Search results

  • Use of all-aluminum coils increasing

    All-aluminum heat exchanger coils called microchannel coils have been used in the automotive industry for over 20 years, but the technology – which uses an all-aluminium brazed fin construction – has been applied to the HVAC&R industry only...

    • Publication date : 2014/10/08
  • The heart inspires a new cooling system

    In August 2004, at the Micro Nano Breakthrough Conference in Portland, engineers from Oregon State University in the US, presented a new successful desorption system using branching microchannels. The system was inspired by the human blood pumping...

    • Publication date : 2004/09/14
  • Charge minimization in hydrocarbon systems

    This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). It presents the results of the project to minimize charge in a R290 system that has 1-1.5 kW refrigeration capacity. Currently, there are many guidelines...

    • Publication date : 2004/11/24
  • Trends and Figures: Chiller market grows and diversifies

    According to reports published during the 2008 AHR Expo held on January 22-24, 2008 in New York, the chiller market in 2006 was USD 2 billion in Asia-Pacific, USD 1.5 billion in Europe and USD 1 billion in the US. The growth (as compared to 2005)...

    • Publication date : 2008/05/13
  • Air paths inside fruit

    Microscopically small structures inside pears and apples allow them to "breathe". Researchers at the Catholic University of Leuven and the European Synchrotron Radiation Facility (ESRF) have visualized these pathways for the first time, therefore...

    • Publication date : 2008/10/25
  • 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
  • The benefits of 3D printing in refrigeration and air conditioning

    The various applications of 3D printing in the field of refrigeration and air conditioning highlight possible tremendous advantages in terms of energy efficiency and cost minimisation.

    • Publication date : 2020/05/27
    • Subjects: Technology
  • Heat exhangers: what's new?

    Nanotechnology: the future of heat exchangers? The US Department of Energy has awarded contracts to improve energy efficiency. One such contract, awarded to TIAX, a technology development company, through the Small Business Innovation...

    • Publication date : 2006/05/05
  • Neutrons provide first images of refrigerant flow

    Researchers at DOE’s Oak Ridge National Laboratory have captured undistorted snapshots of refrigerants flowing through small heat exchangers, helping to further elucidate characteristics of heat transfer.

    • Publication date : 2015/05/28
  • Converting waste heat into cooling

    A prototype that has succeeded in converting waste heat into cooling capacity could lead to new solutions to harness excess energy produced by systems.

    • Publication date : 2012/03/23
  • New advance in cryopreservation could make blood preservation more practical

    It’s already possible to cryopreserve human red blood cells in the presence of 40 percent glycerol, but is rarely done because of the time-consuming process to thaw and remove the glycerol from the blood.

    • Publication date : 2015/05/12
  • Photovoltaic thermal system combined with adsorption cooling achieves 75% efficiency

    Researchers from IBM Zurich research laboratory combined photovoltaic (PV) and solar thermal techniques in a high-concentration PV thermal (HCPVT) system to achieve efficient electrical cooling output without the need for extra cells.

    • Publication date : 2013/10/25
  • GL2012 highlights: technologies needed in order to raise uptake of natural refrigerants

    Prof. Pega Hrnjak presented technologies that could advance the position of major natural refrigerants at the 2012 Gustav Lorentzen Conference on Natural Refrigerants. He claims that hydrocarbons, ammonia and CO2 could become strong contenders for...

    • Publication date : 2012/12/21
  • Overview of data center cooling technologies

    The very huge growth in Internet traffic requires the continued development of new energy-efficient data center cooling technologies, based primarily on liquid...

    • Publication date : 2022/12/15
    • Subjects: Technology
  • For IIR members only

    Data centres: the challenges of energy-efficient chip cooling

    Innovative liquid cooling solutions are under development to further reduce energy consumption in the ever-growing number of data centres. 

    • Publication date : 2024/01/26
    • Subjects: Technology
  • 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