Résultats de recherche

  • Les systèmes d'éclairage pour les entrepôts frigorifiques

    Présentation des différents systèmes d'éclairage pour des entrepôts frigorifiques à température négative. (en anglais)

    • Date de publication : 28/03/2014
  • Better air in planes - at last!

    A series of technical changes is making it possible to improve the quality of cabin air in airplanes which until now has been invariably dry and poor in oxygen. The reason: the air was derived from the jet engines. This so-called "bleed air" is...

    • Date de publication : 12/02/2007
  • Refrigerated delivery vehicles: device facilitates door closing

    In order to avoid unwanted temperature rises due to awkward door closing, an EPDM valve has been designed by the German company Maagtechnic.

    • Date de publication : 03/10/2011
  • Solar cooling: Plans for air-conditioned stadiums in Qatar

    When Qatar won the bid to host the 2022 football World Cup in December 2010, it came as a surprise. One of the major causes of scepticism was the average summer temperatures of over 40°C with recent peaks at 50°C. But central to Qatar's bid was a...

    • Date de publication : 11/02/2011
  • CO2 Supermarkets

    The journal Die Kälte und Klimatechnik has just produced an article on the opening of a supermarket using refrigeration installations for the first time running on direct expansion CO2 with both medium and low temperatures in Wettingen,...

    • Date de publication : 26/10/2005
  • 2005 AHR Expo Innovation award winners

    The winners of the third annual AHR (Air Conditioning, Heating and Refrigeration) Expo Innovation awards will be honoured during a ceremony during the 2005 AHR Expo in Orlando, Florida, on February 8, 2005. The product entries were judged for...

    • Date de publication : 22/12/2004
  • Briefs: Thermoacoustics for air conditioning

    The Palo Alto Research Center (PARC), is developing a new form of refrigeration for cooling at room temperature, based on thermoacoustics, which was previously used only for cryogenic temperatures. The technology PARC developed is claimed to...

    • Date de publication : 27/05/2010
  • Eight ways to save energy in cold stores

    Researchers from Enviros Consulting analysed cold storage at 13 frozen food manufacturers and cold store operators in UK for the report "Improving the energy efficiency of the cold chain" released by the British Frozen Food Federation (BFFF)....

    • Date de publication : 13/08/2009
  • 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...

    • Date de publication : 14/09/2004
  • 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...

    • Date de publication : 20/11/2007
  • 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...

    • Date de publication : 24/11/2004
  • 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...

    • Date de publication : 11/02/2005
  • Briefs: First MAC system using an ejector

    Denso Corporation has developed the world's first passenger mobile air-conditioning system that uses ejector technology. The ejector, which is a small refrigerant injector, was installed on the new Prius introduced by Toyota in May 2009. According...

    • Date de publication : 13/08/2009
  • Briefs: CO2 heat pumps in a retirement home

    Villa Laura, a retirement home near Florence, Italy, is equipped with 4 water/water ground-water heat pumps operating with a transcritical CO2 cycle providing heating, air conditioning and hot water. This technology is already used to produce hot...

    • Date de publication : 20/11/2007
  • 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...

    • Date de publication : 10/11/2004