TR 17 | Section 2 | Eq. 1

Non-dimensional HRR (compartment)

Calulates the non-dimensional Heat Release Rate

Reference

Wade, C.A., 2013. Room size limits when using a fire zone model for smoke-filling calculations. Technical Recommendation TR 17. BRANZ.

Equations

Q^{*} = \dfrac{\dot{Q}}{\rho_a \cdot c_p \cdot T_a \sqrt{g} \cdot H_e^ \frac{5}{2}}

Heat Release Rate ( \dot{Q} ) — kW

Density of air at ambient temperature ( \rho_a ) — kg/m^{3}

Heat capacity of air at ambient temperature ( c_p ) — kJ/kgK

Ambient temperature ( T_a ) — K

Gravity acceleration ( g ) — m/s^{2}

Enclosure height ( H_e ) — m