Engineering, 19.11.2019 04:31 marianesabrinap20
The town of pittsford, ny has requested proposals for a new drinking water plant. the design flow for the plant is 0.1065m3/s. the average annual water temperature is 19°c. the following design assumptions for a rapid-mix tankhave been made: a. number of tanks: 1 (with 1 backup spare) b. tank configuration: circular with liquid depth = 2 x diameter c. retention time: 10sd. velocity gradient: 800s-1 e. impeller type: turbine, 6 flat blades, kt = np = 5.7 f. available impeller diameters: 0.45, 0.60, and 1.2m cee2712/3711g. assume b =h/3 (b=water depth below impeller)design the rapid mix system by providing the following: (a) power input in kw(b) tank dimensions in m(c) impeller diameter in m(d) rotational speed of the impeller in rpm.
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
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.
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Engineering, 04.07.2019 18:10
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
Answers: 1
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
The town of pittsford, ny has requested proposals for a new drinking water plant. the design flow fo...
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