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  • China: expanding electronic expansion valve market

    Electronic expansion valves are mainly used in inverter air conditioners to automatically adjust refrigerant flow to achieve better energy-saving performance. This technology is one of the 30 key energy-saving technologies promoted by the Chinese...

    • Publication date : 2011/06/08
  • World's smallest electronic expansion valve

    Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.

    • Publication date : 2020/07/01
  • Briefs: First MAC system using an ejector

    Denso Corporation has developed the world's first passenger mobile air-conditioning system that uses ejector technology. The ejector, which is a small refrigerant injector, was installed on the new Prius introduced by Toyota in May 2009. According...

    • Publication date : 2009/08/13
  • 2005 AHR Expo Innovation award winners

    The winners of the third annual AHR (Air Conditioning, Heating and Refrigeration) Expo Innovation awards will be honoured during a ceremony during the 2005 AHR Expo in Orlando, Florida, on February 8, 2005. The product entries were judged for...

    • Publication date : 2004/12/22
  • CO2 supermarkets: Tesco

    Designed as Tesco's first zero-carbon store, the new store at Ramsey, Cambridgeshire, UK, is completely HFC-free. The supermarket is hence using natural refrigerants CO2 and hydrocarbons throughout its refrigerators, freezers, heating, ventilation...

    • Publication date : 2010/05/27
  • Magnetic-bearing centrifugal compressors

    This new compressor technology - presented at the 2003 AHR Expo in Chicago - may have a significant effect on the future of mid-range chillers and rooftop applications in water-cooled, evaporatively cooled and air-cooled chilled-water and...

    • Publication date : 2004/07/27
  • LNG Overview

    LNG tankers China will produce 5 more LNG tankers. The first Chinese-built LNG tanker was built last year and the second one was launched in Shanghai in June 2006: it cost 160 million USD and can carry 147 000 m3 of LNG at -163°C during...

    • Publication date : 2006/11/15
  • Transcritical CO2 system with ejector saves energy

    Since July 2013, the first installed and operating transcritical CO2 system with ejector has registered 15% energy savings by reducing internal losses.

    • Publication date : 2014/08/28
  • New low GWP replacement for R404A in hermetically-sealed systems

    A new lower GWP replacement for R404A, which blends an HFO and an HFC with a “natural” refrigerant is to be made commercially available next year.

    • Publication date : 2015/12/06
  • Honeywell tests new R404A replacement

    Honeywell has been testing a new low-GWP refrigerant as a potential replacement for R404A in hermetically-sealed refrigeration systems

    • Publication date : 2014/09/24
  • Faults and energy consumption of CO2 refrigeration systems in supermarkets

    Food products refrigeration accounts for the largest share of energy consumption in supermarkets. In a recent study, the most common faults in supermarket CO2 refrigeration systems were investigated,...

    • Publication date : 2021/06/29
    • Subjects: Figures, economy, Technology
  • Heat pump systems for HVAC in electric vehicles

    Heat pump systems offer an energy efficient option for HVAC in electric vehicles. Recent studies present innovative technologies to further improve the heating and cooling performance of heat pump systems as...

    • Publication date : 2021/01/27
    • Subjects: HFCs alternatives
  • Reduce refrigerant leaks in supermarkets

    Refrigerant leaks are a recurring problem, particularly in the commercial refrigeration sector. An American initiative aims to identify the main causes of leaks and to propose solutions to reduce...

    • Publication date : 2021/12/15
  • Two-phase ejectors: a high potential for energy savings

    Two review papers recently published in the IJR highlight ejectors as a promising solution to dramatically improve the efficiency of vapour compression refrigeration systems and outline the challenges that...

    • Publication date : 2020/11/27
  • Ionic liquids in combination with CO2: promising technology?

    A group of scientists at the University of Notre Dame, Indiana, USA, are now working on utilizing novel ionic liquids – pure salts that are liquid at ambient temperatures – in tandem with CO2.

    • Publication date : 2013/12/03