With the COVID-19 pandemic, countless deaths and infection reports around the globe are emerging endlessly. The disease outbreak has caused considerable disquiets in lots of countries in the world, and people are treating the COVID-19 as the “Modern Black Death”. However, the pandemic has also drawn the international attention related to the public health. Moreover, the indoor ventilation issue has also been addressed. According to the research conducted by the WHO, an appropriate ventilation design can protect the human health and control the infection risk effectively. The longer we stay in a confined space, the more carbon dioxide we will exhale than the oxygen we inhale. A well-ventilated environment not only allows the fresh air to circulate through the entire room at all times, the fresh air can also strengthen the immune system and reduce the viral infection risk. Therefore, how to improve the ventilation and air circulation of the closed indoor environment should be reviewed and examined carefully.

Figure 1：Natural ventilation for infection control in health-care settings

For those who are required to undergo household isolation or patients that are required to stay in the hospital, the most important point is to maintain the excellent ventilation and perfect indoor air quality. The research conducted by the WHO showed that installing multiple ceiling fans in the ward is conducive to the ventilation, and excellent ventilation is the key to reduce the disease infection risk. The following table demonstrated the comparison between the three common places, together with the advantage/disadvantage analysis. The table indicated that the best and most stable ventilation effect can be achieved when an open environment is equipped with adequate ventilation products.

If the space is allowable, installing the ceiling fan is the optimal choice for maintaining the excellent ventilation and air quality. Not only can the ceiling fan save 50% of the electricity compared to the conventional air conditioning system, it can also effectively lower the overall temperature when the room temperature is less than 30 degrees. With the ceiling fan installed within the space, according to many designers’ and architects experience, the airflow of the ceiling fan can also produce the temperature equalization effect in the air-conditioned room and enhance the overall performance aside from reducing the heat. Targeting at the factory without the air conditioning system, the baking-hot environment will distract the worker and reduce the work efficiency. The airstream generated by the ceiling fan will enable the overall space to achieve the temperature equalization effect and cooling in addition to lowering the temperature. A cozier environment will certainly make people feel more comfortable and thus improve both concentration and work efficiency. Furthermore, through the fast and diffusive spatial convection, the sultry and humid room environment can be effectively suppressed, which not only avoids the risk of indoor circulating infections but also effectively prevents the bacteria and virus from growing.

Since 2015, SUNON has been dedicating itself to developing the energy-saving ventilation products. Through the rich experience accumulated in nearly 40 years in the fan motor technology industry, SUNON is able to not only provide the energy-saving ventilation products with best quality but also perform rigorous on-site inspections. It takes the position and the wind direction of the location into account before installation. The precise and comprehensive ventilation planning targeting at the different airflow conditions of the site and space will also be conducted through the flow field visualization simulation system. Although SUNON encounters various harsh installation environments such as high-ceiling space, it is still capable of providing the optimal flow field suggestions and simulation analysis scenarios to meet the client requirements.

From the installation of Morden ceiling fan series in households and commercial spaces to the Powerful HVLS Fan large-sized ceiling fans in hotels, farms, animal agriculture, automated manufacturing factories and large warehouses, SUNON provides the specialized site planning service and customizes the most impressive ventilation experience for the client based on 100% independent R&D, design and manufacturing, involving the strict quality verification system and production inspection.