We can find that many buildings have large open spaces with high ceilings, such as sports stadiums. Heating the gymnasium to provide a comfortable temperature to people usually consumes a lot of energy and produces excessive emissions. With the increasingly stringent energy-saving and emission-reduction laws and regulations, sports stadiums, like in many other industrial fields, must now consider providing thermal comfort for everyone on the one hand and reducing operating costs and carbon footprint on the other. Due to the low density of hot air relative to ambient air, when the hot air rises, it will cause the hot air to stratify. Coupled with the lack of air circulation, the heated air usually stays on the ceiling of large facilities. If the problem of air stratification can be reduced, the heating cost of the stadium can be reduced.
High-Volume, low-speed (HVLS) ceiling fans are an important and practical way to reduce the air stratification from floor to ceiling in ample space. The large HVLS ceiling fan with a 7.3m diameter runs at a low speed in winter and mixes the warm air on the roof with the cold air on the floor without creating an unnecessary cooling sensation on everyone's skin. The large HVLS ceiling fan pushes the hot air along with the ceiling and makes the hot air downward. Large HVLS ceiling fans increase the ambient temperature by maximizing excess heat on the roof, thereby reducing the use of HVAC systems.
Suppose we tend to observe the massive area, like a sports stadium, before and when the large HVLS ceiling fan is employed. In that case, it's not tough to seek out that the close temperature detected at entirely different heights is inconsistent. The temperature distinction between the ceiling and the ground will reach 5-10°C. When the large HVLS ceiling fan is turned on, it only takes 10 minutes to search out that the low-altitude ambient temperature starts to rise and, bit by bit, mix the entire ample space. However, when the large HVLS ceiling fan is turned off, we can conjointly clearly realize that the low-altitude ambient temperature begins to drop, and the cold air and the upper layer of hot air are layered once more. Therefore, the rapid return of stratified air indicates that the fan needs to continuously run the large HVLS ceiling fan during the cold weather season. The use of air conditioners or other heating equipment makes this phenomenon even more apparent. The large HVLS ceiling fan makes the indoor air temperature uniform. It quickly mixes the upper layer of hot air with the lower layer of cold air, making the heating equipment only have to be compelled to reach the set temperature in a shorter time, thereby stopping operation. In addition, using a large HVLS ceiling fan slows down the rate of ambient temperature drop, and therefore the time for the heating device to restart is prolonged. The use of large HVLS ceiling fans and heating equipment greatly helps customers save costs and scale back carbon emissions. At the same time, due to the warm indoor environment, more and more people would like to exercise in this gym if your competitor is unwilling to turn on the air conditioner or is restricted from operating because of excessive carbon emissions.
Large HVLS ceiling fans can minimize air stratification from floor to ceiling and significantly save winter heating costs. When the large HVLS ceiling fan is not used, there is a temperature gradient from floor to top. When the large HVLS ceiling fan is used next, the temperature difference between the floor and the ceiling decreases bit by bit. Large HVLS ceiling fans mix the stratified air despite the giant stadium to produce more uniform temperature conditions. The large HVLS ceiling fan reduces stratification and reaches a near-uniform temperature condition within 10 minutes of operation. Once the large HVLS ceiling fan is turned off, air stratification begins to reappear in just 15 minutes, which indicates that continuous or almost continuous operation of the fan may be required to minimize heat loss through the enclosure. Large HVLS ceiling fans have also reduced the use of standardized gas by 29%, significantly reducing heating costs in winter. The use of large HVLS ceiling fans in sports stadiums is an energy-saving way to create a more uniform thermal environment because of the low power requirements of the fans and the potential to save utilities during cold weather seasons.
To sum up, the main benefits we could gain from installing HVLS ceiling fans in large and tall spaces is that HVLS ceiling fans could help save energy, save electricity, save producing cost, and increase passenger flow, improve work efficiency, increase profit. All of these could support an ample space to maximize benefits.
Source: Gaxiaofan Press Department
Publication Date: 1/4/2022
