Thermal Efficiency
Thermal efficiency, abbreviated as \(\eta_{th}\) (Greek symbol eta), a dimensionless number, is the fraction of heat that is converted to work or desired output divided by required input.
Thermal efficiency Formula |
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\(\large{ \eta_{th} = \frac{ W }{ Q_H } }\) | ||
Symbol | English | Metric |
\(\large{ \eta_{th} }\) (Greek symbol eta) = thermal efficiency | \(\large{dimensionless}\) | |
\(\large{ W }\) = work out | \(\large{ ft-lbf }\) | \(\large{J}\) |
\(\large{ Q_H }\) = heat input | \(\large{\frac{Btu}{lbm}}\) | \(\large{\frac{J}{kg}}\) |
Tags: Thermal Equations Welding Equations Efficiency Equations