Engineering, 22.04.2020 03:44, autumnskye1
Problem 4 (30 points): The Blue Ox Tannery has asked you to assist them in preparations to file for a NPDES permit to discharge wastewater into the Zmellsbad River. The water quality criterion for Zmellsbad River is 5.00 mg/L of DO. They have you the following questions: What is the critical DO and where does it occur downstream? [Use Saturation DO concentration as 10.15 mg/L] Parameter Blue Ox wastewater Zmellsbad River Flow, m3/s 1.5 6.5 BOD5 at 15 C, mg/L 85 N/A Ultimate BOD at 15 C, mg/L N/A 7.66 DO, mg/L 1.00 6.00 Temperature, C 15 15 k at 20 C, d-1 0.3 N/A Speed, m/s N/A 0.3 Depth, m N/A 3.5 Bed-activity coefficient N/A 0.300
Answers: 1
Engineering, 04.07.2019 18:10, meganwintergirl
Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise
Answers: 3
Engineering, 04.07.2019 18:10, michellerosas
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:20, CelesteN64
Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options
Answers: 2
Engineering, 04.07.2019 19:10, jimena15
10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.
Answers: 2
Problem 4 (30 points): The Blue Ox Tannery has asked you to assist them in preparations to file for...
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