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Ozone Generator CalculationsEvery calculation you need to monitor Ozone with your 2B Tech product.
Ozone Dosage Calculations
These calculations relate the ozone dosage to ozone generator output and water flow rate.
Calculate Ozone Generator Requirement
Find the ozone generator production rate (g/hr) required for achieving your desired ozone dosage into a water flow.
0.227124 x GPM x PPM = g O_{3}/hr
Detail showing all units:
3.7854 L/gal x 60 min/hr x TPM x PPM x 0.001 g O_{3}/L-PPM = g O_{3}/hr
GPM = your water flow rate in gallons/min
PPM = your desired ozone dosage in milligrams of ozone per kilogram of water (1 kg H_{2}O = 1 L H_{2}O)
g/hr = grams ozone per hour
Calculate Ozone Dosage from Generator Output & Water Flow Rate
This reverses the calculation above to find the ozone dosage achieved for a given water flow rate and generator output.
g/hr x 4.40288 / GPM = PPM
Detail showing all units:
(g O_{3}/hr x 1000 mg O_{3}/g O_{3}) / (GPM x 3.7854 L H_{2}O /gal H_{2}O x 60 min/hr x 1 kg H_{2}O/L H_{2}O) = PPM
GPM = your water flow rate in gallons/min
PPM = your desired ozone dosage in milligrams of ozone per kilogram of water (1 kg H_{2}O = 1 L H_{2}O)
Calculate Output of an Ozone Generator
Use these calculations to check the performance of your ozone generator.
From SLPM & wt% O_{3}, for O_{2} Feed Gas
Determine the output of an ozone generator on oxygen feed gas (e.g., to check on the performance of your ozone generator).
Directions: Enter the standard flow rate of oxygen and the concentration of ozone to determine the production of your ozone generator.
Note: This calculation only works with oxygen feed gas.
GPM = your water flow rate in gallons/min
PPM = your desired ozone dosage in milligrams of ozone per kilogram of water (1 kg H_{2}O = 1 L H_{2}O)
From SLPM & wt% O_{3}, for Dry Air Feed Gas
Determine the output of an ozone generator on dry air feed-gas (e.g., to check on the performance of your ozone generator).
Directions: Enter the standard flow rate of the dry air and the concentration of ozone in this dry air to determine the production of your ozone generator.
Note: This calculation only works with dry air feed-gas.
SLPM x wt% air x 0.77598 = g O_{3}/hr
Detail showing all units:
std L/min air x 60 min/hr x 1 mol air/L air x 28.97 g air/mol air x (wt% air / 100) = g O_{3}/hr
Note: SLPM = your standard air flow rate in liters air/min
From LPM & g/m^{3} O_{3}, for any Feed Gas
Determine the output of an ozone generator when you know the flow rate and ozone concentration in grams of ozone per m^{3} of air/oxygen. This calculation is independent of whether the feed-gas being used is dry air or oxygen.
LPM x g/m^{3} O_{3} x 0.06 = g O_{3}/hr
Detail showing all units:
L/min O_{3} x 60 min/hr x g O_{3}/m^{3} feed-gas x 0.001 m^{3}/L = g O_{3}/hr
LPM = the volumentric flow rate of the feed-gas in units of liters per minute;
g O_{3}/m^{3} = the O_{3} concentration in units of g O_{3} per m^{3} of feed-gas
From SCFM & PPM O_{3}, for any Feed Gas
Determine the output of a commercial ozone generator (e.g. Determine the amount of ozone necessary to treat a flue gas stream or for many other industrial emission control applications.).
Flow Rate, SCFM | PPM O_{3} by Volume | O_{3} Output, mg/hr |
Note: If you do not know the feed-gas flow rate, it can be measured with a wind speed meter and corrected for standard conditions. Using the feed-gas flow rate in SCFM and the ozone level in PPM, the output of the ozone generator output in milligrams/hour can be determined.
SCFM x PPM x 3.6407 = mg O_{3}/hr
Detail showing all units:
std ft^{3}/min x 60 min/hr x 1728 in^{3}/ft^{3} x 16.387 cm^{3}/in^{3} x PPM x 10^{-6}/PPM x 1 mol O_{3}/22,400 cm^{3} x 48 g O_{3}/mol O_{3} x 1000 mg O_{3}/g O_{3}
SCFM = feed-gas flow rate in standard cubic feet/min;
PPM = the O_{3} concentration in parts-per-million by volume (cm^{3} O_{3} per 1,000,000 cm^{3} feed-gas)
Ozone Production Rates
Units Conversions
Convert your ozone generator output rate or your flow rate into different units.
Ozone Generator Output Rate Conversions
Type a value in any of the fields to convert the ozone generator output rate into other units:
lb/day | |
g/hr | |
mg/hr | |
kg/hr |
Flow Rate Conversions
Type a value in any of the fields to convert flow rates into other units:
CFH | |
CFM | |
LPM | |
GPM | |
m^{3}/hr |
Pressure Related Calculations
Pressure Correction for a Rotameter
Enter the pressure in PSIG (gauge pressure) and your measured flow rate in any units. The calculator gives the corrected flow rate in the same units.
Measured Flow x [(PSIG + 14.7)/14.7]1/2 = Corrected Flow
Measured Flow x (PSIA/14.7)1/2 = Corrected Flow
PSIG = PSIA – 14.7
PSIA = pounds per square inch absolute
PSIG = pounds per square inch gauge
Pressure Unit Conversions
Type a value in any of the fields to convert pressures into other units:
PSIA | |
PSIG | |
atmosphere | |
bar | |
kilopascal | |
foot head (of water at 4 ^{o}C) | |
torr (mm Hg) |
Ozone Calculations
Relevant Physical Properties
Density of ozone = 2.14 kg/m^{3}
Molecular weight of ozone = 48
Density of oxygen = 1.43 kg/m^{3}
Molecular weight of oxygen = 32
Density of air = 1.29 kg/m^{3}
Average molecular weight of dry air = 28.97
Density of water = 1,000 kg/m^{3} = 1 g/cm^{3} = 1 kg/L
Volume of 1 mole of gas at STP = 22.4 liters
Standard temperature and pressure (STP) = 0^{o}C and 1 atmosphere
Note: A newer definition of STP conditions (not yet adopted by all organizations) is 0^{o}C and 1 bar where 1 bar = 0.986923 atm