Beijing air purifier of the blower factory wholesale price, manufacturer exhaust fan ..

Edit: Standard Electrical Co., Ltd. Shenzhen wind turbine experts more price and specifications, please visit our Ali official website: http: //fbemf2014.1688.com/ Beijing air purifier of the blower factory wholesale price, the fan manufacturer rankings preferred fan brand, what are you waiting for? Fan industry energy efficient centrifugal fan base model series developed its third meeting held in Shenyang in September 2011 from 15 to 17. Attended the meeting in addition to the work involved in the project developed 15 prototype units, also invited the leaders of the Association of wind technology development work of the Commission 14 member units attended the meeting. The meeting will begin by the Xi'an Jiaotong University Institute of fluid machinery Qin Guoliang, Wang Li, Zhu Changyun three teachers introduced a new series of centrifugal fan design combined with the overall progress, prototyping, the prototype testing laboratory reports. Beijing air purifier of the blower factory wholesale price, fan manufacturers ranking brand of choice for fans, what you hesitate? According to the project plan calls for 20 series models should be manufacturing 40 prototype, so far produced a total of 34 units, 17 units were tested. From manufacturing quality situation, some companies better product manufacturing quality, but some companies manufacturing quality could be improved, most companies did not provide a rotor balancing report and commissioning report, not with the coupling of individual enterprises, to fans installation and performance testing for the inconvenience. From the performance of the test results: 1, the new series of fan flow, pressure can basically meet the design requirements, approximately half of the series model to achieve the desired efficiency indicators; 2, total pressure test values ??were significantly lower than the number of revolutions better than the high specific speed value; 3, in the test series fan model increases efficiency ratio increases the rotational speed of the fan model; 4, in the case of low specific speed coefficient with pressure close to the design value than the variation of the number of revolutions higher than speed fan total pressure some deviation of individual model, which is the cause of abnormal pressure variation coefficient; 5, with little difference in low specific speed than the speed of pressure variation coefficient duct plenum experiments and experiments, parameters coverage considerably, With the increase of speed, hairdryer experimental results more gentle curve, the coverage is greater Yes. Beijing air purifier of the blower factory wholesale price, fan manufacturers ranking brand of choice for fans, what you hesitate?