Scribd
Upload
328 views12 pages

A. Process Inputs Fluid Flow Rate (Kg/hr) Density (gm/cc) Sp.Heat (Kcal/kg.°C) λ (Kcal/kg) Inlet Temperature °C

This document provides process input data for a heat exchanger including flow rates, temperatures, heat duties, and properties for both the tube side and shell side fluids. Key specifications include a tube side flow rate of 331 kg/hr at 42°C inlet and 47°C outlet and shell side flow rate of 35,255 kg/hr at 278°C inlet and 50°C outlet, resulting in a log mean temperature difference of 66.31°C. The heat duty is calculated as 176,277.36 kcal/hr. Detailed geometry and material properties are also listed for pressure drop and heat transfer calculations.

Uploaded by

Prad1979
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
328 views12 pages

A. Process Inputs Fluid Flow Rate (Kg/hr) Density (gm/cc) Sp.Heat (Kcal/kg.°C) λ (Kcal/kg) Inlet Temperature °C

This document provides process input data for a heat exchanger including flow rates, temperatures, heat duties, and properties for both the tube side and shell side fluids. Key specifications include a tube side flow rate of 331 kg/hr at 42°C inlet and 47°C outlet and shell side flow rate of 35,255 kg/hr at 278°C inlet and 50°C outlet, resulting in a log mean temperature difference of 66.31°C. The heat duty is calculated as 176,277.36 kcal/hr. Detailed geometry and material properties are also listed for pressure drop and heat transfer calculations.

Uploaded by

Prad1979
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
You are on page 1/ 12

A.

Process Inputs
Tube Side (HOT)
Fluid Fluid 1
Flow Rate (Kg/hr) 331
Density (gm/cc) 0.89
Sp.Heat (Kcal/kg.C) 0.77
(Kcal/kg) 357

42 t1
Inlet Temperature
C

Outlet Temperature C
47 t2

LMTD 66.31
Properties SI fps
Density 1000 kg/m3 62.48
Viscosity 0.89 cP 0.89
0.00089 kg/(m.sec) 2.153
k 0.6 w/m.C 0.347
Sp. Heat 4.187 J/(kg.C) 0.001
Sp.gravity 1
Gravitational constant 9.81 m/sec2 32.184648
Q Heat Duty (Kcal/hr) 176277.36
Q Heat Duty (Btu/hr) 698939.7324
Q Heat Duty (Watts) 204873.465066667
U (w/m2.C) 500
A (m2) 6.18

Flow rate Density


Sr.No. Stream
kg/hr gm/cc
1 ROL 331.0 0.890
2 Condensate 331.0 0.890
3 CW in 0.0 1.000
4 CW Out 0.0 1.000

47 278
C C
4 1
3 2
42 50
C C
8

Tube Side Data


Fluid Cooling Water
Properties SI fps
Density 1000 kg/m3 62.48
Viscosity 0.89 cP 0.89
0.00089 kg/(m.sec) 2.153
k 0.6 w/m.C 0.347
Sp. Heat 4.187 J/(kg.C) 0.001
Sp.gravity 1
Gravitational constant 9.81 m/sec2 32.184648
U 5000 w/(m2.C)
A 0.618 m2
Details SI fps
Do 25.4 mm 0.083
Di 22.09 mm 0.072
Pt 31.75 mm 0.104
L 3m 9.8424
Np 6
Nt 2.581
Tube Side Calculation
At 0.0002179896 m2 0.0018
m 35255.472 kg/hr 77703.1
Gt 44925.009 kg/(m2.sec) 43805695.728
u 44.9250094597 m/sec 194.754
Re 1115048.8303 1474211.87195
Pr 0.006 0.006
jh 0.007

hi 6245.8 w/(m2.C) 1100


8039.98514546 w/(m2.C)
hid 5431.9 w/(m2.C) 956.65

Overall HTC
Rd 0.0003 (m2.C/w)
1/U 0.0071371046 (m2.C/w)
U 140.11 w/(m2.C)
A 22.05 m2
Pressure Drop Calculations
Tube Side Calculation
Pt = Np*{(8*jf*(L/Di)*(/w)^-m+2.5)*(av*ut^2)/2}
Pt 15182971.6048 Pa 2201.5308827
154.866310369 kg/cm2
Pt =( f*Gt2*L*n/(5.22*10^10*Ds*t))
Pt 0.000 psi
0 kg/cm2
Return loss
Pr (4n/s)*(u^2/2*g)
Pr 52065.623 psi
3660.213 kg/cm2
Ptotal 3660.213 kg/cm2
Shell Side (COLD)
Fluid 2

1
1
540

T1

T2

66.31
fps SI fps
lb/ft3 890 kg/m3 55.61
cP 0.63 cP 0.63
lb/(ft.hr) 0.00063 kg/(m.sec) 1.524
Btu/(lb.ft.hr) 0.398 w/m.C 0.230
Btu/(lb.F) 3323 J/(kg.C) 0.794
0.89
lb/sec2 9.81 m/sec2 32.184648
6 m Mass Flow Rate (Kg/hr) 35255.472
24 m Mass Flow Rate (lb/hr) 77703.060288
6667
500
6.18

Sp.Heat LMTD
kcal/kg.C kcal/kg T1
0.770 357.0 T2
0.770 357.0 t1
1.000 540.0 t2
1.000 540.0 66.31

Flow rate Density


Stream
kg/hr gm/cc
1 ROL 331.0 0.890
2 Condensate 331.0 0.890
3 CW in 0.0 1.000
4 CW Out 0.0 1.000

Heat Duty

176277.36 kcal/hr
Hot fluid Q
698939.7324 Btu/hr
35255.472 kg/hr
Cold fluid m
77703.060288 lb/hr

LMTD
T1 278 LMTD
T2 50
t1 42
t2 47
Shell Side Data
r Fluid Fluid 2
fps Properties SI
lb/ft3 Density 890
cP Viscosity 0.63
lb/(ft.hr) 0.00063
Btu/(lb.ft.hr) k 0.398
Btu/(lb.F) Sp. Heat 3323
Sp.gravity 0.89
lb/sec2 Gravitational constant 9.81

fps Details SI
ft Shell Id 480
ft No of baffles
ft Baffle spacing 500
ft % baffle cut 40
Pt 31.75

Shell Side Calculation


ft2 As 0.048
lb/hr m 331.0
lb/ft2.hr Gs 1.916
lb/sec u 0.00215
De 0.0183

Re 55.69
Pr 5.260
Btu/(hr.ft2.F) jh 0.3

Btu/(hr.ft2.F) Fig 25
ho 150.31
Shell Side Calculation
2)/2} Ps = 0.5*8*Jf*(Ds/de)*(L/BS)*((*us^2)/2)
psi Ps 0.3890
3.97E-06
278

50

fps
lb/ft3
cP
lb/(ft.hr)
Btu/(lb.ft.hr)
Btu/(lb.F)

lb/sec2
35255.472
77703.060288

LMTD
278
50
42
47
66.31

Sp.Heat
kcal/kg.C kcal/kg
0.770 357.0
0.770 357.0
1.000 540.0
1.000 540.0

204873.465067 w

66.31

Shell Side Data


Fluid 2
SI fps
kg/m3 55.61 lb/ft3
cP 0.63 cP
kg/(m.sec) 1.524 lb/(ft.hr)
w/m.C 0.230 Btu/(lb.ft.hr)
J/(kg.C) 0.794 Btu/(lb.F)
0.89
m/sec2 32.184648 lb/sec2

SI fps
mm 1.574 ft

mm 1.64 ft
% 40 %
mm 0.10414 ft

m2 0.516 ft2
kg/hr 729.52 lb/hr
kg/(m2.sec) 1412.70 lb/ft2.hr
m/sec 0.007 lb/sec
m 0.060 ft for triangular pitch
m ft for square pitch
55.698
5.260
4

w/(m2.C) 26.47 Btu/(hr.ft2.F)


Jf*(Ds/de)*(L/BS)*((*us^2)/2)
Pa 5.640156E-005 psi
kg/cm2
Unit Conversions

1 Btu/hr.ft2.F 5.678 W/(m2*C)


1 ft 0.3048 m
1 kg 2.2046 lb
1 W/(m2*C) 0.8598 kcal/hr.m2.C

04.07.13

You might also like