R32 scroll chiller

Kaltra launches a range of scroll chillers optimized for lower GWP refrigerant R32

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Kaltra extends the portfolio of low-GWP chillers with the launch of Lightstream Scroll II range based on its Versa platform and operating on refrigerant R32. Lineup’s capacity ranges from 300 to 1100kW at nominal conditions and demonstrates the same high level of efficiency as previously introduced R452b-based models.

Lightstream Scroll II R32 available with the same extensive set of hydronic options, free cooling circuit, safety options, low-noise models, and control software functionality as found in existing Lightstream Scroll chillers running on refrigerants R410a and R452b.

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Precision air conditioner

Kaltra updates its range of Delta DX precision air conditioning units

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This week Kaltra announced the updated range of its mainstream Delta DX precision air conditioners.

New models received the scroll compressors with latest control electronics and recent-generation radial EC fans with Modbus control.

The capacity range has been extended with unit models in the 5-15kW range (equipped with rotary compressors), as well as with top models delivering 125-150kW of cooling.

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HVAC system

Kaltra offers cooling solutions for HafenCity development project

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Urban redevelopment plays a major role in the growth strategy of today’s cities. The advantages of urban renewal are obvious: substantial savings can be achieved by using modernized, energy-efficient infrastructure, including air conditioning and cooling facilities – which draw a significant fraction of energy in modern urban areas. Read more

Free cooling chiller

Kaltra extends the capacity of its flagship free cooling chiller range

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Kaltra has extended the capacity range of its Lightstream Freecool inverter chiller to 1800kW of refrigeration. Lightstream Freecool chiller lineup was introduced in 2017, initially with a capacity range of 450 to 1200kW.

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Dry cooler

Dry coolers vs. wet cooling towers

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Working Principle

Cooling towers are heat-transfer devices that are used to reject heat loads to the atmosphere. Cooling towers are used to cool circulating water in a wide variety of applications such as process cooling and HVAC systems.

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Water-cooled chiller

Air-cooled vs. water-cooled chillers

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Working Principle and Differences

A chiller is a heat transferring device that uses mechanical refrigeration to remove heat from a continuous flow of process liquid and transfers it to the environment, thus lowering the temperature of the process liquid. Read more

Vienna office

Kaltra establishing its presence in Austria

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We are delighted to announce the expansion of our business with the launch of our Austrian office, located in Vienna. In line with Kaltra’s growth in the Austrian market, the Vienna office strengthens our positions with a focus on expanding regional presence.

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Bora XL dry cooler

Kaltra expands its dry cooler portfolio with Bora XL range

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This week, Kaltra announced its next range of dry coolers based on recently engineered Versa platform. Versa is a shared set of innovative engineering, major components, and production efforts over a number of the distinct, full-size chiller, condenser, and dry cooler ranges. Kaltra’s equipment based on Versa platform characterized by high flexibility, significantly lower manufacturing costs, and enables easy customization and adaptation to the customer-specific application and requirements.

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Bora XL condenser

Kaltra offers high-performance condensers of Bora XL range

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The XL range is a further development of Bora series air-cooled condensers which offer to the customers consistently high performance combined with reduced footprint and low refrigerant charge. Bora XL condensers have been designed to use with both traditional and low-GWP refrigerants, including R134a, R410a, R452b, R513a, R449a and more. The range includes models in the nominal capacity range from 150 to 1850 kW with two available sound level versions: standard low noise and extra low noise.

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Water-cooled Turbocor chiller

R1234ze chillers bring efficiency to rolling mill facility

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As global warming potential becomes more of an issue, a growing number of industries and businesses moving toward new refrigerants. One of the best examples is the recent upgrade completed by Kaltra for ArcelorMittal’s hot strip rolling mill cooling in Belgium. Recently, the cooling system was driven by water-cooled chillers charged with large amounts of refrigerant R134a, which is characterized by high GWP value of 1430.

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E-coated microchannel coil

Heat exchanger protection with electrocoating

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Corrosion, the deterioration of metals and alloys through a physical and/or chemical reaction with the environment, is expensive. Heat exchangers used in HVAC equipment, specifically condenser and cooling/heating coils are exposed in the environment, and this can lead to corrosion, failures, and performance degradation of the equipment in the cases of improper heat exchanger protection in corrosive locations.

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R452b scroll chiller

Air-cooled chillers with R452b now available

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Following the debut of its water-cooled chillers running on refrigerant R452b this March, Kaltra announces an air-cooled range of chillers with scroll compressors using this low-GWP refrigerant.

Lightstream Scroll II R452b chillers will be available in the capacity range from 260 to 1000kW and may be fitted with the highly efficient free cooling system. Other options include partial heat recovery with a desuperheater or full heat recovery, making these chillers a multi-purpose solution for simultaneous, year-round production of chilled and hot water.

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Serpentine coil

Serpentine coils for compact cooling systems

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Compact heat exchangers, especially those of serpentine design, are widely used for cooling in many industries, products and systems, from consumer products to IT cooling to military applications. In recent times, with the advances in microfluidics and progress in manufacturing, compact microchannel heat exchangers are becoming widespread. The principal idea behind using microchannel heat exchangers is their potential for enhanced heat transfer capabilities. The use of such heat exchangers enables the transfer of large amounts of heat while benefiting from high heat transfer coefficients.

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Water-cooled chiller

R452b chillers added to Kaltra portfolio

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Kaltra is now offering low-GWP refrigerant R452b across its Easystream II range of modular water-cooled chillers with scroll compressors – an environment-friendly alternative to R410a gas with a GWP value as low as 675. R452b is a zeotropic HFO/HFC blend classified as a mildly flammable refrigerant (A2L ASHRAE safety class) that delivers an optimal balance of performance, safety, and compatibility to replace R410a and outperforms other R410a alternatives.

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Microchannel heat exchanger manufacturing plant

Microchannel coils in single-phase heat transfer applications

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Single-phase heat exchangers are widely used today for a variety of cooling and heating applications and in different types of equipment. These include free cooling systems, dry coolers, air conditioners, and more, where the most common media is water or glycol mixtures. Microchannel coils in practice became the norm in condenser applications, and, more recently, microchannel heat exchangers became an alternative to finned tube coils that used traditionally for water applications.

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Scroll chiller

Kaltra adds air-cooled version to its Easystream II chiller range

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Kaltra, a leading manufacturer of air conditioning and refrigeration equipment, has announced the commercial launch of scroll chillers that expands an existing lineup of condenserless and water-cooled models with air-cooled version.

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Canary Wharf chilled water plant

Kaltra completes the chilled water production project in Canary Wharf

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It is well-known that the cooling equipment dominates in energy consumption in commercial buildings. Alongside, electricity prices are increasing around the world, increasing pressure on facility managers to reduce the operating costs incurred by operating chillers. The facility managers at a newly constructed commercial building in Canary Wharf, London, were tasked to build and deploy a central air conditioning system with improved energy efficiency and lifecycle value, and Kaltra was invited to contribute to this task.

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