Performance Improvement Plan towards Energy-Efficient Naturally Ventilated Houses in Tropical Climate Regions

The majority of the population in Indonesia lives naturally ventilated and unconditioned residential buildings because they cannot afford energy services. This situation is common many countries tropical regions, negatively affecting occupants’ health due to overheating. Therefore, housing types that can cool down indoor temperatures extent possible using a passive approach, rather than an active should be developed. study aims improve houses by considering louver area insulation houses. First, we employ on-site measurement for collecting data such as indoor/outdoor temperature relative humidity Indonesian city, Lhokseumawe. In addition, experimental are used validate numerical simulation model. Second, utilized establish energy-efficient design solutions 14 locations. results show that, compared with cases, different areas insignificantly change air conditions approximately 0.3 1 °C. Additionally, application combined performance improvement both building envelope levels reduce 2.2 °C 8%, respectively. Moreover, daily cooling demand proposed plan reduced 18.90% existing case. Furthermore, annual loads entire simulated regions 46.63 GJ/year (23.09%). potential starting point achieving zero-energy sufficient thermal comfort Indonesia.