Engineering, 04.07.2020 14:01 ronny80
Chilled ethylene glycol (sp gr = 1.11) is pumped through the shell side of a condenser and a control valve at anominal flow rate of 200 gal/min. The total pressure drop over the entire system is constant. The pressure drop over the condenser is proportional to the square of the flow rate and is 30 psi at the nominal flow rate. Make plots of flow rate versus valve stem position L for linear and equal percentage control valves, assuming that the valves are set so that f(L) = 0.5 at the nominal flow rate. Prepare these plots for the situations where the pressure drop over the control valve at the design flow ia (a) 5 psi (b) 30 psi (c) 90 psi What can you conclude concerning the results from these three sets of design conditions? In particular, for each case comment on linearity of the installed valve, ability to handle flow rates greater than nominal, and pumping costs. solution complete
Answers: 3
Engineering, 04.07.2019 08:10, doggo242
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
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Engineering, 04.07.2019 18:10, Larkinlover703
Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables
Answers: 1
Chilled ethylene glycol (sp gr = 1.11) is pumped through the shell side of a condenser and a control...
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