The Semi-welded Plate Heat Exchangers manufacture!

 

Nantong Hi-eff Heat Exchange Equipment Co., Ltd. is a leading supplier of heat exchangers and their plates and gasket spare parts. Our main products are plate and frame heat exchangers, welded plate heat exchangers, plate heat exchanger accessories, etc.

 

 
 
Why choose us

Rich experience

Our team consists of more than 30 technical personnel with more than 20 years of industry experience and has helped our products obtain more than 55 patent certificates.

Accept ODM

Our team is good at customized design and production, and supports OEM and ODM orders, including providing various heat exchange tubes, fins, structural parts, and pipes to meet the requirements of different use environments.

Well equipped

The company is equipped with multiple advanced mold processing CNC machine tools, special hydraulic presses, punching machines, integrated blanking machines and other equipment, and can provide customers with high-quality heat exchanger and gasket spare parts, especially GEA, Tranter, APV, AGC and other models.

Quality assurance

We have our own quality inspection center to ensure that the production process complies with ISO standards, and conduct quality inspection of heat exchangers through hydraulic pressure testing equipment, strength testing equipment, etc. to ensure that all products comply with CE and RoHS certifications.

 

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Advantage of Semi-welded Plate Heat Exchangers

Enhanced reliability
The welded plates ensure a leak-proof barrier for corrosive or high-pressure fluids, minimizing the risk of contamination and maximizing uptime. Meanwhile, the gasketed plates enable quick and hassle-free maintenance, reducing downtime and operational costs.

 

High heat transfer efficiency
The corrugated design of the plates maximizes turbulence in the fluid flow, promoting efficient heat transfer between the two streams. This results in optimized performance and reduced energy consumption.

Compact solution

Like gasketed plate heat exchangers, semi-welded designs offer a high surface area-to-volume ratio, allowing for efficient heat transfer in a compact footprint, making them ideal for installations with limited space.

Versatility

In addition to their reliability, semi-welded plate heat exchangers offer unmatched versatility. They are suitable for a wide range of applications across industries such as hvac, chemical processing, refrigeration, and more. Whether you need to cool, heat, or condense fluids, semi-welded heat exchangers provide a flexible and efficient solution.

Easy maintenance

While some plates are welded for durability, the presence of gasketed plates allows for easy access and maintenance of the heat exchanger, minimizing downtime and facilitating cleaning and inspection procedures.

 

Applications of semi-welded heat exchangers
 

Industrial refrigeration: Evaporators (flooded evaporation or direct expansion evaporation), condensers, liquid coolers, chillers, subcooling, desuperheating of hot gas, heat recovery systems and cascade systems.


Chemicals (such as sulphuric acid/ethylene oxide/ethylene glycol production): Heat management in reaction processes, cooling systems, condensers, evaporators, heat recovery systems, process heating, waste heat recovery systems.


Hydrogen: Heat management in production, liquid and gas coolers, compressor coolers, heat recovery systems, cryogenic systems

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Kelvion LWC150S Heat Exchanger

Industrial heat pumps: Evaporators, condensers, heat recovery systems, subcooling, superheating.


Energy storage:Long-duration energy storage (LDES): preheaters, condensers.


Organic rankine cycle (ORC): Recuperators, preheaters, condensers, subcooling.


Other applications: Energy and utilities/Food, dairy and beverages/Marine and transportation/Mining, minerals and pigments/Water and waste treatment

 

Semi welded heat exchanger contruction

 

 

A plate heat exchanger consists of a pack of corrugated metal plates. Each plate is fitted with a rubber gasket, which seals the channel formed between two adjacent plates.
In an alternative design, every second gasket is replaced by a laser-weld to allow for fluids aggressive to the gaskets. The plate pack is assembled between a fixed frame plate and a movable pressure plate and compressed by tightening bolts.
The frame plate and the pressure plate are suspended from an upper carrying bar and guided by a lower guiding bar, both of which are fixed to a support column.
The size of the unit and the material and number of plates are determined by the requirements of the particular application and duty.
Each individual plate heat exchanger is optimised for its duty and, as a result, the usage of materials is kept to a minimum.

 

Our factory

 

Our company has advanced machines and skilled workers, which can meet the needs of various enterprises

 

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Certification

 

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FAQ

 

Q: What is a semi-welded plate heat exchanger?

A: The semi-welded plate heat exchangers from is designed for ammonia systems and can be used for applications such as Condensers, flooded and pumped evaporators, Sub-coolers, Desuperheaters, Superheaters, Economizers and Oil coolers.

Q: What are the common problems in plate heat exchangers?

A: Leakage outside the unit, leakage within the unit, and pressure drop are the three most common problems with PHEs. The majority of these problems are simple to identify and resolve.

Q: How long do plate heat exchangers last?

A: Heat exchangers are usually designed for a lifetime of 20 or 25 years. In fact, they are often in service for much longer.

Q: Why titanium is used in plate type heat exchanger?

A: Titanium has excellent corrosion resistance against seawater. Therefore, it is frequently applied to the primary members, such as heat-exchanging plates and piping, of plate-type heat exchangers (PHEs) that use seawater for cooling and heating.

Q: What is the differential pressure in a plate heat exchanger?

A: Differential pressure is the pressure between the opposite sides of the plate. A heat transfer plate holds steady while fluids flow through each side without mixing. During continuous flow, the forces applied by fluids effect the plate from both sides.

Q: What is the maximum temperature for plate heat exchanger?

A: It is a welded plate exchanger (so there are no gaskets between the plates) that can operate up to a pressure of 30 bars and at temperatures as high as 500°C.

Q: What is the maximum viscosity for a plate heat exchanger?

A: Plate heat exchangers can function with oils having viscosities as high as 2,500 centiPoise.

Q: What is the velocity of water in a plate heat exchanger?

A: Typical velocities in plate heat exchangers for waterlike fluids in turbulent flow are 0.3-0.9 m/s but true velocities in certain regions will be higher by a factor of up to 4 due to the effect of the geometry of the plate design.

Q: What is the minimum temperature approach in a plate heat exchanger?

A: As compared to shell and tube heat exchangers, the temperature approach (the smallest difference between the temperatures of the cold and hot streams) in a plate heat exchangers may be as low as 1 °C whereas shell and tube heat exchangers require an approach of 5 °C or more.

Q: What is the thickness of plate heat exchanger plate?

A: Typical plate thickness being 0.6 mm and operating pressure between 8Bar – 16 Bar while 25Bar is the maximum pressure at which such plate type coolers can be used due to the restriction in the pressure that the nitrile rubber joints can hold.

As one of the leading semi-welded plate heat exchangers manufacturers and suppliers in China, we warmly welcome you to buy high-grade semi-welded plate heat exchangers for sale here from our factory. All equipment are with high quality and competitive price. For quotation, contact us now.

Alfa Laval Gasketed Plate Heat Exchanger, Kelvion LWC150L Heat Exchanger, Alfa Laval Semi Welded Plate Heat Exchanger