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  • Two-stage indirect glycol and CO2 commercial system drastically cuts refrigerant use

    An award-winning store, that reduces refrigerant use by 98%, and eliminates HFCs, was recently opened in Folsom, CA, USA.

    • Publication date : 2012/06/05
  • An ejector refrigeration system optimised for sub-zero temperatures on fishing vessels

    Large amounts of diesel fuel are used to power fishing vessels engines and on-board refrigeration systems. In a recent theoretical study, an energy-efficient sub-zero refrigeration system proposed based on a...

    • Publication date : 2021/05/31
    • Subjects: Technology
  • Great potential for solar district cooling in Saudi Arabia

    A recent modelling compares the performances of a two-stage and a single-stage absorption chiller in a solar district cooling system in Riyadh, Saudi Arabia.

    • Publication date : 2018/12/27
    • Subjects: Developing country
  • Kenyan fish processing facility upgrades from R22 to ammonia

    East Africa Sea Foods (EASF), a fish processing facility in Kenya, recently replaced its aging R22 refrigeration system with a two-stage ammonia system.

    • Publication date : 2020/04/05
    • Subjects: HFCs alternatives, Developing country
  • Development and evaluation of a reversible CO2 residential air conditioning system compared to a state-of-the art R410a unit

    This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). A reversible CO2 prototype RAC split unit system was designed, built and installed in two calorimetric test chambers. The unit is based on the Lorentzen Cycle...

    • Publication date : 2004/11/24
  • Briefs: Largest distribution centre in Africa

    The centre, built by Woolworths in Midrand, South Africa has a surface area of 72 000 m². The 2-stage refrigeration system uses 4.2 tons of ammonia. It operates at -9°C/+32°C on the low stage while the high-stage ammonia circuit is used to chill...

    • Publication date : 2008/02/12
  • High efficiency, low carbon supermarket refrigeration

    This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). A new but simple high efficiency refrigeration system design suitable for use in supermarkets has been developed based on standard components so that...

    • Publication date : 2004/11/24
  • New solar-cooling technology for cooling-freezing

    Refrigeration is often based on compressor technology which consumes electricity. A recently developed system making it possible to achieve relatively low temperatures solely using solar energy has been designed by PROMES, a laboratory working...

    • Publication date : 2007/05/04
  • Star in the Shetlands: Star Refrigeration

    Star Refrigeration, a corporate member of the IIR, has equipped Shetland Catch Ltd. with new blast-freezing equipment, raising the capacity from 200 to over 750 tonnes per day. Shetland Catch's plant near Lerwick is now probably the largest...

    • Publication date : 2004/11/10
  • Marine refrigeration

    The use of natural refrigerants is gradually spreading. Here are two examples of their use in the marine sector: - Environmentally-friendly fish transport American Freedom is one of the world's largest refrigerated ships and can hold up to...

    • Publication date : 2007/11/20
  • Out of ordinary: Skiing under a hot desert sun

    What has been referred to as one of the "biggest refrigerators in the world", Dubai's indoor winter sports centre, designed by Acer Snowmech Consultants, spans 170 000 m3, defying nature and a stifling hot desert sun. In order to create an ideal...

    • Publication date : 2005/10/26
  • H2 update: Linde

    Linde recently opened the world's first hydrogen filling station for fuel cell passenger ships in Hamburg. The Zemship filling station provides fill-ups of hydrogen gas for this "zero emissions ship". The first passenger ship for 100 people to be...

    • Publication date : 2009/02/25
  • Ultracold polar molecules

    Scientists at JILA, a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder (CU-Boulder), have applied their expertise in ultracold atoms and lasers to produce the first high-density...

    • Publication date : 2008/10/22
  • Cryogenic applications: Cooling largest outer-space telescope

    In his presentation on cryogenics applications at the IIR-AFF centenary conference in Paris (see Focus), Philippe Lebrun, President of the IIR's Section A, mentioned cryogenic detectors of cosmic signals and cited Herschel probe as an example. The...

    • Publication date : 2008/08/12
  • World AC and compressor trends

    In its recent report, JARN estimates that the HVAC&R market in 2006 was about 66 billion USD and about half of sales were air conditioners and related products. - Regarding the AC market, China, the US, Japan and major European countries make...

    • Publication date : 2007/05/04
  • For IIR members only

    Ice cream manufacturing, environmental impact and market data

    From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...

    • Last update : 2022/10/12
    • Langues : French, English
    • Themes : Ice creams
  • Hydrocarbon refrigerants

    Hydrocarbons such as R290 (propane), R600a (isobutane) or R1270 (propene/propylene) are low GWP non-toxic natural refrigerants with excellent thermodynamic properties. They offer an...

    • Last update : 2022/06/22
    • Langues : French, English
    • Themes : Hydrocarbons, Containment, refrigerant charge reduction
  • Liquefied Natural Gas: production process and cold energy recovery

    Liquefied natural gas (LNG) is natural gas that has been cooled to about -160 °C and turned into a liquid to facilitate transportation and storage. A typical LNG supply chain...

    • Last update : 2022/06/20
    • Langues : French, English
    • Themes : LNG and LPG
  • Additive manufacturing of heat exchangers

    In the refrigeration industry, additive manufacturing (colloquially referred to as “3D printing”) makes it possible to fabricate novel, complex and potentially more energy efficient...

    • Last update : 2022/09/07
    • Langues : French, English
    • Themes : Evaporators, condensers and other heat exchangers
  • Additive manufacturing of regenerators for caloric cooling

    In many areas of engineering, additive manufacturing allows the production of complex and multifunctional products that could not be manufactured using traditional methods. In the...

    • Last update : 2022/09/16
    • Langues : French, English
    • Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)