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.

Giwee launches full DC inverter CHV Pro VRF

FOSHAN, Guangdong, China, 29 June 2022: Giwee has launched a full DC inverter CHV Pro VRF system, which the company described through a Press release as being suitable for, and as offering stable operation in, the Middle East region’s hot summer temperatures, reaching in excess of 50 degrees C.

With its high-quality components and superior structure design, the CHV Pro VRF series is quite suitable for T3 climatic conditions, the company claimed, adding that the T3 inverter technology, combined with high-efficiency condenser and refrigerant cooling technology, enables its maximum operating ambient temperature to reach 55 degrees C.

Giwee further said the CHV Pro Series DC Inverter VRF is suitable for heating and cooling of high-rise buildings, office buildings, hotels, apartments, hospitals and other places. The application enables long refrigerant pipe connections of up to 1,000 metres, and the height difference between the indoor unit of up to 110 metres makes the CHV Pro perfect for large projects, the company claimed.

According to Giwee, the single outdoor unit offers capacity ranges from 8 HP up to 32 HP. Four outdoor units can be combined in a VRF system to achieve maximum combination capacity up to 96 HP, the company said. Hundred indoor units, with capacity up to 130% of the total outdoor units’ capacity, can be connected in one VRF System, the company said, adding that the system is also equipped with functions such as centralised control, wireless communication, indoor and outdoor unit positioning and auto refrigerant status checking for easy maintenance.

GEA expands semi-hermetic product portfolio

DUESSELDORF, Germany, 17 May 2022: GEA Heating & Refrigeration Technologies said it is expanding its semi-hermetic product portfolio, with two new screw compressor models – the GEA CompaX 350 and 400 – set to be launched in the second quarter of 2022. Making the announcement through a Press release, GEA said it is also launching the GEA Grasso X semi-hermetic screw compressor packages. For the BluX chiller, there will be major technical enhancements and adaptations for optimal implementation to the compressors, it said.

The two models, 350 and 400, with a flow volume of 321 and 372 m³/h (at 2,940 rpm), extend the semi-hermetic screw compressor series from larger to medium and also smaller capacity requirements, the company said.

They combine best efficiencies by using the natural refrigerant, ammonia, a wide, stepless adjustable, variable internal volume ratio and a wide speed range as well as highest safety and reliability through decades of experience in developing screw compressors, the company claimed.

The compact design and the simultaneously high degree of integration also make the CompaX a cost-efficient and space-saving product, the company further claimed.

In the introductory phase, the 350 and 400 models are available as both packages and chillers, the company said. The new Grasso X semi-hermetic screw compressor packages offer maximum flexibility and efficiency with a minimum footprint and overall cost, the company said. Customers can choose between a single version and a multipackage. The multipackage can optionally be configured by the customer with two, three or four identical CompaX 350 or 400 units in parallel arrangement, the company added.

Combined with the wide speed range of each screw compressor, the Grasso X setup provides availability, redundancy and efficiencies at the highest level over nearly the entire full and part load range, the company claimed. Refrigeration capacities range from approximately 200 to 1,900 kW (NH₃, -10/+35 °C), it added.

The existing BluX semi-hermetic chiller series is also extended by the new compressors, the company said. The BluX includes all the features and benefits of the unit. The proven, state-of-the-art heat exchanger set completes the product to a compact, highly efficient and safe plug-and-play solution, the company claimed. With refrigerant inlet and outlet temperatures of +12/+6 °C and condensing at ambient temperatures (+35 °C), the BluX capacity range extends from approximately 350 kW cooling capacity with 1x CompaX 350 at 3,000 rpm to circa 1,530 kW with 2x CompaX 400 at 6,000 rpm, the company said. Larger capacities are covered by the GEA BluX with the existing large CompaX 700 and 900 types, it added.

“The compact, safe and reliable products, in combination with their high efficiency, lead to reduced total costs and a most sustainable solution,” said Ron Hoffmann, Product Manager for screw compressors, GEA. In addition, GEA systems require a minimum of maintenance. “We like to convince our customers with the performance and efficiency figures of our machines, Hoffmann said. “We are happy to bring over 50 years of expertise in the development and production of screw compressors to the market with our proven and new products.”

Cooling to the Green Deal with natural CO2 refrigerant systems

WELSHPOOL, United Kingdom, 17 August 2021: Invertek Drives showcased its dedicated VFD, Optidrive Coolvert, for use on CO₂ refrigeration display cases used in the retail sector. The company added that its Optidrive Eco operates on larger current refrigeration compressor racks and cold rooms.

Invertek make the announcement against the backdrop of the European Commission’s Green Deal, also referred to as Fit for 55, which sets out proposals to cut EU net greenhouse emissions by at least 55% by 2030, compared to 1990 levels. This could mean the current target of reducing fluorinated greenhouse gas (F-Gas) emissions by two-thirds by 2030, compared with 2014 levels, will be adjusted and tightened further.

The EU F-Gas Regulation brought a 44% reduction in the amount of available HFCs in the EU, compared to 2015. By 2030, the current regulation allows only 20% of HFCs being available, with stepped drops between then and now. This could change in the recast.

According to Invertek, the impact of both means there is a need to ramp up the use of natural refrigerants, such as CO₂, in cooling and refrigeration systems. And this isn’t just in the EU but throughout the world as part of the existing Kigali Amendment to the Montreal Protocol, it said.

Variable frequency drives (VFDs), the company said, are playing an important role in reducing emissions and energy use in HVAC&R systems. Optidrive Coolvert, it said, is one of the smallest VFDs in its class providing OEMs with opportunities to reduce panel space and lower machine costs. It fits directly into refrigeration display cases alongside a CO₂ compressor, it added.

This is in addition to end-user savings of up to 25% using CO₂ refrigerant condensing systems, which it is specifically designed to work with, the company claimed. A combination of meeting EU F-Gas Regulations and cutting energy use is a significant benefit for the end-user as well as for the environment, it said.

Mike Carman, Head of Sales, Invertek Drives, said: “The recast of the F-Gas Regulation comes as the EU sets out its new and wider environmental ambitions through the Green Deal. It’s widely believed this is the precursor to a significant adjustment in the F-Gas Regulation timeframe.

“With either more cuts in the amount of HFCs available in the EU or increased limits on emissions, it’ll impact on the manufacturers and end-users of refrigeration and wider HVAC/R systems”

According to Invertek, the Optidrive Coolvert also has the widest ambient operating range of between -20 degrees C and +60 degrees C, making it ideal for use in a wide range of environments. It can be used for the control of CO₂ ­­­­rotary or scroll, BLDC compressors used in supermarkets and convenience store display cases; heat pumps, and condensing units, the company said. This is in comparison to the Optidrive Eco VFD, which operates on larger-capacity semi-hermetic and screw compressors used in industrial and food retail refrigeration racks, and chillers, the company added.

According to Invertek, Coolvert is compatible with all motor types, including induction motors, permanent magnet motors, brushless DC motors, synchronous reluctance motors and Line Start PM motors ranging between Single Phase (Active PSE) 7A and 20A, and Three-Phase 14A to 24A (input of 200V to 480V).

Its open Modbus RS485 communication, the company said, ensures seamless connection to any external application controller, allowing the OEM freedom to select which components to use, which again helps lower manufacturing costs.

With an IP20-rated front and an IP55-rated rear, its panel mounting allows the drive’s power electronics to be cooled by the chilled air of the condenser, the company said, adding that this allows OEMs to select the smallest panel size for the control of the electronics, while removing heat generated by the drive and maintaining the IP rating.

ENGIE Refrigeration bets on sustainable refrigerant

LINDAU ON LAKE CONSTANCE, GERMANY, 23 February 2021: ENGIE Refrigeration has added a new refrigerant to its portfolio. R-515B is now available for QUANTUM chillers as an alternative to R-1234ze, it said. R-515B is eco-friendly, non-toxic and non-combustible and, thus, especially safe, it said. With the introduction of the new refrigerant, the company said it is setting a clear example for more sustainability.

ENGIE said it is one of the first manufacturers in the world to use the refrigerant R-515B. It was developed as an alternative to R-134a and can be used instead of R-1234ze in the form of a drop-in refrigerant, it added. “Refrigerant R-515B combines the positive properties of a 77% lower greenhouse potential than R-134a with a classification as safety level A1 according to EN 378-1,” Daniel Keller, Head of Product Management, ENGIE Refrigeration, said. “This means that unlike R-1234ze (A2L), it is considered a non-combustible safety refrigerant.”

R-515B is an azeotropic mixture, 91.9% R-1234ze and 8.9% R-227ea, ENGIE said. With a GWP value of 293 (IPCC-AR4*) and 299 (IPCC-AR5**), R-515B meets the requirements of the F-Gas Regulation – until at least 2030, the company said. Another important advantage for companies operating existing machines run on R-134a is that because R-515B is classified as A1, no additional safety measures need to be taken for the machine room containing the chiller or heat pump, the company said.

From February 2021, the air-cooled, water-cooled and split models of the QUANTUM series are available with R-515B as an alternative to the previous standard refrigerant, R-1234ze, ENGIE said. “With the new refrigerant, R-515B, the chiller achieves almost the same refrigeration capacity and energy efficiency as with R-1234ze,” Keller said. “This means that R-515B is suitable for customers from all industries that require optimal refrigeration capacity and also wish to switch to an eco-friendly and sustainable refrigerant.

‘A gas leak becomes evident only after the system runs out of it’

CORNAREDO, Milan, Italy, 12 February 2021: One of the weak points in a gas detection system, especially in refrigeration applications, is that it is almost impossible to detect a small leakage in the plantroom. Dr Giacomo Frigo, Founder & Managing Director, Sensitron, said this, adding that the management realises the leakage only when there is no more gas in the system.

Dr Frigo pointed out to how hotel chains have started installing fire detectors to be able to assure guests that no accidents will occur in their hotel room. Much in the same way, he said, the right step forward would be to install gas detectors that give out a warning much before an alarm does, to improve the management of a gas detection system.

Hand in hand with installation is the maintenance of the detectors, he said. In Sensitron, for instance, we have adopted the NDIR technology in all our detectors, which he said is a bit more costly than the MOS technology. The additional cost, he added, is worth it, because the alarm value from the detector is much more stable and accurate. As a result, he further added, the period of checking and recalibration of the detector practically is three time longer than that of other systems.