negative pressure exhaust fan types, wall exhaust fan types

Types of Wall Mount Negative Pressure Exhaust Fans

Generally there are 2 types of exhaust fans: box fan and cone fan.

The cone type fan has larger air volume because of its larger and deeper wind-sucking tube, the bell mouth design of cone type fan which can be effectively gather the air volume and concentrate the wind direction.

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wall mount exhaust fan, industrial wall fan, wall industrial exhaust fan

Wall Mount Exhaust Fans for Industrial Applications

Wall mount exhaust fans are exhaust fans that are mounted along interior or exterior walls near heavy machinery or in areas that experience extreme levels of moisture and exhaust gasses.  These exhaust fans help cool equipment and prevent early corrosion and deterioration of metal surfaces.

Wall mount exhaust fans are one of the most popular methods used for industrial ventilation.  In an industrial environment, ventilation is used to control exposure to airborne contaminants, such as fumes, dusts, molds, asbestos fibers, toxic chemicals, moisture, vapors, etc. that are released in a work environment.  However, not only do the exhaust fans protect your equipment, they also provide a healthy, safe, and more productive work environment for employees.

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China exhaust fan manufacturing places

The Top 3 Places to Find Exhaust Fan Manufacturers in China

Due to the recent rapid increase in the number of exhaust fan manufacturers in China, the price of exhaust fans has dropped significantly.

Utilization of an exhaust fan can resolve the issue of poor ventilation and improve the ventilation and cooling of a facility by approximately 90-97%. Using air convection and negative pressure ventilation, the exhaust fan is installed on the wall opposite to a door or window to quickly discharge hot, contaminated air outdoors and introduce clean, cool air into a facility.

The Number of Exhaust Fans Manufactured in China is Projected to Reach 4,300,000 Units in 2019

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greenhouse cooling fan, greenhouse exhaust fan, greenhouse fan

How to Calculate CFM of Exhaust Fans for Greenhouses?

Greenhouse ventilation volume is based on a specific formula related to the greenhouse dimensions no matter what your plant types and climate zone are. Although it may seem complicated, choosing the right shutter exhaust fans for your greenhouse cooling system does not require complex mathematical formulas or difficult calculations,to find out how many CFM(cubic feet per minute) do you need for greenhouse and how many exhaust fans you need for your greenhouse, only one  simple greenhouse exhaust fan calculator tip is all that’s needed. We’ll show you how to do them below.

First, Calculate Total CFMs for Greenhouse Exhaust Fans

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greenhouse cooling, greenhouse ventilation, heavy duty wall mount fan

How Do You Cool Down A Greenhouse?

As the weather is getting hot, summer comes. With long daylight and sufficient rain, summer is the best season for plants to grow. But too much sunlight or heat will affect the growth of plants, therefore, we must find the best way to ventilate and cool the greenhouse.

Which are the efficient ways we can choose to maximize cooling the greenhouse?

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air conditioner cooling in virus pandemic, air cooler cooling

Can We Use Air Conditioners in Covid-19 Pandemic?

As COVID-19 cases rise rapidly throughout the world, the entire world is doing everything to prevent and control the pandemic. Now that summer comes, cooling is necessity in the summer, most of us would choose air conditioners for cooling, but is it right to choose it in the circumstances of the virus pandemic?

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top 5 exhaust fan manufacturer, top 5 ventilation fan manufacturer

2020 Top 5 Ventilation Exhaust Fan Manufacturers in China

China is the main production center of exhaust fans used for industrial ventilation and cooling, they are widely installed in barns, farms, greenhouses, factories, etc.  Here we list top 5 exhaust fan manufacturers in China for your reference:

1.  Foshan City Nanhai Popula Fan Co.,Ltd

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how exhaust fans work

How Do Exhaust Fans Work?

Exhaust fans are installed facing the door or window, which intakes the outdoor fresh air, and extract the air inside the room, any poor ventilation can be improved, the ventilation effect can reach 90%-97%.

What Can Exhaust Fans Do?

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Can Air Cooler Be Used Without Water?

First of all , we should know how Air Cooler works. The evaporation system inside the air coolers is essential, it cools the air with the help of water, the Air Cooler sucks hot air from the outside and passes the hot air through the evaporative cooling pads fitted in the Air Cooler. At the same time, the water pump will send the water to the evaporative cooling pad. The water is required to continuously run thoroughly through the cooling pad in the Air Cooler. When the hot air passes through the evaporative cooling pad, the process of evaporation occurs. As a result, humid cool air will be released by the Air Cooler to bring down the temperature of the room.

It is to be stated that if you don’t provide water to the Air Cooler, the cooling pads of air cooler will stay dry and the evaporation won’t work out again. As a result, the air released from the Air Cooler will be hot air only. Air Cooler will work without water as a straightforward fan.
The hot air converts to cool air by evaporating the water through the evaporative cooling pads in the air cooler. Without water in the air cooler, there will be no evaporation. Then, the air cooler can be used as fan only.
The conclusion is that you need water to get cool air from the Air Cooler.  For an Air Cooler to give cool air , supply of the water is must.

If you want to know more details about Air Cooler, please do not hesitate to contact us!

Exhaust Fan Applications

Indoor air often contains a range of pollutants, allergens, moisture, and dust in places with poor ventilation, to remove these airborne pollutants, exhaust fans are often used for air ventilation, circulation and even cooling. Here are the most common applications of exhaust fans:

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