Semi-welded Plate Heat Exchanger | EOU Heat Exchange
EOU® semi-welded plate heat exchanger adopts half-welded structure. One side is fully welded for corrosive or high-pressure medium, the other side uses gasket for easy maintenance. It is widely used in chemical, refrigeration and HVAC industries.
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Product Overview
EOU® Semi-welded Plate Heat Exchanger is a hybrid plate heat exchanger design. Alternating plate channels are welded together, while the other side relies on gaskets for sealing. The welded passage handles corrosive, high temperature or high pressure media, and the gasket side can be disassembled for inspection and cleaning. It balances sealing safety and maintainability, solving the limitation of fully welded and traditional gasket plate heat exchangers.
Working Principle
Corrugated plates are paired and welded into plate packs. One fluid flows inside the welded plate passages without touching rubber gaskets. The other fluid flows through gasket-sealed channels. Corrugations create strong turbulent flow to achieve high heat transfer efficiency. The gasket side can be opened for cleaning and plate replacement, ideal when one medium is corrosive and the other is clean.
Key Advantages
- Semi-welded Hybrid Structure：One side welded for harsh medium, gasket side for easy disassembly and maintenance.
- Resist Corrosion & High Pressure：Welded channel avoids gasket erosion, suitable for aggressive chemical media.
- High Heat Transfer Efficiency：Corrugated plate enhances turbulence, small temperature difference heat transfer available.
- Flexible Maintenance：Gasket side can be opened to clean sediment and replace plates or gaskets.
- Multiple Material Selection：304, 316L, Titanium, Hastelloy available for plate material.
- Compact Size：Small footprint compared with shell and tube heat exchanger under same heat load.
Technical Parameters
| Design Temperature Range | -50℃ ~ 350℃ |
| Design Pressure Range | Vacuum ~ 40 bar |
| Heat Transfer Mode | Liquid-liquid, gas-liquid, evaporation, condensation, waste heat recovery |
| Minimum Approach Temperature | 1℃ |
| Plate Material | 304, 316L, Titanium, Hastelloy, Nickel alloy |
| Gasket Material | NBR, EPDM, Viton, PTFE |
Application Industries
- Chemical Industry：Heat transfer for corrosive chemical solvent, acid and alkali medium.
- Refrigeration & HVAC：Evaporator and condenser for heat pump and refrigeration system.
- Oil & Gas：Cooling and heating for process medium with mild corrosion.
- Pharmaceutical：Heat exchange for corrosive raw material fluid.
- Food Industry：Process heating/cooling with requirement of easy cleaning on one side.
Custom Service
We provide customized thermal design and equipment fabrication according to your working parameters: medium type, flow rate, inlet & outlet temperature, design pressure and connection requirements. Contact our engineering team for quotation and technical solution.