Comments (2)
For example, at 35C for headspace and measurement, with 3 atm in headspace, error is around 1%:
> stdVol(1, temp = 35, pres = 3, rh = 1)
Using a standard pressure of 1 atm and standard temperature of 0 C for standardizing volume.
[1] 2.609401
Warning message:
In stdVol(1, temp = 35, pres = 3, rh = 1) :
pres ranges from 3 atm to 3 atm. Is this really correct?
> stdVol(1, temp = 35, pres = 3, rh = 1/3)
Using a standard pressure of 1 atm and standard temperature of 0 C for standardizing volume.
[1] 2.642638
Warning message:
In stdVol(1, temp = 35, pres = 3, rh = 1/3) :
pres ranges from 3 atm to 3 atm. Is this really correct?
> 1 - 261/264
[1] 0.01136364
from biogas.
For 3 atm and measurement at 20C, it is around 0.4%.
> stdVol(1, temp = 35, pres = 3, rh = 0, temp.std = 20, pres.std = 1)
Using a standard pressure of 1 atm and standard temperature of 20 C for standardizing volume.
[1] 2.853967
> biogas:::watVap(temp = 20 + 273.15)
[1] 2333.441
> biogas:::watVap(temp = 35 + 273.15)/2.85
[1] 1971.077
> stdVol(1, temp = 20, pres = 1, rh = 1)
Using a standard pressure of 1 atm and standard temperature of 0 C for standardizing volume.
[1] 0.9102041
> stdVol(1, temp = 20, pres = 1, rh = 1971/2333)
Using a standard pressure of 1 atm and standard temperature of 0 C for standardizing volume.
[1] 0.9135512
> 1 - 910/914
[1] 0.004376368
from biogas.
Related Issues (20)
- summBg() show.when problems
- Missing columns feedSetup
- Air density function
- calcBgGD comp.sub check
- Mass gain error in calcBgGD()
- calcBgGD with headspace correction
- summBg() when = 'end' with unequal test duration HOT 1
- Check calcBgGD() arguments
- calcBgVol() problem with fixed xCH4/comp
- Update vignette HOT 1
- Bug in summBg() when show.rates=T and inoc.name not specified HOT 5
- Package check problems
- New release
- Add VDI empirical chemical formulas
- Document and test convertBPC
- Checking for data frame arguments, extend to data.tables
- calcCOD result for 1 mol
- calcBgGD uses hard-wired `xCH4`
- Handling mass gain in calcBgGD
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