comfort-temperature

To calculate the comfort air temperature from the standard of ASHRAE-55

Core code comes from https://github.com/CenterForTheBuiltEnvironment/comfort_tool

Usage

npm install comfort-temperature

var ct = require('comfort-temperature').ComportTemperature;

var ta = 15;    // air temperature, [C]
var tr = 25;    // mean radiant temperature, [C]
var vel = 0.8;  // air speed, [m/s]
var rh = 40;    // relative humidity, [%]
var met = 1;    // metabolic rate, [met]
var clo = 0.6;  // clothing level, [clo]
var wme = 0;    // external work, [met]

var result = ct.Calculate(ta, tr, vel, rh, met, clo, wme); 

console.log(result);

Output would be

{
  pmv: -4.558394498497179,
  ppd: 99.999999470295,
  set: 13.537207469450086,
  ta_adj: 8.775882545393353,
  tr_adj: 18.77588254539335,
  cooling_effect: 6.224117454606647,
  cat: 30
}

The cat: 30 °C would be the suggested best Comfortable Air Temperature.

You can double check the result from this web tool: https://comfort.cbe.berkeley.edu/

Put all parameters in the form, then change the Air temperature with the value of cat, you will see the PMV with elevated air speed is the lowest. Which means it's the best comfortable air temperature. https://en.wikipedia.org/wiki/Thermal_comfort#PMV/PPD_method