Semi Welded Heat Exchanger – ParaWeld

Application areas:

It has wide use in heat transfer of single and two phase fluids in refrigeration, chemical, petrochemical and industrial markets. Welded plates are designed for the use of aggressive liquids.

General Applications:

• Flooded Evaporators
• Direct Expansion Evaporators
• Liquid Cooled Condensers
• Economizers
• Desuperheaters
• Subcoolers
• Oil coolers

Material:

Plates: AISI 316, AISI 304, Titanium, C2000 and many alloys
Gaskets: NBR, EPDM, FKM, Paramine and others
Temperature: Rubber gaskets: -45 _250 °C
Pressure: 0 – 35 bar
Heat transfer area / Capacity: Until 2000 m2
Maintenance: Welded side: Cleaning with CIP system Sealed side: Full access for cleaning and inspection.

Advantages:

• High efficiency due to counter flow
• Reducing the risk of leakage
• Thermal stress endurance
• Compact and space-saving design
• Combining different gasket materials for cost-effectiveness solutions

ParaWeld Series Plate Heat Exchanger

Maximum Performance, Minimal Space and Low Volume Hold up.

The heat transfer plates are the heart of the APV ParaWeld heat exchanger providing reliability, efficiency and economy of operation. These plates are stamped in a corrugated design pattern to induce turbulent flow, then laser welded together in pairs at the flow perimeter, minimizing liquid bypass at the edges via a patented plate design system. The refrigerant flows through this welded plate channel and the fluid to be cooled is in the gasketed channel.

The only gasketing in contact with the refrigerant are the circular port rings at the plate entrance and exit. Since the plates are welded pairs, the heat exchanger can easily be expanded should your duty requirements change in the future. Simply add more plate pairs to increase the refrigeration tonnage.

The plates are pressed and laser welded in our Goldsboro, NC, USA facility.

APV stocks 304ss, 316ss and titanium plate materials for faster delivery of new units and/or for spare parts.

Plates are also available in other alloys such as high nickel, super austenitic steels, etc, if required.

Gasket materials include neoprene and a selection of NBR’s and EPDM’s.

FDA compliant gaskets are also available for certain direct product chilling duties.

Welded pairs are aligned in a rigid, polyurethane painted carbon steel frame through the use of a top carrying bar and bottom guide bar as illustrated in figure 7. Plates have an integral hanging eye to facilitate installation and maintain proper plate alignment and support within the frame.