Heat Exchanger Tubes

Sound Tube Testing to Deploy AcousticEye Systems for NDT Tube Inspection

"With this partnership in place, we expect the penetration of our ultra-fast inspection system into Europe to accelerate greatly," said Brenda Zeitlin, Vice President of Business Development for AcousticEye. "Under the agreement with Sound we can already boast the entrance of the Dolphin G3 into the markets in Germany, Greece, Croatia, Spain and Benelux."

Sound Tube Testing has already signed on five new service providers in Europe, representing new territories for AcousticEye. The providers are: Vogt Ultrasonics GmbH in Germany, Technava S.A. in Greece, Trokuttest d.o.o. in Croatia, DiagnostiQA Consultoria Tecnica S.L. in Spain, and HPFM in the Benelux region. With many more prospects in the pipeline, the AcousticEye APR technology is guaranteed to be widely available for the inspection of all heat exchangers throughout Europe.

"Our company has been very impressed with AcousticEye's technology since we first started using it last year, and we are excited about the prospect and opportunity to make this inspection technology available throughout Europe," said Hans Felius, CEO of Sound Tube Testing.

AcousticEye utilizes breakthrough acoustic-based technology to revolutionize the way companies perform heat exchanger maintenance. Currently only 8-10 % of tubes are randomly "sampled" due to the time and costs associated with traditional NDT-based inspection methods. The random sampling of tubes results in failures and defects, since the vast majority go untested. The cost of the resulting tube defects - including performance degradation, energy waste, environmental hazards and lower heat transfer - is estimated at $30 billion annually. With AcousticEye, 100% of the 13b tubes used worldwide can be tested for defects at a fraction of the time and expense of other testing methods. As a result, costly downtime due to failures in mission critical equipment can be avoided entirely.

Custom Tubular Copper Heat Exchanger Manufacturer Reduces Costs By ...

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The definition of a heat exchanger is a product manufactured for the efficient heat transfer from one medium to another. Refrigeration heat exchangers are used to exchange energy between the cool gaseous refrigerant leaving the evaporator and warm liquid refrigerant exiting the condenser. These tubular heat exchangers can be liquid-suction or suction-line heat exchangers. They normally yield improved system performance while in some cases they degrade system performance. Basically they provide liquid sub-cooling. They also increase evaporator capacity and can provide protection for the compressors within the OEM products.

The primary designs of tubular heat exchangers are related to the flow within them. There is parallel flow where two or more fluids enter the exchanger at one end and flow parallel to one another to the other side. There is the counter-flow design where fluids enter from opposite ends.

Heat exchangers are designed to maximize the surface area of the wall between the two fluids. Minimizing resistance to fluid flow through the exchanger is a necessary consideration. The tubing used for these types of heat exchangers can be smooth wall inside and out. There is tubing available with inner fins and with both external and internal fins. These external fins can vary in “fins per inch” and in height, angle and width. Some fins are applied to the OD of smooth tube by brazing. Some are cut in the wall which makes a single piece tube.

Specialized custom heat exchangers can take many forms. The following list are many of the common heat exchanger terms:

Coaxial - Refrigerant Sub Cooler

Chiller - Suction Line and Liquid Line

Heat Pump - Condensor & Evaporator

Desuperheater

Cascade

Serpentine

Tubular heat exchanger assemblies involve the insertion of one tube within another larger tube. Often end caps are used where the tubes are joined and they are sealed (brazed) to avoid leaks. The inserted tube can take different forms as well. This tube can be straight through the outer tube. The tube may have a 180 bend that returns to the same side to exit. The inner tube may be coiled in a spiral with the ends configured to come out one end or both.

Heat exchanger design handbook

Heat exchanger tubes

Heat exchanger tubes

Fundamentals of heat exchanger design

Heat Exchanger Tubes