Engineering, 14.12.2019 00:31 saniyawilliams1207
The flow rate to a fine-bubble aeration basin is 21.5 mgd at 20°c with an influent bod concentration of 180 mg/l and 31 mg/l of ammonia. the effluent concentration is 10 mg/l of bod and no ammonia. according to the aeration equipment manufacturer, at the local operating conditions, for this equipment otr = 3.0 lb o2/hp-hr and ote = 25%. calculate:
a) the total oxygen demand, in lb/day.
b) the power required to operate the aeration system, in hp.
c) the air flow rate, in ft3 /min
Answers: 1
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 03.07.2019 15:10
If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.
Answers: 1
The flow rate to a fine-bubble aeration basin is 21.5 mgd at 20°c with an influent bod concentration...
Chemistry, 07.07.2019 18:20
Mathematics, 07.07.2019 18:20
Mathematics, 07.07.2019 18:20
Mathematics, 07.07.2019 18:20
Social Studies, 07.07.2019 18:20
Mathematics, 07.07.2019 18:20