Search results

See all results in the Fridoc database

  • Briefs: Japan: refrigerant leakage larger than expected

    According to a survey conducted by the Ministry of Economy, Trade and Industry (METI) of Japan, leakage of fluorinated refrigerants used in air-conditioning equipment in the country is on the average 10 times greater than estimated. METI collected...

    • Publication date : 2009/08/13
    Read more

  • CHEs in heat pumps

    In its Annex 33, "Compact Heat Exchangers in Heat Pumping Equipment" issued in September 2010, the Heat Pump Programme details the benefits of using compact heat exchangers (CHEs): . Improved heat exchanger thermal effectiveness: thermal...

    • Publication date : 2011/02/07
    Read more

  • 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
    Read more

  • Reducing the economic costs of a direct-use geothermal heating system

    Italian researchers have modelled a polymer heat exchanger to reduce the cost of a direct-use geothermal heating system for a single building in the active volcano district of the...

    • Publication date : 2022/02/21
    • Subjects: Technology
    Read more

  • Alternatives to replace R404A for refrigerated transport

    With about 5 million refrigerated vehicles operating worldwide, there is active research and development focusing on identifying alternatives to R404A, which is traditionally used in truck and trailer...

    • Publication date : 2020/09/04
    • Subjects: HFCs alternatives
    Read more

  • ICR 2019: an overview of current refrigeration research (part I)

    Presentation of the main scientific and technical topics covered in the papers of the 25th IIR International Congress of Refrigeration and summary of some of the 14 keynotes.

    • Publication date : 2019/09/30
    • Subjects: HFCs alternatives
    Read more

  • Oil-free chillers

    At the beginning of 2005, Climavenata will launch its new range of liquid chillers: the "Turbo Efficiency Climaveneta System" (Tecs), which is an oil-free chiller. The range is fitted with Danfoss-Turbocor R-134a centrifugal compressors :...

    • Publication date : 2005/02/10
    Read more

  • The French air-conditioning market is growing significantly

    According to Clim'info, in France, sales of individual air conditioners (with capacities below 17.5 kW) have undergone a very strong progression - about 40% - in 2003 compared with 2002. Sales of small mobile units, in particular, have benefited...

    • Publication date : 2004/07/15
    Read more

  • Magnetic cooling takes off

    - The principle of magnetic cooling is based on the magnetocaloric effect, which was discovered in 1881 by Warburg. Magnetocaloric materials heat up when they are positioned in a magnetic field and cool down to a lower temperature than their...

    • Publication date : 2005/02/11
    Read more

  • Energy efficiency comparison of air-conditioning systems in electric vehicles

    A study compares the energy efficiency of conventional refrigeration systems with that of heat pumps in mobile air conditioning. R744, R134a and R1234yf are considered. Reversible heat pumps are found the most energy-efficient systems.

    • Publication date : 2019/02/28
    Read more

  • China: new CO2 heat pump standard

    Standard GB/T26181-2010 is for hermetic motor-compressors for household and similar-use heat pump water heaters using CO2 refrigerant, and is expected to accelerate the introduction of new products on the Chinese market.

    • Publication date : 2011/12/22
    Read more

  • Record: heat pump less than 10 g of propane per kW

    German researchers have developed a refrigeration circuit integrating a propane heat pump that achieves a heating power of 12.8 kW with only 124 g of refrigerant. 

    • Publication date : 2022/10/27
    Read more

  • 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: Developing country, HFCs alternatives
    Read more

  • IJR highlights: review of low-GWP alternative refrigerants

    In a recent review article based on over 60 published studies and published in the International Journal of Refrigeration, Chinese researchers have compared nearly 40 alternative low-GWP refrigerants in terms of...

    • Publication date : 2021/06/28
    • Subjects: HFCs alternatives
    Read more

  • A novel method for frost detection

    Frost growth on the evaporator coils of a refrigeration plant can dramatically reduce its efficiency. A novel indirect detection method that would avoid frost built-up has been developed.

    • Publication date : 2020/02/06
    Read more
See all results in the refrigeration sector news items

  • New publications

    The IIR has issued 3 new publications: - the 20th Informatory Note on Refrigerating Technologies Magnetic Refrigeration at Room Temperature, written by P. Egolf - Chairman of the IIR working party dedicated to this technology - and Ronald...

    • Publication date : 2007/11/20
    Read more

  • Briefs: CERTE Sub-Commission meeting

    The annual meeting of Sub-Commission (SC) D2 on Refrigerated Transport (CERTE), which took place in Prague, Czech Republic, was the occasion to discuss numerous technical questions on tests. It was decided to enlarge the scope of the SC and...

    • Publication date : 2008/08/12
    Read more

  • Heat pumps, the central theme of the recent IIR Congress

    An overview of the research carried out in the field of heat pumps, with the aim of achieving greater flexibility and increased energy efficiency, in particular through to the use of thermal energy...

    • Publication date : 2023/10/24
    Read more
    Heat pumps _ outside unit

  • Technical visit to the Tokyo fish market (in French)

    During the ICCC conference last June, participants were offered technical visits, including a tour of the Tokyo Fish Market. Alain Le Bail, President of the IIR Commission C2, chose to visit it. Discover his...

    • Publication date : 2024/11/15
    Read more
    Alain Le Bail

  • Cryogenic nitrogen in the food and beverage industry

    The adoption of cryogenic processes in the food and beverage industry is predominantly driven by liquid nitrogen (LIN), and it is the preferred candidate for food chilling and...

    • Last update : 2023/11/07
    • Langues : French, English
    • Themes : Freezing of foodstuffs
    Read more

  • 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
    Read more

  • 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
    Read more

  • Nanorefrigerants

    Nanorefrigerants are created by adding nanoparticles in suspension to a base refrigerant. They have a thermal conductivity that is 15% to 104% higher than that of the corresponding...

    • Last update : 2022/06/17
    • Langues : English, French
    • Themes : Nanofluids
    Read more