Kaltra to modernise its air-cooled Turbocor chiller range


Kaltra, one of the specialists in air-conditioning and heat transfer technologies, has modernised its Turbocor compressor-based chillers with air-cooled condensers and presents performance highlights of the series. The Lightstream Turbo II series is a unique development in the field of demand-responsive chillers, specially designed for variable-load cooling and optimised for the novel lowerGWP refrigerants R1234ze and R513a.

The series is provided with the Turbocor compressor technology enabling cooling capacity control and resultant optimal energy use in applications. Up to four compressors and two refrigeration circuits provide cooling capacity in range to 1350 kilowatt when running on refrigerants R134a and R513a, and up to 1050kW with R1234ze.

Economisers – flash tank type or with a subcooler – available optionally. Four acoustic packages available for selection, as well as packages for operation in extreme cold or hot climates.

Control software optimised for multi-compressor operation and offers extended functionality, advanced energy metering, and remote chiller management. By selecting an efficiency-optimal combination of compressors to cover current cooling demand, control software ensures the lowest possible energy consumption. Compared to the preceding generation, new Turbocor chillers demonstrate about 6 percent higher energy efficiency in cooling load range from 25 to 75 percent, and quieter operation.

The chillers are designed based on the latest Versa platform, with more than 65 percent components and assemblies shared between various Kaltra equipment lineups, providing lower initial and aftersales costs for the users.

In Q2 2020, Kaltra plans to adapt Lightstream Turbo II chillers to run with refrigerant R515b – a non-flammable, azeotropic blend of R1234ze and R227ea with global warming potential of as low as 299, aimed at replacing R134a.

In addition to air-cooled design, chillers are also available in a free cooling version with a wide operating envelope, equipped with demand-controlling valves and microchannel cooling coils. Distinguishing features of the system are close approach temperatures making it possible to engage free cooling at higher ambient and its high heat rejection capacity that is supportive of early switching to free cooling-only chiller operation.

Oil-free centrifugal chillers are core products in Kaltra’s market segment, now with modernised Lightstream Turbo II air-cooled models having a leading position in terms of price/performance. Modernised Lightstream Turbo II is an optimum choice for customers whose predominant chiller selection determinants are both purchase costs and longterm benefits of savings in energy consumption.

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