Fair Conditioning Thermal Comfort Zone Representation – Fair Conditioning

Thermal Comfort Zone Representation



Academic Year

2'nd Year

Complexity Level


Content tags

Architectural Design


Space Cooling


Thermal comfort

Activity Type


Activity duration

< 1 hour


To come up with a range of thermal comfort conditions for your city and identify with one’s own thermal comfort range.


Students will understand that thermal comfort is not a fixed entity. It’s range can be varied by enabling thoughtful cooling techniques.


Printouts of city specific psychrometric charts for all the students. To be downloaded from: http://www.fairconditioning.org/resources/#149-other-resources-1476600454

  1. A conceptual knowledge of thermal comfort & psychrometry.
  2. An understanding of psychrometric chart.

Step 1: Take printouts of psychrometric charts of your city for all students and let each carry one chart with yourself.

Step 2: Plot different conditions and temperature on the chart, by changing their locations. Each student should carry out this activity or ideally few to demonstrate the difference of thermal comfort experiences:

Conduct the observations in different points such as:

  • Under the sun, peak time
  • Peak summer time under the tree
  • Under a semi-covered structure
  • Beachside, if there is around
  • On the road, around highly built environment
  • In the park, around few trees
  • In a courtyard inside a building
  • Inside the room with decent ventilation, poor ventilation and no ventilation

And such different locations and observe two following things: 

  1. How do you feel in this location, rate in the level of comfort, On a scale of 1-10 (1 being highly uncomfortable and 10 being highly comfortable)
  2. Plot both Dry Bulb Temperature and Relative Humidity on the psychrometry chart. 

Step 3: Identify your own comfortable zone and uncomfortable zone by joining the dots on the psychrometric chart. For eg. If your comfort zone is near to the scientific standards i.e. 98.6°F (37°C), students will be able to experientially identify with that temperature.

Step 4: Share the findings and zones with others, see if there is diversity.

Step 5: Compare the comfort zone with the weather data.

Step 6: Reflect on following points:

  • What makes the Thermal comfort dynamic and non-static? How much difference is it for different people in the same city, zone?
  • Are our buildings designed according to any thermal comfort range or standards? What are those and how appropriate are those? 
Thermal Comfort Zone for Chennai

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