K65-pic-copyGERMANY: Copper tube manufacturer Wieland is using its participation in Atmosphere America 2015 to introduce its CO2 pipe to the US market.

Already being sold in Europe, the K65 high-pressure pipe system is based on a copper alloy suitable for use on systems up to 120bar. Wieland jointly developed the system with IBP Conex Bänninger who have produced a range of compatible 120bar brazeable joints made of the same high strength copper alloy.

The K65 system is said to be the only TÜV-certified copper alloy suitable for use with CO2 systems and is currently undergoing UL 207 certification for the US market.

The use of a copper alloy enables engineers to use established brazing techniques and ensures excellent thermal conductivity when used in the construction of heat exchangers, says the company.

“The K65 system requires less installation time and forwards heat about 17 times better compared to austenitic stainless steels, thus increasing the efficiency of heat exchangers,” commented Steffen Rieger, manager technical marketing, industrial tubes.

There are other advantages claimed for the new tube. Its inherent strength means it can be made with comparatively thin walls and its light weight brings not only a significant saving in material, but also easier handling.

K65 tubes and fittings are said to be marked appropriately, so that the system components can be clearly identified at all times and, in addition, being slightly magnetic they can also be easily distinguished from copper.

The 4th annual Atmosphere America 2015 takes place in Atlanta from June 25-26. The event is a forum for discussions about the business case for natural refrigerants in North & South America and includes market trends and technology case study sessions, workshops and unparalleled networking opportunities. This year’s event will be even bigger, targeting between 300-350 industry stakeholders including leading retailers and consumer goods brands, suppliers, government representatives, associations, etc. Site visits and training sessions will take place on the days before and after the event.