[[wiki-architecture]] · [[Architectural Concepts and History]] · [[ARCHITECTURE]] · [[000]] # Beale number In mechanical engineering, the Beale number is a parameter that characterizes the performance of Stirling engines. It is often used to estimate the power output of a Stirling engine design. For engines operating with a high temperature differential, typical values for the Beale number are in the range 0.11−0.15; where a larger number indicates higher performance. == Definition == The Beale number can be defined in terms of a Stirling engine's operating parameters: B n = W o P V F {\displaystyle B_{n}={\frac {Wo}{PVF}}} where: Bn is the Beale number Wo is the power output of the engine (watts) P is the mean average gas pressure (Pa) or (MPa, if volume is in cm3) V is swept volume of the power piston (m3, or cm3, if pressure is in MPa) F is the engine cycle frequency (Hz) == Estimating Stirling power == To estimate the power output of an engine, nominal values are assumed for the Beale number, pressure, swept volume and frequency, then the power is calculated as the product of these parameters, as follows: W o = B n P V F {\displaystyle Wo=B_{n}PVF} == See also == West number == References == - [[Building Construction]] - [[Building Construction/Area Programming]] - [[Building Construction/Construction & Materials]] - [[Building Construction/Construction & Materials/Building Material]] - [[Building Construction/Construction & Materials/Building Material/Concrete and Cement]] - [[Building Construction/Construction & Materials/Building Material/Glass and Glazing]] - [[Building Construction/Construction & Materials/Building Material/Insulation Materials]] - [[Building Construction/Construction & Materials/Building Material/Metals and Alloys]] - [[Building Construction/Construction & Materials/Building Material/Natural Stone]] - [[Building Construction/Construction & Materials/Building Material/Polymers and Composites]] == External links == Stirling Engine Performance Calculator Beale number calculator