Whirly bird roof ventilator

Types of whirly bird roof ventilators

There are two common types of whirly bird roof ventilators: the traditional metal whirly birds and the newer plastic whirly birds.

• Traditional metal whirly birds:

  Old metal whirly birds have two parts: a base and a top spinning part called a turbine. The base, which is fixed to the roof, connects to the turbine. Underneath the turbine sits another smaller base called the vent base. The vent base is circular and has some holes in it to let air through. As the wind blows, the turbine spins around, letting the air go through its vent base and out of the whirly bird. This movement usually expels more air than what was entered.

• Modern plastic whirly birds:

  Plastic whirly birds are more popular now, made from materials like strong polystyrene. They are lighter and cheaper than metal whirly birds. Plastic whirly birds work in the same way as metal ones. However, the design of plastic whirly birds may differ slightly from that of traditional metal whirly birds, so understanding their specific component and functio

Specification & Maintenance

The performance of whirly bird roof ventilators is impacted by their specifications. Several key specifications are as follows:

• Diameter: The diameter of a whirly bird ventilator indicates the size of the product. Common diameters range from 150mm to 400mm. Larger diameter ventilators typically have higher airflow volumes, which are suitable for larger buildings or warmer climates.
• Material: Whirly bird roof ventilators are usually made from durable materials such as stainless steel, aluminum, or PVC. Stainless steel and aluminum offer superior durability and resistance to corrosion, making them suitable for long-term use. PVC is lightweight, cost-effective, and easy to install.
• Base design: Whirly birds feature different base designs to suit various roof types and installation requirements. Some common base designs include a flat base, a sloping base, and a clamping base. The flat base is suitable for flat roofs. The sloping base is designed for pitched roofs. The clamping base provides a secure clamping function for roofs with gaps.

Regular maintenance can ensure that whirly bird roof ventilators work effectively and extend their service life. Here are some maintenance methods:

• Regular cleaning: Using soap or detergent and warm water to clean the ventilator can keep its appearance and functioning. Cleaning can remove dirt, dust, and other debris. Moreover, cleaning the bottom and capping components of the base can improve the ventilation effect.
• Lubrication: Whirly birds usually have a rotating shaft and bearing, which requires regular lubrication to maintain smooth rotation and reduce friction. Users can apply a small amount of lubricant or grease to the rotating shaft and bearing.
• Regular inspection: Users should regularly inspect the ventilator to check for damage or looseness. If any issues are found, they should repair or replace them promptly. If the blades are damaged, they should be replaced immediately, as this will otherwise affect the ventilation effect and the roof's sealing performance.

Scenarios of whirly bird roof ventilators

Whirly roof ventilators play an essential role in various industries by providing ventilation. Here are some specific usage scenarios for whirly birds.

• Industry warehouse and factories

  The use of whirly birds in industry buildings can help reduce static electricity production. This is made possible by constantly circulating air and keeping it dry. Whirly birds also assist in keeping chemical stores in the industry buildings ventilated. As a result, employees are exposed to fresh air. Furthermore, they reduce humidity by allowing moisture to escape. Consequently, the whirly birds contribute to a comfortable working environment. At the same time, they lower the risk of equipment contamination from mold or chemical reactions.

• Livestock farms

  Livestock farming requires proper ventilation to keep the animals healthy and improve their productivity. Whirly bird ventilators can reduce ammonia concentration by increasing airflow in places like poultry sheds and cattle barns. They improve air circulation, and hence animals stay comfortable. As a result, livestock farms can achieve optimal growth and greater output. Additionally, the whirly birds can control the temperature in livestock barns. For example, on hot summer days, they can help lower the inside temperature by up to 5-10°C. This cooling effect is important for reducing heat stress for animals like pigs and poultry. It also boosts livestock health and farm productivity.

• Parking garages

  Parking garages, whether underground or in a multi-storey layout, can easily accumulate carbon dioxide from vehicles and other pollutants. Installing whirly bird vents on the roof helps to extract stale air while drawing in fresh air from outside. The constant air circulation reduces the concentration of harmful gases. It also makes the garage a safer and more comfortable space for vehicle users and attendants. The same can be applied to tunnels where the flow of traffic is high.

• Power plants

  Whirly birds are widely used in the ventilation system of power plants. For example, they can help exhaust heat generated by transformers. By reducing heat buildup inside transformer enclosures through continuous air movement, whirly birds extend the lifespan of the equipment. Other power plant facilities like turbines, boilers and generators also benefit from whirly bird ventilation. Excess moisture and harmful gases are removed, creating a safe and comfortable working space for both machines and human operators.

How to choose whirly bird roof ventilators

Before purchasing whirly birds for resale, business buyers must consider the following factors:

• Roof pitch compatibility

  They should get whirly birds that can accommodate different roof pitches. Provide different options for roof pitches so customers with various angles can find a suitable choice.

• Material durability

• Ventilation needs

  Consider customers who are likely to purchase more whirly birds for pets and those for residential use. Customers with more rooms and living spaces are likely to require whirly bird ventilators with more units. Also, whirly birds used for commercial buildings are ventilated better than those used in households.

• Aesthetic variety

• Electric whirly birds

  These are whirly birds fitted with a solar panel that powers them. A customer may want to purchase whirly birds with a solar panel to take advantage of their intelligent functionality. It's ideal to store all the different types to cater to individual customer preferences.

Whirly bird roof ventilator FAQs

Q1: Are whirly birds effective?

A1: Whirly birds are effective in roof ventilation. They improve airflow in the roof space by removing heat and moisture, thereby lowering the house internal temperature.

Q2: Do whirly birds leak?

A2: Whirly birds can leak, but only if they are not installed correctly or maintained as they should be. A well-installed whirly bird won't leak.

Q3: How many whirly birds do I need?

A3: The number of whirly birds needed for a roof ventilator depends on some factors, including the size of the building, the roof area, and the amount of heat and moisture that needs to be exhausted.

Q4: Can whirly birds be installed in the rain?

A4: It is not recommended to install whirly birds in the rain. This is because water can prevent the sealing compound from adequately bonding and curing.