Ashrae Journal - December 2008 - 86

New Product Preview Advertising Section Bringing Efﬁciency to Your Process In today’s market, there is a constant need to bring efficiency to every process. APV Paraflow plate heat exchangers are designed to provide maximum efficiency and cost effectiveness in handling thermal heating and cooling duties. The following features outline how plate heat exchangers can optimize your process. High Heat Transfer: Film coefficients are three to five times higher and the lower thermal resistance of the plates (due to thinner material) combine to provide high heat-transfer rates compared to tubular or spiralplate designs. In combination with fully countercurrent arrangement of the plates, this allows heat recovery or regeneration of 90-95% in many processes. Flexibility: Many processes are not at their optimum as designed and require equipment changes and modifications after startup to achieve maximum throughput. This fine-tuning is readily achieved with the plate heat exchanger by adding, removing, or rearranging plates as required to meet actual process conditions. Similar adjustments can also be made to accommodate future process or plant expansions or modifications. Broad Range of Options: APV provides a broad selection of plate sizes and corrugation patterns, offering the greatest number of options and thermal lengths, ensuring you get the solution that best meets your needs. Plate heat exchangers provide maximum surface area from 150 ft² to 33,900 ft². Accurate Performance Prediction: Variable length plates are available in a variety of different corrugation patterns, giving each plate its own predictable performance characteristics. This allows for accurate calculations of heat transfer surface, which more precisely matches required thermal duty without oversizing the exchanger, resulting in the use of fewer plates and smaller, less expensive exchanger frames. Compactness: As a direct result of its high heattransfer capability, the plate heat exchanger may be installed in one-fourth to one-tenth the floor space required by other types of heat transfer equipment, often performing at a higher heat load. Cleanability: The efficient use of heat-transfer surface eliminates areas of low or no flow, thus preventing the build-up of dirt or debris. This also allows for effective “cleaning in place” (CIP) to remove chemical film or scaling deposits. Accessibility: The gasketed plate exchanger provides full access to both sides of the heat-transfer surface for inspection, maintenance, and cleaning in cases where the unit has been allowed to foul beyond the capabilities of chemical cleaning. This access is readily accomplished within the installed space of the unit. Economy: The high heat-transfer capability reduces surface area requirements and, thus, the initial cost of the equipment. Additional cost savings carry through as the result of reduced installation space, ease of maintenance, high energy recover and reduced service fluid requirements. For more information on how APV can help to increase your process efficiency in free cooling, heat recovery, water source heat pump, thermal storage, pressure interceptor or district heating and cooling applications, contact APV at 800-207-2708 or e-mail us at answers.us@apv.com. © 2008 SPX 86 ASHRAE Journal ashrae.org December 2008

Ashrae Journal - December 2008

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