Chauffage connaissances

Sep. 17, 2008 – The European Parliaments Industry Committee backed EU legislation that targets extensive deployment of renewable technologies, including all types of heat pumps. New rules could also promote, or oblige, the use of renewable technologies in new and existing buildings. The European Parliaments Committee on Industry, Research and Energy (ITRE) voted on 11 [...]

Sep. 22, 2008 – California has proposed an extensive set of leak detection, repair, reporting, and retrofitting rules for large air conditioning and refrigeration systems using high global warming F-gases. Facilities using the natural refrigerant CO2 would not be affected by the regulation presented to the public this week. The draft regulation, discussed in three [...]

Dec. 05, 2007 – Development of air conditioning products to address environmental and air pollution concerns is now an imperative for the industry. Heat exchangers, which are widely used in room air conditioners, packaged air conditioners, heat pump water heaters and other applications, are one of the most important components and affect the performance, reliability [...]

Oct. 26, 2007 – Technische Universität Darmstadt is the overall winner of the 2007 Solar Decathlon. This competition challenges 20 college teams from around the world in 10 contests to design, build and operate the most livable, energy-efficient, completely solar-powered house. Solar Decathlon houses must power all the home energy needs of a typical household [...]

Nov. 20, 2007 – The renovation of ASHRAE headquarters is expected to be completed in June 2008 at an estimated cost of $5.4 million. Once completed, the renovated building in Atlanta will feature two separate HVAC systems as part of its role as living lab. Level one of the building will be equipped with air-cooled [...]

Dec. 03, 2007 – The overall effi ciency of a heat pump system is highly dependent on the performance of the compressor. Compressors in heat pumps not only encounter a wider range of operating conditions than in traditional air conditioners, but also have two to three times longer run times per year than compressors for [...]

May. 16, 2007 – The conclusion from the latest Intergovernmental Panel on Climate Change (IPCC) report issued on 4 May is that technologies are available at a low cost to significantly reduce greenhouse gases. More specifically, the report, based on a study by more than 2,000 scientists, demands the use of al

Jun. 27, 2007 – Based on the coabsorbent cycles, recently introduced by the author, a particular new technology can be developed for extremely efficient and feasible heat pumping applications. The paper presents model results of residential and district ammonia/water heating applications for coabsorbent hybrid and absorption heat pumps, supplied by different winter and summer heating [...]

Jun. 27, 2007 – Conventional thermally powered water heaters are 80 to 95% efficient. The new thermally powered heat pump (TPHP) reported herein is over 140% efficient. In addition, the cold end of this TPHP produces useful chilling. The amount of energy-free chilling is equal to the amount of heat pumping. The combination of the [...]