Plate and shell heat exchanger

Plate and shell heat exchanger

 Plate and shell heat exchanger

A third type of heat exchanger is a plate and shell heat exchanger, which combines plate heat exchanger with shell and tube heat exchanger technologies. The heart of the heat exchanger contains a fully welded circular plate pack made by pressing and cutting round plates and welding them together. Nozzles carry flow in and out of the platepack (the ‘Plate side’ flowpath). The fully welded platepack is assembled into an outer shell that creates a second flowpath ( the ‘Shell side’). Plate and shell technology offers high heat transfer, high pressure, high operating temperature, uling and close approach temperature. In particular, it does completely without gaskets, which provides security against leakage at high pressures and temperatures.

Sealless and with a heat transfer surface area up to 700 m2, our SIGMASHELL laser-welded plate and shell heat exchangers are ideal for thermal treatment of liquid, vapor, and gas. SIGMASHELL is applicable in all industrial sectors, including chemical and petrochemicals, pharmaceuticals, renewable energies, bio energy, power generation, pulp and paper, steel mills, and coking plants.

ADVANTAGE:

Gireesh heat exchangers of welded plate-and-shell heat exchangers offer ultimate robustness for challenging high pressure process duties. They are designed for high temperatures and high pressures, primarily for clean process fluids. The units deliver efficient heat transfer with a small footprint, which makes them ideal where space is restricted.

  • Small space requirement (only 30% of a traditional tubular heat exchanger)
  • No gaskets
  • Safe operation without leaking
  • High working pressure
  • Small liquid volume
  • Laser welded plates

Features of Plate and Shell Technology:

  • High operating temperatures ranging from -320⁰F to 1500⁰F
  • High pressures of up to 2100 psig
  • Low fouling
  • High heat transfer
  • Compact size
  • Gasket free
  • Available in all current plate materials
  • Shell construction: all-welded or accessible to one or two sides
  • Multi-pass possible for shell and plate side
  • Calculations can be done for counter-current flow, co-current, and cross flow
  • Fishbone corrugation for high and low heat transfer characteristics

Applications

  • Suitable for NH3
  • Evaporators and Condensers
  • Fuel oil heaters
  • Pressure rating: PN16/PN25/PN40
  • From min. temp. -100°C to max temp.: Up to 400°C

Operational limits. 

  • Operating pressures from vacuum to 150 bar
  • Operating temperatures from -200°C to 550°C
  • Viscosities up to 8,000 mPas