First, the main indicators of range hood Air volume, air pressure, and noise are the three indicators that measure the suction power of range hoods. 1. Air volume refers to the amount of air exhausted by the hood when the static pressure is zero. According to the national regulations, the value of this indicator should be greater than or equal to 7m3 of air per minute. In general, the greater the amount of wind, the more quickly and timely emissions fumes. However, the larger the amount of exhaust air, the better. Excessive ventilation will take away too much heat and affect the normal heating of stove fuel. The best ventilation is 14~15 m3/min. 2. The wind pressure refers to the static pressure value of the range hood when the air volume is 7 m3/min (7 cubic meters of air per minute). According to the national regulations, the value of this indicator should be greater than or equal to 80Pa. The greater the wind pressure, the more thorough the smoke is sucked and exhausted. Therefore, when other indicators are good, the larger the wind pressure, the better. 3. Noise is also an important technical indicator for measuring the performance of range hoods. It refers to the range hood rated voltage, rated power, with the highest speed gear operation, according to the measured sound power level (A). According to the national regulations, the value of this indicator is not more than 74 decibels (sound pressure level + 14 = sound power level). But the noise is proportional to the amount of wind, that is, the greater the amount of wind, the greater the noise. Hood suction is not an independent performance. Motor power, inlet area, screen design, fan system, and even the length of the exhaust pipe will affect the suction of the hood. Second, the main material and characteristics of range hood The most common range hoods on the market today are: cold-rolled iron plates, "aviation" Aluminum, toughened glass, and stainless steel. Kitchen sink villa design glass supor stainless steel appliances 18mm Aluminum Pipe,Aluminum Pipe 60mm,Aluminum Pipe 7075 Jinfa Copper And Aluminum Company Limited , http://www.gdaluminumcoil.com
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