Investigating the Effect of Different Proportions of Iwan and Window Area of Adjacent Room on Cooling/Heating Load and Energy Consumption in Central Courtyard Model in Yazd

The city of Yazd has a large number traditional houses. Houses with central courtyards and an Iwan were suitable for establishing thermal comfort conditions. In this research, the effect Iwan's depth ratio adjacent room's openings on condition in residential courtyard buildings evaluated. current research aims to provide optimal model increase sustainable development use such models as contemporary housing hot dry climate Yazd. order investigate parameters, samples from north-facing room south-facing different proportions sizes window simulated Design Builder software. results showed that wall ratio's (WWR) room’s significantly affects (according cooling load, heating energy consumption) room. obtained will be new recover concepts old patterns help solve problems.