saddle excel calculation as per lp zick analysisFull description
Full description
SKID CALCFull description
Esquema de prácticas a realizar con CALC (openoffice)Descripción completa
planilha calculo lajesDescrição completa
OpenOffice CalcDescripción completa
math problems using calculator
CALCULATION OF NITROGEN / IG REQUIREMENT FOR PURGING CARGO TANKS
O2 % Present
O2 % in tanks
Required O2 % in tanks
Natural Log
21
3.0445224
0.2
-1.609438
Difference of Log
4.6539604
Total Volume of all Tanks =
3735
Nitrogen / IG requirement = Rate of purging =
Present
17382.542 m3 300
Purging time =
57.9
gas Concentration
Required gas concentration
m3
m3/hr hrs
Gas %
Natural Log
100
4.6051702
0.5
-0.693147
Difference of Log
5.2983174
Total Volume of all Tanks =
3750
Nitrogen / IG requirement =
m3
19868.69 m3
Rate of purging =
750
Purging time =
26.5
m3/hr hrs
Calculate the amount of nitrogen required to purge cargo tanks presently under fresh air (O2 = 21% , dewpoint = -2C) with nitrogen to an O2 content of of 0.2% and a dew point of -50C. Moisture content of air with dewpoint -2C
=
3900
mg / m3
Moisture content of air with dewpoint -50C
=
29.5
mg / m3
Natural log of
3900
=
8.2687318
Natural log of
29.5
=
3.3843903
=
4.8843416
Difference of Log Natural log of
21
=
3.0445224
Natural log of
0.2
=
-1.609438
=
4.6539604
Difference of Log Total Volume of all Tanks = Nitrogen / IG requirement =
