Plate Heat Exchanger

Plate heat exchangers consist of body plate gaskets and suspension systems. Plates are made of materials such as AISI 316, AISI 304, Titanium, 904L, and SMO. Gaskets are made from materials such as NBR, EPDM, VITON, TEFLON, and HYNBR.

Another important part of plate heat exchangers, as important as the plates and gaskets, is the body system. The body system consists of front pressing plate, back pressing plate, upper suspension rod, lower alignment rod, support foot, and stud sets. The materials for pressing plates are selected according to the needs of the project, such as St-37, St-52 P355GH, P265 GH, and AISI 304 stainless.

In plate heat exchangers that operate in places where external corrosion is high, the upper suspension rod, lower suspension rod, foot, and stud sets are coated with hot-dip galvanized coating to provide surface protection with zinc-containing primer.

In Brazed Plate Heat Exchangers, thin copper plates are placed between each plate gap. These copper plates are melted at high temperatures in vacuum furnaces and placed along the welding channels between the heat exchanger plates. This provides direction to the fluid flow inside the exchanger and ensures tightness.

Brazed heat exchangers are also used in applications where gasket strength is limited. Brazed Plate Heat Exchangers are widely used as condensers and evaporators in cooling units, for oil cooling in hydraulic machines, for pasteurization in the food industry, and for producing hot water from steam.

Double Wall Plate Heat Exchangers are preferred in applications where mixing of two fluids is not desirable.  Double Wall Plate Heat Exchangers are formed by placing pairs adjacent to each other and functioning as a single plate. Since there is space between the two plates, when possible plate fractures occur, liquids are guaranteed to leak outside the environment, rather than mixing with other fluids. Double-Wall Heat Exchangers are particularly preferred in chemistry, pharmaceuticals, food, where the mixing of fluids involves a high risk.

Semi-Welded Plate Heat Exchangers are preferred for applications in which two luids require different types of gaskets. For each luid requires different gaskets in steam, oil, ammonia gas, and water applications. Viton Gaskets are used to heat water with high-pressure steam. Telon gaskets are used for the cooling and heating of chemical liquids where conventional gasket strength is not suitable. In such industrial applications, viton and telon gaskets are only used on mandatory circuits, so low-cost gaskets can also be used on other circuits. Thus, the initial investment costs of the use of semi-welded heat exchangers for industrial applications are reduced to a reasonable level.

Semi-welded heat exchangers are used as evaporator, condenser and desuperheater in the refrigeration industry. In particular in food storage facilities where there is a need for high-capacity cooling, semi-welded heat exchangers take up less space than shell-tube heat exchangers and provide a close approximation of temperature with their high heat transfer capability.

In particular, in the cooling industry, energy recovery is achieved by applying desuperheaters. The refrigerating gas from the compressor is in the super-heating phase, first entering the condensing saturated phase, and then condensing.

In applications of desuperheating, the semi-welded heat exchanger provides heat recovery during the transition from superheating to saturated.

Free Flow Plate Heat Exchangers are gasketed plate heat exchangers with a plate-channel structure specially designed to provide heat transfer for high viscosity liquid that contains undissolved solids.  free flow plate heat exchangers are characterized by a wide range of products with a diameter of DN 25 to DN400.

The main difference of wide-range plate heat exchangers from traditional fish bone plate heat exchangers is that the heat exchanger increases the resistance of the heat exchanger against fouling by ensuring that the fluid moves through a perpendicular channel from a fixed gap while heat transfer takes place.

These heat exchangers ensure that continuous operation of the system during production is ensured because of the long period of fouling in the sector where production takes place at a certain period, such as the sugar process.