Coil Boilers & Product Coolers
Coil Boilers & Product Coolers
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Full technical data and dimensions
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Boiler
LSHEB series, 0.15 m² to 1.30 m²
Coil boiler for vapourising liquids with steam — parallel coils fused into a glass shell, sized on a 350 Kcal/m²hr·°C average heat transfer at 3.5 bar steam.
| Product type | Coil boiler (vapouriser) in glass shell |
|---|---|
| Construction | Number of parallel coils fused in a glass shell |
| Heating medium | Steam through the coil |
| Maximum steam pressure | 3.5 bar, equivalent to 147 °C |
| Average heat transfer | 350 Kcal/m²hr·°C at 3.5 bar steam pressure |
| Free actual H.T.A. | 0.15 m² to 1.30 m² |
| Shell size range | DN 100 to DN 300 |
| Cross area | 40 cm² to 330 cm² |
Product overview
What it does, and where it fits.
The boiler is used for vapourisation of liquids by passing steam in the coil. It is made by fusing a number of parallel coils in a glass shell, so the heating surface sits directly in the liquid being boiled and the whole process stays visible.
In the boiler, coils are designed to provide a bigger cross section on the shell side as compared to a condenser. That matters because the shell side has to carry vapour away as it is generated — too small a cross section and the boiler chokes on its own product.
The average heat transfer in a boiler is considered as 350 Kcal/m²hr·°C at a steam pressure of 3.5 bar. The catalogue's note on use is specific: steam should be passed in the coil at a maximum pressure of 3.5 bar, which is equivalent to a temperature of 147 °C.
Features
Built into every unit.
- Vapourises liquid by passing steam through the coil
- Made by fusing a number of parallel coils in a glass shell
- Bigger shell-side cross section than a condenser, to carry vapour away
- Free actual heat transfer area 0.15 m² to 1.30 m²
- Jacket capacity 2 to 40 litres
- Type A and Type B builds — small side inlet or full-bore DN1
- Seven catalogue references from DN 100 to DN 300
Benefits
Why it earns its place in the line.
- Glass shell keeps the boiling process visible throughout
- Parallel coils put a large heating surface into a compact shell
- Shell-side cross section sized for vapour, not just liquid
- Published heat transfer figure allows duty to be checked before ordering
- Full-bore Type B outlet available where vapour load is high
Applications & industries
Where it is specified.
Typical applications
- Vapourising solvent at the base of a distillation column
- Reboiler duty on a glass distillation assembly
- Steam-heated evaporation of corrosive liquids
- Pilot plant and kilo-lab vapourisation duty
Industries served
- Chemical processing
- Pharmaceutical
- Fine chemicals & dyes
- Distillation & solvent recovery
- Petrochemical
- Agrochemicals
- Water & effluent treatment
Technical data
Specification for Boiler.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | Coil boiler (vapouriser) in glass shell |
|---|---|
| Construction | Number of parallel coils fused in a glass shell |
| Heating medium | Steam through the coil |
| Maximum steam pressure | 3.5 bar, equivalent to 147 °C |
| Average heat transfer | 350 Kcal/m²hr·°C at 3.5 bar steam pressure |
| Free actual H.T.A. | 0.15 m² to 1.30 m² |
| Shell size range | DN 100 to DN 300 |
| Cross area | 40 cm² to 330 cm² |
| Jacket capacity | 2 to 40 litres |
| Catalogue reference | LSHEB series |
| Cat. Ref. | DN | DN1 | DN2 | L | L1 | Type | Free actual H.T.A. (m²) | Cross area (cm²) | Jacket cap. (litre) |
|---|---|---|---|---|---|---|---|---|---|
| LSHEB4 | 100 | 25 | 25 | 375 | 100 | A | 0.15 | 40 | 2 |
| LSHEB4/4 | 100 | 100 | 25 | 400 | 100 | B | 0.15 | 40 | 3 |
| LSHEB6 | 150 | 40 | 25 | 450 | 100 | A | 0.35 | 50 | 5 |
| LSHEB6/6 | 150 | 150 | 25 | 500 | 100 | B | 0.35 | 50 | 7 |
| LSHEB9 | 225 | 40 | 25 | 700 | 100 | A | 1.00 | 150 | 16 |
| LSHEB9/9 | 225 | 225 | 25 | 700 | 100 | B | 1.00 | 180 | 20 |
| LSHEB12/12 | 300 | 300 | 25 | 700 | 125 | B | 1.30 | 330 | 40 |
All dimensions in mm, transcribed from the catalogue page and transposed to one row per model. Type A carries a reduced DN1 side connection; Type B carries a full-bore DN1 equal to the shell. Heat transfer area is the free actual figure printed in the catalogue.
Available on request
- Type A build — reduced DN1 side connection
- Type B build — full-bore DN1 matching the shell
FAQ
Questions we are asked about this item.
3.5 bar maximum, which the catalogue notes is equivalent to a temperature of 147 °C. The published heat transfer figure of 350 Kcal/m²hr·°C is quoted at that same pressure.
Because a boiler has to carry vapour away from the shell side as fast as it is generated. The catalogue states the coils are designed to provide a bigger cross section in the shell side compared to a condenser for exactly this reason.
The DN1 connection. Type A has a reduced side connection — 25 mm on LSHEB4, 40 mm on LSHEB6 and LSHEB9. Type B has a full-bore DN1 equal to the shell, which suits a higher vapour load.
On duty. Take the average heat transfer as 350 Kcal/m²hr·°C at 3.5 bar steam, and pick the free actual H.T.A. that meets it — 0.15 m² at the smallest to 1.30 m² on LSHEB12/12. Send us the vapourisation rate and we will confirm.
Enquiry
Tell us your line size — we'll confirm the spec.
Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.
Not sure which spec fits your process?
Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.
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