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ASHRAE 51-1985
Standard 51-1985 -- Laboratory Methods of Testing Fans for Ratingstandard by ASHRAE, 1985
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The purpose of this standard is to establish uniform methods for laboratory testing of fans and other air moving devices to determine performance in terms of flow rate, pressure, power, air density, speed of rotation, and efficiency, for rating or guarantee purposes.
It is not the purpose of this standard to specify the testing procedures to be used for design, production, or field testing.