019 18:20
Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.
Answers: 3
to Example 9.1, that the use of a single filter produces a plant efficiency of about 75%, with very...
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