Heat Exchanger
Advantage
Features:
- High heat transfer efficiency, good temperature controllability:
Special fin structure, the fluid to form a strong turbulence, thus effectively reducing the thermal resistance,improve heat transfer efficiency. - Compact:Heat transfer area density can be as high as 17300 ㎡ / m³
- Lightweight, practical good:Fin thin, but the structure is very compact, small size, and available aluminum alloy which is lightweight and low cost.
- High reliability:Full brazing structure, eliminate the possibility of leakage. Meanwhile, both the fin hea transfer surface and the supporting role, it is high intensity.
WorkShop
| Working life: | 10,000 Hours | Voltage: | / |
| Color: | Silver and black | Application: | Machinery |
| Seal Process: | Brazed | Certification: | ISO9001and TUV |
| Working Pressure: | 2-40bar | Warranty: | 2years |
| Item Name: | Customized Aluminum Heat Exchanger | Fin Type: | Perforated,Wavy,Serrated,plain,louvered fin |
| Power: | 2Kw-400Kw | Structure: | Bar and Plate |
| Payment: | LC, WU and T/T | Port: | Ningbo/Shanghai |
| Medium | Air. oil. water. wind | |||
| Fin types | application | features | Width series | |
| Fins | BW(wavy-fin) | external fin | Widely used(better heat emission capacity) | 2.0mm,2.5mm, |
| 3.0mm,3.8mm | ||||
| 4.7mm,5.6mm, | ||||
| JC(serrated-fin) | Internal&external fin | Widely used(better heat emission capacity);large friction resistance | 6.5mm,8.0mm, | |
| DK(perforated-fin) | Internal fin | 9.0mm,9.5mm, | ||
| PZ(plain-fin) | Internal&external fin | Used in construction machinery | 10.3mm,11.3mm | |
| BY(Louvered-fin) | External fin | 11.7mm,12mm | ||
| Veriety of heat exchangers | ||||
| Classification According to the Medium | 1)Oil cooer; water radiater; air cooler; intercooler; | |||
| 2)Combined oil-water cooer; combined oil-air cooer; combined water-air cooler; combined oil-air-water cooler | ||||
| 3)air separator; condensator evaporator | ||||
| Classification according to the application | For engineer machinery(excavator,loader,bulldozer,roller,drilling,crane,paver,scraper and so on) | |||
| For compressor(screw compressor and reciprocating compressor) | ||||
| For chemistry industry | ||||
| For petroleum chemical industry | ||||
| For automobile | ||||
| For watercraft,marine engineering | ||||
| For offshore engineering | ||||
| For steel industry | ||||
| For HVAC | ||||
| For textile industry | ||||
How to select the right heat exchanger
Brazed plate-fin heat exchangers are used as the aftercooler and the oil cooler on screw compressors. They are chosen by heat load, by the approach temperature you can live with, and by the medium.
- Heat load — roughly the shaft power of the compressor, split between the oil cooler and the aftercooler. Size on the hot day, not on the average.
- Approach temperature — the closer the outlet air is to the cooling medium, the larger the exchanger. A 5 °C approach is normal for air; chasing 2 °C doubles the size.
- Construction — full brazed aluminium for air and oil; stainless steel where the medium is aggressive. There are no gaskets, so the only leak path is a cracked core.
- Air side — keep the fin pitch in mind: a wide pitch tolerates dust, a fine pitch cools better but blocks faster in a dirty plant room.
Installation and maintenance
- Mount so that both fluids flow counter-current, and leave the drain point at the lowest corner — condensate that cannot leave eventually blocks the air side.
- Leave access for cleaning on the air side. A cooler that has to be removed to be cleaned is a cooler that never gets cleaned.
- Support the exchanger on its frame, not on the pipework: a brazed core cracks at the port if the pipes carry its weight.
- In freezing conditions, drain the water side or add glycol — a frozen core splits and cannot be repaired.
Heat exchanger FAQ
How do I know the heat exchanger is fouled?
The approach temperature rises: the air outlet gets closer to the cooling water or ambient temperature than it used to, or the compressor starts tripping on high discharge temperature at the same load. Check the air-side fins first, then the water side.
Can the core be repaired if it leaks?
A brazed aluminium core is not repairable in the field — it has to be replaced. That is why the mounting and the water quality matter more than they look.
Do you supply the exchanger as a spare for a specific machine?
Yes. Send the machine model, the working pressure and the connection sizes, and we will match the cooler rather than sell you the nearest size.