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  • Brief: R-723

    The new natural refrigerant blend R-723 presents the same advantages as ammonia (i.e. high specific evaporation heat and insignifigant GWP) and offers further benefits: it can be used in copper systems and offers full mineral oil solubility. R-723...

    • Publication date : 2005/02/11
  • Briefs: A comeback for Einstein’s fridge?

    Scientists at Oxford University have rebuilt one of Einstein's early inventions in an attempt to develop an environmentally friendly refrigerator that runs without electricity. They have built a prototype of a fridge patented in 1930 by Einstein...

    • Publication date : 2008/10/25
  • Briefs: solar air-conditioning prototype

    As part of the European programme Solera, CEA LITEN researchers recently set up a 4.5-kW solar air-conditioning prototype in the facilities of the INES (French National Institute of Solar Energy) in Chambéry in the French Alps, where the system...

    • Publication date : 2009/12/09
  • Micro-refrigeration

    Future computer chips will probablly generate 10 times more heat than today's microprocessors and will require new types of cooling systems. Currently, computers are usually cooled thanks to fans and small finned devices called heat sinks, but the...

    • Publication date : 2008/08/12
  • H-fluid as an alternative to HFC-134a?

    The new European Directive 2006/40 on emissions from air-conditioning systems in motor vehicles - which bans F-gases with a GWP higher than 150 (such as HFC-134a) as of 2011 for new models of cars - and Californian legislation which is putting...

    • Publication date : 2006/11/15
  • Chillers: efficiency takes off

    Chillers are key refrigerating systems since, according to the Department of Energy, in the US, they account for about 13% of the power consumed by the nation's buildings and 9% of the overall demand for electric power. Examples below illustrate...

    • Publication date : 2008/10/25
  • Innovative system to cool spacecraft on long missions

    An innovative cooling system developed by a team of mechanical engineers has proven successful in testing aboard the International Space Station.

    • Publication date : 2018/05/17
  • DuPont’s new HFO 1336mzz could replace R123

    DuPont has announced it is to start small scale production of a new low GWP HFO which could replace R123.

    • Publication date : 2014/05/22
    • Subjects: HFCs alternatives
  • A promising future for nanorefrigerants

    A review article published in the IJR highlights the remarkable heat transfer properties of nanorefrigerants, which are leading to significant improvements in the performance of refrigeration systems.

    • Publication date : 2018/05/17
  • IIR Rankine Conference 2020: Which alternative working fluids for ORC systems?

    HFOs (hydrofluoroolefins), HCFOs (hydrochlorofluoroolefins) and hydrocarbons were the main alternatives to HFC245fa presented during the IIR Rankine Conference 2020.

    • Publication date : 2020/09/04
    • Subjects: HFCs alternatives
  • DuPont develops a new foam expansion agent

    FEA-1100, DuPont’s latest foam expansion agent, has an excellent environmental profile. It is characterized by zero ozone depletion potential and low global warming potential (9.4). DuPont indicates that FEA-1100 has a short atmospheric lifetime:...

    • Publication date : 2011/06/08
  • Reducing the environmental impact of ultra-low temperature refrigeration systems

    Ultra-low temperature (ULT) refrigeration systems often use very high-GWP HFCs. Yet, ULT systems are excluded from the scope of the regulations aimed at phasing-down HFCs. An IJR paper reviews the most promising...

    • Publication date : 2020/04/05
    • Subjects: Environment, HFCs alternatives
  • New NIST screening method for refrigerants

    Researchers from the US National Institute of Standards and Technology (NIST) developed a computational method to identify candidate low-GWP refrigerant fluids. The method identified 1234 promising low-GWP chemicals among 56 203 considered.

    • Publication date : 2012/11/20
  • Data centers: immersion cooling project

    The world’s most powerful two-phase immersion cooling (2PIC) project, which will be deployed in a 40+ MW data center being constructed by BitFury Group, is currently underway in the Republic of Georgia.

    • Publication date : 2016/05/12
  • New HFO/CO2 blends in the pipeline

    The refrigeration and air-conditioning sector has long been divided into two distinct camps, that promoting natural refrigerants and that developing low-GWP fluorocarbons. But could this be about to change?

    • Publication date : 2013/03/04
  • 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 : English, French
    • 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 : 2023/06/23
    • Langues : English, French
    • Themes : LNG and LPG