plate and shell heat exchanger

The Region’s Trusted Distributor of Plate & Shell Heat Exchangers

Plate and shell heat exchangers (PSHE) combine the pressure and temperature capabilities of a cylindrical shell with the excellent heat transfer performance of a plate heat exchanger. The round plates ensure an even distribution of mechanical loads, without the stress concentrations that occur in the corners of rectangular plates.

The design of the plate and shell heat exchanger is similar to that of a radiator or water heater, but it differs in that the water passes through two separate circuits—one for heating and one for cooling.

The shell side of the plate and shell heat exchanger contains a series of tubes with fins that are submerged in an oil-based fluid. This fluid circulates throughout the system, absorbing and releasing heat from the tubes as needed. This process also helps to keep the tubes from overheating by transferring excess heat into the oil-based fluid as it flows through them.

The plates on the other side of this device are made out of either steel or aluminum alloy material which serves as both an insulator and a conductor. They also contain small holes or tubes through which air can pass through so as not to overheat during use; however, these holes should be kept clear at all times so as not to damage any other parts within their reach (i.e., heating coils).

PSHE Structure

plate and shell heat exchanger structure

Working Principle

plate and shell heat exchanger working principle

The gaps between the corrugated plates are forming flow channels which are flowed through alternately by a primary and secondary media. Flow directors at shell side prevent a bypass – flow between shell and plate pack. The flow direction of both media can be arranged as counter-flow, co-current or cross-flow. The heat is transferred via the corrugated plates. When one or both media are evaporating or condensing partly or completely, it is called a two-phase application.

By means of deflections the media at plate side and shell side as well can be led in multi passes. This way the thermal length is increasing. Our plate & shell  heat exchangers are available in five sizes and with different corrugation patterns, i. e. with different corrugation angles and pressing depths.

H-plates allow high heat transfer rates caused by a high turbulent flow. L-plates are used in applications which are optimised for a minimal pressure loss. In gas / gas – applications or when the media is contaminated with solids G-plates often are used, which have larger channel cross-sections.

Features

  • Operating temperature: -200 to 500 °C

  • Operating pressure: -1 to 400 bar (g)

  • Liquid hold-up varies from 3 to 1,000 litres per pressure chamber.

  • Dynamic viscosity up to 8,000 mPa s

  • Flexible shell design

  • Plate thickness from 0.6 to 1.25 mm with H-, L- or G- plates.

  • Weld thickness up to 3.5x higher than plate thickness.

  • Plate design with self-cleaning effect

  • Wide range of plate materials provides high corrosion resistance.

  • Nozzle sizes: DN 20 (3/4“) to DN 1000 (40”)

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Configurations

plate and shell heat exchanger counter flow

Counter Flow

The most common form of flow configuration.

plate and shell heat exchanger cross flow

Cross Flow

For a reduced resistance on the primary and secondary side.

plate and shell heat exchanger co-current flow

Co-current Flow

For maximum temperature differences at the inlet, or to avoid temperature crossing.

plate and shell heat exchanger inlet and outlet at both ends

Inlet and outlet on both ends
For large volumetric flows on the plate side.

plate and shell heat exchanger plate side deflection

Plate side deflection
For large differences in volumetric flow rates between plate and shell side.

plate and shell heat exchanger - shell and plate side deflection

Shell and Plate side deflection
For optimising the pressure loss and heat transfer on both sides.

plate and shell heat exchanger - Plates with H-, L- and G- corrugation

Plates with H-, L- and G- corrugation

plate and shell heat exchanger H plates

H-plates allow high heat transfer rates caused by a high turbulent flow. L-plates are used in applications which are optimised for a minimal pressure loss, or hydraulically limited.

plate and shell heat exchanger - In gas / gas – applications

In gas / gas – applications or when the media is contaminated with solids G-plates are often used, which has a larger cross-sectional area.

Plate & Shell Heat Exchanger Range

Fully-welded HE

Fully-welded HE, for liquid-liquid applications

Refrigerant evaporator, with steam dome

Refrigerant evaporator, with steam dome

Partial evaporator, vertical, 100 bar

Partial evaporator, vertical, 100 bar

Kettle-type – evaporator

Kettle-type – evaporator

Vacuum evaporator

Vacuum evaporator

Air cooler, openable, with condensate separation

Air cooler, openable, with condensate separation

Gas cooler, cross-flow

Gas cooler, cross-flow

Partial condenser, vacuum

Partial condenser, vacuum

Partial condenser, vacuum

Partial condenser, vacuum

Flooded evaporator with external droplet separation

Flooded evaporator with external droplet separation

Plate & Shell Heat Exchanger Range

Fully-welded HE, for liquid-liquid applications

Refrigerant evaporator, with steam dome

Partial evaporator, vertical, 100 bar

Kettle-type – evaporator

Vacuum evaporator

Air cooler, openable, with condensate separation

Gas cooler, cross-flow

Partial condenser, vacuum

Partial condenser, vacuum

Flooded evaporator with external droplet separation

Gallery

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