With the start of the free cooling season, Kaltra has announced the availability of scalable free cooling modules that can be paired with its air-cooled chillers, including the Lightstream Screw II models with inverter-driven and fixed-speed screw compressors and Lightstream Scroll II series chillers.
Free Cooling Concept
Free cooling is a method of cooling by using ambient air rather than performing the refrigeration cycle with, e.g., with a chiller. Many cooling systems engaged for air conditioning or industrial cooling require chilled water throughout the year. During cold seasons, ambient air is cool enough, colder than the supply chilled water setpoint, and mechanical cooling with the chiller’s compressors can be replaced with the free cooling operation. Even in warm climates, free cooling can produce energy savings, as fan motors consume much less energy than compressors.
The air conditioning chiller supporting the movie theatre building in Eindhoven, The Netherlands, was the original equipment that has reached the end of its service life. To address the recurring maintenance issues associated with air conditioning system, the building owner has decided to replace existing equipment, including the original chillers installed at the roof gantry, with a modern energy-efficient system.
Several concerns including inefficient energy use and growing maintenance costs initiated the need for a chiller replacement at Business Park Vienna, Austria. Having been installed for a long period, and being one of the largest energy consumers in a multi-story building, the existing air-cooled chiller did not operate efficiently under part load conditions such as non-business hours air-conditioning.
Over time, increasing power density and growing number of installed servers had increased the heat load on Telecity data center cooling system which operates on a 24/7 basis 365 days on the year. Existing fixed-speed chillers installed during the building’s construction could not meet the cooling demand and provide the necessary redundancy Telecity required. As a result, the cooling system needed to be upgraded to keep pace with the data center’s growth.
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.
Air-based free cooling uses low-temperature ambient air as a cooling medium for chilled water systems, thus providing significant opportunities to generate energy savings. The more time the chilled water system can operate in the free cooling mode, the higher the energy savings it can deliver.
WHO WE ARE
Kaltra is a customer-focused developer and supplier of reliable, energy efficient thermal management equipment and solutions.
From the professionalism of our research and development engineers to the wide experience of our service team, we are dedicated to delivering you the best service possible.