Search results

  • Impact of indoor heat on mortality in the elderly

    A team of researchers has developed a model to assess the impact of indoor heat on the health status of populations, and more specifically on the mortality of people over 65 years of age. 

    • Publication date : 2021/06/28
  • Cool like a butterfly wing

    New study demonstrates that butterfly wings contain a network of living cells with specific thermodynamic and thermoregulatory properties. Butterfly wings cool down as a result of low solar absorption combined with efficient radiative heat...

    • Publication date : 2020/02/28
  • 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
  • Earth-to-air heat exchanger for air conditioning in a Colombian tropical weather

    In a recent theoretical study, a passive cooling system using an earth-to-air heat exchanger (EAHE) was modelled for the Colombian tropical weather.

    • Publication date : 2021/08/02
    • Subjects: Developing country, Technology
  • Sorption chillers

    Sorption chiller technology is rapidly developing, especially that using solar energy. - As highlighted by Jacob and Kohlenbach* during the latest IIR Gustav Lorentzen Conference on Natural Working Fluids in Sydney, in Europe, numerous new...

    • Publication date : 2011/02/07
  • Canadian government

    The Canadian government recently proposed a set of Minimum Energy Performance Standards (MEPS) for homes and industrial products including large air-conditioning systems, commercial air-conditioning systems, room air conditioners, portable air...

    • Publication date : 2011/02/11
  • Out of ordinary: Cool Olympics

    During the Beijing Olympic Games held in Beijing in August 2008, a number of athletes benefited from cooling technology. Concerned about the high temperatures usually encountered in Beijing in summer, several teams turned to cooling technology....

    • Publication date : 2008/10/25
  • AC Market in Europe

    According to Daikin Industries Ltd., the European air-conditioning (AC) market has features that could appear as commercial obstacles, including relatively mild climate, even in Mediterranean areas. Concern for cityscape issues leads to resistance...

    • Publication date : 2006/07/26
  • 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: AC on board ships

    Oasis of the Seas, the world¡¯s largest cruise liner, recently left Florida on its first public voyage. It can carry over 6000 passengers and 2300 staff. The Oasis of the Seas was built in Finland at a cost of GBP 800 million, making it the most...

    • Publication date : 2010/03/07
  • US HVACR sector news

    - According to the US Department of Labor (DOL), Bureau of Labor Statistics, heating, air-conditioning and refrigeration mechanics and installers held about 249 000 jobs in 2002 in the US. This sector has the fastest expected growth rate in the...

    • Publication date : 2004/11/10
  • Energy savings in display cabinets

    Several new developments make it possible to save energy in display cabinets. - Optimizing air curtain velocity A team at the Air Curtain Research Laboratory at Kettering University in Michigan, US, has modellized the air flow in air curtains and...

    • Publication date : 2009/12/09
  • Performance test results of alternative low-GWP refrigerants to R410A

    Emerson Climate Technologies has published the results of drop-in tests of new low GWP refrigerants, L41b and DR5, in a R410A scroll compressor.

    • Publication date : 2014/06/18
  • A technical day to present the evolutions of the Certicold Pharma label

    On March 22, 2017, the CEMAFROID group gathered health stakeholders for a technical day dedicated to the Certicold Pharma label.

    • Publication date : 2017/04/10
    • Subjects: Regulation
  • For IIR members only

    Current status and future trends of natural refrigerants in North and South America

    Two papers presented at the IIR Gustav Lorentzen Conference perfectly illustrate the interest in natural refrigerants and the obstacles they face in the Americas. 

    • Publication date : 2022/09/28
    • Subjects: Technology
  • 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
  • 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
  • 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)
  • Thermophysical properties of HFC refrigerants

    Thermophysical properties of over 100 HFC refrigerants, including single-component and blends.

    • Last update : 2022/06/17
    • Langues : English
    • Themes : HFCs, Blends, HFO et HCFO
  • Thermophysical properties of HFO refrigerants

    Thermophysical properties of over 50 HFO refrigerants, including single-component and blends.

    • Last update : 2022/06/17
    • Langues : English
    • Themes : Blends, HFO et HCFO
  • Thermophysical properties of hydrocarbon refrigerants

    Thermophysical properties of over 20 hydrocarbon refrigerants, including single-component and blends.

    • Last update : 2022/06/17
    • Langues : English
    • Themes : Hydrocarbons, Blends
  • 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
  • For IIR members only

    Heat pump stock in Europe

    This table presents the stock of installed heat pumps, the CO2 emissions avoided and the number of jobs in the heat pump sector in Europe.

    • Last update : 2021/12/14
    • Langues : English
    • Themes : Heat pumps, energy recovery: economics and statistics