Clean up time in clean room (Not uni-direction flow type)

31/01/2021, 04/10/2024

Hideki Miki, Ph.D. (Engineering), JICA Expert

Calculation

Note1: Error handling is minimal.

Note2: Tested with Chrome and Internet Explorer. (blocks must be removed.)

Fomula

t=log10(C0/C)/akn

C	:	Particle concentration (t hours later)	[pcs/m3]
C0	:	Particle concentration (initial)	[pcs/m3]
a	:	Correction value (from 0 to 1, around 0.6 (normal)	[-]
k	:	Constant(＝log10e≒0.4343)	[-]
n	:	Air changing rate	[times/hour]
t	:	Time since operation started	[hour]