enme351_hw1

enme351_hw1 - C.J. Gorrell HW1: ENME351 1. A. Volumetric...

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C.J. Gorrell HW1: ENME351 1. A. Volumetric flow of air through a duct, to determine the volume of air flowing through a duct towards or from a heat exchanger; with this information I can adjust the damper positioning gin the duct. B. Light intensity; to determine the amount of light flowing into a camera lens; to adjust the aperture of the camera lens to mediate incoming light. 2. a. The flow rate of air needs to be accurate to within 5CFM ideally. b. The precision for this measurement does not need to be extremely close. Only within a few CFM. A single calibrated device with 5 to 10 samples per damper is usually all that is required. c. To measure volumetric flow rate, two variables should be measures. Cross sectional area, and velocity. Velocity can also be determined from pressure variables in the duct. d. a velocity (generator) sensor, a piezoelectric pressure sensor, and a displacement sensor is needed. e.
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This note was uploaded on 02/13/2011 for the course ENME 351 taught by Professor Smela during the Spring '08 term at Maryland.

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enme351_hw1 - C.J. Gorrell HW1: ENME351 1. A. Volumetric...

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