عمار الطائي

Dynamic insulation reduces energy consumption by adjusting thermal conductivity based on climate changes. Sustainable building practices focus on enhancing the building envelope for better energy efficiency and regulating indoor-outdoor interactions. This study eva‎luates dynamic insulation technology in buildings under harsh climates, focusing on Iraq. In Iraq's harsh climate, dynamic insulation can create a more sustainable and comfortable environment. Part A of the study reviews dynamic insulation technology and its potential in Iraqi buildings with intermittent heating and cooling. It compares dynamic insulation performance in a Baghdad office to conventional insulation, considering lighting, occupants, equipment, and solar gains. The collected data inform the design and implementation of Part B. It addresses physical phenomena in wall layers of static, dynamic, and modified dynamic models to improve their performance and design. Part B suggests three wall models (static, dynamic, modified dynamic) to eva‎luate their thermal performance during the heating season. The results show that dynamic insulation in Iraqi buildings can reduce energy consumption by 28% during heating and 11% during cooling seasons. The intake front achieves a preheating efficiency of 77% for the dynamic wall and 81.8% for the modified dynamic wall, enhancing fresh air quality and conditions. Dynamic insulation maintains its effectiveness during intermittent cooling and heating and enhances solar energy absorption during heating. It significantly improves thermal comfort, reducing PPD by 81% and improving PMV by 88% with heating, and reducing PPD by 66% and improving PMV by 79% during cooling. Additionally, the modified dynamic wall reduces pressure loss by 50% compared to the dynamic wall, lowering fan power and energy consumption.

گرمايش و سرمايش متناوب , نماهاي استاتيك و پويا

intermittent heating and cooling , static And dynamic facades

Ammar Altaei

Dr. Mostafa Hosseinalipoor - Dr. Sasan Asiyaei