給水設備の吐水口空間(air gap)について(第2報)

概要

論文の詳細を見る
In the continuous experiments from the previous year, tests were conducted on the following four points to make clearer what had been experimented before. Herein is the report on what was accomplished. 1) In the case of a large outlet diameter (nominal 15-30 mm) 2) Effect by the thickness of tube 3) In the case of a near wall to the outlet 4) In the case of oil or soap water foams in place of public water, it has been observed as the result of the experiments that the larger the diameter becomes, the smaller the magnification ((air gap)/(inner diameter of effective opening)) becomes with a constant proportion. It has been proved in the recent testings that the double value of the effective opening in accordance with the Plumbing Code of the U. S. A. is sufficiently safe. However, in the case of soap water, the same value was found out inappropriate.
明治大学の論文