ef_whe: Emission factor that incorporates the effect of high emitters

In vein: Vehicular Emissions Inventories

Emission factor that incorporates the effect of high emitters

Description

ef_whe return weighted emission factors of vehicles considering that one part of the fleet has a normal deterioration and another has a deteriorated fleet that would be rejected in a inspection and mantainence program but it is still in circulation. This emission factor might be applicable in cities without a inspection and mantainence program and with Weighted emission factors considering that part of the fleet are high emitters.

Usage

ef_whe(efhe, phe, ef)

Arguments

efhe	Numeric; Emission factors of high emitters vehicles. This vehicles would be rejected in a inspection and mantainnence program.
phe	Numeric; Percentage of high emitters.
ef	Numeric; Emission factors deteriorated vehicles under normal conditions. These vehicles would be approved in a inspection and mantainence program.

Value

An emission factor by annual mileage.

Examples

{
# Do not run
# Let's say high emitter is 5 times the normal ef.
co_efhe <- ef_cetesb(p = "COd", "PC_G") * 5
# Let's say that the perfil of high emitters increases linearly
# till 30 years and after that percentage is constant
perc <- c(seq(0.01, 0.3, 0.01), rep(0.3, 10))
# Now, lets use our ef with normal deterioration
co_ef_normal <- ef_cetesb(p = "COd", "PC_G")
efd <- ef_whe(efhe = co_efhe,
              phe = perc,
              ef = co_ef_normal)
# now, we can plot the three ef
colplot(data.frame(co_efhe, co_ef_normal, efd))
}

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