According to the research conducted by the group, in high-rise buildings, the higher the floor, the less power the range hood requires, while the lower the floor, the more power is needed. However, it should not exceed 50 to 1500 cubic meters per minute. If the range hood has more power than necessary, it's essentially wasting energy. It is reported that another key scientific research project under the Ministry of Construction has led to the development of the LQ-type range hood. This model is designed to achieve a low motor power of only 90W while still meeting the required exhaust volume specified in the "House Design Code." Lin Runquan explained to reporters that some range hoods work well on the 30th floor but may not perform as effectively in lower-floor homes, which highlights the importance of matching the hood’s characteristics to the specific needs of the space.
The right combination of a residential kitchen and bathroom ventilation system depends heavily on the performance curve of the range hood. In Japan, all range hood products come with characteristic curves. However, in China, no company has officially published such data for their products. A chief technical officer from a Chinese range hood manufacturer noted that these curves are considered proprietary information and a trade secret. In Japan, intellectual property is better protected, so companies can safely share their data without fear of losing business. In contrast, Chinese companies still lack this level of protection. During an appraisal meeting, two "Dalong" range hoods were displayed. According to the staff, these models have already been installed in a community in Beijing. Their standout feature is that they use very little power but provide strong suction. For example, a range hood with just tens of watts can easily suck up a plastic basin filled halfway with water placed on top of the unit.
Currently, the Dalong range hoods are not available for general sale; they are only used in real estate projects as part of supporting systems. This approach reflects a strategic focus on integration rather than mass retail, aiming to ensure optimal performance in specific environments.
Curtain Rod Iron Finial,Iron Finial Curtain Rod,Iron Curtain Rod,Wrought Iron Curtain Rods
HANGZHOU AG MACHINERY CO.,LTD , https://www.famourdecor.com