The primary factors which determine thermal comfort are:Air temperatureAir speedRelative humidityRadiant temperatureClothing insulationMetabolic rate
Some of the existing thermal comfort measurement indices are: Effective Temperature (ET)Equivalent warmth (EW)Heat Stress Index (HSI)P4SR which is predicted four hour sweat rateResultant Temperature (RT)Equatorial Comfort Index (ECI)Operative Temperature (OT)
Some tools that help to define the comfort range required to design climate-responsive buildings are:Psychometric chartBio-climatic chartMahoney’s table
Some passive design strategies used for climate-responsive buildings are based onBuilding orientationPlan formDesign elementsRoof formFenestrationRoof and wall materialsVegetation