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Design of Condenser: 1) Heat Balance 2) Temeprature Difference

The document provides steps to design a condenser including: 1) performing a heat balance calculation, 2) calculating the log mean temperature difference, 3) calculating the overall heat transfer coefficient, 4) performing shell side calculations, 5) performing tube side calculations, 6) calculating pressure drops on the shell and tube sides, 7) calculating the clean overall heat transfer coefficient, and 8) accounting for a dirt factor. The design process is outlined in 7 steps and involves calculations of parameters like heat transfer coefficients, velocities, Reynolds numbers, and pressure drops.

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Bhawani Pratap Singh Panwar
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272 views1 page

Design of Condenser: 1) Heat Balance 2) Temeprature Difference

The document provides steps to design a condenser including: 1) performing a heat balance calculation, 2) calculating the log mean temperature difference, 3) calculating the overall heat transfer coefficient, 4) performing shell side calculations, 5) performing tube side calculations, 6) calculating pressure drops on the shell and tube sides, 7) calculating the clean overall heat transfer coefficient, and 8) accounting for a dirt factor. The design process is outlined in 7 steps and involves calculations of parameters like heat transfer coefficients, velocities, Reynolds numbers, and pressure drops.

Uploaded by

Bhawani Pratap Singh Panwar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Design of Condenser

1) Heat Balance
Q = mhh
2) Temeprature Difference
LMTD = (T2-T1)/ln( T2/ T1)
Tc,tc or ta
3) Calculation of UD
Trail UD
Corrected UD
UD = Q/( A t )
Where A = Corrected area ft2
4) Shell Side Claculations
I. as
II. Gs
III. Loading G``
G`` = W/LNt2/3 for horizontal condenser.
G`` = W/3.14NtDo for vertical condenser
IV. Assume ho
V. tw
VI. Film Temperature
tf = (Tv + tw)/2
VII. Determine ho = kf, f, sf,
5) Tube side Calculations
i. at
ii. Gt
iii. Vel, V = Gt/3600p
iv. At ta
v. Ret = DGt/
vi. hi
vii. hio
6) Pressure Drops
Shell Side
at Tv calculate then Re for f
Ps = 0.5(fGs2Ds(N+1))/(5.22*1010DeS) psi
Tube Side
f from Ret
Pt = (fGt2Ln)/(5.22*1010DeSt) psi
Pr = (4nV2/(S2g`) psi
Pr = Pt + Pr psi
7) Clean Overall Coefficient UC
8) Dirt factor RD

Dr. J K Shrivastava
H.O.D Chemical Engineering

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