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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.

GEA introduces BOCK HGX24 CO2 T

DUESSELDORF, Germany, 08 February 2021: With the new HGX24 CO2 T range, GEA BOCK is expanding its semi-hermetic CO2 compressor range with a specialised focus on transcritical applications in the lower capacity range, the company said through a Press release.

Cooling capacities from 5 to 26 kW and heating capacities from 10 to 48 kW offer flexible stationary and mobile use in applications for supermarkets, commercial and small industrial refrigeration systems as well as for air conditioning and heat pumps in buses and trains, the company said. With their CO2-specific pressure design of up to 150 bar (HP) and 100 bar (LP) and a frequency range of up to 70 Hz, the gas-cooled compressors achieve the highest EER/COP values within their application spectrum – with up to five per cent higher efficiency in standard medium cooling compared to commercially available compressors in this segment. “The new transcritical compressors have proven themselves in extensive internal testing and in numerous field tests with our customers and will be available from February 2021 – equipped as standard with all the necessary features for use with the natural refrigerant R744,” said Manuel Fröschle, Product Manager Natural Refrigerants, GEA BOCK.

The new BOCK HGX24 CO2 T transcritical CO2 compressor (Photo: GEA)

According to GEA, the advantages of the new range for planners, investors and operators include significantly reduced energy and operating costs combined with a long service lifetime with low maintenance requirements, a wide range of applications – from medium- and  low-temperature applications to high-temperature heat pumps – with reliable and flexible part load, as well as excellent low-noise and low-vibration running comfort with a minimal oil  carry over rate. The basis for this, GEA claimed, is a CO2-optimised driving gear design combined with BOCK compressor technology. This includes, for example, the oil pump for a reliable lubrication system even under demanding conditions, including large permissible inclination angles of the compressors.

“Together with the compact dimensions, the low weight of only 116 kg, maximum, as well as standard market connection dimensions, the HGX24 CO2 T set new standards for transcritical economic solutions for smaller performance requirements in stationary and mobile applications,” Fröschle said. “In this regard, they support the fulfillment of important energy and environmental protection requirements, such as the European F-Gas Regulation or the global Kigali Agreement, and meet strict requirements of European standards and ASERCOM guidelines.”

According to GEA, the new range is now also integrated as an additional module in the free online planning and design software BOCK VAP (compressor selection program) and BOCK CO2 Tool (system and compressor selection program).

For special subcritical requirements in low-temperature applications with high operating and standstill pressures, GEA said, the semi-hermetic BOCK CO2 compressor program will offer the specifically designed low temperature cooling variant HGX24 CO2 LT (Low Temperature) with two motor versions from June 2021.

Shecco to host annual trade show on natural refrigerants

BRUSSELS, Belgium, 05 February 2021: Clean Cooling market accelerator, shecco has opened free registration for its second Virtual Trade Show (ATMO VTS 2021) for natural refrigerant and sustainable cooling technologies, the body said through a Press release. The registration page can be found here, it added.

According to shecco, the event, designed for the global refrigeration, air conditioning and heat pump industry, will take place over a 24-hour period, from 10 am CET (Central European Time) March 30 to 10 am CET March 31. The show is designed to fill the physical trade show void, as the world continues to grapple with the COVID-19 pandemic, shecco added.

shecco said it is expecting 5,000-10,000 registrations and more than 100 exhibitors of natural refrigerant products for ATMO VTS 2021. Premium exhibitors so far include Teko, Zudek, ebmpapst, Carel, Alfa Laval and Dorin, it added.

The inaugural ATMO VTS took place from September 1 to 2, 2020, shecco said, adding that it attracted 77 natural refrigerant companies as exhibitors and more than 4,200 attendees from 1,500+ organisations from around the world.

“ATMO VTS 2021 will give that ‘real’ trade show feeling, which is much needed these days,” said Marc Chasserot, CEO, shecco. “The platform allows us to explore different halls, listen to live presentations, and make valuable connections with customers and suppliers from all over the world.

“In addition to some great exhibitors, with more signing-up each week, we’ve made some big changes, including new Product Innovation Awards and 24 hours of live webinars, including panel discussions, so that everyone, no matter where you are in the world, can listen live to some key discussions from cooling thought leaders.”

The live webinars will include presentations on shecco’s first Annual Report on the natural refrigerants industry, global training, the new EU F-Gas Regulation update and food retail experiences from around the world.

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