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

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, BardiFan

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Answers: 3

continue

Engineering, 04.07.2019 18:10, viicborella

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Answers: 1

continue

Engineering, 04.07.2019 18:10, krystabrewer3

What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information

Answers: 3

continue

Engineering, 04.07.2019 19:10, lexie223

Acircular aluminum shaft mounted in a journal is shown. the symmetric clearance gap between the shaft and journal is filled with sae 10w-30 oil at t 30°c. the shaft is caused to turn by the attached mass and cord. develop and solve a differential equation for the angular speed of the shaft as a function of time.

Answers: 2

continue

Do you know the correct answer?

Chilled ethylene glycol (sp gr = 1.11) is pumped through the shell side of a condenser and a control...