Introduction

This describes comfort model API, consisting of the functions of the comf object. To use this, simply include util.js, psychrometrics.js, and comfortmodels.js as scripts:

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Details

comf.pmv(ta, tr, vel, rh, met, clo, wme)

This function is Fanger's Predicted Mean Vote model.

Input parameters: * ta : Air temperature [°C] * tr : Mean radiant temperature [°C] * vel : Air velocity [m/s] * rh : Relative humidity [%] * met : Metabolic rate [met] * clo : Clothing insulation level [clo] * wme : External work [W/m^2] (typically zero)

Outputs an object with properties pmv, and ppd, where * pmv : Predicted mean vote * ppd : Percent predicted dissatisfied

comf.pmvElevatedAirspeed(ta, tr, vel, rh, met, clo, wme)

This is the PMV model, with a special technique that allows air speeds above 0.15m/s to be modeled.

Input parameters as in comf.pmv.

Outputs an object with properties: * pmv : Predicted mean vote * ppd : Percent predicted dissatisfied [%] * ta_adj: Air temperature adjusted for air speed [°C] * cooling_effect : The difference between the air temperature and adjusted air temperature [°C] * set: The Standard Effective Temperature [°C] (see below)

comf.pierceSET(ta, tr, vel, rh, met, clo, wme)

This is the pierce Standard Effective Temperature model, also known as the "two-node" model.

Input parameters as in comf.pmv.

Outputs a number representing SET* [°C]

comf.adaptiveComfortASH55(ta, tr, runningMean, vel)

The ASHRAE Standard-55 adaptive comfort model.

Input parameters * ta : Air temperature [°C] * tr : Mean radiant temperature [°C] * runningMean : Mean daily average outdoor temperature (see standard 55) [°C] * vel : Air velocity [m/s]. Must be less than or equal to 0.3, or one of 0.6, 0.9, and 1.2

Outputs an object with properties: * tComfLower80 : The lower boundary of the 80% acceptability limits [°C] * tComfUpper80 : The upper boundary of the 80% acceptability limits [°C] * tComfLower90 : The lower boundary of the 90% acceptability limits [°C] * tComfUpper90 : The upper boundary of the 90% acceptability limits [°C] * acceptability80 : True if the input conditions lie within the 80% acceptability limits, false otherwise * acceptability90 : True if the input conditions lie within the 90% acceptability limits, false otherwise

comf.adaptiveComfortEN15251(ta, tr, runningMean)

The EN-15251 adaptive comfort model.

Input parameters * ta : Air temperature [°C] * tr : Mean radiant temperature [°C] * runningMean : Running mean average outdoor temperature (see EN15251) [°C]

Outputs an object with properties: * tComfILower : The lower boundary of the class I acceptability limits [°C] * tComfIUpper : The upper boundary of the class I acceptability limits [°C] * tComfIILower : The lower boundary of the class II acceptability limits [°C] * tComfIIUpper : The upper boundary of the class II acceptability limits [°C] * tComfIIILower : The lower boundary of the class III acceptability limits [°C] * tComfIIIUpper : The upper boundary of the class III acceptability limits [°C] * acceptabilityI : True if the input conditions lie within the class I acceptability limits, false otherwise * acceptabilityII : True if the input conditions lie within the class II acceptability limits, false otherwise * acceptabilityIII : True if the input conditions lie within the class III acceptability limits, false otherwise