Plate heat exchangers.

Plate heat exchangers are ideal for applications where the fluids have relatively low viscosity with no particles. Also they are an ideal choice where there is a close approach between product outlet temperature and service inlet temperature. Plate heat exchangers consist of thin, corrugated plates which are gasketted or Cu brazed. The plates are tightened into a plate pack inside a frame, with product in alternate channels, and service fluid in between product channels.

The compactly designed HRS plate heat exchangers range is of a high quality build and is engineered for easy inspection. The units feature stainless steel AISI 304 / 316 plates and EPDM gaskets as standard, with other materials available dependent on the processing media. The gaskets are arranged so that the two media are directed into the alternate channels created by the plates. A double seal arrangement around the two ports ensures that if fluid leaks it passes through the interspace direct into the atmosphere, avoiding cross contamination.

In the HRS plate heat exchanger, the plate pack consists of a number of herringbone patterned, pressed heat transfer plates. These are assembled in an inverse formation to create two sets of parallel channels, one for each liquid. Since the herringbone patterns point in opposite directions a large number of points of support are achieved, creating a lattice in each channel. This provides a high level of turbulence, which in turn leads to an elevated rate of heat transfer.

All HRS plate heat exchangers are calculated to obtain the correct thermal length for the heat transfer duty required, within specific parameters. Two types of thermal length plates, high and low theta, are available so that unit sizes can be optimized across a spectrum of duties. By mixing the two types of theta plate, the most cost-effective solution can be provided. HRS plate heat exchangers are also of a very flexible design so that multi-section units consisting of two or more plate packs separated by intermediate pressure plates or C-plates are possible.

Typical applications:

• Heating
• Steam heating
• Cooling
• Heat recovery