Comparison between different measures to reduce cooling requirements of residential building in cooling-dominated environment

- Improving lighting system reduces the cooling load might by10%.
- Increasing the set-indoor-temperature reduces the cooling load by 14%.
- Adding 2 cm of polyurethane to the external walls reduces the cooling load by 27%.
- 46% Reduction in the cooling load of the building could be achieved.
- The payback period of such measures varies between 0.5 and 2 years.