h_vap: heat of vaporization (J / mol)
h_vap: heat of vaporization (J / mol)
.get_hvap(T_leaf, unitless)
T_leaf |
Leaf temperature in Kelvin |
unitless |
Logical. Should function use parameters with |
Heat of vaporization: The heat of vaporization (h_vap) is a function of temperature. I used data from on temperature and h_vap from Nobel (2009, Appendix 1) to estimate a linear regression. See Examples.
Value in J/mol of class units
Nobel PS. 2009. Physicochemical and Environmental Plant Physiology. 4th Edition. Academic Press.
# Heat of vaporization and temperature
## data from Nobel (2009)
T_K <- 273.15 + c(0, 10, 20, 25, 30, 40, 50, 60)
h_vap <- 1e3 * c(45.06, 44.63, 44.21, 44.00,
43.78, 43.35, 42.91, 42.47) # (in J / mol)
fit <- lm(h_vap ~ T_K)
## coefficients are 56847.68250 J / mol and 43.12514 J / (mol K)
coef(fit)
T_leaf <- 298.15
h_vap <- set_units(56847.68250, J / mol) -
set_units(43.12514, J / mol / K) * set_units(T_leaf, K)
## h_vap at 298.15 K is 43989.92 [J/mol]
set_units(h_vap, J / mol)
tealeaves:::.get_hvap(set_units(298.15, K), FALSE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.