Temperature exhaust fan is excessive experts years of testing, optimization, design, research and development of new products with respect to the higher efficiency of previous products, the curve is more flat, more energy efficient. Temperature exhaust fan TV Direct drive motivation, exhaust fan can be installed according to the different requirements of senior civil construction, the use of single-speed or multi-speed drive form, in order to achieve when ventilation temperature exhaust ventilation and firefighting purposes, with a horizontal or features can be installed vertically. Exhaust fan choice points: 1, the exhaust fan chosen as the main control parameters temperature, air flow, total pressure, efficiency, noise, electrical power, speed and shaft power. 2, the exhaust fan at a temperature not higher than 85 ℃ conditions should be long-term normal operation. 3, exhaust fan shall ensure that: When the transmission medium at a temperature of 280 ℃ continuous work 30min exhaust fan maintenance and medium temperature cooled to ambient temperature still continuous running. 4, at the rated speed in the work area exhaust fan, fan pressure curve measured with the description given in the curve should meet the following requirements: 5, axial-flow exhaust fan at a predetermined flow rate, corresponding to The pressure deviation of ± 5%. 6, the centrifugal exhaust fan at a predetermined flow rate of the exhaust fan price, corresponding to the pressure deviation of ± 5%. 7. A sound level than the noise limits should be consistent with the provisions of JB / T8690-1998 the exhaust fan in the specification given operating point under. 8, exhaust fan can be an ordinary or special steel centrifugal fan axial exhaust fan. Exhaust fan specifications according to "fire protection design of tall buildings" in the regulations. The minimum air volume exhaust fan 7200m / h, the maximum air flow should not exceed 60000m / h (refers to a partition of the maximum exhaust air volume). 9, exhaust fan flow should be required to increase airflow value of not less than 10% to 20% of the surplus amount. 10, pressurized smoke exhaust fan pressure value shall be the most unfavorable loop system to calculate and ensure the value of residual pressure in the stairwell 40 ~ 50Pa. The residual pressure value inside the front room, shared room, fire elevator room, refuge floors, etc. 25 ~ 30Pa. 11, fire exhaust fan should be consistent with the current standard JB / T10281-2001 "fire exhaust fan technical conditions." 12, fans should exhaust system individually. Exhaust fan should be in the same position or an upper layer of smoke region. Exhaust fan manufacturers | exhaust fan | liter by liter Rui Rui Electrical and Mechanical Ventilation and Air Conditioning Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Swiss mechanical and electrical liter into the brilliant and you work for a better future!