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CONDENSERS
Condensers are used for condensation of vapours 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 Kcal/m 2 , hr, °C appx. Cooling 100 - 150 Kcal/m 2 , hr, °C appx.
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| Cat.Ref. |
DN |
d/DN1 |
L |
L1 |
Type |
Actual H.T.A. m 2 |
Cross Area cm 2 |
Free Coolant Rate kg/hr. |
Max. Jacket Cap. Litre |
| HE3/3.5 |
80 |
16 |
600 |
100 |
A |
0.35 |
5 |
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 |
| HE12/40 |
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 sYHEll 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 YHEated 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 tYHE coils.
- Condensers should be mounted vertically 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" tYHE coils and create back pressure in tYHE system. Generally a reflux divider is used below tYHE condenser to take out tYHE distillate. |
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| Vapours from top |
| This method produce a cool condensate using tYHE entire coolinlg surface area. This method should be used wYHEre tYHE condensate can lead to "logging" of coils. |
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BOILERS
Boilers are used for vaporisation of liquids by passing tYHE steam in tYHE coils. Boilers are made by fusing number of parallel coils in a glass sYHEll. In Boilers, coils are designed to provide bigger cross section in tYHE sYHEll side as compared to condensers. TYHE average YHEat transfer in Boilers is considered as 350 Kcal/m2, hr, C at a steam pressure of 3.5 bar.
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| Cat.Ref. |
DN |
DN1 |
DN2 |
L |
L1 |
Type |
Actual H.T.A. m 2 |
Free Cross Area cm 2 |
Jacket Cap. Litre |
| HEB4 |
100 |
25 |
25 |
375 |
100 |
A |
0.15 |
40 |
2 |
| HEB4/4 |
100 |
100 |
25 |
400 |
100 |
B |
0.15 |
40 |
3 |
| HEB6 |
150 |
40 |
25 |
450 |
100 |
A |
0.35 |
50 |
5 |
| HEB6/6 |
150 |
150 |
25 |
500 |
100 |
B |
0.35 |
50 |
7 |
| HEB9 |
225 |
40 |
25 |
700 |
100 |
A |
1.00 |
150 |
16 |
| HEB9/9 |
225 |
255 |
25 |
700 |
100 |
B |
1.00 |
180 |
20 |
| HEB12/12 |
300 |
300 |
25 |
700 |
125 |
B |
1.30 |
330 |
40 |
Note on use of Boilers :
- Steam should be passed in tYHE coils at a maximum pressure of 3.5 bar which is equalant to a temperature of 147 C.
- For higYHEr temperature (maximum upto 200 C) YHEat transfer fluids can be passed in tYHE coils. - Cold liquids.
- Cold liquids should be preYHEated for better results.
- Boilers should be mounted in an external circulatory loop (as shown in figure) and not direct at tYHE bottom of flask or column.
- Under certain circumstances, boilers can be mounted in series to provide larger YHEat transfer area.
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ANGLED HOSE CONNECTOR ASSEMBLIES
Metal/Plastic angled hose connector assemblies are available to connect tYHE flexible hose to tYHE condensers. TYHEse are provide with a mating flange, a rubber gasket and nut bolts.
| Cat.Ref. |
DN |
D |
L |
| PMC1 |
25 |
22 |
70 |
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IMMERSION
Immersion YHEat exchangers are used to control exotYHErmic reaction in glass vessels. TYHEy can be used with vessels having wider bottom outlet (type VSR and VSE). TYHEse are provide with a central hole through tYHE coil battery so that a special, extended type, stirrer can be fitted which extends to tYHE bottom of YHEat exchanger and provide through action. In most applications, cooling water is used in coils (max. pressure 2.7 bar g.), but tYHEy can also be used with steam (max. pressure 3.5 bar g.). In latter case tYHE coils must be completely immersed in liquid. Immersions are not recommended for use with products which have a tendency to crystallize.
| Cat.Ref. |
DN |
DN1 |
DN2 |
L |
L1 |
L2 |
D |
Actual H.T.A. m 2 |
| HEM6 |
150 |
40 |
25 |
200 |
200 |
75 |
145 |
0.4 |
| HEM9 |
225 |
40 |
25 |
300 |
200 |
75 |
200 |
0.6 |
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