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Hi, I have done a model in design builder (4.26m X 4.87m X 3.05m). Location: Chennai Activity: Domestic bedroom External wall: made of 3 layers. Cement 1cm , brick 20cm, cement 20 cm Roof: Concrete slab 20cm , gypsum plaster 1cm Opening: 2 windows single glazed 30% HVAC: no HVAC is installed. Only natural ventilation is allowed with 10ac/h I have done simulation for 12 months, Results show that indoor temperature is higher than outdoor. I dont knnow why? Can someone help me.......

Hi, I have done a model in design builder (4.26m X 4.87m X 3.05m). Location: Chennai Activity: Domestic bedroom External wall: made of 3 layers. Cement 1cm , brick 20cm, cement 20 cm Roof: Concrete slab 20cm , gypsum plaster 1cm Opening: 2 windows single glazed 30% HVAC: no HVAC is installed. Only natural ventilation is allowed with 10ac/h I have done simulation for 12 months, Results show that indoor temperature is higher than outdoor. I dont knnow why? Can someone help me.......