Shiva Scientific Glass Pvt. Ltd. Shiva Scientific Glass Pvt. Ltd. ISO 9001:2015 certified Company

Heat Exchangers (Condensers) - Coil Type



Condenserors are used for condensation of vapour and cooling of liquids. Condensers are made by fusing number of parallel coils in a glass shell. Coils are made in different diameters using tubes of different bores. The average co-efficient of heat transfer in coil condenser is considered as :-

Condensation : 200 - 270 Kacl/m2, hr,oC apprx.
Cooling : 100 - 150 Kacl/m2, hr,oC apprx.

Cat. Ref.
DN
d/DN1
L
L1
Type
Actual H.T.A. m2
Cross Area Cm2
Free Coolant Rate Kg./hr.
Max. Jacket Cap. Litre
HE2/3.5
80
16
600
100
A
0.35
05
1300
2
HE4/5*
100
19
600
100
A
0.50
30
2400
4
HE4/6
100
19
750
100
A
0.60
30
2400
6
HE6/10
150
25
600
100
B
1.00
52
2600
9
HE6/15*
150
25
850
100
B
1.50
52
2600
11
HE9/25*
225
25
800
100
B
2.50
125
3300
18
HE12/25
300
25
600
125
B
2.50
175
5700
25
HE12/40
300
25
900
125
B
4.00
175
5700
35
HE16/40
400
25
600
125
B
4.00
450
6200
60
HE16/50
400
25
700
125
B
5.00
450
6200
70
HE18/60
450
40
750
150
C
6.00
820
4800
100
HE18/80
450
40
900
150
C
8.00
820
6200
110
HE24/120
600
50
1250
300
C
12.00
1520
6200
265

Precautions to be taken in use of condensers

  • Vapours should be passed through the shell only.
  • Maximum pressure of coolant should be 2.7 bars.
  • Adequate flow of coolant should be used.
  • Steam should not be used in coils.
  • Coolant should not be heated to boiling point.
  • Coolant control valve should be turned slowly.
  • Coolant should be allowed to drain freely.
  • Brine can be used in coils in a closed circuit.
  • Water main should be connected with flexible hose.
  • Ensure no freezing of water remaining in the coils.
  • Condensers should be mounted verically only.
  • Condensers can be mounted in series to provide larger surface area.

METHODS OF USE

Vapours from Bottom
This method is simple to install over a reactor. However, this results in condensate returning substantially at its condensing temperature. In this method care must be taken that condensate is not excessive that it can lead to "logging" the coils and create back pressure in the system. Generally a reflux divider is used below the condenser to take out the distillate.




Vapours from Top
This method produce a cool condensate using the entire cooling surface area. this method should be used where the condensate can lead to "logging" of coils.

 
 


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