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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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Below the blow-off power point, useful airflow is the blow-off airflow fraction minus the specified blow-off fraction. Above that point, useful airflow follows a linear segment from the blow-off point to full load.
\begin{equation}\label{eq:centrifugal-blowoff-low} f_Q = f_{Q,BO} - f_{BO} \quad \text{for } f_P \le f_{P,BO} \end{equation}
\begin{equation}\label{eq:centrifugal-blowoff-high} f_Q = \frac{1 - f_{Q,BO}}{1 - f_{P,BO}} \left(f_P - 1 + \frac{1 - f_{P,BO}}{1 - f_{Q,BO}}\right) \quad \text{for } f_P > f_{P,BO} \end{equation}
\begin{equation}\label{eq:centrifugal-blowoff-airflow} Q_{BO} = (f_{Q,BO} - f_Q)Q_{FL} \end{equation}
| \(f_{P,BO}\) | Blow-off package power divided by full-load power \([\unit{ \unitless}]\) |
| \(f_{Q,BO}\) | Blow-off airflow divided by full-load airflow \([\unit{ \unitless}]\) |
| \(f_{BO}\) | User-specified blow-off fraction \([\unit{ \unitless}]\) |
| \(Q_{BO}\) | Calculated blow-off airflow \([\unit{ \acfm}]\) |
| \(Q_{FL}\) | Full-load airflow \([\unit{ \acfm}]\) |
1.9.8