The plate and shell heat exchanger consists of a set of laser (and plasma arc) welded corrugated plates placed into the shell, replacing the heat exchange tubes of the original shell and tube heat exchanger, and using the corrugated plate set as the heat transfer element for heat exchange. device.
The plate and shell heat exchanger is composed of a corrugated plate group and a shell. It has the advantages of high heat exchange efficiency, small end temperature difference, high temperature and high pressure resistance, good sealing performance, low pressure drop, space saving, safety and reliability, and compact structure. , is a new type of heat exchanger that combines the advantages of plate heat exchangers and shell and tube heat exchangers. It is widely used in refrigeration, oil refining, chemical industry, medicine, food, beverage, beer, metallurgy, electric power, environmental protection, oil cooler and other industrial fields.

1. Compact structure, small size, easier for maintenance and service
2. Unique herringbone corrugated design with extremely high thermal conductivity
3. Low volume, small resistance loss and small heat loss
4. Laser or plasma welding, better sealing
5. Wide operating pressure, up to 70bar
6. Excellent material plate (AISI304/316L), stronger corrosion resistance

Refrigeration industry applications:
Polytech’s plate and shell heat exchangers can be used as evaporators, condensers, condensing evaporators, superheated evaporators, oil coolers, etc., bringing many benefits to advanced refrigeration applications. Polytech plate and shell heat exchangers are efficient, durable and versatile. It is compact and requires only a small refrigerant charge. It is suitable for all refrigerants, especially the natural refrigerants ammonia and carbon dioxide.

Energy and marine applications:
Polytech plate and shell heat exchangers are more compact than traditional shell and tube heat exchangers. It has a wide temperature operating range and pressure operating range, which can effectively resist thermal shock and pressure shock; at the same time, its fully welded structure without sealing gasket makes it basically free of any maintenance costs. Plate and shell heat exchangers are therefore suitable for many applications in the energy technology and shipbuilding industries.

Chemical and petrochemical applications:
Polytech plate and shell heat exchangers combine the advantages of traditional plate and shell heat exchangers and can be widely used and qualified for all application positions of traditional shell and tube heat exchanger equipment. It has the high temperature resistance and high pressure resistance of a shell and tube heat exchanger; its fully welded and unsealed structure has a wide range of process media applicability; when precious metal materials are specified to be used, its high efficiency and compactness mean that the precious metal materials are effective Take advantage and save costs.

Pharmaceutical and food industry applications
Polytech plate and shell heat exchangers are suitable for liquid-liquid, vapor-liquid, gas-gas and other heat exchange processes, and can also be used as condensers, etc. The unique wide flow channel design is especially suitable for heating and cooling process requirements of process media containing a large amount of solid particles and fiber suspensions.