FEATURE REPORT PRODUCT NEWS Looking for reliable Thermostatic Expansion Valves?
Wide range of 150 different models of RFKH valves with exchangeable orifice
R455A/R454C Low temperature range MOP A2L
Find your local Sanhua dealer
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Bundy Refrigeration
Bundy Refrigeration has developed a maintenance-free condenser and evaporator that will reduce the cost of running a refrigeration appliance, offering huge savings on energy
bills and maintenance costs for customers operating commercial refrigerators on a large scale. Independent tests have confirmed that the company’s aluminium wing tube (AWT) condenser led to a reduction of kilowatt-hour (kWh) energy consumption on a commercial refrigerator from 6% up to 15% compared to forced draft condensers based on traditional technology (wire-on-tube), depending on whether a simply competitive or a fully optimised AWT configuration is applied; and in either case with a footprint reduced by about half. As refrigeration units run more efficiently with AWT technology, manufacturers can improve the energy class of their products, making them more attractive to cost-conscious buyers. The compact design of AWT condensers also means they can modify their refrigeration models, reducing the overall dimensions of the condensing unit box, to give end-users more storage capacity. Condensers cool refrigerant so that it turns refrigerant gas back into a liquid as part of the refrigeration cycle. However, the real working environment is generally unclean and traditional condensers are prone to dust clogging, which reduces efficiency and affects performance. In turn, undue stress builds up on the compressor, which means it works harder, using more electricity and shortening the lifespan of the refrigerator. In some cases, the dust build-up can be so severe that it causes the appliance’s compressor to overheat and shut down. The robust AWT condenser is also kind to the environment. Made
100% from aluminium alloy with no prospect of electrochemical corrosion, the AWT condenser is environmentally friendly with easy end-of life recycling options – no need to separate materials. With fewer brazed joints than traditional condensers, the production process virtually eliminates the need to rework due to leakage at brazed joints. AWT condensers and evaporators come in a wide range of configurations, with varying tube sizes, 4-, 6- and 8-mm diameter, in widths from 150-mm up to 420-mm, with modular heights up to 20 rows of tubes and depths up to eight ranks. Additionally, Bundy has the capability to design units to meet specific customer requirements..
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www.bundyrefrigeration.com
Toshiba
The latest generation of Toshiba’s flagship Variable Refrigerant Flow (VRF) system, SHRM Advance, operates on lower Global Warming Potential (GWP) R-32 refrigerant. The combination of R-32’s lower GWP and reduced refrigerant charge enables SHRM Advance to deliver a significant reduction of up to 80%* in equivalent carbon emissions. This all-new VRF system gives end-users an ultra-efficient, high- quality cooling and heating solution, enabling office buildings, large shops and restaurants, healthcare facilities, and educational establishments to achieve best-in-class sustainability credentials, while reducing running costs. The new VRF system incorporates technical innovations that help enhance comfort performance and energy efficiency. These include the ability to select either three-pipe heat recovery or two-pipe heat pump operation, a new twin-rotary compressor with liquid injection, split heat exchanger, sub-cooling plate heat exchanger, a new high performance fan motor, and a unique thermodynamic circuit, all contributing to class-leading efficiency of SEER up to 8.9 and SCOP up to 4.67. For system designers, a new generation of innovative flow selectors with up to 12 ports gives enhanced flexibility and optimises the ability of SHRM Advance to deliver simultaneous cooling and heating. This is controlled automatically, enabling seamless energy transfers between areas of the building requiring heating and cooling, ensuring a comfortable and productive indoor environment at all times, whatever the weather outside. An advanced heat recovery function provides heat to the indoor unit with minimal input from the condensing unit, further improving energy efficiency and helping to minimise carbon footprint. If required, SHRM Advance can also be customised to operate as a two-pipe heat pump system.
For installers, the fully packaged SHRM Advance is available in 8 to 24HP capacity units, giving flexibility to meet the needs of any commercial building project. A new compact chassis height of just 1.69m helps integration on site, while it is possible to connect up to 69 indoor units per system. A full range of 13 different types of indoor unit are available, from 0.3 to 10HP capacity. As well as conventional indoor units, SHRM Advance is available with a fresh air ventilation duct and a medium temperature water module.
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www.toshiba-aircon.co.uk
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www.acr-news.com • October 2022 31
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