Centrifugal Fan Apparatus (SMT-FM-65)

This apparatus is designed to study the performance characteristics of an industrial centrifugal fan, allowing students to measure the relationship between flow rate, pressure head, and efficiency. It provides a practical method for generating the fan characteristic curve and analyzing how variables like speed, system resistance, and impeller blade direction affect its operation. The unit features a bench-top setup with a centrifugal fan connected to inlet and outlet ducts, each equipped with pressure and temperature sensors. A manually controlled louvre at the outlet allows for precise adjustment of the airflow rate, and the fan motor speed is variable. A key feature is the ability to reverse the rotor blade direction to study its impact on performance. All measurements are displayed on a built-in LCD and can be transferred to a computer for detailed analysis and efficiency calculations. Its primary application is in mechanical engineering education for teaching fluid mechanics and turbomachinery principles. The key benefit is the hands-on investigation of fan performance under different conditions, enabling students to plot characteristic curves, understand the trade-offs between pressure and flow, and grasp the practical considerations for selecting and operating centrifugal fans in HVAC and industrial systems.