Wednesday, September 16, 2009

BIOSWEEP 900 Gas Output Formulas

We are frequently asked about the output values of Hydrogen Peroxide (H202) and Ozone (03) vapors from our BIOSWEEP product as a mass value. Until now, we have stated only our constant continuous output in parts-per-million (PPM), according to calibrated gas monitors and sensors readings from ATI (their PortaSens C-16). But repeated technical requests for us to estimate these values, in milligrams per hour, have led us to work to publish the following formulas. This will now allow service operators and others to state mass output by inserting their on site output readings in PPM into the following formulas.

MASS EXPORT CALCULATION AND ASSUMPTIONS
Fan Speed 240 cfm X 60 min/hr = 14,400 cubic feet/hour (cfh)
Assumption: 1 cu meter = 0.0283 cu ft
Calculation: 14,400 cfh x (0.0283 cu ft/m) = 407.52 cu meters/hr
Assumption: Air Mass Density= 1.2041 kg /cu meter (20 deg C at 101.325 kPa)
Calculation: 407.52 cu meter/hr x (1.2041 kg/cu meter)= 490.69kg/hr or 490690000 mg/hr

Hydrogen Peroxide (H2O2)

Historical Output Range: 25 -33 ppm

Mass of H202 at 25ppm continuous output

Lowest Assumption: 25 ppm~ 0.0025% of air volume
(vapor density of H202 is unknown per MSDS, but assume = air)

Calculation:
49069000 mg/hr X .000025 = 12,267.25 mg/hr H2O2

Mass of H202 at 33ppm continuous output

Highest Assumption: 33 ppm~ 0.0033% of air volume
(vapor density of H202 is unknown per MSDS, but assume = air)

Calculation:
49069000 mg/hr X .000033 = 16,192.77 mg/hr H2O2

Ozone (O3)

Historical Output: 38 to 53 ppm

Mass of 03 at 38PPM

Lowest Assumption: 38 ppm~ 0.0035% of air volume
(vapor density of 03 is 1.7 that of air)

Calculation:
490690000 mg/hr X .000038 = 18,646.22 mg/hr X 1.7 = 31,698.57 mg/hr O3

Mass of 03 at 53PPM

Highest Assumption: 50 ppm~ 0.0050% of air volume
(vapor density of 03 is 1.7 that of air)

Calculation:
490690000 mg/hr X .000050 = 24,534.5 mg/hr X 1.7 = 41,708.65 mg/hr O3