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Selection Of Fans And Hoods For Diesel Generator Sets

Jul. 27, 2022

Diesel generator sets need water to cool the engine during operation. There is a large fan in front of the engine to blow air for the radiator of the water tank. If the doors and windows are closed in the engine room, the air cannot form a good circulation, which will affect the heat dissipation. In this article, the generator manufacturer of Jiangsu Starlight Electricity Equipments Co.,Ltd. will explain in detail the selection of the fan and the wind shroud of the diesel generator set.

 

Fan choice.

(1) Suction and exhaust fans: For equipment with high running speed, when the engine is installed at the front of the equipment, selecting a suction fan can make good use of the oncoming wind to enhance the cooling effect, when the engine is installed at the rear, generally select an exhaust fan.

 

For equipment with low walking speed, you can choose a suction fan or an exhaust fan. Generally speaking, since the suction fan uses the cooler air to cool the water tank, the efficiency is significantly higher than that of the exhaust fan.

 

(2) Fan speed and diameter: Under the same power consumption, the cooling effect and noise of low-speed and large fans are significantly better than those of high-speed and small fans. In addition, when selecting a fan, pay attention to the linear speed of the blade tip of the fan not exceeding 4200~5000m/min.

 

diesel generator set


(3) The distance from the fan to the radiator core: the suction air is greater than 2 inches, and the exhaust air is greater than 4 inches.

 

(4) The distance from the fan to the engine: if the fan support bending moment (7NM) permits, it should be as far as possible, but the thickness of the fan pad is generally not allowed to exceed 3 inches.

 

(5) It is forbidden to use elastic relaxation washers when installing the fan to prevent the fan flange from being damaged due to concentrated stress.

 

Choice of air hood.

(1) There are three types of commonly used air guides: box type, ring type and throat type.

 

(2) The air guide cover and the radiator must be sealed.

 

(3) The gap between the fan blade tip and the air hood is generally 1.5~2.5% of the fan diameter.

 

(4) The position of the fan in the air hood: suction, 2/3 is inside, exhaust, 1/3 is inside.

 

The above is the selection of diesel generator fans and air hoods organized by Jiangsu Starlight Electricity Equipments Co.,Ltd. for you. Jiangsu Starlight Electricity Equipments Co.,Ltd. reminds: users should regularly check whether the installation of the fan is firm, and whether all the blades have obvious bending deformation. If it is found, it should be replaced immediately to avoid accidents such as breaking the fan blades and breaking the water radiator due to the poor balance of the fan.

 

Jiangsu Starlight Electricity Equipments Co.,Ltd. is one of the earliest manufacturers of generators and diesel generator sets in China. The company was established in 1974 and the company occupies an area. With an area of 86,000 square meters and a building area of 45,000 square meters, it has 64 sales and service departments across the country to provide users with one-stop service of design, supply, debugging and maintenance at any time. Welcome customers to come to consult and visit. Looking forward to your inquiry, please send email to us for details sales@dieselgeneratortech.com.


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