Heat Transfer by Plate Heat Exchangers


The first commercially successful plate-and-frame Heat Exchanger in the world was introduced in 1923 by Dr. Richard Seligman, the founder of the Aluminum Plant and Vessel Company Ltd., commonly known today as APV. The very first Paraflow Plate and Frame Heat Exchanger was constructed of cast gunmetal plates and enclosed within a frame that set the standard for today's computer-designed thin metal plate Heat Exchanger known around the world.

Function of a Plate Heat Exchanger

A plate Heat Exchanger is a unit which transfers heat continuously from one media to another media without adding energy to the process. The basic concept of a plate and frame Heat Exchanger is two liquids flowing on either side of a thin corrugated metal plate so heat may be easily transferred between the two.
The plates are compressed by means of tie bolts between a stationary frame part (called the head) and a movable frame part (called the follower).
The plate Heat Exchanger efficiency requires less floor space compared to other types of Heat Transfer equipment and is lighter in weight.

Plate Heat Exchangers
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Design of a Plate Heat Exchanger

The plate Heat Exchanger is designed with either single-pass or multi-pass flow, depending on the duty. For most duties single-pass is suitable and often the preferred solution as it keeps all connections on the stationary frame part and consequently makes disassembly easier. Multi-Pass however, is required when flow rates are low or when approach temperatures are close. Other factors such as building ceiling height or space limitations for handling of large plates often leads to the decision to use multi-pass and thereby more and smaller plates.

Types of a Plate Heat Exchangers

Paraflow Plate Heat Exchangers
The Paraflow is the original plate type Heat Exchanger designed by APV to provide maximum efficiency and cost effectiveness in handling a wide variety of Heat Transfer applications. Units come in different configurations, as follows:

ParaBrazed Plate Heat Exchangers
ParaBrazed Heat Exchangers are a compact, cost effective unit designed to deliver high thermal efficiency while maintaining lower pressure drops. It's the perfect choice for many single and two phase Heat Transfer applications for industrial and refrigeration duties.

Hybrid Heat Exchanger - All Welded Design
All welded Hybrid Heat Exchangers combines the advantages of a plate and frame Heat Exchanger with those of a tubular exchanger.

YouTube Video
Plate Heat Exchanger - Working Principle

Advanges of Plate Heat Exchangers

Easy to Remove and Clean


High Efficiency

Compact Size

Close Approach Temperature

Animated Plate Heat Exchanger

Multiple Duties in a Single Unit

Less Fouling

Lower Costs

Reference(s): APV | WCR GROUP