The inlet turbulent intensity was varied from 2 percent to 100 percent while the angle of attack of the v gutter was varied from 0 degrees to 30 degrees.
Gutter brush angle of attack.
The same numerical models which were used in the first section were also used here.
The brush angle of attack β which is measured from the horizontal plane can be 0 5 10 and 15.
Due to the slope of the gutter and the value of ξ the first two angles provide an equivalent β of negative value i e considering a horizontal road surface.
Despite the relevance of studying gutter brush performance there are a very limited amount of scientific papers written on the dynamics and performance of gutter brushes.
In this paper the novel concept of oscillatory gutter brushes of road sweepers is studied experimentally.
The debris types dealt with are medium size gravel small and fine particles wet thin debris and compacted debris.
Computer modeling in engineering sciences cmes vol 121 no 1 pp 23 47 2019.
The brush angle of attack β relative to the horizontal plane can be 0 5 10 and 15.
The docapole hard bristle brush kit with 30 ft.
Consequently only 10 and 15 are practical.
It includes a 7 ft.
The 5 to 12 foot docapole extension pole with premium hard bristle brush for cleaning house siding brick walls concrete tires garage floors chimneys aluminum siding composite siding wood siding decks patios retaining walls and so much more.
Moving on to the 20 foot high gutters i was pleased to find the pole extended easily to it s full length and that i was just able to reach the gutter.
At this length it is difficult to control the angle of attack of the spray head but this is more the result of simple physics than of any defect in the product.
Their effectiveness in removing different debris types is studied by means of a brushing test rig.
However the angles 0 and 5 provide an equivalent β of negative value because the slope of the gutter is 6 5 and due to the value of ξ used.
Therefore only the last two angles of attack are practical.
Extension pole and a stiff synthetic bristle brush optimized.
In fact it seems that.
Extension pole is the perfect long reach cleaning brush solution.
The combustion setup used was premixed propane air combustion with an equivalence ratio of 0 6.