Guide to HVLS Fans Philippines
Perhaps most people very rarely take interest in fans. It is hard to blame. After all, as long as we have one to blow our hair in our faces, everything is well, right? How about if I tell you that you are wrong? What would you do if I tell you that you have the choice to pick a better cooling fan, in terms of coverage, energy and cost efficiency?
If you think this topic is boring, then you are wrong again.
Until now, most people still thinks that high-speed fans are useful to improve air quality and environmental control in larger areas. Although this is in a way true, still there are several problems with these types of fans such as their air speeds provide minimal if no additional cooling at all; operation costs are expensive; and there is this undeniable disruptive air movement as well as unnecessary noises.
Ceiling fans are considered as one of the most effective types of fans. It is because they are effective in air circulation, creating a draft throughout the room. Also, when used with air conditioning, ceiling fans allow users to raise thermostat settings of about 4° Fahrenheit, and without compromising comfort.
Studies by mechanical efficiency experts reveal that a type of ceiling fan, which is called High-Volume Low-Speed fan or HVLS fan, is the most energy-efficient air circulating fan available. Moreover, when used as a stand-alone cooling system, HVLS fans are able to provide a cooling effect equal to a reduction in the temperature of up to 8° Fahrenheit within the fan’s coverage area of up to 20,000 sq. ft. per 2 horsepower 24-foot fan.
The company also defined the HVLS fan as a type of mechanical fan used in personal, commercial and industrial settings. HVLS fans, in general, are big ceiling fans, Although, some HVLS fans come as pole-mounted fans.
But, compared to residential ceiling fans that are typically 36- to 52-inches in diameter, HVLS fans come in large diameters that start at 8-feet and go up to 24-feet. HVLS fans also move very slowly unlike standard fans which operate at high speed. With such large diameters, HVLS fans can move large amounts of air at low rotational speed– hence came to the name “high volume, low speed.”
As HVLS Fans are recommended to be used at homes, these types of fans are commonly used, and indeed should be highly needed in industries.
Almost all industries need industrial fans to ensure proper ventilation in order to secure their products’ integrity while also securing the health of their employees and target customers. Industrial fans provide numerous benefits and are useful in various applications.
Chemical, medical, automotive, agricultural, food processing, medicinal, mining and construction industries are only some of the industries that can highly utilize industrial fans for clean and fresh air circulation. Gymnasiums, warehouses, and underground parking garages also need industrial fans to ensure the health and safety of those using the facilities.
Industrial fans come in a variety of sizes and types for specific uses, functions, and applications. The sizes of industrial fans depend greatly on the size of the environment where they will be used. Typically used for high volume, high static pressure applications, industrial fans, and blowers are classified by a numerical designation based on the size and construction of the fan.
Today, more and more facilities and industries are installing these high-volume, low-speed (HVLS) fans as a complement to their HVAC systems. Why not? HVLS fans eliminate moisture and bacteria in buildings while operating more efficiently than conventional fans alongside. Furthermore, HVLS fans can move larger volumes of air than traditional floor or ceiling fans. In fact, a single fan can cover areas up to 22,000 square feet and can replace as many as ten to 20-floor fans, or smaller ceiling fans.
HVLS Fans Philippines History
The first HVLS fans was designed by Walter Boyd with large overhead that moved a large volume of air to the ground outward 360 degrees.
The invention was inspired by observations that dairy cattle stop eating during extreme heat or whenever they suffer from heat stress. This refusal or the minimal intake of food results to a drop in the rate of milk production. This creates further problems which challenged the competitiveness of farmers and looking at the bigger picture, damages the economy.
Until 1995, farmers only use small high-speed fans for livestock. These small high-speed fans were inefficient as their coverage are only limited to small areas while consuming huge amount of energy and requiring high level of maintenance. These excessive requirements therefore demands for higher costs.
After the invention of HVLS fans which mix fresh air with stale air, the effects to cattles were noticeable through an increase in milk production.
In addition, the first HVLS barn fan models used ten airflow blades that incorporated design characteristics developed at the National Aeronautics Space Administration (NASA).
In our country, there are many HVLS Fans Philippines supplies but none can match the level of quality and service by GreenMango Solutions Inc.
How do HVLS Fans Work?
It has been figured out that displacement or the amount of air that moves through the fan is insignificant.
Compared to high velocity air jet which dissipates quickly, a large column of air is able to travel farther than a small one. Furthermore, the friction between moving air and stationary air occurs at the periphery of the moving column. A large column has less periphery, thus becomes less “drag.”
Therefore, let us just say that a three-foot diameter fan has more than six times friction interface or the [ ] per cubic foot compared to the air column of a 20-foot fan. This concludes that a large, slow-moving fan cools better than a small, and high-speed fan.
When the down column of air from an HVLS fans reaches the floor, the air turns in the horizontal direction away from the down column in all directions. This air, which flows outward is termed “horizontal floor jet.” The floor jet’s height is determined by the diameter of the column of air. As a result, a fan with a larger diameter produces larger air column, which in turn produces a higher floor jet. This effect cannot be produced by small high-speed fans.
Moreover, the power to be able to drive a fan increases with the cube of the average speed through the fan. Airspeed, combined with the effectiveness of the fan if based on the objective to better cool wider areas and larger quantities, is met by large low-speed fans.
Energy and Cost Efficiency
First is that HVLS fans are both energy and cost efficient.
An HVLS fan is proven to save huge amount of energy as it consumes relatively the same amount of electricity required by a high-speed fan, while being able to move over 12 times the amount of air. A “down wash” feature was also enhanced, which increases airflow cubic foot per minute (CFM) by almost 30 percent with only minimal increase in power consumption.
Moreover, an HVLS fan saves on energy costs by increasing the thermostat temperature and at the same time maximizing the comfort level during hot periods or by warming the facility through destratification during cold period. Destratification is defined as a process in which the air or water is mixed in order to eliminate stratified layers of temperature. Therefore, these features surely save a significant amount of funds allotted to energy and heating bills, especially in larger facilities.
An HVLS fan is advantageous during hot periods as it acknowledges that airconditioning a large building can be really expensive and complex. Size, occupancy, loading docks, and large doors and windows make indoor climate difficult to control. Recirculating conditioned air allows the thermostat to be set higher during hot periods.
But by using energy-efficient fans in conjunction with air conditioning, companies can raise thermostat setpoints to save up to 30 percent on cooling costs without compromising comfort. As an HVLS fan’s blades slowly rotate, they effectively move air at 3 to 5 miles per hour. This air movement is sufficient to break up the moisture-saturated boundary layer that surrounds our bodies. As sweat evaporates, a cooling effect is produced.
It is also advantageous during cold periods. During these times, stratified air forms temperature layers, with the coolest air at the floor and the warmest air trapped at the ceiling. This phenomenon is caused by the fact that a warm air is approximately 5 percent to 7 percent lighter than a cool air.
Thus, keeping floor-level comfortable temperature requires huge energy costs from overheating upper air levels. An HVLS fan redirects warm air at the ceiling to the floor level, while cooler air at the floor is pulled up. Therefore, by using such technology, companies can also save as much as 30 percent on heating costs by using an HVLS fan, which lessen the burden on the heating system by allowing it to maintain the same thermostat setpoint but with less effort.
Given these already established facts that an HVLS fan reduce cooling and destratification costs by 30 percent, alongside the advantage that it also requires lesser costs to be able to operate, having an HVLS fan in a facility guarantees a quick Return on Investment or ROI.
Moreover, one HVLS fan can replace more than 25 smaller high-speed fans and which creates a clear evidence on energy and cost saving, whereas one HVLS fan costs just a fraction of operating 25 smaller fans per hour.
HVLS fans also ensure the safety and the quality of products.
One of the problems that industries located at locations with hot climates like the Philippines are humidity and condensation.
Condensation occurs when a warm, moist air contacts a cold surface. During hot periods, temperature swings and the results of condensation can bring great damage to unconditioned workplace environments. This destroys inventories, as well as create possible hazards in the workplace, especially towards mechanical supplies and equipment. It is because excessive moisture and humidity can rust metal products and even storage boxes. But, an HVLS fan can keep condensation from setting on the floor or to the product.
On the other hand, cool, moist environments also encourage the growth of mold and mildew, which produces unpleasant odors. Through providing well ventilation through efficient air circulation, an HVLS fan disperse cool, moist, stagnant air and its’ associated odors to ensure the cleanliness of facilities.
Whereas food products, especially produce, and medicines can spoil or be damaged if stored with improper temperature control. To be able to prevent these, an HVLS fan can eliminate hot or cold zones from floor to ceiling that damages a product’s integrity. With this, spoilage and other product damage costs will also be lessened.
Workers Health, Safety and Productivity
Everybody dreams of a healthy, safe, and productive working environment. Since the workers are one of the main contributors behind a company’s success, it is just as important to provide them a beneficial working condition.
One of the ways to achieve this is to ensure that air needs to circulate efficiently throughout the facility. Proper air circulation eliminates pollutants which cause variety of illnesses and other air-related concerns. HVLS fans provide air movement that dissipates stagnant air and mitigates poor air quality in order to provide greater comfort to workers. This will also be extremely beneficial to company owners, as financial loss from workers’ illnesses will be lessened.
Other than this, prolonged exposures to a hot environment and chemicals are extremely dangerous. By lowering effective air temperature, HVLS fans ensure the health of workers, from heat-related concerns such as fatigue, exhaustion, heat stress. Humidity Aside from this, humidity encourages the growth of airborne bacteria and contaminants such as chemical fumes, pollens, bio-aerosols or other volatile organic compounds or VOCs, which can also further result to other complications.
Humidity is also a primary cause of SBS. Sick Building Syndrome (SBS) is used to describe instances where occupants experience health and comfort issues relatively linked to time spent in an area.
Aside from SBS, there is also SSS. Termed as sweating slab syndrome (SSS), it occurs when moisture develops on surfaces such as warehouse floor. HVLS fans can reduce or even eliminate SSS by minimizing ceiling-to-floor temperature differentials and by increasing surface evaporation.
Furthermore, studies have shown that as temperatures go up, productivity drops, and even just a few degrees temperature difference can have a 5% or more degradation effect in terms of productivity.
Humidity plays a major role in the perception of heat in a building, and eliminating moisture is one of the best ways to create a healthy atmosphere comfortable enough for workers.
Best HVLS Fans Philippines
The need for HVLS fans especially in countries with very hot climates such as the Philippines continuously increases.
These ceiling fans are for sale at reasonable prices depending on the sizes and quality of material used for production. Most HVLS fans that you can find on the Internet have prices that range from $ 1800 to $ 8000, manufactured by foreign industries.
The good news is that there are HVLS fans manufacturing industries here in the Philippines which are made out of quality materials, which make them reliable and serves as good investments.
One of these Philippine-based HVLS fans manufacturing industries is GreenMango, a solutions company. The company has four core values which are providing quality, pursuing excellence, building lasting relationships and advocating on doing good.
The GreenMango HVLS Fans Philippine Series offer seven products which are:
HVLS FANS | INDUSTRIAL FANS | CEILING FANS
Zephyr is the premium 5-blade HVLS fan series that is designed for superior wind speed performance and efficiency that leads to high energy savings. Zephyr is powered by a new revolutionary Permanent Magnet Synchronous Motor. Zephyr comes in three sizes 18 ft, 20ft and 24 ft. Zephyr is the choice for bigger spaces with higher ventilation requirements. Similar to Vento, Zephyr is perfect for sports, recreation, entertainment, traffic hubs, commercial and even industrial uses. Read More >>>
Vento is simple 5-blade HVLS fans that comes in two sizes, 22 and 16 feet. Vento is best for commercial spaces that demands comfort and wind speed. It’s suited for sports (fitness clubs, gym/athletic training stadium), recreation & entertainment (amusement park, zoos, children’s playground), traffic hubs (airport, railway station, and bus station), commercial place ( shops, restOS, supermarkets), others (warehouses, factories, museums, and outdoor venues). Read More >>>
Brisa is an 8-blade 14-ft HVLS fan with seamed edge design with fluorocarbon paint technology. The fan blade tail is meteor-inspired that when the fan is turned on the tail will result in a gorgeously beautiful silhouette. The unique middle cover hides the intersection of the shell and fan blade, making the design even more luxurious adaptive to all design and structures. Brisa is perfect for small sports paces and commercial such as restaurant and small to medium retail centers . Read More >>>
Unlike most HVLS fans manufacturers, GreenMango allows more air to move from center and along the blades driven evenly downwards leaving no center space uncooled; The cross-sectional design of the blade decreases airflow resistance. The blade tilts by 3 degrees allowing conical airflow instead of a cylindrical one covering a larger area that is similar to natural, intermittent wind. Moreover, GreenMango offers bonus features wherein you can customize the color of your fan so that it can blend with the ceiling, combined with a wood grain finish.
These HVLS fans also guarantee safety as the blade handles are inserted in a concave-convex hole and are locked at the end of assembly hubs in which the assembly hubs can be easily installed, tested and is maintained free for high reliable daily operation.
They are designed to withstand the pressure between the hub and the connectors, which substantially enhance speed and safety. They are also certified that the strength at the end of the hub is 10x more than centrifugal force and stress generated by blade rotation.
Whereas, the rubber cushion on the connector isolates the vibration by the blade. The irregular shape of the connector locks the position of the blade to prevent loosening. Moreover, the patented design device uses a self-locking structure to ensure safety, and reliable connection between the gear motors axle and the hub, in case the bolt fastening loosens.