HeatEx Direct

Plate-Shell Heat Exchanger (PSHE)

A plate-shell heat exchanger encloses a welded corrugated plate bundle inside a pressure shell. The design combines high plate-side heat-transfer efficiency with the pressure containment and nozzle flexibility of a shell structure. It is used for LNG liquefaction and regasification, BOG reliquefaction, oil and gas, chemical plants, high-temperature reaction heat recovery, marine service, flue-gas heat recovery, and other harsh process duties.

Petrochemical
Marine
Energy
Chemical Processing
Power Generation

Product Details

Why PSHE

PSHE is selected when plate heat-transfer efficiency is needed but the process pressure, temperature, vibration, or nozzle arrangement requires a pressure shell.

Engineering checks

A PSHE project should confirm pressure vessel code, shell-side design, welded plate bundle inspection, thermal expansion, vibration, nozzle loads, and cleaning or replacement access.

Key Advantages

Welded plate bundle delivers high heat-transfer efficiency in high-pressure service.
Pressure shell supports duties beyond conventional gasketed plate exchanger limits.
Compact size helps reduce equipment footprint in LNG, oil and gas, and chemical plants.
Corrugated plates provide turbulence and efficient heat recovery at close temperature approaches.
Shell and nozzle layout can be engineered around pressure vessel codes, vibration, thermal stress, and cleaning method.
Suitable for high-pressure process heat recovery, LNG service, marine service, and severe chemical duties.

Technical Specifications

Plate bundleWelded corrugated plate bundle installed inside a pressure shell
Design checksPressure vessel code, vibration, thermal stress, nozzle load, inspection access, and cleaning method
Shell pressureHigh-pressure service above 10 MPa when designed for the duty
Flow arrangementPlate-side and shell-side flow paths with project-specific nozzle orientation
Temperature serviceCan be applied to 400°C reaction-product heat recovery when materials and design allow
Typical applicationsLNG liquefaction/regasification, BOG reliquefaction, oil and gas, chemical plants, marine service, flue-gas heat recovery, and high-pressure process heat exchange

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