- Дата: 24-09-2022, 22:25
Consequently, the roofing membrane heats up faster, thus inflicting a higher FSR. From a practical viewpoint, the Exposure is related as the roof construction below the PV array is part of the building envelope and thus the only barrier that prevents the fire from entering the property and remodel the roof hearth right into a constructing hearth which could end result in more severe consequences. That was most definitely not the case as a result of restricted air entrainment in the experiments with low gap heights, whereupon it's deemed that the value of the particular fireplace load was not effectively-represented by qf. For the experiments with inclined modules, the temperature findings were much less constant (Figure 14). Initially, the quicker flame unfold rate (see Figure 10b) and lower Exposure (see Figure 12b) prompted a shorter period of time, the place the higher surface of the roof mock-up gained heat from the hearth. 18), the crucial hole peak was recognized to be round eleven cm, as no flame spread occurred for a hole height of 12 cm, and constant results had been obtained when the gap was 10 cm (see Figure 8a). The crucial gap top interval reduced slightly when the stainless-steel board was replaced with a PV module, as there was a major difference in the flame spread size (FSL) when the hole top was diminished from 12 cm to 11 cm (see Figure 8a). As anticipated, the experiments with the stainless-steel board with a gap peak of 11 cm have some scatter, as they're in the transition area for the crucial peak.