The stainless steel metal plates of the plate heat exchanger are inserted and assembled in a mutually inverted mode, so that a mesh contact can be formed so that the fluid in the channel becomes a mesh fluid. The heat exchange fluid flows from one end to the other end as a one-way circulation loop, or reversely forms a diagonal flow to achieve the purpose of heat transfer. The plate heat exchanger is a combination of gaskets, stainless steel plates and frame bolts. Its working principle is mainly separated by gaskets and flows through their respective areas. So what is the material choice for the plate heat exchanger gasket?
(1) Oil-water cooler
Generally, NBR (NBR) is used for oil-water exchange, and the temperature resistance is below 110°C. If it exceeds 120°C and is less than 150°C, hydrogenated nitrile (HNBR) must be used.
(2) Water-to-water heat exchanger
For the working conditions of the water-to-water heat exchanger, we can use NBR and EPDM (ethylene propylene diene monomer) materials. Under normal circumstances, we recommend the use of EPDM materials, whose temperature resistance is better than NBR.
(3) Steam water heat exchanger
Generally, EPDM (EPDM) is directly selected for the working condition of steam. The temperature of the steam should not exceed 160℃ to avoid swelling the rubber pad.