emis_cold: Estimation of cold start emissions hourly for the of the week

In vein: Vehicular Emissions Inventories

Estimation of cold start emissions hourly for the of the week

Description

emis_cold emissions are estimated as the product of the vehicles on a road, length of the road, emission factor evaluated at the respective speed. The estimation considers the beta parameter, the fraction of mileage driven

Usage

emis_cold(
  veh,
  lkm,
  ef,
  efcold,
  beta,
  speed = 34,
  agemax = if (!inherits(x = veh, what = "list")) {
     ncol(veh)
 } else {
    
    ncol(veh[[1]])
 },
  profile,
  simplify = FALSE,
  hour = nrow(profile),
  day = ncol(profile),
  array = TRUE,
  verbose = FALSE
)

Arguments

veh	"Vehicles" data-frame or list of "Vehicles" data-frame. Each data-frame as number of columns matching the age distribution of that type of vehicle. The number of rows is equal to the number of streets link
lkm	Length of each link
ef	List of functions of emission factors of vehicular categories
efcold	List of functions of cold start emission factors of vehicular categories
beta	Dataframe with the hourly cold-start distribution to each day of the period. Number of rows are hours and columns are days
speed	Speed data-frame with number of columns as hours
agemax	Age of oldest vehicles for that category
profile	Numerical or dataframe with nrows equal to 24 and ncol 7 day of the week
simplify	Logical; to determine if EmissionsArray should les dimensions, being streets, vehicle categories and hours or default (streets, vehicle categories, hours and days). Default is FALSE to avoid break old code, but the recommendation is that new estimations use this parameter as TRUE
hour	Number of considered hours in estimation
day	Number of considered days in estimation
array	Deprecated! emis_cold returns only arrays. When TRUE and veh is not a list, expects a profile as a dataframe producing an array with dimensions (streets x columns x hours x days)
verbose	Logical; To show more information

Value

EmissionsArray g/h

Examples

## Not run: 
# Do not run
data(net)
data(pc_profile)
data(fe2015)
data(fkm)
data(pc_cold)
pcf <- as.data.frame(cbind(pc_cold,pc_cold,pc_cold,pc_cold,pc_cold,pc_cold,
pc_cold))
PC_G <- c(33491,22340,24818,31808,46458,28574,24856,28972,37818,49050,87923,
          133833,138441,142682,171029,151048,115228,98664,126444,101027,
          84771,55864,36306,21079,20138,17439, 7854,2215,656,1262,476,512,
          1181, 4991, 3711, 5653, 7039, 5839, 4257,3824, 3068)
veh <- data.frame(PC_G = PC_G)
pc1 <- my_age(x = net$ldv, y = PC_G, name = "PC")
pcw <- temp_fact(net$ldv+net$hdv, pc_profile)
speed <- netspeed(pcw, net$ps, net$ffs, net$capacity, net$lkm, alpha = 1)
pckm <- units::set_units(fkm[[1]](1:24), "km"); pckma <- cumsum(pckm)
cod1 <- emis_det(po = "CO", cc = 1000, eu = "III", km = pckma[1:11])
cod2 <- emis_det(po = "CO", cc = 1000, eu = "I", km = pckma[12:24])
#vehicles newer than pre-euro
co1 <- fe2015[fe2015$Pollutant=="CO", ] #24 obs!!!
cod <- c(co1$PC_G[1:24]*c(cod1,cod2),co1$PC_G[25:nrow(co1)])
lef <- ef_ldv_scaled(co1, cod, v = "PC", cc = "<=1400",
                     f = "G",p = "CO", eu=co1$Euro_LDV)
# Mohtly average temperature 18 Celcius degrees
lefec <- ef_ldv_cold_list(df = co1, ta = 18, cc = "<=1400", f = "G",
                          eu = co1$Euro_LDV, p = "CO" )
lefec <- c(lefec,lefec[length(lefec)], lefec[length(lefec)],
           lefec[length(lefec)], lefec[length(lefec)],
           lefec[length(lefec)])
length(lefec) == ncol(pc1)
#emis change length of 'ef' to match ncol of 'veh'
class(lefec)
PC_CO_COLD <- emis_cold(veh = pc1,
                        lkm = net$lkm,
                        ef = lef,
                        efcold = lefec,
                        beta = pcf,
                        speed = speed,
                        profile = pc_profile)
class(PC_CO_COLD)
plot(PC_CO_COLD)
lpc <- list(pc1, pc1)
PC_CO_COLDv2 <- emis_cold(veh = pc1,
                          lkm = net$lkm,
                          ef = lef,
                          efcold = lefec,
                          beta = pcf,
                          speed = speed,
                          profile = pc_profile,
                          hour = 2,
                          day = 1)

## End(Not run)

vein documentation built on May 29, 2024, 7:20 a.m.