Application and principle of brazed plate heat exchanger in production

The working principle of the brazed plate heat exchanger:The medium flows in the flow channel composed of corrugated plates. The medium in the adjacent flow channel with different temperatures carries out heat exchange through the plates. The corrugated plates composed of the flow channel make the fluid turbulent and improve the heat exchange efficiency.

Brazed plate heat exchanger application field:

District heating 

1. module manufacturer 
2. installation project 
3. wholesaler 
4. district heating network

OEM Customer 

1. Boiler Manufacturer 
2. Air Dryer Manufacturer 
3. Engine manufacturer

Refrigeration 

1. coolers and pump manufacturers 
2. agent 
3. installation works

Others 

1. Air conditioning applications 
2. Oil cooling systems 
3. Other industrial applications
4. Condenser
   

Manufacturing principle of brazed plate heat exchanger: 

The plate is formed by coil cutting and pressing; Brazing material (copper, nickel or stainless steel) by coil cutting stamping; Separate the plate and brazing material; A sheet bag is formed after the plate and filler metal are installed. The installation plate package, the frame plate, the pressure plate and the nozzle pre-installation products are put into the vacuum brazing furnace for high temperature vacuum brazing; The brazing material gathers at the contact point between the plates after melting at high temperature; When the product is cooled, a high-strength brazing structure is formed at the contact point of the plate.

Standard materials and typical uses
AISI 304  (equivalent to 1Cr18Ni9Ti)

• Typically in clean water-water duties
• Example, up to 50 ppm chlorides at 50°C

• Typically in water-water duties
• Example, up to 250 ppm chlorides at 50°C

• Many uses including high-chloride water-water duties
• Example, up to 6000 ppm chlorides at 50°C

• Most frequent use is for sea water (3.5% chlorides)
• Example, up to 130°C in sea water

• Most frequent use is for concentrated sulphuric acid up to 90°C

Standard materials and thicknesses
AISI 304 (stainless steel)

• Usually 0.4 or 0.5 mm thickness
• Cheapest possible solution

• Always 0.5 and 0.6 mm
• Some with thicker plates (high-pressure applications)

• Usually in 0.6 mm to allow stock-keeping

• Always 0.5 and 0.6 mm
• Some with thicker plates (high-pressure applications)
• Some PHEs with 0.4 mm (low-pressure applications)

• Usually in 0.6 mm to allow stock-keeping

Compared with traditional brazed plate heat exchangers, brazed plate heat exchangers have high weak heat transfer efficiency, and where the structure is not normally tight and light, it can be easily installed in a space limited location, thereby reducing the components of the entire system, saving operating costs, and providing customers with greater benefits. Brazed plate heat exchanger is used as condenser and evaporator.