Phase change material (PCM), placed in an exterior wall, alters the temperature profile within the wall and thus influences the heat transport through the wall. This may reduce the net energy transport through the wall via interactions with diurnal temperature swings in the external environment or reduce the electricity needed to meet the net load through the wall by shifting the time of the pe...

Thermal insulation is one of the most effective methods reducing energy consumption in buildings. Therefore, parameters influencing optimum thickness are widely investigated. In this study, obtained using life cycle analysis method and genetic algorithm by considering size heating cooling systems as an optimization variable, which has not been addressed earlier researches. Furthermore, effect c...

although in recent two decades, the concept of dielectric barrier discharges (dbds) have been developed in ozone production well, air pollution control, plasma screens and control of chemical, and biological and medical processes, employment of this concept for high voltage applications to improve insulation performance as an alternative to the pressurized gas-insulated systems (gis) utilizing ...

Thermal energy storage is an essential component of solar heating systems. A numerical analysis of thermal stratification in hot water storage tanks suitable for solar water heating applications is presented in this paper. Transient, axi-symmetric, turbulent natural convection in fully and partially charged storage tanks for varying Rayleigh Number in the range of 10 to 10 is studied. Mix Numbe...

People’s tendency towards living in apartment houses is increasing in a densely populated country. However, some residents living in apartment houses are bothered by noise coming from the houses above. In order to reduce noise pollution, the communities are increasingly imposing a bylaw, including the limitation of floor impact sound, minimum thickness of floors, and floor soundproofing solutio...

Using a mathematical heat transfer model including anisotropic heat conduction, radiation, and RF heating, we use our software WIAS-HiTNIHS 1 to perform numerical computations of the temperature field in axisymmetric growth apparatus during sublimation growth of silicon carbide (SiC) bulk single crystals by physical vapor transport (PVT) (modified Lely method). As it is not unusual for the ther...

In recent years, fabricated composite wall panels have been widely used in building materials markets at home and abroad, their main advantages are convenient construction, low energy consumption, heat sound insulation. However, also some common problems practical applications, such as large dead weight, weak seismic performance, prone to cracks, failing meet the higher energy-saving requiremen...

Experimental research was conducted to study the fire resistance of steel tubular columns used in prefabricated and modular construction. In order to achieve high-efficient prefabrication and fast on-site installation, membrane protections using board products and thermal insulation blankets are adopted as the favorable protection method. Three protected tubular columns were tested in a full-sc...

By optimizing the design of building envelope, it is possible to create a more comfortable and energy-efficient indoor environment for occupants. However, due environmental issues in high-density cities, open balconies might affect health The current research focuses on effect single balcony form different climates, which could be detrimental diversity designs. Therefore, necessary re-examine r...