室内汚染空気の換気について(II) : 不均一な室内汚染空気の換気に関する理論式の考察(その1)

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The present investigation was undertaken to apply a theoretical method to the ventilation of polluted air in rooms where carbon dioxide in rooms was not completely diffused : theoretical equation is C^^-=(C_1+b/v)/R+{C_0-(C_1+b/v)/R} e^<vt/M> where M is the net capacity (L) of room, v is the ventilation volume (L/min.), t is time (min.), b is the volume (ml) of carbon dioxide produced per minute, R is the constant (R〓1), and C_1,C^^-, C, C_0 are carbon dioxide concentrations, that is, the outdoor concentration (ml/L), the mean indoor concentration (ml/L), the concentration (ml/L) near by the ventilating opening, the mean indoor concentration (ml/L) at t=0,respectively. In case of R=1,carbon dioxide diffuses homogeneously in rooms. Following equation is obtained from above equation : C^^-=(C_1+b/v)/R when C^^- is the mean concentration of carbon dioxide and t is infinity. The values of R calculated from above equation in "A"-room (net capacity 19.66m^3) and "B"-room (net capacity 688.94 m^3) are 0.43 and 0.51,respectively, and almost agree with experimental values. But some slight lag between these two values was observed and considered to be attributed to the assumption that R was constant. In fact, R is a function of concentration of carbon dioxide, time or ventilation volume, etc.. It will be noted that, in case of b=0,the rate of increase of R in the smaller room ("A") was greater than in the larger one ("B").
公益社団法人日本薬学会の論文
1965-09-30

室内汚染空気の換気について(II) : 不均一な室内汚染空気の換気に関する理論式の考察(その1)

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