Wisconsin Dairymen's Association / Fortieth annual report of the Wisconsin Dairymen's Association : held at Beloit, Wis., November, 1911. Report of the proceedings, annual address of the president, and interesting essays and discussions relating to the dairy interests
James, W. D.
Building the dairy barn, pp. 64-81 PDF (3.4 MB)
Fortieth Annual Report of the and we have been instructed always to build those ventilators above the roof, so that we are benefited by the current of air. You can enclose that barn absolutely tight and there will be a draft going out of that ventilator. We have a barn similar to that on the state fair grounds at Milwaukee, and I am going to confess something which I never told to but one member of the State Board of Agriculture; there are two of them here who don't know anything about it. I was curious; I happened to be on the ground, as I am many times, alone, and saw that barn was ventilated as this model barn is, and I was curious to know how smoke would act in that barn. So I went into It and I kindled three little fires with damp straw. I wanted to see in what direction that smoke would go, and how long it would take it to disap- pear. I stood watching it a long time, and the smoke gradually went to the ceiling. It finally became affected by the intake current and T saw the movement at the ceiling begin working. It gradually began to penetrate different portions of the basement room and it flially be- gan to work towards the outtake flue the faster it traveled, and it finally went out with the-suction-I call it draft. I hold that smoke was not forced out by the current of intake air. But it very gradually penetrated all parts of the basement and stayed there until It all dis- appeared in the outtake flue. Now, that smoke did not eddy around and immediately travel to these intake flues as Professor Emery suggested, but it was very gradual and very slow in moving over that entire basement until it was taken out by the flue. That was an illus- tration to me and an important one, because it proved what I have always believed, that the King system of ventilation is a very practical system. I was forced to believe it from what I saw. That smoke traveled exactly the same as the air traveled in that barn and that outtake ventilating flue should be built tight so as to ensure a good draft. Of course the air that goes up the chimney is warm from the stove and the warmer that flue is the greater will be the draft. You all know if your chimney doesn't draw, it will smoke. Mr. Everett: I want to read from the gospel of Professor King. I quote from the 27th Annual Report of the Dairymen's Association: "Q: There is one factor in a chimney that makes it a ventilating shaft, that is the fire. "Prof. King: That is true, and the heat from the bodies of the cows in a measure acts in the same way; but you are all familiar with the fact that on a windy day the air currents passing across the top of a chimney tend always to produce a stronger draft, and all good chimneys have a draft through them even when there is no fire, and the same thing would be true of a properly constructed ven- 80.
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