A geometric approach for controlling local overheating in topology optimization for additive manufacturing

Additive manufacturing (AM) has revolutionized part manufacturing, offering unprecedented design freedom and the ability to fabricate intricate structures. Computational design methods like topology optimization (TO) effectively capitalize on AM's design freedom. However, manufacturability constraints must be considered to ensure reliable...

Overheating control in additive manufacturing using a 3D topology optimization method and experimental validation

Overheating is a major issue especially in metal Additive Manufacturing (AM) processes, leading to poor surface quality, lack of dimensional precision, inferior performance and/or build failures. A 3D density-based topology optimization (TO) method is presented which addresses the issue of local overheating during metal AM. This is achieved...

On the effectiveness of passive controls for summer thermal comfort in highly insulated dwellings

Among environmental controls, solar shading and ventilative cooling are widely considered as key passive strategies for limiting the overheating risks in buildings. While their application is encouraged through Energy Performance of Buildings Directive regulations, several studies have shown that summer thermal comfort in heating-dominate...

Controlling local overheating in topology optimization for additive manufacturing

A novel constraint to prevent local overheating is presented for use in topology optimization (TO). The very basis for the constraint is the Additive Manufacturing (AM) process physics. AM enables fabrication of highly complex topologically optimized designs. However, local overheating is a major concern especially in metal AM processes...

Indoor Summer Thermal Comfort in a Changing Climate: The Case of a Nearly Zero Energy House in Wallonia (Belgium)

While the potential impact of climate change mitigation measures is well documented in building sciences literature, there are only relatively sparse studies focusing on the efficiency of adaptation strategies. This paper aims to contribute to this topic by evaluating the extent to which the design of a typical nearly Zero Energy Buildling (nZEB...

Robustness Assessment Method for Future Climate Uncertainties

Energy-efficient buildings tend to cause thermal discomfort due to overheating during summers. With the advent of climate change and increasing outdoor temperatures, the risk of overheating will be exacerbated. Henceforth, the building design must be future proof or robust for climate change. Passive design strategies applied to the building...

Long-term evaluation of residential summer thermal comfort: Measured vs. perceived thermal conditions in nZEB houses in Wallonia

In a context of global warming, summer thermal comfort is a key issue for the design and operation of nearly zero-energy buildings (nZEBs). Although there are various methods and benchmarks for the long-term evaluation of summer thermal conditions in free-running buildings, their application to the residential sector is still debated. Based...

Summer comfort in energy-efficient high-rise dwellings

Nowadays, the high rate of urban population growth due to immigration and scarcity of land has significantly increased the need for new high-rise dwellings. Meanwhile, the recent building regulations require buildings to be highly energy-efficient to reduce the building’s impact on the environment. However, the inherent characteristics of these...

Robustness of Building Envelope: Investigating robust design solutions for energy efficient educational buildings.

Adaptive heating, ventilation and solar shading for dwellings

Calculation of various strategies for the heating of, and the prevention of overheating in, a Dutch standard dwelling that includes (automated) adaptive ventilation systems and solar shading to maintain indoor temperatures at acceptably comfortable temperatures informs this analysis of the costs, impacts and benefits of the use of related...