Qemitted_thermal_radiation: Emitted Thermal Radiation

In TrenchR: Tools for Microclimate and Biophysical Ecology

Emitted Thermal Radiation

Description

The function estimates the net thermal radiation (W) emitted by the surface of an animal \insertCiteGates1980,Spotila1992TrenchR.

Usage

Qemitted_thermal_radiation(
  epsilon = 0.96,
  A,
  psa_dir,
  psa_ref,
  T_b,
  T_g,
  T_sky = NA,
  T_a,
  enclosed = FALSE
)

Arguments

epsilon	numeric longwave infrared emissivity of skin (proportion), 0.95 to 1 for most animals \insertCiteGates1980TrenchR.
A	numeric surface area ((m2).
psa_dir	numeric view factor indicating the proportion of surface area exposed to sky (or enclosure) (0-1)
psa_ref	numeric view factor indicating the proportion surface area exposed to ground (0-1).
T_b	numeric body surface temperature (K).
T_g	numeric ground surface temperature (K).
T_sky	numeric Estimate effective radiant temperature of sky (K)
T_a	numeric ambient air temperature (K), only required if the animal is in an enclosed environment.
enclosed	logical whether the animal is an enclosed environment or not.

Value

numeric emitted thermal radiation, Qemit (W).

References

\insertAllCited

See Also

Other biophysical models: Grashof_number_Gates(), Grashof_number(), Nusselt_from_Grashof(), Nusselt_from_Reynolds(), Nusselt_number(), Prandtl_number(), Qconduction_animal(), Qconduction_substrate(), Qconvection(), Qevaporation(), Qmetabolism_from_mass_temp(), Qmetabolism_from_mass(), Qnet_Gates(), Qradiation_absorbed(), Qthermal_radiation_absorbed(), Reynolds_number(), T_sky(), Tb_CampbellNorman(), Tb_Gates2(), Tb_Gates(), Tb_butterfly(), Tb_grasshopper(), Tb_limpetBH(), Tb_limpet(), Tb_lizard_Fei(), Tb_lizard(), Tb_mussel(), Tb_salamander_humid(), Tb_snail(), Tbed_mussel(), Tsoil(), actual_vapor_pressure(), boundary_layer_resistance(), external_resistance_to_water_vapor_transfer(), free_or_forced_convection(), heat_transfer_coefficient_approximation(), heat_transfer_coefficient_simple(), heat_transfer_coefficient(), saturation_vapor_pressure(), saturation_water_vapor_pressure()

Examples

  Qemitted_thermal_radiation(epsilon  = 0.96,
                             A        = 1,
                             psa_dir  = 0.4,
                             psa_ref  = 0.5,
                             T_b      = 303,
                             T_g      = 293,
                             T_a      = 298,
                             enclosed = FALSE)

TrenchR documentation built on Sept. 14, 2023, 1:07 a.m.