裕阳YY433双火屋顶屋面灭火器

This European Specification specifies four methods for determining the performance of roofs to external fire exposure. The four methods assess the performance of roofs under the following conditions:

Test 1 - with burning brands

Test 2 - with burning brands and wind

Test 3 - with burning brands, wind and supplementary radiant heat

Test 4 – with two stages incorporating burning brands, wind and supplementary radiant heat


This Test 2 equipment consists of:


Air channels equipped with fans and a lid

This air channel is made of 1.0 mm thick steel plates. The wall channel section placed between the lower and the upper air channels is made of steel plates and non-combustible fibre reinforced calcium silicate boards with a thickness of 11 ± 2 mm and a density of 680 ± 50 kg/m3.

Crib ignition stand

The crib ignition stand is protected from air currents consists of a support of the wood crib and a line burner with five vertically oriented burner tubes. The line burner is mounted centrally on the support with the axes of the burner tubes and the lowest edge of the crib in the same plane.

Wood crib

8 pcs (in which 6 pcs are nailed to the remaining 2 pcs at a distance of 8 mm between each of them) of 10 x 10 x 100 mm pine wood containing no knots make the source of fire.

Constant temperature drying oven of 105 ± 5°C

Desiccator

Balance

Timer

Air velocity measuring devices

Flow meter

Detail

Datasheet


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