Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

(10 pts) A 1-2 shell-and-tube heat exchanger has been recommended for cooling distilled water from 33.9 to 29.4C. The proposed unit contains 160 copper tubes

image text in transcribed

(10 pts) A 1-2 shell-and-tube heat exchanger has been recommended for cooling distilled water from 33.9 to 29.4C. The proposed unit contains 160 copper tubes (kcopper=383mKW), each with a 0.0191m outside diameter, 18BWG, and 4.876m in length. The tubes are laid out on a 0.0238m triangular pitch within a 0.387m inside diameter shell. Twenty-five percent cut segmental baffles, spaced 0.3m apart, are located within the shell. Cooling water at a temperature of 24C and a flow rate of 2.0sm will be used in the tubes to provide the cooling. Under these conditions, the fouling coefficients for the distilled water and the cooling water can be assumed to be 11,360 and 5680m2KW, respectively. The distilled water will be the tube-side fluid. Explain your reasoning. Determine the heat exchange area required for cooling the distilled water with a flow rate of 22skg. Use the relation developed by Colburn, to estimate the average outside film heat transfer coefficient: ho=DokFsao(fDoGs)0.6(kCp)f1/3 where the subscript f denotes conditions at the average film temperature, ao=0.33 when tubes in a tube bank are staggered, Fs is a correction factor to account for bypassing effects usually between 1.1 and 1.7, and the remaining notation is similar to what was presented in lecture. In this case, assume Fs=1.3. Will this heat exchanger work for the intended purpose? Note that you will need to look up the properties of water at the appropriate temperatures

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, Hendrick C Van Ness, Michael Abbott, Hendrick Van Ness

6th Edition

0072402962, 978-0072402964

More Books

Students also viewed these Chemical Engineering questions