European standard Euroven approval VS Chinese standard demand In the early 90s, the European and American air conditioner companies were establ ished plant gradually in China and then brought technology of air purification into China. Air conditioner professionals are getting more and more familiar with European En1886 standards. In recent years, with the improvement of the air conditioner energy saving and environmental requirements, more and more owners and designing institute tends to inspect air handling units withEuropean EN1886 standard. As industry and cleaning project, some performance of the units should follow the standard ’s specific grades. it would been asked for performance of box reaching this standard ’s level more definite. Where is the specialty of the European EN1886 standard? What’s the difference between European EN1886 standard and national standard GB14294?The following comparison will make you understand the European EN1886 standard. EN1886-2007 GB 14294-2008 Unit degree of mechanical 1.Relative deformation=max(××’’/PQ, ×’×’’/RS) 2.Intensity scale: be divided into three grades like D1、D2 and D3 according to the relative deformation, and the permanent deformation is less than 2mm/m after the pressure is relieved ; 3.Testing pressure ：Modular machine±1000Pa, to test deformation, ±2500Pa, to test the permanent deformation. Real machine 1.Relative deformation= maximum deformation/ longest edge; 2.Deformation less than 4 mm/m, or disqualification; 3.Testing pressure: 4.Machine ’s air volume more than 30000m3/h, tested by using ±1000Pa, no requirement of permanent deformation volume. 5.Same treatment to positive pressure and negative pressure Unit degree of mechanicalcan test deformation an...
