-Plate&Shell-® Heat Exchanger

Vahterus PSHE combines the benefits of Plate & Frame and Shell & Tube heat exchangers. PSHE can either be described as a fully welded, high integrity plate heat exchanger, with no gaskets; or a generic alternative to Shell & Tube, approx. 25% of the footprint, displaying both space and weight benefits.

Benefits of PSHE

• No Gaskets or Brazing
• High Integrity / Total Containment
• Strong and Safe Construction
• Unique Protection and Resistance
  to Thermal and Pressure Cycling
• Thermally Efficient
• Compact and Low Weight
• Flexible Construction
• Proven, Reliable Technology
• Low Fouling
• Minimal Maintenance Requirement
• Close Approach Temperatures

The -Plate&Shell-® Heat Exchanger is the first of a new generation of heat exchangers developed by Vahterus. At the heart of the PSHE is a fully welded pack of circular plates which is housed within an outer pressure vessel. The PSHE combines the best features of PHE and shell & tube exchangers offering a durable, compact and gasket free solution with high heat transfer, high pressure and high temperature capability.

The -Plate&Shell-® Openable version offers increased flexibility of use by allowing the fully welded platepack to be completely withdrawn from the shell for inspection or cleaning. This is achieved by the use of a flanged and bolted shell construction. The cassette type platepack allows quick and easy removal and refitting thus ensuring that process downtime is kept to a minimum.

The -Plate&Shell-® Compact exchanger has been developed by Vahterus to offer an even more compact unit than the standard PSHE construction. By using a clever system of internal flow directors, it is possible to have all 4 primary and secondary fluid connections on one end of the unit, which significantly reduces the required space.

Vahterus PSHE can be used in many applications, in each instance offering space and weight benefits over traditional shell & tube exchangers:

• Liquid/ liquid
• Liquid/Gas
• Gas/Gas
• Condensers
• Evaporators
• Cascades
• Multi-Phase / Multi-Component Systems
  
  

  Technical Specification

  Maximum Heat Transfer Area
  • 2000 m²/ exchanger
  
  Mechanical Design
  • Full vacuum to 150 bar possible
  • -200 to +900 °C
  

  Main data:

  	Area/plate, m²	Plate side nozzles, DN	Shell side nozzles, DN
  PSHE 2	0.032	25	20-80
  PSHE 3	0.076	50	25-250
  PSHE 4	0.15	80	25-300
  PSHE 5	0.26	100	25-350
  PSHE 6	0.356	125	25-500
  PSHE 7	0.46	150	25-500
  PSHE 9	0.80	200	25-700
  PSHE 14	1.55	300	25-1000
  PRHE 12	1.00	200	25-1000