Looking for a semi-welded plate heat exchanger? Then JINFAN is just right.
We are a first-class Semi-welded plate heat exchanger manufacturer. A semi-welded plate heat exchanger combines the advantages of both gasket and fully welded designs. It offers a leak-proof solution for handling aggressive fluids, while also providing the flexibility of easy maintenance and cleaning.
Other types of plate heat exchangers
heat exchanger plates and gaskets
The semi welded plate heat exchanger is composed of welded flow channels and conventional flow channels alternately. The welding flow channel is a plate group formed by welding two plates at 180 degrees to each other. Each plate group is sealed with a sealing gasket to form a detachable conventional flow channel. The plate group is assembled between the fixed frame and the movable plate and tightened by tightening the bolts. The corrosive medium flows through the welding flow channel, and the conventional medium flows through the conventional flow channel and complete counter-current flow is created for the highest possible efficiency. The corrugation of the plates provides the passage between the plates, supports each plate against the adjacent one and enhances the turbulence, resulting in efficient heat transfer. This design can increase the turbulence intensity of the medium when it flows through the heat exchanger, improve the heat exchange efficiency and reduce the pressure loss. Even if the medium flow rate in the heat exchanger is very low, a high heat exchange efficiency can be achieved.
The semi welded plate heat exchanger is an ideal heat exchange equipment for corrosive media, especially for the evaporation and condensation of refrigerants such as ammonia and Freon. The semi-welded plate heat exchanger maintains the flexibility of the GPHE type, which is convenient for maintenance and replacement, and plates can be added later according to need. To meet the requirements of different working conditions, JINFAN provides a variety of specifications of high-temperature resistant plates and gaskets. The heat exchanger that meets specific working conditions can also be customized according to your needs. Our professionals are committed to providing customers with efficient and reliable heat transfer solutions.
| Feature | Semi-Welded Type | Gasketed Type | Fully Welded Type |
| Seal Type | The sealing between the plates alternates between laser welds and gaskets | The plates are sealed with gaskets and clamped by frames and bolts | All plates are fully welded together |
| Maintenance | Moderate (gaskets can be replaced) | Easy (plates can be disassembled) | Difficult (cannot be disassembled) |
| Leakage Risk | Low (welded sections) | Moderate (gaskets degrade over time) | Very low (fully welded) |
| Applications | Industrial refrigeration (especially ammonia, CO2 systems), chemical industry, petrochemical industry, oil refining, etc. | HVAC, district heating/cooling, general industrial cooling/heating, food and beverage, marine, light chemicals | High temperature and pressure, highly corrosive media, hazardous chemicals, oil refining, petrochemical, gas processing, etc. |
| Cost | Higher than gasketed units | Lower cost | Highest due to complexity |
| Pressure & Temperature Tolerance | Moderate | Moderate | High |
Due to the counterflow or crossflow design of the plate heat exchanger, its heat transfer coefficient is 3-5 times higher than that of the traditional tube heat exchanger. Compared with the fully welded PHE type, it can be more flexibly adjusted according to the working conditions, and the detachable design is easy to clean and maintain. Because one channel is welded and sealed, it can withstand higher pressure than the gasket type.
| Plate Material | Suitable Media | ||||||
| Stainless Steel(304/316) | Pure Water, River Water, Edible Oil, Mineral Oil | ||||||
| Ti, Ti-Pd | Seawater, Brine, Salt Substance | ||||||
| 20Cr,18Ni,6Mo(254MO) | Dilute Sulfuric Acid, Dilute Salt Substance Aqueous Solution, Inorganic Aqueous Solution | ||||||
| Ni | High Temperature, High Density Caustic Soda | ||||||
| Hastelloy(C276,D205,B2G) | Concentrated Sulfuric Acid, Hydrochloric Acid, Phosphoric Acid | ||||||
| Gasket Material | Operating Temperature | Suitable Media | |||||
| NBR | -20℃-+110℃ | Water, sea water, mineral oil, Salt, Brine | |||||
| EPDM | -50℃-+150℃ | Hot water steam, Acid, Alkali | |||||
| HNBR | -15℃-+160℃ | High temperature, mineral oil, water | |||||
| VITONA/VITONG/FKM | -35℃-+180℃ | High temperature, high resistance, strong oxidant, oil, acid, alkali, etc | |||||
All semi-welded plate heat exchangers are fully tested before leaving the JINFAN factory.
1.Designing
2.Process Plant
3.Warehouse
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