objectives
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Objectives. Learn about Fans Discuss Exam Final Project. Centrifugal fans. Axial Fans. Fan Laws. “Approximate relationships” Given two aerodynamically similar fans, can extrapolate performance data Be very careful. Question. - PowerPoint PPT Presentation
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Objectives
Learn about Fans
Discuss •Exam •Final Project
Centrifugal fans
Axial Fans
Fan Laws
• “Approximate relationships”
• Given two aerodynamically similar fans, can extrapolate performance data
• Be very careful
Question
• How does fan power consumption vary with volumetric air flow rate?
Controlling Air Flow
Dampers
Effect on Fan Curve
VAV Operation
Summary of Air Distribution Systems
• Select diffuser based on ADPI• Given a layout of duct system
• Calculate total pressure drop• Identify fittings • Deal with non-circular ducts
• Use fitting loss coefficient or equal length method
• Select the fan based on fan and duct curve
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