Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

I. 1A circulating chilled-water system is used to cool an oil stream from 90 to 70F in a tube-inshell heat exchanger shown. The temperature of

image text in transcribed

I. 1A circulating chilled-water system is used to cool an oil stream from 90 to 70F in a tube-inshell heat exchanger shown. The temperature of the chilled water entering the process heat exchanger is maintained constant at 50F by pumping the chilled water through a cooler located upstream of the process heat exchanger. The design chilled-water for normal conditions is 600 gpm, with chilled water leaving the process heat exchanger at 65F. Chilled-water pressure drop through the process heat exchanger is 15psi at 800gpm. Chilled-water pressure drop through the refrigerated cooler is 15psi at 800gpm. The temperature transmitter on the process oil stream leaving the heat exchanger has a range of 40180F. The range of the orifice-differential pressure flow transmitter on the chilled water is 01500gpm. All instrumentation is electronic (4 to 20 mA ). Assume the chilled-water pump is centrifugal with a flat pump curve (total pressure drop across the system is constant). The control valve has a linear trim with Cv=128.81gpm/psi0.5. The valve is 40 percent open at the 800gpm design rate and has a maximum flow of 1500gpm. 1) The total pressure drop through the system is 2) The pressure drop through the cooler and the heat exchanger at maximum flow rate is 3) The value of the signal from the temperature transmitter is 4) The value of the signal from the flow transmitter is 5) If Cv=200gpm/psi0.5 and the total pressure drop through the system is 200psi, determine the fraction open of the chilled-water control valve when the chilled-water flow rate is reduced to 600 gpm. f(x)=

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Introduction to Chemical Engineering Thermodynamics

Authors: J. M. Smith, H. C. Van Ness, M. M. Abbott

7th edition

71247084, 978-0071247085

More Books

Students also viewed these Chemical Engineering questions

Question

9-11. Are emotional appeals ethical? Why or why not? [LO-4]

Answered: 1 week ago

Question

9-13. What techniques are used to capture the readers attention?

Answered: 1 week ago