Product Introduction

Plate Heat Exchanger, PHE, is an efficient and compact heat transfer device. Its core consists of a stack of corrugated metal plates. Thin rectangular channels are formed between plates, where hot and cold fluids flow alternately to realize heat transfer.

Key Features

1. High heat transfer efficiency

• Corrugations (herringbone, horizontal, etc.) are pressed on plate surfaces, which induce turbulent flow of fluids and deliver high heat transfer coefficients (up to 3000–7000 W/(m²·K)).
• Counterflow arrangement: the unit achieves a large logarithmic mean temperature difference and high heat recovery efficiency (over 90%).

2. Compact structure & small footprint

• Teat transfer area per unit volume can reach 150–250 m²/m³, approximately 3–5 times that of shell-and-tube type.
• Lightweight, requiring minimal installation space.

3. Flexible and adjustable

• Quantity of plates can be adjusted based on working conditions for convenient modification of heat transfer area.
• A wide range of plate materials and corrugation types are available to suit different media and working conditions.

4. Easy to clean and maintain

• Demountable structure; plates can be removed for cleaning by loosening clamping bolts.
• Suitable for scaling-prone fluids and fluids with impurities.

5. Excellent sealing performance

• Rubber or fluororubber gaskets are used for sealing between plates, resulting in fewer leakage points.
• Internal leakage can be detected via observation ports.

6. Limitations

• Limited pressure resistance (generally ≤ 2.5 MPa, up to 4 MPa with special design).
• Limited temperature resistance, determined by gasket material, normally ranging from −25°C to 180°C.
• Not suitable for fluids containing large amounts of fibers or particles (risk of channel clogging).
• Sealing gaskets require periodic replacement.

Main Applications

Common Types

Selection Key Points

Comprehensive considerations for selection:

• Medium characteristics: corrosivity, viscosity, solid content, temperature & pressure.
• Heat load & temperature difference: confirming required heat transfer area.
• Pressure drop requirement: deeper corrugations on plates improve better heat transfer but result in higher pressure drop.
• Material selection: Stainless steel (304/316), Titanium, Hastelloy, SMO254, etc.
• Sealing gasket：NBR, EPDM, Viton, PTFE, etc., selection shall match medium & temperature.

Plate Heat Exchanger

Advantages and Features of Plate Heat Exchanger

● high heat transfer efficiency & low end temperature difference

Heat transfer is realized via full counter-flow design, enabling an end temperature difference as low as 1℃.

● safe, reliable operation & easy maintenance

Two layers of sealing gaskets are arranged below the corner holes, together with tell-tale holes, to prevent mixing of the two media.

● glue-free gasket design

The roof-shaped gasket adopts a glue-free snap-fit structure. The fixing and sealing functions are separated. It ensures reliable sealing while facilitating convenient disassembly, assembly and replacement.

● reasonable & efficient flow distribution area

It evenly distributes flow velocity and eliminates stagnant flow zones, avoiding corrosion caused by particle accumulation. Meanwhile, it improves the utilization rate of plate heat transfer area and greatly boosts heat exchange efficiency.

● low fouling tendency & cost-effective

Uniform intense turbulence of the fluid provides a self-cleaning effect that inhibits particle accumulation.

● flexible plate combination configuration

Large-angle and small-angle plates of the same model can be combined according to various heat transfer conditions to achieve optimal heat transfer performance within allowable pressure drop.

● alternate wide & narrow channels for same model

A wide range of plate patterns are available to satisfy diverse working conditions and deliver excellent heat transfer efficiency.

● four-corner interlocking positioning structure

Interlocking positioning structures are arranged at four corners of plates, improving reassembly performance and enabling higher operating pressure resistance.

● five-point positioning system

Three positioning points on the upper guide bar and two points on the lower guide bar. Plates can be perfectly reset after disassembly and assembly with accurate gasket sealing, enhancing service performance and pressure resistance.

● one-way clamping tie rod system

Adopts one-way clamping tie rods for uniform compression of plates to ensure consistent and reliable sealing.

● low fouling tendency & easy maintenance

The movable compression plate is equipped with a self-locking mechanism. Only one operator with simple tools can disassemble and assemble the heat exchanger easily on-site.

Gasketed Plate Heat Exchanger

Plate heat exchangers consist of a set of corrugated metal plates. Each plate is provided with four corner holes for the passage of two heat-exchanging fluids (liquid or gas).

The metal plates are assembled in a frame fitted with a fixed plate and a movable compression plate on one side, and tightened by clamping bolts. Sealing gaskets are mounted on the plates to seal the fluid channels and guide the two fluids to flow alternately into their respective passages.

The corrugated plates not only increase the turbulence level of the fluid, but also form numerous supporting points capable of withstanding the pressure difference between media.

The metal plates and movable compression plate are suspended on the upper guide bar and positioned by the lower guide bar, whose both ends are fixed on support columns.

Assembly is carried out with fully automatic electric hydraulic wrenches, which greatly improves production efficiency and product quality, enabling customers to receive high-quality plate heat exchangers within the shortest lead time.

Common Materials

Design Pressure：2 5 Mpa
Design Temperature：-20℃"200℃

Plate materials and gasket materials can be flexibly selected according to operating process conditions.

Brazed Plate Heat Exchanger

Brazed Plate Heat Exchanger

The brazed plate heat exchanger consists of multiple stainless steel corrugated plates and front & rear end covers. High-purity copper foil (or nickel foil) is used as brazing filler between plates, and the whole unit is integrally brazed in a vacuum high-temperature furnace. According to actual working conditions, high, medium and low flow heat transfer plates can be flexibly combined to achieve optimal heat exchange performance, with an overall heat transfer coefficient ranging from 3000 to 12000 W/(㎡·K). Featuring no gaskets and no external frame, the equipment boasts a compact structure and can operate continuously under long-term high temperature and high pressure working conditions.

Main Applications heat pump units chiller units waste heat recovery heating and cooling of lubricating oil and other fluids heating and cooling of compressed gas and other gases heating and cooling of high-purity water for medical, food, electronics ammonia refrigeration boiler / steam other industrial applications

Five Major Features of Brazed Plate Heat Exchanger

Technical Parameters

Application Fields