Brazed plate

Plate heat exchangers

Plate heat exchangers offer exceptional compactness and high heat transfer efficiency, allowing even the most complex B2B heating and cooling systems to be optimised.

Design types

• Brazed plate heat exchangers (BPHE): Compact, resistant to high pressure and maintenance-free. Widely used in heat pumps, chillers and heat substations. Capacity ranges from 1-3 kW to 1500 kW. More: brazed heat exchangers.
• Gasketed plate heat exchangers (GPHE): Flexible solutions with the option of changing capacity by adding plates, easy to open for cleaning. Suited to large industrial sites and district heating, where capacity reaches 10-40 MW. More information: gasketed heat exchangers.

Materials of construction and corrosion resistance

The industry standard for the units we offer is AISI 316L (low carbon) stainless steel. Thanks to its low carbon content it is highly resistant to intergranular corrosion, which is especially important for ensuring the long-term operation of copper-brazed or welded heat exchangers. In specific conditions (swimming pools with salt water, coastal zones, aggressive industrial media), we supply heat exchangers made of titanium to special order.

Represented manufacturers and technologies

• Alfa Laval: Offers the unique AlfaNova series - 100% stainless steel units with patented AlfaFusion technology.
• Danfoss: A wide choice of both BPHE (XB series) and gasketed GPHE models (XG series).
• SWEP: Reliable B-series models and advanced Coresist technology.
• Hexonic: Efficient LB and LC series heat exchangers for various standard and industrial applications.
• Tranter and Kelvion (GEA): World-class manufacturers of GPHE and BPHE systems, offering solutions for heavy industry and the energy sector.

Plate corrugation technology

Heat exchanger performance depends directly on the plate pattern (chevron / herringbone). Choosing a High Θ profile gives very high heat transfer (high flow turbulence), but creates greater hydraulic resistance. A Low Θ profile, on the other hand, has a longer and smoother channel, resulting in a lower pressure drop.

Frequently asked questions (FAQ)

When should I choose a brazed (BPHE) and when a gasketed (GPHE) heat exchanger?
Brazed units (BPHE) are ideal for small and medium systems (up to ~1500 kW) where compactness is required. Gasketed units (GPHE) are chosen for large systems (10-40 MW) where regular cleaning is necessary or capacity expansion is planned.

How do copper-brazed units differ from "Coresist" or "AlfaNova"?
Standard copper-brazed units are suitable for ordinary heating systems. In corrosive media (aggressive tap water, ammonia), copper-free alternatives must be used - Alfa Laval AlfaNova or SWEP Coresist.

Every HVAC heat substation or refrigeration unit requires engineering precision. To make heat transfer as efficient as possible, our specialists carry out a detailed engineering calculation and select units that meet your needs, together with matching insulation. Contact the Amegata.lt team.