Ventilation Standards And Ventilation Methods
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The unpleasant effects are partly due to heat and moisture and partly to odors which are usually not of a respiratory origin. Carbon dioxide present in the air of even badly ventilated rooms is present in far too small proportions to have any sensible effect. Appar- ently the unpleasant sensations are principally due to high percentage of moisture and high temperature, the effect of both of which on the action of the heart is injurious.
Various experiments have been made on human subjects enclo...sed in hermetically sealed boxes provided with windows, which experiments have tended to check or verify the conclu- sions drawn from the physiological investigations to which I have already referred. Briefly, these experiments have indicated that the human subjects suffered very little or none at all by deduction in the amount of oxygen supplied to from 21 to 16 per cent, and an increase in the carbon dioxide content to nearly 5 per cent., provided the air in the enclosure in which the body is situated is kept in motion, the temperature maintained at less than 74 degrees and the percentage of humidity kept from reaching an excessive amount.
What to read after Ventilation Standards And Ventilation Methods?
You can find similar books in the "Read Also" column, or choose other free books by Carpenter, R. C to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The unpleasant effects are partly due to heat and moisture and partly to odors which are usually not of a respiratory origin. Carbon dioxide present in the air of even badly ventilated rooms is present in far too small proportions to have any sensible effect. Appar- ently the unpleasant sensations are principally due to high percentage of moisture and high temperature, the effect of both of which on the action of the heart is injurious.
Various experiments have been made on human subjects enclo...sed in hermetically sealed boxes provided with windows, which experiments have tended to check or verify the conclu- sions drawn from the physiological investigations to which I have already referred. Briefly, these experiments have indicated that the human subjects suffered very little or none at all by deduction in the amount of oxygen supplied to from 21 to 16 per cent, and an increase in the carbon dioxide content to nearly 5 per cent., provided the air in the enclosure in which the body is situated is kept in motion, the temperature maintained at less than 74 degrees and the percentage of humidity kept from reaching an excessive amount.
What to read after Ventilation Standards And Ventilation Methods?
You can find similar books in the "Read Also" column, or choose other free books by Carpenter, R. C to read onlineMoreLess
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