Shell and Tube Tubular Heater Design Calculation
     
  Input Data (yellow colour cell)    
S.no Particulars Values UOM
1 Crushing rate TCH
2 Juice % cane %
3 Velocity of Juice m/sec
4 Tube OD mm
5 Tube Thickness mm
6 Tube ID mm
6 Tube length mm
7 Specific heat of juice
Author:
Sp.heat of juice =1- 0.006Bx
 Kcal/Kg/oC
8 Legment mm
9 vapour inlet temperature oC
10 juice I/L temperature oC
11 Juice o/l temperature oC
12 Tube plate thickness mm
13 Velocity of vapour
Author:
genarly taken for ex.25, 1st 30, 2nd 32.5, 3rd 35, 4th 40, 5th 45.7m/sec
 m/sec
14 Heater Heating Surface m2
15 Velocity of condensate m/sec
16 Proportional factor                (β)  
Latent heat of vapour kcal/Kg
  Specific volume of vapour M3/kg
       
       
       
1 No. of tubes per pass tubes/pass
  i.e  
2 No. of tubes
Author:
S=ΠDLN
  
  i.e no.s
3 No. of passes
Author:
=no.of tubes/tubes per pass
  
     
  i.e No. of passes is always taken even 
  As Per Even number of passes Heater parameters    
4 No. of compartments  
       
5 Actual number of tubes no.s
       
6 Actual heating surface m2
       
7 Actual velocity
Author:
Q=AV
V=Q/(A x no. of tubes per passes)
 m/sec
8 pressure drop across the juice heater
Formula:
=0.0025 x no.of pass x sq. of actual velocity x ((L/D) + 3)
 MWC
       
9 Tube plate dia    
  Pitch
Author:
OD+legment+tube tolerance+hole tolerance
  
  Tube plate Area
Author:
0.866 x (P)2 x no. of tubes / β
 mtrs
  Tube plate dia
Author:
Taken 20% extra for noxious gas withdrawal
 mm
10 Dia of juice inlet pipe mtrs
  i.e NB
11 Vapour inlet Dia
Author:
A = Q/V
 mtrs
  i.e NB
12 Condensate pipe Dia NB
  i.e
Author:
For free removal condensate taken 50% extra
 NB
13 NCG pipe line dia    
  Cross section area of pipe
Author:
For every 10m2 heating surface taken 1cm2 cross section area of NCG line
 cm2
  NCG pipe line dia mm dia X  4no.s withdrawals
Dynamic Tubular Heater Design Calculation 
     
  Input Data (yellow colour cell)    
S.no Particulars Values UOM
1 Crushing rate TCH
2 Juice % cane %
3 Velocity of Juice m/sec
4 Tube OD mm
5 Tube Thk mm
6 Tube length mm
7 Specific heat of juice
Author:
Sp.heat of juice =1- 0.006Bx
 Kcal/Kg/oC
8 Legment mm
9 vapour I/L temperature oC
10 juice I/L temperature oC
11 Juice o/l temperature oC
12 Tube plate thickness mm
13 Velocity of vapour
Author:
genarly taken for ex.25, 1st 30, 2nd 32.5, 3rd 35, 4th 40, 5th 45.7m/sec
 m/sec
14 Percent of vapour In Dynamic  %
15 Heating Surface m2
16 proportional factor(β)  
17 Velocity of condensate m/sec
  Latent heat of vapour kcal/Kg
  Specific volume of vapour M3/kg
       
1 No. of tubes per pass    
  i.e tubes/pass
     
2 No. of tubes    
  No. of tubes
Author:
S=ΠDLN
  
  i.e no.s
3 No. of passes    
  No. of passes
Author:
=no.of tubes/tubes per pass
  
  i.e  
    No. of passes is always taken even 
  As Per Even number of passes Heater parameters    
4 No. of compartments  
       
5 Actual no. of tubes no.s
       
6 Actual heating surface m2
       
7 Actual velocity
Author:
Q=AV
V=Q/(A x no. of tubes per passes)
 m/sec
       
8 pressure drop across the juice heater
Formula:
=0.0025 x no.of pass x sq. of actual velocity x ((L/D) + 3)
 MWC
       
9 Tube plate dia    
  Tube plate Area
Author:
0.866 x (P)2 x no. of tubes / β
 mtrs
  Tube plate dia
Author:
Taken 20% extra for noxious gas withdrawal
 mm
10 Dia of juice inlet pipe mtrs
  i.e NB
11 Vapour inlet Dia
Author:
A = Q/V
 mtrs
  i.e NB
12 Vapour Outlet Dia
Author:
A = Q/V
 mtrs
  i.e NB
13 Condensate pipe Dia NB
  i.e
Author:
For free removal condensate taken 50% extra
 NB
14 NCG pipe line dia    
  Cross section area of pipe
Author:
For every 10m2 heating surface taken 1cm2 cross section area of NCG line
 cm2
  NCG pipe line dia mm dia X  4no.s withdrawals