leak_calc
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Transcript of leak_calc
Diameter of Round Hole (In Inches) 2.00
Gauge Pressure (psig) 75.0
Number of Minutes Released 1.0
Liquid Flow Rate (lb/min) 5802.86
Total Liquid Relased (lb) 5803
Area of Leak (In Square Inches) 3.14
Gauge Pressure (psig) 75.0
Number of Minutes Released 1.0
Liquid Flow Rate (lb/min) 5802.43
Total Liquid Relased (lb) 5802
Radius
Diameter of Round Hole (In Inches) 2.00 1
Gauge Pressure (psig) 75.0
Number of Minutes Released 1.0
Gas Flow Rate (lb/min) 246.19 246.1867
Total Vapor Relased (lb) 246 246.1867
Area of Leak (In Square Inches) 3.14
Gauge Pressure (psig) 75.0
Number of Minutes Released 1.0
Refrigerant Gas Temperature (Degrees Fahrenheit) 50.00
Gas Flow Rate (lb/min) 246.19 246.1898
Total Vapor Relased (lb) 246 246.1898
Formulas for above calculations are adapted from the September 1993 second edition
of the Chemical Exposure Index Guide published by the Dow Chemical Company.
Formula for Liquid Release, Round Opening: L=26.81(D squared) * Square Root of Pg*Pl
Formula for Liquid Release, Irregular Opening: L=34.133A * Square Root of Pg*Pl
Where: L=Liquid Flow Rate Lb./min.
D=Diameter round hole, inches
Pg=Gauge pressure, psig
Pl= Density of liquid at operating temperature, Lb./cu. Ft.
Length x Height x Width x PPM/1,000,000 x vapor
density @ specific temp = total NH3 in lbs
Length x Height x Width = volume in feet3
Gas Release--Round Opening
Gas Release--Irregular Opening
Parts per million of NH3
Liquid Release--Irregular OpeningTotal room volume in ft3
Vapor density
Total NH3 in lbs
Liquid Release--Round Opening Room Level--PPM to lbs
Length of room (in feet)
Height of room (in feet)
Width of room (in feet)
Room temperature (F)
A=Area of leak, square inches
Formula for Gas Release, Round Opening: AQ=(15.48*(D Squared)*Pa)/Square Root (Tr+459)
Formula for Gas Release, Irregular Opening: AQ=(19.71*A*Pa)/Square Root (Tr+459)
Where: AQ=Gas Flow Rate, Lb./min.
D=Diameter of round hole, inches
Pa=Gauge pressure plus 14.7, psi
Tr=Refrigerant gas temperature, °F
A=Area of leak, square inches
0
0
0
0
0
0
0.1094
0
R^2 Area
1 3.141593
Formula for Gas Release, Round Opening:AQ=(15.48*(D Squared)*Pa)/Square Root (Tr+459)
Formula for Gas Release, Irregular Opening:AQ=(19.71*A*Pa)/Square Root (Tr+459)
Where: AQ=Gas Flow Rate, Lb./min.
D=Diameter of round hole, inches
Pa=Gauge pressure plus 14.7, psi
Tr=Refrigerant gas temperature, °F
A=Area of leak, square inches
=
Length x Height x Width x PPM/1,000,000 x vapor
density @ specific temp = total NH3 in lbs
Length x Height x Width = volume in feet3
Parts per million of NH3
Total room volume in ft3
Vapor density
Total NH3 in lbs
Room Level--PPM to lbs
Length of room (in feet)
Height of room (in feet)
Width of room (in feet)
Room temperature (F)
