| Customization: | Available |
|---|---|
| Customized: | Customized |
| Certification: | CE, ISO, RoHS |
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PHE Desgin
We desgin the customized plate heat exchanger according to working data by the software.
Our plate heat exchangers are equivalent with Alfa and VICARB.
Mould Desgin
We can desgin the gasket and plate mould for plate heat exchanger as customer's sample in a short time.The gasket mould usually will take 2 weeks, plate mould in 1 month
PHE Plate
We can supply PHE replacement plates for the majority PHE brand, the plates can 100% replace with the original one, they are already widely used in after market
We have more than twenty different rubber componds for
the most of PHE application.
The gasket models are for the most of PHE brand,can 100% replace with the original one.
The plate cleaning service is for refurbishing the used plate.
Power washing and Chemical inmmersion can make the old plate like new.
Plate Dye Checking
Plate dye penstrant checking is the most important test after procuction.
We test 15% of all ordered plates to insure the plates are no dmange.
Frame Plate
We supply frame plate as Alfa, GEA , APV , Sondex ,Tranter, Vicarb, or according to customer 's drawing.
Others PHE Parts
We also supply the others plate heat exchanger spare parts, such as tightening bolts, nuts,guiding bar,frames, collars,etc.
Gasket Plate Heat Exchanger
Standard Disgin
The plate heat exchanger consists of a pack of corrugated metal plates with portholes for the passage of the two fluids between which heat transfer will take place. The plate pack is assembled between a fix frame plate and a movable pressure plate and compressed by tightening bolts. The plates are fitted with a gasket which seals the inter plate channel and directs the fluids into alternate channels. The number of plates is determined by the flow rate, physical properties of the fluids, pressure drop and temperature program. The plate corrugations promote fluid turbulence and support the plates against differential pressure. The frame plate and the pressure plate are suspended from an upper carrying bar and located by a lower guiding bar, both of which are fixed to a support column. Connections are located in the frame plate or, if either or both fluids make more than a single pass within the unit, in the frame and pressure plates.
Working principle
Channels are formed between the plates and the corner ports are arranged so that the two media flow through alternate channels. The heat is transferred through the plate between the channels, and complete counter-current flow is created for highest possible efficiency. The corrugation of the plates provides the passage between the plates, supports each plate against the adjacent one and enhances the turbulence, resulting in efficient heat transfer.
Efficiency and Flexibility
· High heat transfer efficiency
· Easy to repair and cleaning
· Low fouling factor
· Compact structure, lightweight
· Easy to adjust heat transfer surface or plate arrangement
· Small temp. differential
Heat Exchanger Plate
Heat Exchanger Plates are from pressed plates. They are surrounded by a gasket which is fixed either with glue or special clips in a groove. The inlet and outlet opening of the plate is gasketed too, depending of the flow principle. The gaskets are designed to prevent contact between the primary and secondary medium in case of a gasket leakage.
For single pass Plate Heat Exchangers start and flow plates are often 4-hole while the end plate is 0-hole.
Plate Material
304 Stainless Steel
This is the lowest cost heat transfer plate material. It has a low corrosion resistance
and is typically available in thickness from 0.5mm up to 0.7mm. This type of heat transfer plate
is typically used on HVAC applications.
316 Stainless Steel
This is the most common heat transfer plate material and is used in many applications.
316 stainless steel has a high corrosion resistance and is typically available in thickness
from 0.5mm up to 0.7mm.
Titanium
This has a very high resistance to chemical attack including most acids, chlorides and chlorine chemicals. Titanium is usually available in thicknesses from 0.5mm up to 0.7mm
Other materials, such as Hastelloy C-276,254 SMO, are available on request for special applications.
Plate Heat Exchanger Gasket
Gaskets are made of one piece. Normally, they are made from elastomer. Each gaskets is designed to fit with their application (min. and max. temperature, max. pressure, medium and miscellaneous conditions). Beside the conservative fixation - glueing the gaskets onto the plates - more and more "Clip-on" gaskets are common Regarding the glued gaskets a special glue will be applied only into a groove where the gasket will be insert and pressed on.
The start and end gasket is sealed on all openings. For one pass (and ports on the stationary frame plate) the gaskets between the second and last channel plate have no closed internal ring on the upper and lower part. In case that the upper and lower right internal ring is open the medium will flow "parallel". In case that the upper right and lower left internal ring is open the medium will flow "diagonal".
Gasket Material
| Material | Temperature | Apply Medium |
| NBR | -25~110°C | Water ,Industrial & Edible Oil, Salt |
| EPDM | -50~150°C | Hot Water,Vapour,Weak Acid&Base,Ketone. |
| HNBR | -25~150°C | Crude Oil, Sulfocompound, Heat Transfer Oil. |
| VITON | -20~180°C | Vapour,Oil, Strong Acid&Base, Chlorine Acid. |
Standard design
Brazing the stainless steel plates together eliminates the need for sealing gaskets and thick frame plates. As well as holding the plates together at the contact points, the brazing material seals the package. Brazed heat exchangers are brazed at all contact points, ensuring optimal heat transfer efficiency and pressure resistance. The plates are designed to achieve longest possible lifetimes. Since virtually all material is used for heat transfer, the Brazed Plate Heat Exchanger is very compact in size and has a low weight and a low hold-up volume. We offers a flexible design that can be customized to meet customer-specific requirements. The brazed plate heat exchangers ensure the customer the most cost-efficient solution for his heat transfer duties.
Material
The Brazed Plate Heat Exchanger consists of thin corrugated stainless steel plates which are vacuum brazed together using copper as the brazing material. Copper brazed units can be used for numerous of applications. However, for food applications and applications involving aggressive fluids, copper brazed units are not suitable.
Flow principle
The basic flow principle in a brazed heat exchanger for HVAC applications is parallel and current flow to achieve the most efficient heat transfer process. In a single pass design all connections are located on one side of the heat exchanger, making installation very easy.
Evaporator flow principle
The channels formed between the corrugated plates and corners are arranged so that the two media flow through alternate channels, always in opposite directions (counter current flow). The two phase refrigerant (vapor + liquid) enters the bottom left of the exchanger with a vapor quality depending on the operating condition of the plant. Evaporation of the liquid phase takes place inside the channels and some degrees of superheat are always requested, which is the reason why the process is called "dry expansion". In the enclosed evaporator picture the dark and light blue arrows show the location of the refrigerant connections. The water (brine) to be cooled flows counter current in the opposite channel; the dark and light red arrows show the location of the water (brine) connections.
Plate condensers - flow principle
The main components are the same as for the evaporator. The refrigerant enters at top left of the exchanger as hot gas and starts to condense on the surface of the channels until fully condensed, and is then slightly subcooled. The process is called "free condensation". In the enclosed condenser picture the light and dark blue arrows show the location of the brine connections. The refrigerant flows counter current in the opposite channel and is cooled. The light and dark red arrows indicate the locations of the refrigerant connections.
Dual system
The real dual circuit be patented in a solution with diagonal flow is obtained by means of pressed plates. The Brazed Plate Heat Exchanger can be connected with two independent refrigerant circuits. The special design ensures that each refrigerant circuit is in contact with the entire water flow. The main advantage is that at partial load (only one compressor running) water cooling is uniform and performance is maximized.
Multipass
The design options of the brazed heat exchanger are extensive. The heat exchanger can be designed as a multipass unit, different types of connections are available, and there is the option of choosing the location of the connections. We offers a wide range of standard heat exchanger models and sizes, tailor-made for HVAC applications and available from stock. Naturally, customer-specific designs are available on request.
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