Plate Heat Exchanger

Indirect heat exchanger is that where both medium are separated by a wall through which heat is transferred. Indirect heat exchangers are available in several main types such as Plate, Shell, Tube, Spiral, etc. In most cases the plate type is the most efficient heat exchanger. VJIKKS ENGG POWER (M) SDN BHD is a well-known Manufacturer, Exporter and Supplier of quality Plate Heat Exchanger. Plate Heat Exchanger offers the best solution to thermal problems, giving the widest pressure and temperature limits within the constraint of current equipment. With a Plate Heat Exchanger, the heat penetrates the surface, which separates the hot medium from the cold one very easily. It is therefore possible to heat or cool fluids or gases which have minimal energy levels. One of the very efficient heat exchangers is the Plate Heat Exchanger. It is composed of multiple, thin, slightly-separated plates that have very large surface areas and fluid flow passages for heat transfer. This stacked-plate arrangement can be more effective, in a given space, than the shell and tube heat exchanger. Advances in gasket and brazing technology have made the Plate Heat Exchanger increasingly practical. In HVAC applications, large heat exchangers of this type are called plate-and-frame; when used in open loops, these heat exchangers are normally of the gasketed type to allow periodic disassembly, cleaning, and inspection. There are many types of permanently-bonded plate heat exchangers such as dip-brazed and vacuum-brazed plate varieties and they are often specified for closed-loop applications such as refrigeration. Plate Heat Exchanger also differs in the type of plates that are used, and the configurations of those plates. Some plates may be stamped with "chevron" or other patterns, where others may have machined fins and/or grooves.

• Thin material for the heat transfer surface - this gives optimum heat transfer, since the heat only has to penetrate thin material.
• High turbulence in the medium –this gives a higher convection, which results in efficient heat transfer between the media.
• The high turbulence also gives a self-cleaning effect. Therefore, when compared to the traditional shell and tube heat exchanger, the fouling of the heat transfer surfaces is considerably reduced. This means that the plate heat exchanger can remain in service far longer between cleaning intervals.
• Flexibility - the plate heat exchanger consists of a framework containing several heat transfer plates. It can easily be extended to increase capacity. Furthermore, it is easy to open for the purpose of cleaning. (This only applies to gasketed heat exchangers, and not to brazed units.)
• Variable thermal length - most of the plate heat exchangers manufactured by us are available with two different pressing patterns. When the plate has a narrow pattern, the pressure drop is higher and the heat exchanger is more effective. When the plate has a wide pattern, the pressure drop is smaller and the heat transfer coefficient is accordingly somewhat smaller.