A Study of Recent Factors Affecting Heating and Ventilation (Electronic book text)

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. Excerpt from book: Section 3Too much stress must not be placed on the close agreement shown in-the experiment because it is assumed that the bodily activity of the subject was the same in both cases. If on the second day there had been a greater bodily activity than en the first there would have been a greater carbon dioxide and heat output and vice versa. So far as it was possible to judre there was no material difference in the muscular activity en the two days in spite of the fact that is might reasonably be inferred that the wearing of a mask and tube on the first day would tend to restrict muscular activity to some extent. It is certain that no differences in the respiratory exchange and heat output are to be noted which at all correspond to the enormous difference in carbon dioxide content. It is also to be noted that in the case above noted no abnormal results appeared which could in any way be attributed to the increased percentage of carbon dioxide in the chamber. In connection with the humidity in the chamber during the foregoing experiments it may be stated that when the tube and mask were worn the relative humidity was much lower than in any other experiment as was to be expected. The lowest proportion was 2.56$ carbon dioxide at the end of the 24 hours. Contrary to what might possibly be expected the relative humidity on the next day when the mask and tub were not worn and when the ventilation was so markedly cut down was not abnormally high, the increase in the amount of wter being in no degree comparable to the increase in the amount of carbon dioxide. General Conclusions regarding Ventilation. As a result of the Wesleyan University tests . As a result of the evidence obtained at Wesleyan Un iversity test Prof. Benedict and Prof. Milner made the following deductions (1) That an increase in the a...