PD 7974-1 | Eq. 41, 42, 43 & 44

Maximum enclosure temperature

Calculates the maximum enclosure temperature after flashover

Reference

BSI, 2019. PD 7974-1: Application of Fire Safety Engineering Principles to the Design of Buildings - Initiation and Development of Fire within the Enclosure of Origin (Sub-system 1). BSI

Equations

Input | Eq. 41

T_{g(max)} = 6000 \dfrac{\left(1 - e^{-0.1 \cdot \Omega} \right)}{\sqrt{\Omega}} Where: \Omega = \dfrac{A_t}{A_v \sqrt{H_v}}

Input | Eq. 43 (Optional)

T_{g} = T_{g(max)} \left(1 - e^{-0.05 \cdot \Psi}\right) Where: \Psi = \dfrac{m_e}{\left[A_t \cdot A_v\right]^{0.5}}

OpenFire

Maximum enclosure temperature

Equations

Input | Eq. 41

Input | Eq. 43 (Optional)

Inputs