calc2Node
calculates ET, SET, TSENS, DISC, PD, PS and PTS based on the 2-Node-Model by Gagge et al.
calc2Node(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5, varOut = "else")
calcET(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcSET(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcTSens(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcDisc(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcPD(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcPS(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcPTS(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcPMVGagge(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcPMVStar(ta, tr, vel, rh, clo = 0.5, met = 1, wme = 0, pb = 760, ltime = 60, ht = 171,
wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = 0.5)
calcSkinWettedness(ta, tr, vel, rh, clo = .5, met = 1, wme = 0, pb = 760, ltime = 60,
ht = 171, wt = 70, tu = 40, obj = "set", csw = 170, cdil = 120, cstr = .5,
varOut="skinWet")
a numeric value presenting air temperature in [degree C]
a numeric value presenting mean radiant temperature in [degree C]
a numeric value presenting air velocity in [m/s]
a numeric value presenting relative humidity [%]
a numeric value presenting clothing insulation level in [clo]
a numeric value presenting metabolic rate in [met]
a numeric value presenting external work in [met]
a numeric value presenting barometric pressure in [torr] or [mmHg]
a numeric value presenting exposure time in [minutes]
a numeric value presenting body height in [cm]
a numeric value presenting body weight in [kg]
a numeric value presenting turbulence intensity in [%]
a character element, either "set" or "pmvadj".
a numeric value presenting the driving coefficient for regulatory sweating
a numeric value presenting the driving coefficient for vasodilation
a numeric value presenting the driving coefficient for vasoconstriction
a string value either "else" for normal output of SET or "skinWet" to report value of skin wettedness.
calc2Node
returns a data.frame with the following items:
Effective temperature
standard effective temperature
Predicted thermal sensation
Predicted discomfort
Predicted percentage satisfied with the level of air movement
Predicted percentage dissatisfied due to draft
Predicted thermal sensation vote based on set
Gagge's version of Fanger's PMV
Same as Fanger's PMV except that dry is calculated using SET* rather than the operative temperature
All variables must have the same length 1. For the calculation of several values use function calcComfInd
.
The value of obj
defines whether the function will use the version presented in ASHRAE 55-2013 for adjustment of pmv (obj = "pmvadj"), or the original code by Gagge to calculate set (obj = "set"). In the version presented in ASHRAE 55-2013, the lines of code related to self-generated convection is deleted. Therefore, a difference can only be seen at higher values of met.
ASHRAE Standard 55-2013. Thermal environmental conditions for human occupancy. American society of heating, Refrigerating and Air-Conditioning Engineering, Atlanta, USA, 2013.
Fountain, M. & Huizenga, C. A thermal sensation model for use by the engineering profession ASHRAE RP-781 Final report, 1995
Gagge, A. P., Fobelets, A. P. and Berglund, L. G. A standard predictive index of human response to the thermal environment, ASHRAE transactions, 1986, 92 (2B), 709-731.
see also calcComfInd
, calcPtsadj
# NOT RUN {
## Calculation of a single set of values.
calc2Node(22, 25, .50, 50)
## Using several rows of data:
ta <- c(20,22,24)
tr <- ta
vel <- rep(.15,3)
rh <- rep(50,3)
maxLength <- max(sapply(list(ta, tr, vel, rh), length))
SET <- sapply(seq(maxLength), function(x) { calcSET(ta[x], tr[x], vel[x], rh[x]) } )
# }
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