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GERMANY:  Following an extensive qualification program, compressor specialist BITZER has announced approval of the R1234yf and R1234ze(E) HFO refrigerants for its CSH and CSW screw compressors. The two alternatives to R134a have a global warming potential (GWP) of under ten, while the GWP of R134a is around 1,400. With a GWP of about 600 each, the HFO/HFC blends R513A and R450A are also approved for the CSH and CSW series. Unlike the pure HFO refrigerants, they’re nonflammable.

The requirements stipulated by the EU’s F-gas Regulation no. 517/2014 also represent a huge challenge for manufacturers of refrigeration compressors. In order to meet the phase-down objectives, alternative refrigerants such as hydrofluoroolefins (HFOs) will have to be used in the future. The volumetric refrigerating capacity and pressure levels of R1234yf are comparable with those of R134a, while the capacity figures and pressure levels of R1234ze(E) are around 20 to 25% lower. BITZER subjected the R1234yf and R1234ze(E) refrigerants in this group to intensive testing, and the compressors performed well with both in all of the tests and laboratory experiments. The tested compressors achieved nearly identical isentropic efficiency values with R1234yf and R1234ze(E) as with R134a. Due to differences in the thermodynamic properties, the COP measurement results are in some cases slightly lower.

BITZER subjected the R1234yf and R1234ze(E) refrigerants to intensive testing, and the compressors performed well with both in all of the tests and laboratory experiments (CSW shown here)Both of the HFOs are suitable for air conditioning and medium temperature applications in particular, as well as for heat pumps. There’s often a degree of uncertainty regarding flammability. In safety data sheets, R1234ze(E) is listed as nonflammable, though this only applies to transport and storage. When used as a refrigerant, a higher reference temperature of 60°C is applied in flammability tests. At this temperature, R1234ze(E) is flammable and therefore assigned to the A2L safety group, just like R1234yf. For this reason, a risk assessment in accordance with the ATEX Directive is required for systems with both refrigerants – with potential consequences in the system design. BITZER compressors for HFO refrigerant fulfill the relevant requirements, making additional evaluation unnecessary.

HFO/HFC blends such as R513A and R450A, on the other hand, are nonflammable and therefore classified in the A1 safety group. Using them requires nothing more than a conventional risk assessment in accordance with the Machinery Directive. However, the substitutes R513A and R450A have a GWP of around 600.

After evaluating all of the results, BITZER has announced approval of the HFO refrigerants R1234yf and R1234ze(E) and the HFO/HFC blends for CSH and CSW compact screw compressors. These tried-and-tested products can be operated with the standard ester oil charge (Y-model) with HFO refrigerants in the documented applications.

Detailed technical descriptions with performance data and application limits can be found in the SP-171-3 (CSH) and SP-172-6 (CSW) documentation. The corresponding data will be provided in the BITZER software in due time.

CSH and CSW: high energy efficiency

The universal CSH and CSW compact screw compressors can also be used with the economizer circuit to further increase refrigerating capacity and efficiency. They’re fitted with dual capacity control and can be adjusted infinitely or according to scale. The level of energy efficiency is a benchmark in this compressor technology in both full-load and part-load operation.

CSH compressors demonstrate their strength particularly in air cooled liquid chillers for comfort air conditioning and in heat pumps. The CSW series is suitable for use in liquid chillers operated at low condensing temperatures. The compressors are used in systems with water cooled condensers, process cooling and systems with air cooled condensers operating under moderate climatic conditions.

UK:  From March 7th, FG Eurofred will trade under its new name, “FUJITSU GENERAL AIR CONDITIONING (UK) LIMITED”

Says Ian Carroll, Sales and Marketing Director : “The new name gives us the opportunity to underline what’s important to our customers. Brand recognition backed by renowned FUJITSU quality.

This decision removes any confusion about our name and reaffirms our commitment to the UK as it has become clear that not having the highly recognisable name ‘FUJITSU’ in our company title has not made the most of an extremely strong world-wide brand.

“We have so much to shout about this year which happens to coincide with the 30th anniversary of FUJITSU GENERAL LIMITED starting its air conditioning business in the UK.”

Germany. The compressor specialist BITZER has made operating its BITZER Electronics Service Tool (BEST) even easier: users can now watch a video explaining how to use the tool on the BITZER website and on the video platform YouTube. Refrigeration and service engineers can quickly and easily operate all BITZER IQ products from their PC using the BEST software.

In the almost five-minute-long video, an English-speaking narrator explains the tool and its most important functions. The software provides users with a complete overview of the operating status, troubleshooting and maintenance of BITZER products. BEST makes service engineers’ work much easier: for example, they can use it to quickly and safely set device parameters, analyse errors or download and save data logs.

The software supports VARISPEED reciprocating compressors, CSV compact screw compressors, the ECOSTAR condensing units LHV5E and LHV7E, as well as the protection, monitoring and control devices SE-i1 and CM-RC-01.

The BITZER Group is the world’s largest independent manufacturer of refrigeration compressors with sales companies and production sites for reciprocating, screw, and scroll compressors as well as pressure vessels all over the globe. In 2014, 3,400 employees generated sales of €657 million.


Global air conditioning giant Gree is set to challenge the status quo in the UK HVACR market with the launch of Gree UK Limited.

Part of the Calibre Services Group (alongside established acr specialists Klima-Therm, LH plc and Next Controls), Gree UK will supply the manufacturer’s full range of splits, VRF, heat pumps, chillers and award-winning photovoltaic-powered systems across the UK.

The company has already secured orders with national air conditioning specialists and has many active enquiries in the pipeline for major projects.

Gree is the world’s largest air conditioning manufacturer, with sales of more than £16bn and employing more than 8,000 research and development engineers in 570 laboratories and five research institutes across the world.

The company’s success has been built on a continuous stream of innovation, resulting in more than 20,000 technology patents, nearly 7,000 invention patents and some 300 million users of its air conditioning systems worldwide.

Roberto Mallozzi, managing director of Gree UK LtdRoberto Mallozzi, managing director of Gree UK Ltd, said: “In a lifetime of experience of this industry, Gree is one of the most impressive and innovative air conditioning manufacturers I have ever encountered. The name may not be that well known in the UK at present, but that is something we intend to change.

“One in three air conditioning systems produced in the world today is manufactured by Gree, a measure of the company’s commercial success and seriousness as a global player. The fact that Gree manufactures for most of the world’s premium air conditioning brands says a lot about its quality credentials and approach, and its high standing even among competitors.”

Gree’s range covers all main air conditioning and heat pump technologies, from mobiles and small splits for domestic and light commercial applications, through VRF heat pumps, up to large centrifugal chillers with several megawatts of cooling capacity.

Gree’s range covers all main air conditioning and heat pump technologies, from mobiles and small splits for domestic and light commercial applications, through VRF heat pumps, up to large centrifugal chillers with several megawatts of cooling capacity.

The company is investing heavily in the development of renewable and energy efficient systems. Its pioneering PV-powered, inverter-driven centrifugal chiller has won a string of awards for its ability to generate cooling from sunlight, and feed power directly into the grid.

Gree UK is backing the launch with substantial investment in stocks for immediate availability, a comprehensive spare parts service and a generous warranty scheme giving buyers peace of mind.

Gree UK has its own dedicated sales, technical and administration headquarters near London, and is currently recruiting additional staff for support positions. It includes a showroom and full training facility to demonstrate equipment and train engineers to install and commission Gree technology.

It is planning to install working examples of PV-powered cooling systems, to demonstrate the practicality of solar-powered cooling in UK conditions.

A key element of the Gree philosophy is the move from “Made in China” to “Created in China”. To this end, the company manufactures many key air conditioning components itself, and operates nine manufacturing plants. It produces some 60m residential air conditioners and 5.5m commercial systems a year.

Gree air conditioning smart split unit

The company has an eye-watering research and development budget, spending upwards of £500million each year, with full CE, UL and TUV certification for its products.

Roberto Mallozzi said: “We believe that the Gree offer - an unrivaled combination of quality and technical excellence coupled with highly attractive pricing - will prove to be a winning formula in the UK.

“It gives contractors and end users a highly cost-competitive option without compromising on quality or features. Indeed, the quality, styling and technical specification of Gree units is in some cases ahead of the market, making the competitive pricing even more attractive.”

He added: “Backed by the market knowledge and technical experience of sister companies Klima-Therm, LH and Next, UK buyers have the reassurance that Gree will deliver for them. If the premium air conditioning brands put their faith in Gree, so can they with full confidence.”

For more details, call Roberto Mallozzi on 020 3376 3533 or visit

Related articles:

Gree solar-powered air conditioning now available in UK

GREE launch World’s first Solar VRF Air Conditioners

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UK:  New low temperature chiller with heat reclaim cuts energy costs and adds capacity for process project.

Cool-Therm has installed a high efficiency low temperature process cooling chiller with heat recovery at a leading metal finishers, enabling the company to increase production while saving around 40per cent on its cooling energy bill.

The end user, which specialises in high-tech surface treatments for engineering, commissioned the new cooling plant as part of a replacement and upgrade project at its UK processing facility.

The new system is based on a Geoclima GHA low temperature chiller, which combines high performance screw compressors and EC axial fans. The chiller is used to cool acid as part of an electroplating process.

The corrosive environment had taken its toll on the previous chiller, and a temporary chiller had been installed until a permanent solution could be designed, built and commissioned.

An additional key requirement was to increase cooling capacity, as part of a planned expansion in production at the site. This required cooling capacity of at least 240kW, with a strict electrical load limit of 200A due to limitations on power at the site.

Cool-Therm Consultants worked closely with the customer on a design to meet the brief. The chiller had to supply water at -10deg C to a holding tank with very smooth and constant delivery, requiring very accurate pump and tank water level control.

A further requirement was automatic peak-limiting of electrical load to ensure power consumption never exceeded the site limit. The client also specified remote monitoring and heat recovery for use in heating the factory, as part of a drive to reduce energy costs.

3 D Air Sales is part of the HRP Group, with Service Centres providing nationwide coverage for distribution and stock holding of all Mitsubishi air conditioning and heat pump systems

Once the design was agreed, tests were carried out by a combined team from Cool-Therm and the end users, to ensure the proposed solution would deliver the conditions required and perform as anticipated from day one.

The chiller was installed in a staged process. The complex water pipework from the chiller to the tank, and the tank to the manufacturing process, was completed in a fast-track procedure over a long weekend to avoid any loss of production. To help meet the challenging deadline, Cool-Therm used a pre-insulated ABS pipework system.

The primary pump is housed within and controlled by the chiller, and maintains the chilled water level in buffer tanks with mm accuracy. Delivering the requirement to achieve 245kW of cooling capacity while keeping within the 200A full load limit was achieved through a combination of enhanced control and technology.

Rob Young, who headed the project for Cool-Therm, says: “We overcame the power limiting factor by adapting control of the compressor’s slide loading mechanism via current rather than position. This, coupled with the use of a generously sized condenser coil, enabled us to deliver the capacity headroom while remaining within the load limit.”

It is believed to be the first project of its kind with such a highly variable flow evaporator and primary water circuit based on screw compressor technology. 

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UK: Beijer Ref UK and Ireland supply partners recently celebrated the company's 2015 success at the annual supplier dinner held in Stockport. A popular informal event where the winner of the Mark Gardner Supplier of the year award is announced.

Before his untimely passing in 2012 Mark was the Finance Director of Dean & Wood and business partner of Beijer Ref UK and Ireland Managing Director John Billson who said " The award is a lasting memory of Mark's contribution to the business" Sauermann were the winner of the award for 2015 and one of the reasons given was that "Sauermann went far beyond the extra mile identifying growth opportunities for the group”

Picture: Beijer Ref UK and Ireland Managing Director John Billson (right) with Sauermann UK Managing Director Ernie Bate.

3 D Air Sales is part of the HRP Group, with Service Centres providing nationwide coverage for distribution and stock holding of all Mitsubishi air conditioning and heat pump systems

UK:  Cool-Therm, the expanding chiller and air conditioning specialist, has launched a new fully responsive website, complete with an online chiller sizing and selection facility.

It gives system designers, contractors and end users a quick and convenient way of pinpointing the correct chiller to meet the requirements of a particular project. The user inputs basic data for the application, and it produces a recommended chiller model and specification.

The site has useful new sections, including case studies on chiller applications in commercial air conditioning, data centre cooling and industrial process applications.

The company’s award-winning Turbomiser is featured in video form, with a  detailed insight into its energy and carbon-saving potential. Case studies highlight how the ultra-low energy chiller is contributing to significant savings in running costs in a wide range of applications across the UK.

There is information on the range of services provided by the recently launched Cool-Therm Consultants, which include TM44 energy surveys, F-Gas compliance support, bespoke design service, and advice on refrigerant selection and replacement.

Cool-Therm - new website Homepage copy

In additional to air conditioning for mainstream applications in commercial and government premises, Cool-Therm has a growing portfolio of projects involving data centres and industrial process cooling. The new website has an area enabling visitors to download brochures and press releases showing examples of recent work in this expanding field.

Ken Strong, managing director, said: “Quick access to up-to-date information and support has never been more vital in business. The new website is designed to grow and expand over time, and be as useful to use from a desktop PC as a smart-phone by an on-site field engineer.

“The chiller sizing facility, in particular, offers a quick way to make a chiller selection. We can then validate and confirm the specification, and make sure it will meet all the requirements of a project.”

To view the new website, visit:


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UK:  The first ever ASHRAE Section in the UK has been formed with Steve Gill as President, and Edward Murphy as President-Elect. The ASHRAE UK-Midlands Section is located in Central England covering the counties of Cambridgeshire, Yorkshire, Northamptonshire, Leicestershire, Nottinghamshire, Derbyshire, Bedfordshire, Lincolnshire, Warwickshire, Staffordshire, West Midlands, Huntingdonshire and Rutland.

Steve Gill said, “Like many in this industry, I have been a member of ASHRAE for many years but only really became active when I was living overseas and joined the Singapore Chapter.  ASHRAE has such a lot to offer that it was disappointing that there was no local group in the UK. When I heard that Dennis Loveday at Loughborough University was interested in forming an ASHRAE group I was immediately very enthusiastic and keen to help get it launched.

“We were keen that the new group offered a meeting point without the need to travel to London. There are a large number of current ASHRAE members living in the Midlands area so it seemed the ideal geographical location.  The region also invitingly benefits from having a number of leading Universities so arranging interesting guest lectures and papers will attract students too."

Steve added, “The group is still very much in its infancy and we would like to invite more ASHRAE members to become involved. We are looking for committee members in a variety of roles to help us take this forward. The next meeting is on Thursday 8th at 5pm at Loughborough University. This is a great opportunity for UK ASHRAE members to become actively involved, perhaps for the first time.  I look forward to meeting with them.”

Steve is currently also President Elect of the Institute of Refrigeration, becoming President in April 2016 feels that this is an opportunity for the two bodies to forge closer links. Steve said “I am not the first IOR President to also be a member of ASHRAE but with the formation of the new ASHARE UK Section, this gives us a unique opportunity to work together”.  

The new ASHRAE Section was officially inaugurated in the summer at Loughborough University by ASHRAE Past President Professor Bill Bahnfleth and Professor Dennis Loveday.

Left to right: Yi Zhang, Edward Murphy (President-Elect), Dennis Loveday (Founding President),  Steve Gill (President),  Victoria Haines, Brian Sensecall.

Left to right: Yi Zhang, Edward Murphy (President-Elect), Dennis Loveday (Founding President),  Steve Gill (President),  Victoria Haines, Brian Sensecall.

ASHRAE, founded in 1894, is a global society advancing human well-being through sustainable technology for the built environment. The Society and its more than 54,000 members worldwide focus on building systems, energy efficiency, indoor air quality, refrigeration and sustainability. Through research, standards writing, publishing, certification and continuing education, ASHRAE shapes tomorrow’s built environment today.

To find out more visit

If anyone would like more information, please contact Steve at or Karen Chadwick at


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PRODUCTS:  Less than a year after its launch, a new transactional website enabling engineers to purchase chiller spares online has proved to be a multi-million-pound success for Johnson Controls.

The EasyParts website enables engineers to purchase major spare parts such as compressor rotors, valves and motors online. Top selling items like oil filters, sensors and chiller safety devices are all easily accessible.

John Pritchard, Parts Director HVAC & R said: “The aim in setting up the service was simple - to make it as easy as possible for engineers and maintenance companies to order genuine replacement parts for York brand chillers online. It has worked incredibly well, and we are pleased with the rapid take-up.”

Online chiller parts ordering has taken off with Amazon-type site for the refrigeration and air conditioning industryFor engineers, there are several benefits of ordering online. The site gives 24/7 access to spares with expedited delivery, important in situations where plant has suffered a breakdown. Orders placed before 2.30pm can be delivered next day.

Users can see real-time stock levels for replacement components, and the 

current status of orders, enabling engineers to track deliveries. It also provides access to order history and associated paperwork, such as invoices.

Importantly, the site uses photographs of spares to provide visual confirmation of the relevant part. It includes pictures for most of the company’s 15,000 active lines of stock.

John Pritchard, Parts Director HVAC & Refrigeration at Johnson Controls“We wanted to create an Amazon-type site for the air conditioning and refrigeration industry. This is now part of everyday life, and most people are familiar with it and comfortable using it,” says John Pritchard.

The site is underpinned by a huge knowledge bank, containing details of most of the components used in the manufacture of York brand chillers since production began. The database contains some 200,000,000 individual records, taken from the Bills of Materials (BOMs) for York chillers.

These contain detailed engineering data and component lists for every machine made. Chillers are identified with a unique serial number, printed on the data plate inside the chillers’ controls cabinet. There are believed to be around 10,000 York chillers installed in the UK and many more further afield across Europe.

The site is designed to be dynamic and grow over time. As new chillers are manufactured and installed, the knowledge base is constantly updated.

“We began with information on chillers made in the original York Basildon plant, and then expanded to include machines made at other factories across the globe. That process is continuing as we build the knowledge bank,” says John Pritchard. “It is an ongoing project, and as the database expands it becomes evermore useful for customers.”

Johnson Controls provides training in the use of the system at its Basildon site, or on-line, and will also be demonstrating how it works to visitors at the forthcoming ACR Show 2016, taking place at the NEC from 16 to 18 February 2016.

The website is located at


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UK:  Carrier Rental Systems (UK) Ltd, the UK’s leading temperature control hire specialist, has introduced full Building Energy Management System (BEMS) capability for its fleet of chillers, enabling chillers on temporary cooling duty to be fully integrated into a building’s existing control system.

The addition of BEMS capability to temporary chillers enables the customer’s existing BEMS to automatically control the machine and send signals for run, fault, remote on/off. It also allows end-users to optimise chiller performance for occupant comfort and energy consumption. It will particularly benefit temporary cooling projects in complex and critical applications such as hospitals, data centres, manufacturing industry and large commercial offices.

“Traditionally, rental chillers operate as stand-alone units, independent of existing heating, ventilation and air conditioning systems,” says Marc White, director, Carrier Rental Systems. “With the addition of the new BEMS capability, temporary unitsm can be fully integrated into a building’s existing systems and work seamlessly to optimise building control and energy efficiency.”

A temporary cooling system operating independently, without BEMS capability, may work in opposition to existing heating, ventilation and air conditioning systems (HVAC) systems, which can incur a large energy penalty and result in high running costs.

The company’s solution is to offer a new range of hire chillers with full BEMS connectivity built in, enabling them to be linked into the existing building system and come under its overarching supervision.

“Today’s buildings have intelligent, algorithm-based controls designed to integrate the operation of the existing HVAC system. The arrival of a stand-alone temporary chiller can have a negative impact on the carefully calibrated balance of the system, particularly as the temporary chiller is often a replacement for an existing chiller that is either being repaired or replaced – and therefore offline,” said Marc White.

The new approach addresses and overcomes this problem, offering end-users and building managers a significant additional benefit to maintain overall building performance, optimise occupant comfort, and minimise running costs and environmental impact during chiller rental periods.

A Carrier chiller with onboard BEMS capability was deployed recently as part of a temporary cooling project at a hospital in Northern Ireland. It enabled the chiller to be fully integrated within the hospital’s central building control and monitoring system, ensuring conditions were maintained within required limits for patients and staff in medical wards and operating theatres.

The company’s new chiller fleet with full BEMS capability is available nationwide for hire, for a variety of commercial applications.

For more details contact: Carrier Rental Systems on 0800 026 4717, email, or visit


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