FEATURE REPORT PRODUCT NEWS
Bitzer
Food manufacturers with large cooling requirements can now harness the full benefi ts of environmentally friendly carbon dioxide-based refrigeration following the release of Bitzer’s high capacity Ecoline CO2 compressor. The new 8-cylinder
reciprocating compressor for transcritical CO2 applications delivers outstanding energy effi ciency and ultra-low Global Warming Potential (GWP) in a compact footprint that is easy to integrate on site. In the past, high cooling loads could only be delivered with
transcritical CO2 systems by using multiple smaller compressors to achieve the desired refrigeration output. The new large 8-cylinder Ecoline compressor enables large cooling loads to be met with a single unit, saving space, improving energy effi ciency and performance, and simplifying service and maintenance. Kevin Glass, managing director of Bitzer UK, said: “Using
transcritical CO2 in large refrigeration systems has a number of advantages. It’s a natural, non-toxic refrigerant which enables compact system dimensions, while future-proofi ng operators against changes in F-gas regulations, thereby ensuring regulatory compliance and protecting capital investment.” He added: “The new 8-cylinder unit brings all these benefi ts together in a single, compact package that is even more energy effi cient. For food manufacturers with large cooling loads, it’s an excellent all-round solution.” The new 8-cylinder Ecoline CO2 unit is around 10% more energy
effi cient than smaller 6-cylinder compressors currently available, reducing energy consumption and emissions, and cutting running costs throughout the lifetime of the equipment. Bitzer 8-cylinder CO2 compressors are available in two motor variants with displacements between 69.4 and 99.2 m3/h. They are also equipped with Varistep mechanical capacity control for higher effi ciency at part load operation. Despite its size, the new 8-cylinder compressor has relatively
low current demand on start-up, and is designed to deliver low gas pulsations to minimise vibration. Improvements in internal gas guidance minimise internal pressure drops, while oil carry over rate achieves the low values typical of Bitzer.
www.bitzer.de/shared_media/documentation/kp-130-11-en.pdf
Mitsubishi Electric
We all spend an average of 90% of our time indoors, so ensuring the air inside buildings is fresh and clean is vital for our health. Dangerous pollutants like particulate matter and carbon monoxide are found indoors, and outdoor pollutants like nitrogen dioxide can also enter buildings from the outside. To combat their potential negative eff ects on health, equipping offi ces, schools, shops and more with the technology to support good air quality is essential. This is why Mitsubishi Electric has upgraded its trusted
fl agship Lossnay ventilation range with the new LGH-RVX3-E system designed specifi cally for the UK’s commercial buildings. The units are designed to extract stale indoor air continuously and effi ciently, and replace it with fresh fi ltered air from outside. With heat recovery, the system also minimises the amount of energy lost by recovering the heat from the extracted air and transferring it to the supply of fresh air. The new system features a host of improvements to enhance performance, effi ciency and versatility – all while reducing running costs. The units can now be installed vertically for the fi rst time, to allow for use in more spaces and make quality ventilation accessible to a wider range of buildings. Enhanced controls, with fi ve diff erent levels, allow for optimal
effi ciency, and fan speeds can also be adjusted in 5% increments to use less energy where possible and comply with Part L. The system is also designed to operate at ultra-low noise levels, to provide a comfortable environment for every building occupant, from offi ce workers to hotel guests. A built-in automatic summer bypass also allows the RVX3 units to bring in fresh air from outside without recovering heat during hot weather, in order to reduce the risk of offi ces, gyms or other commercial spaces overheating. With 100% airfl ow still operating during bypass mode, the same volume of air is brought in – while staying cool.
The addition of optional CO₂ sensors from Mitsubishi Electric also allows for automatic incremental fan control, and the sensors can optimise effi ciency by managing the RVX3 system to react to the air quality. The sensors are directly powered by the RVX3 unit, so no additional power supply is required.
les.mitsubishielectric.co.uk
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www.acr-news.com • July 2023 35
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