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Boilers are used for vaporization of
liquids by passing the steam in the coils.
Boilers are made by fusing number of parallel coils in
a glass shell. In Boilers, coils are designed to
provide bigger cross section in the shell side as
compared to condensers.
The average heat transfer in Boilers is considered as
350 Kcal/m² ,hr, °C at a steam pressure of 3.5 bar.
|
Cat.
Ref. |
DN |
DN1 |
DN2 |
L |
L1 |
Type |
Actual
H.T.A.
m² |
Free
Cross
Area
Cm² |
Jacketed
Cap.
Litre |
HEB4
HEB4/4
HEB6
HEB6/6
HEB9
HEB9/9
HEB12/12 |
100
100
150
150
225
225
300 |
25
100
40
150
40
225
300 |
25
25
25
25
25
25
25 |
375
400
450
500
700
700
700 |
100
100
100
100
100
100
125 |
A
B
A
B
A
B
B |
0.15
0.15
0.35
0.35
1.00
1.00
1.30 |
40
40
50
50
150
180
330 |
2
3
5
7
16
20
40 |
Notes on use of Boilers:
- Steam should be passed in the coils at a maximum
pressure of 3.5 bar which is equalant to a temperature
of 147°C.
- For higher temperature (maximum up to 200°C) heat
transfer fluids can be passed in the coils. ~ Cold
liquids
- Cold liquids should be preheated for better results.
- Boilers should be mounted in an external circulatory
loop (as shown in figure) and not direct at the bottom
of flask or column.
- Under certain circumstances, boilers can be mounted in
series to provide larger heat transfer area. |
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