calcEF.Rd
Creates a data table of emission factors (g/kWh) for the given parameters.
calcEF( engineType, tier, location, loadFactor = NULL, ECAfuelSulfurPercentage = 0.1, GlobalfuelSulfurPercentage = 0.5, pollutants = "ALL", loadBasedBSFC = "N", output = "EF_LLAF", main_aux_boiler = "main", inputTableLocation = NULL )
engineType | Engine type (vector of strings) (see
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tier | NOx engine tier (vector of strings) (see
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location | Location of vessel (vector of strings). Valid values are:
|
loadFactor | Fractional percentage (between 0 and 1) of main engine
required to propel vessel at given speed (vector of numericals) (see
ShipPowerModel library). This parameter is necessary when |
ECAfuelSulfurPercentage | Fuel sulfur cap (percentage by weight) for the Emissions Control Area (ECA). Default = 0.1% (in effect Jan. 1, 2015) |
GlobalfuelSulfurPercentage | Fuel sulfur cap (percentage by weight) for outside the Emissions Control Area (ECA). Default = 0.5% (in effect Jan. 1, 2020) |
pollutants | Select pollutants (default = "ALL"). Options:
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loadBasedBSFC | Determines if baseline BSFC values should be altered
according to main engine load (see
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output | What output table should be produced? Options:
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main_aux_boiler | Is this calculation for a propulsive (main), auxiliary (aux), or boiler engine? Options:
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inputTableLocation | File path (optional). Used to specify a user-supplied set of low load adjustment factors. See details for formatting requirements |
a data.table of emission factors or low load adjusted emission factors
(depending on the output
argument) for the given parameters. Each
pollutant selected in the pollutants
argument will be a column in the
table.
Location is important for determining the fuel being used, as type of fuel typically used varies by location.
For more information about marine emission factors, see Section 3.5 of the Port Emissions Inventory Guidance.
If user-supplied djustment factors are used, the file should be
in .csv format with a header row. The headers should be "load" and one or more
pollutants listed in the pollutants
argument. The load column should
contain numerical values in percentage space (i.e., it can range between 0 and
100). The pollutant columns should contain the specific adjustment factors for
that pollutant, corresponding to the load values. Note: The function will
linearly interpolate between the nearest values for any given load factor, and
will return an adjustment factor of 1 for load factors outside the range of
the table (i.e., it will not extrapolate).
Note: If it is desired that baseline BSFC values should be altered according
to main engine load only within a specified set of bounds, and the baseline
value should be used outside of those bounds, pass the bounds as a string
using the loadBasedBSFC
argument. The bounds should be formatted as
such: the lower bound first, then a comma, then the upper bound.
calcEF(engineType=c("SSD","MSD","MSD-ED","GT"), location=c("ECA","OutsideECA","GreatLakes","ECA"), loadFactor=c(0.8,0.5,0.14,0.03), loadBasedBSFC="0.2,1", output="EF_LLAF", pollutants="co2", tier=c("Tier 3","Tier 2","Tier 1", "Tier 0"))#> co2 #> 1: 595.0080 #> 2: 695.4535 #> 3: 657.2300 #> 4: 2344.5742calcEF(engineType=c("SSD","MSD","MSD-ED","GT"), location=c("ECA","OutsideECA","GreatLakes","ECA"), loadFactor=c(0.8,0.5,0.14,0.03), loadBasedBSFC="Y", output="EF_LLAF", main_aux_boiler="main", tier=c("Tier 3","Tier 2","Tier 1", "Tier 0"))#> hc co2 co nox pm2.5 so2 pm10 #> 1: 0.600000 595.0080 1.400000 3.4000 0.16899642 0.3628435 0.18369177 #> 2: 0.500000 695.4535 1.100000 11.2000 0.69159975 2.1831300 0.75173886 #> 3: 0.500000 781.7869 1.100000 12.2000 0.17742693 0.4767437 0.19285535 #> 4: 1.168433 2952.0757 1.292945 16.6402 0.03984598 1.8156153 0.04331085calcEF(engineType=c("SSD","SSD"), location=c("ECA","ECA"), loadFactor=c(0.8,0.03), output="EF", main_aux_boiler="main", tier=c("Tier 3","Tier 2"))#> hc co2 co nox pm2.5 so2 pm10 #> 1: 0.6 593.11 1.4 3.4 0.1689108 0.3616861 0.1835987 #> 2: 0.6 593.11 1.4 14.4 0.1689108 0.3616861 0.1835987calcEF(engineType=c("SSD","SSD"), location=c("ECA","ECA"), output="EF", main_aux_boiler="main", tier=c("Tier 3","Tier 2"))#> hc co2 co nox pm2.5 so2 pm10 #> 1: 0.6 593.11 1.4 3.4 0.1689108 0.3616861 0.1835987 #> 2: 0.6 593.11 1.4 14.4 0.1689108 0.3616861 0.1835987calcEF(engineType=c("HSD","MSD","LNG"), location=c("ECA","OutsideECA","ECA"), loadFactor=c(0.8,0.5,0.14), ECAfuelSulfurPercentage=0.1, GlobalfuelSulfurPercentage=2.7, pollutants="ALL", output="EF", main_aux_boiler="aux", tier=c("Tier 3","Tier 2", "Tier 0"))#> hc co2 co nox pm2.5 so2 pm10 #> 1: 0.4 695.702 0.9 2.6 0.1735414 0.424248 0.1886319 #> 2: 0.4 706.878 1.1 11.2 1.4169200 11.982563 1.5401304 #> 3: 0.0 456.500 1.3 1.3 0.0276000 0.033200 0.0300000calcEF(engineType=c("MSD","SSD"), location=c("ECA","OutsideECA"), loadFactor=c(0.8,0.5), ECAfuelSulfurPercentage=0.1, GlobalfuelSulfurPercentage=2.7, pollutants="ALL", output="EF", main_aux_boiler="boiler", tier=c("Tier 0", "Tier 0"))#> hc co2 co nox pm2.5 so2 pm10 #> 1: 0.1 961.80 0.2 2.0 0.185552 0.586518 0.201687 #> 2: 0.1 949.77 0.2 2.1 1.721672 16.099919 1.871383