Heat Exchangers

comparison between Gasketed Plate Heat Exchangers (GPHE) and Brazed Plate Heat Exchangers (BPHE) 1. Construction Feature Gasketed PHE (GPHE) Brazed PHE (BPHE) Design Plates sealed with rubber gaskets and held in a frame Plates are vacuum brazed (usually with copper or nickel) into a solid block Serviceability Fully disassemble; plates and gaskets...

Here are the key advantages of Plate Heat Exchangers (PHE) over Shell and Tube Heat Exchangers (STHE): 1. Higher Heat Transfer Efficiency 2. Compact and Space-Saving  3. Easy Maintenance and Cleaning 4. Lower Fouling Tendency 5. Flexibility and Expandability 6. Lower Operating Costs 7. Closer Temperature Approaches 8. Lower Capital Cost for...

The Material of Construction (MOC) of a Plate Heat Exchanger (PHE) depends on the type of fluids, temperature, pressure, and corrosion resistance requirements. Here’s a breakdown of commonly used materials: 1. Plate Materials Material Properties Typical Applications Stainless Steel (SS 304 / SS 316) Corrosion-resistant, durable,...

Plate Heat Exchanger (PHE) vs Shell and Tube Heat Exchanger (STHE) –  Here’s a clear comparison between the two based on different criteria:  Design and Construction Feature Plate Heat Exchanger (PHE) Shell and Tube Heat Exchanger (STHE) Structure Series of thin, corrugated plates clamped together Bundle of tubes enclosed within a...

Gasket Types in Plate Heat Exchangers The types of gaskets used in plate heat exchangers are: Slit-in Gasket (Glue-free type) The slit-in gasket—often referred to as the “clip-on gasket”—is engineered for rapid replacement and minimal downtime. This glue-free design is ideal for industries demanding frequent sanitation or inspection, such...

What is the Design of Plate Heat Exchangers? Plate heat exchangers (PHEs) are high-efficiency heat transfer devices used extensively across HVAC systems, chemical processing, food and beverage production, power generation, and other industrial applications. Their design enables effective heat exchange between two or more fluids, typically liquids...

Operational Conditions of Plate Heat Exchangers Consider these aspects when operating plate heat exchangers: Standard Operating Procedure for Plate Heat Exchangers Employ the following essential procedure Precautions for Temporary Shutdown Follow these precautions: Long-term Shutdown Precautions Steps for disconnecting the unit include:

Plate Heat Exchanger Safety Measures Pre-Start-up Cautions Ensure all bolts are secure and the plate pack is correctly assembled before startup. Initiate operation gradually, avoiding pressure shocks or water hammer to prevent equipment damage.Key points include

Design and Function of Plate Heat Exchangers Operating a plate heat exchanger involves several steps: Pressure Drop Considerations Maintaining a specified pressure drop is critical. Excess energy may be necessary if it deviates from the design, signifying potential fouling or clogging. Monitor the flow rate against specifications to uncover...

Understanding Plate Heat Exchangers and Their Functionality A plate heat exchanger (PHE) is a compact and efficient device designed to facilitate the exchange of heat between two fluids, typically at different temperatures, using a series of thin metal plates. Functionality of Plate Heat Exchangers This section delves into how plate heat exchangers...

These use spirally wound plates to create channels for fluids, offering high heat transfer efficiency in a compact design.  These are essentially plate heat exchangers used for heating or cooling applications, often in air handling units.  These have a double-walled plate design, providing an extra layer of safety and preventing mixing of...

Gasketed Plate Heat Exchangers: 2. Brazed Plate Heat Exchangers: 3. Welded Plate Heat Exchangers: 4. Semi-Welded Plate Heat Exchangers:  5. Plate-and-Frame Heat Exchangers: 

How does a plate heat exchanger work? Heat transfer theory The law of physics always allows the driving energy in a system to flow until equilibrium. Heat dissipates when there is a temperature difference. A heat exchanger follows the equalisation principle. With a plate heat exchanger, heat cuts through the surface and separates the hot […]

The two fluid medium in the system follows a counter flow path with; one fluid getting in from top while leaving at bottom and another entering at bottom and leaving at top. The rate of flow is controlled in the system to avoid negative effects of turbulence flow such as erosion. The type and length […]

A single metal plate can have high or low tetra pattern which aids in efficient heat exchange between the liquids. These corrugated structure types create turbulence in the flow; creating much better heat exchange between the two media. The complete plate pack assembly is as such; that the hot medium flows on one side of […]

Gasketed Plate Heat Exchangers The plate-and-frame or gasketed plate heat exchanger (PHE) consists of a number of thin rectangular metal plates sealed around the edges by gaskets and held together in a frame The frame usually has a fixed end cover (headpiece) fitted with connecting ports and a movable end cover (pressure plate, follower, or...

Plate-type heat exchangers are usually built of thin plates (all prime surface). The plates are either smooth or have some form of corrugation, and they are either flat or wound in an exchanger. Generally, these exchangers cannot accommodate very high pressures, temperatures, or pressure and temperature differences. Plate heat exchangers (PHEs){can...

CLASSIFICATION OF HEAT EXCHANGERS Heat exchangers may be classified according to the following main criteria: •Recuperators •Regenerators •Direct Contact apparatus RECUPERATORS • The conventional heat exchangers with heat transfer between two fluids. • Hot steam A recovers some of the heat from stream B. REGENERATORS •Storage type heat...

A heat exchanger can be defined as any device that transfers heat from one fluid to another or from or to a fluid and the environment. They are specifically designed for the efficient transfer of heat from one fluid to another fluid over a solid surface. WHAT ARE HEAT EXCHANGERS USED FOR? They have the […]