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MEASUR-Tools-Suite v1.2.4
The MEASUR Tools Suite is a collection of industrial efficiency calculations written in C++ and with bindings for compilation to WebAssembly.
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MEASUR-Tools-Suite v1.2.4
The MEASUR Tools Suite is a collection of industrial efficiency calculations written in C++ and with bindings for compilation to WebAssembly.
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Power-to-airflow calculations interpolate linearly between no-load and unload until unload power is reached, then interpolate to the maximum-flow point.
\begin{equation}\label{eq:centrifugal-mod-unload-low} f_Q = (f_P - f_{P,NL})\frac{f_{Q,UL}}{f_{P,UL} - f_{P,NL}} \quad \text{for } f_P < f_{P,UL} \end{equation}
\begin{equation}\label{eq:centrifugal-mod-unload-high} f_Q = f_P\frac{1 - f_{Q,base}}{1 - f_{P,UL}} + 1 - \frac{1 - f_{Q,base}}{1 - f_{P,UL}} \quad \text{for } f_P \ge f_{P,UL} \end{equation}
| \(f_{P,NL}\) | No-load power fraction \([\unit{ \unitless}]\) |
| \(f_{P,UL}\) | Unload power fraction \([\unit{ \unitless}]\) |
| \(f_{Q,UL}\) | Unload airflow divided by full-load airflow \([\unit{ \unitless}]\) |
| \(f_{Q,base}\) | Unload airflow divided by maximum airflow \([\unit{ \unitless}]\) |
1.9.8