Precision air conditioner

Technology rally: microchannel vs. finned tube evaporator

In recent times, microchannel heat exchangers (MCHE) have started to attract attention from the HVAC industry as an alternative to fin/tube evaporators. The enhancement of heat transfer and compactness are major advantages of microchannel heat exchangers, as well as reduced refrigerant charge, lower airside pressure drop, and a reduction in materials used for manufacturing. Under current tight regulations of energy efficiency, microchannel heat exchangers are appreciated by many leading manufacturers.

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Manufacturing plant

Kaltra accelerates growth with the opening of a new manufacturing facility in Slovenia

Kaltra is proud to announce the opening of a brand-new manufacturing plant in Slovenia. The facility consists of 4000 square meters of manufacturing space, a test lab, and offices. Approximately 30 employees will work in the new location initially and it is expected to grow to around 80 within the next two years.

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Cooling plant

Efficiency optimization for cooling plants

In most developed countries, a large amount of energy use of about 6% of the total is for air conditioning and refrigeration. The same is true for many hot countries where air conditioning systems use up to 40% of energy in the cities, and this could be a major problem as developing economies continue to grow.

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In-row cooling

Aisle containment as an approach to data center cooling

For decades, data centers have used raised floor systems to deliver cooled air to the server racks. Cooled air discharged by a computer room air conditioner (CRAC – a split air conditioning system or system with fluid coolers) or air handler (CRAH – a chilled water cooling system connected to air-cooled or water-cooled chillers) creates high pressure in the underfloor space. Read more


EVAPCO acquires Alcoil to create EVAPCO Alcoil, Inc.

EVAPCO Inc., an industry leading manufacturing company with global resources and solutions for worldwide heat transfer applications, announced today that it has acquired Alcoil USA LLC , a York, Pennsylvania-based company that designs and manufactures micro-channel heat exchangers.

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Evaporative dry coolers

Kaltra extends its portfolio with evaporative condensers and dry coolers

With the development of evaporative air-cooled condensers and dry coolers, Kaltra sets new standards in the field of efficient and environmentally safe cooling.

The power saving potential of the new units is based on the evaporative cooling principle, in which the air temperature drops when the air takes up water by transforming it from liquid to vapor.

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Microchannel coil

Corrosion protection for microchannel heat exchangers

Corrosion is the deterioration of metals arising from the chemical reactions between a metal and the surrounding environment. In HVAC equipment, such as air-cooled chillerscondensers, and dry coolers, corrosion of the heat exchangers may lead to performance and efficiency losses, as well as to equipment failures.

In order to avoid unwanted corrosion, microchannel heat exchangers and chilled water system, in general, must be properly protected based on environmental conditions.

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Air-cooled chiller

Kaltra reveals the new Ultracompact II product line

As a part of its long-term product development roadmap, Kaltra Innovativtechnik introduces the next generation of its Ultracompact product line. This series covers the cooling duty range between 50 and 300kW with capacity increases of 25kW and provides total or partial heat recovery in compact machine design and suitable for air-cooled applications across many industries.

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Evaporatively-cooled condenser

Evaporative cooling helps to boost cooling equipment efficiency

Adiabatic cooling was first used in the Roman Empire. For 2000 years, people have been using water evaporation to cool down the surrounding air in all types of climate systems, including modern, highly advanced cooling systems, where engineers combine this ancient principle with modern technologies.

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Chiller sequencer

Sequence management for chiller plants

When it comes to chilled water plant optimization, the control strategy based on management of individual water chillers is not an optimum approach to achieve the best results in terms of energy efficiency.

Individual control of the water chillers with common pipework will cause unnecessary cycling of compressors and associated excessive power consumption as a response to changes in cooling demand; consequently, compressor cycling will lead to unstable return water temperature and increased wear of compressors.

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In-row cooling unit

Kaltra announces the second generation of in-row cooling units with a 50% capacity increase

Among other innovations, Kaltra launches the second generation of its high-capacity in-row cooling solution designed for high power density data centers. With the cooling capacity of 141kW, Lambda In-Row is able to replace up to 4 typical in-row cooling units, saving expensive data center space for server racks.

Lambda In-Row has a new microchannel evaporator combined in V-form with a 41m² total heat transfer surface. With these evaporators, the cooling capacity of the new units increases from 90 kW to 141kW (for water temperatures of 15/21°C and inlet air temperature of 40°C).  A special type of manifolds for microchannel heat exchangers provide a uniform water distribution, and at the same time keeps low waterside pressure drop.

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Microchannel evaporator

Alcoil receives U.S. and international patents for microchannel evaporator design

Alcoil announces the issuance of US Patent No. 9,459,057 and European Patent EP 2 948 725, which relates to an improved and advanced refrigerant evaporator design. The patented technology is used as an air-to-refrigerant microchannel heat exchanger to cool air or reject heat in residential, commercial or industrial evaporators and heat pump systems.

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Turbocor chiller

Lightstream Turbo chiller range extended with highly efficient models

Trending Turbocor-based chiller family by Kaltra has been extended with highly efficient models with extra condenser banks, which enable lower condensing temperatures and 15% higher energy efficiency rates (EER) compared to standard Lightstream Turbo models, as well as reduced noise emission level.

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Free cooling chiller

Kaltra announces the new Lightstream Freecool chiller family

Kaltra Innovativtechnik, a German-based provider of innovative thermal management technologies and advanced cooling equipment, is excited to announce the launch of the new lineup of freecooling chillers based on frequency-controlled compact screw compressors and microchannel technology adopted for both condensing and freecooling coils.

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Logistics hub cooling

New logistics hub near Erlangen served by Kaltra chillers

The new logistics hub located near Erlangen, Germany, serves more than 40 international customers and guarantees just-in-time delivery for the clients across Europe. The new center with approx. 35,000m² is dedicated to storing bulky materials under controlled environmental conditions provided by Kaltra Lightstream Screw free cooling chillers.

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Serpentine coil

Serpentine heat exchangers for small cooling applications

Kaltra offers the latest heat transfer technology for electronics cooling, cooling of laser devices, medical appliances, and other small cooling applications with serpentine heat exchangers based on microchannel technology.

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Plant room chiller

Kaltra unveils its new family of packaged chillers

German chiller manufacturer, Kaltra Innovativtechnik, is set to showcase its new Easystream family of air- and water-cooled chillers with scroll compressors in March 2017.

New chillers are intended for either indoor or outdoor installation. The series covers the capacity range starting from 40kW and up to 480kW with cooling densities of up to 220kW/m². When used with Mistral condensers/dry coolers, Easystream allows for installation in populated urban areas and anywhere where low noise pollution is a crucial factor.

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Variable-speed chiller

Kaltra to announce the updated Lightstream Screw air-cooled chiller family

Kaltra is excited to announce the launch of the updated lineup of Lighstream Screw chillers based on fixed-speed or inverter-driven compact screw compressors, which have been improved to perform efficiently and optimally under every climatic condition.

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Compact scroll chillers

Kaltra debut a range of updated compact scroll chillers

Kaltra Innovativtechnik begins marketing and selling updated Ultracompact air-cooled chillers. Each chiller model in the Ultracompact range features an aluminium frame and paneling with a 10-year corrosion resistance warranty.

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Air-cooled condenser

Air-cooled condensers and dry coolers for refrigeration and industrial process

Mistral is the next generation of table-type air-cooled condensers and dry coolers that cover cooling capacities from 5kW up to 1500kW and intended for use with standard refrigerants, ammonia, and carbon dioxide.

One of the cornerstones of Mistral condensers/dry coolers range is the new high efficient heat exchangers with up to 6kW/l performance and reduced refrigerant charge.

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