QD1EC146 EC Single inlet Centrifugal Ventilation air cooler blower

QD1EC146 EC single inlet Centrifugal fan

Dimension Detail

How does this affect energy efficiency? 
Doubling the speed of a motor increases its power input by a factor of 8 so it’s very wasteful to run a fan faster than is required. If you can tailor the fan speed to match the demand, the potential for energy saving is huge. Even when compared to on/off operation, EC speed modulation is much more efficient.

EC fans can also contribute to increasing the overall efficiency of an application. In a cooling system for example, keeping the refrigerant pressure constant rather than having it rise and fall as fans switch on and off has been found to reduce the load on the compressor resulting in even greater energy saving.

If two motors are producing the same output but one has a greater power input then you can be sure that the surplus energy is being dissipated as heat. If an application is designed to remove heat then it will have to do extra work just to remove the heat produced by the fan motor itself, so EC fans will improve the efficiency of the whole system.

AC vs. EC
AC motors are designed to operate at a certain point on their performance curve which coincides with their peak efficiency. Either side of this operating point, the efficiency can drop off considerably. EC motors on the other hand have an almost flat efficiency curve which varies relatively little across the speed range, a range which is not limited by synchronous speeds or as susceptible to voltage fluctuations as an AC motor. This makes the EC fan much more flexible in terms of being able to use the same product to match the performance requirements of different applications while still benefitting from increased efficiency.

The available range of AC input EC fans is expanding all of the time. There are axial and centrifugal fans, forward curved and backward curved, single inlet and double inlet, single phase and three phase and they are often directly interchangeable with their AC equivalents. EC offers the OEM more than just energy-efficiency. It is an opportunity to bring new technology and functionality to their products. With ever-increasing demand for energy efficient systems, when it comes to fan based products, there’s no reason for manufacturers not to have any in their portfolio.

 Our factory

WENLING DAYANG ELECTRIC APPLIANCE FACTORY was established in 1998 with area of more than  10000 square meters. Another producing company Taizhou Boyang    Mechanical&Electronic Co.,Ltd, has  already put on production as well.

Our products mainly include the external rotor axial fan,centrifugal fan and the shaded-pole motor. The products are extensively applied to all kinds of refrigeration, ventilation, air conditioner, medical and other equipments.

Our factory has got ISO9001:2000 quality certificate system. The three main kinds of product have got the Europe  CE certificate and China CCC certificate, axial fan and centrifugal fan have already obtained the State Administration of quality supervision and Quarantine issued fan motor produce license.

Our factory has access the Detailed Management Model Enterprise, the Enterprise Technology Center, the taxpayer and the honorary title such as Famous Trademark.

On marketing pioneer, our products sold to more than 30provinces and cities in China and more than 20 countries abroad.