Carrier celebrates 100th anniversary of Founder’s invention of centrifugal chiller

DUBAI, UAE, 30 June 2022: On the evening of May 22, 1922, Willis Haviland Carrier invited 300 people to a sheet metal shop in Newark, New Jersey, for a free meal and a boxing match, followed by the unveiling of the first centrifugal chiller technology, Carrier said through a June 30 Press release, adding that it celebrated the 100^th anniversary of the invention of the centrifugal chilling machine that in many ways made the modern world possible. Carrier is a part of Carrier Global Corporation.

 “[Willis] Carrier’s breakthrough invention opened the door to large-scale comfort air conditioning while improving the effectiveness of process cooling,” said Gaurang Pandya, President, Commercial HVAC, Carrier. “Each day we build on that legacy, innovating with purpose to create what’s next, get ahead of changing requirements, unleash the power of digital technology, run smarter with IoT and help customers deploy commercial HVAC solutions aligned tightly with their business objectives.”

Willis Carrier’s conception to combine a centrifugal refrigeration compressor with a shell, a new type of condenser and a chiller on one frame enhanced process cooling in factories around the world, Carrier said. Following the first installation of three centrifugal chillers at a Philadelphia chocolate factory in 1923, Willis Carrier’s innovation soon provided process cooling to rayon manufacturers in India and cracker factories in Mexico, the company said.

In 1924, Willis Carrier realized his dream of comfort cooling when the owners of a Detroit department store added centrifugal chillers, the company said. The centrifugal technology reliably and affordably delivered comfort air to the public in theaters, stores, restaurants, sports venues, ships, hospitals and office buildings, the company claimed.

A decade later, centrifugal refrigeration had driven process air into more than 200 industries, the company said. Food and beverage production became safer, hospitals were more comfortable and sanitary and new lifesaving drugs, such as penicillin, became possible, the company added.

By providing precise temperature and humidity, centrifugal chiller technology has supported the infrastructure of the modern digital age, including electronics of every type, semi-conductor chips, data centers and robotics, the company said. These new inventions and new technologies couldn’t have existed without it, it added.

Sathya Moorthi, Managing Director, Carrier Middle East, said: “Carrier has evolved over the years from being a manufacturer of cutting-edge equipment to providing solutions that harness the power of variable frequency drives and IoT, ensuring that business-critical activities run at peak effectiveness, and provide operational efficiencies and insights. This demonstrates our commitment to continuously improving energy efficiency while enhancing the comfort levels of the occupants in the harsh Middle East climate conditions.”

Carrier said that while the fundamental physics of centrifugal technology have not changed in a century, its engineers have never stopped driving new advancements in centrifugal chiller technology. Today, the Carrier AquaEdge 19DV water-cooled chiller provides world-class energy efficiency with its unique free cooling and heat recovery options that boost the total energy savings of the system while using ultra-low global warming potential refrigerant, the company added. The AquaEdge 19MV water-cooled chiller offers a wide operating range in a greatly reduced machine size to replace older chillers, the company said, adding that both machines feature its unique EquiDrive two-stage back-to-back compressor technology to dramatically reduce energy consumption.

STULZ, Mirus, ebm-papst to host webinar on harmonic mitigation in data centres

FREDERICK, Maryland, 26 September 2021: STULZ, Mirus International and ebm-papst will be conducting part 2 of a e-discussion on harmonic mitigation in data centres, STULZ said through a Press release. The webinar is on September 28, the company added.

To improve energy efficiencies in today’s modern custom air handlers, highly efficient electronically commutated (EC) fans are often incorporated for air movement, STULZ said. This is because the fan systems can improve efficiencies over conventional AC motors equipped with variable frequency drives (VFDs) by 30% or more, it said. An EC fan incorporates a brushless DC permanent magnet motor (BLDC) controlled by an integrated rectifier, inverter and smart electronics.

BLDC motors, with efficiencies greater than 90%, provide a more effective ventilation system, so that ‘free cooling’ becomes more easily achievable, which contributes to the energy savings potential, it said. Also, air distribution can be improved with multiple fan arrays allowing upstream or downstream components, such as filters or heat exchangers, to receive a more even airflow, thereby improving air filtering and heat transfer efficiency, it added.

In striving towards reliable and efficient systems, one significant factor sometimes overlooked is electrical harmonic distortion, STULZ said. One of the few things common with AC/VSD and EC fan systems is that they are both harmonic generating, non-linear loads, it said.

Without proper harmonic mitigation, non-linear loads can distort the AC power distribution and possibly expose a mission-critical facility to electrical issues, such as overheating distribution equipment and failure of sensitive equipment connected to the same electrical bus, it added.

The speakers include Dave Meadows, Director of Technology, STULZ USA; Tony Hoevenaars, President and CEO, Mirus International; and Joe Landrette, Director, VAC & Data Centers and Digital Solutions, ebm-papst. According to STULZ, the webinar, scheduled for a 2pm (Eastern Time, US and Canada) start, will be useful to electrical engineers, mechanical engineers and end-users.