Backward Curved Centrifugal Fan

In some cases, continuously running a ventilation system can be costly that figure increases rapidly, when the fan is mismatched to the system or prone to overloading under fluctuating loads. For engineers specifying air movement equipment on long-term process lines, the question is not only just airflow capacity. It is how the fan behaves when system conditions change and actual ownership expenses after few years of continuous operation.

The Backward Curved Centrifugal Fan can be a good perfect solution for that. By using backward-inclined impeller, it can geometry produces a self-limiting power curve, which means as system resistance drops and airflow increases, as a result motor power demand levels off. No matter what is the operating point, this significantly reduces the risk of motor overload, which removes one of the most common causes of unplanned downtime in continuous duty installations. AMCA-tested aerodynamic efficiencies are typically 80–90%, yielding measurable energy savings over time, that 15% to 25% higher than conventional forward curved designs running the same duty point. As a result, measurable reduction in energy consumption that compounds over the service life of the installation.

This structure built with industrial grade carbon steel framework, also offers SUS304 and SUS316 wetted-parts options for corrosive or hygienic process airstreams. The unit operates reliably in process gas temperatures up to 600°C with special modification. Integration with direct-belt or shaft drives makes Backward Curved Centrifugal Fan design more convenient for engineers. Which is one reason it should be a good fit for new builds, retrofits, and OEM assemblies.