Nowadays, the energy crisis is one of the controversial issues around the world. Regarding the fact that the largest energy end use in the world belongs to the construction and residential sector, it seems necessary to analyze the energy flow in the buildings. The most sustainable energy design technique is to conserve energy as much as possible. There are various methods to reduce the use of conventional energy from fossil fuels to meet the energy requirement for the building. Various strategies including photovoltaic-thermal systems and insulation systems with the aim of minimizing building...

The overall aim of the first chapter is to improve the knowledge about the simulation of thermal indoor climate for buildings in different climate conditions and its application for computer-based simulations. The work is done in order to simplify the use of CFD as a powerful tool in order to model the temperature distribution within the building envelope in two real cases in Switzerland, and promote a comfortable indoor environment with a maximum reduction of energy consumption. High energy materials like cement, glass, brick and steel are typically used in building construction. However, it...