Fans and blowers provide air for ventilation and industrial process requirements. Fans generate a pressure to move air (or gases) against a resistance caused by ducts, dampers, or other components in a fan system. The fan rotor receives energy from a rotating shaft and transmits it to the air
Difference between Fans, Blowers and Compressors
Fans, blowers and compressors are differentiated by the method used to move the air, and by the
system pressure they must operate against. As per American Society of Mechanical Engineers
(ASME) the specific ratio - the ratio of the discharge pressure over the suction pressure – is
used for defining the fans,blowers and compressors .
DIFFERENCES BETWEEN FANS, BLOWER AND COMPRESSOR
Equipment Specific Ratio Pressure rise (mmWg)
Fans Up to 1.11 1136
Blowers 1.11 to 1.20 1136 – 2066
Compressors more than 1.20 –
Difference between Fans, Blowers and Compressors
Fans, blowers and compressors are differentiated by the method used to move the air, and by the
system pressure they must operate against. As per American Society of Mechanical Engineers
(ASME) the specific ratio - the ratio of the discharge pressure over the suction pressure – is
used for defining the fans,blowers and compressors .
DIFFERENCES BETWEEN FANS, BLOWER AND COMPRESSOR
Equipment Specific Ratio Pressure rise (mmWg)
Fans Up to 1.11 1136
Blowers 1.11 to 1.20 1136 – 2066
Compressors more than 1.20 –
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