building energy simulation

By the end of 2020 all newly constructed buildings have to be nearly zero energy buildings (nZEB). In school and office buildings the ventilation system has a large contribution to the total energy use. A smart control strategy that adjusts the operation of the ventilation to the actual demand can significantly reduce this energy use. Consequently, control systems are becoming an important part of the ventilation system in these nZEB buildings.

Most of the degradation of works of art in historic buildings is caused by unfavourable indoor climate conditions. The most important works of art receive invasive conservation treatment, called direct action, but this treatment is very expensive. To avoid invasive conservation treatments and ensure that works of art are protected for now and for the future, indirect action to mitigate the deterioration process is necessary. This holds that exposure to unfavourable indoor climate conditions should be avoided, as far as is compatible with its social use.

Participants in building simulation supported projects are diverse (e.g. design teams, clients, project managers and simulation practitioners) and often geographically dispersed. There is much about conventional approaches to building performance assessments and work practices that reduces productivity and obscures useful indicators of performance. Often, the goal of understanding how the building works and the impact of design decisions is hampered by limitations in the presentation of performance data.

Chinese kang, a potentially energy-efficient domestic heating system in China, uses high thermal mass to store surplus heat from the stove during cooking and releases it later for space heating. In this paper a preliminary mathematical model is developed for a House Integrated with an Elevated Kang system (HIEK). This model considers the transient thermal behaviors of building envelope, kang system and indoor air. The macroscopic approach is used to model the thermal and airflow process for the elevated kang system.

Climate change phenomena such as global warming and urban heat island effects cause serious problems for the development of building technology. Therefore, it is imperative that architects and designers consider the effects of climate change on long-term building performance. At present, energy simulations are often used to evaluate the indoor thermal environment and energy consumption of buildings. In these simulations, it is common to use regional weather data that are usually based on current or past weather conditions.

Building energy simulation has proved useful in the development of building energy codes (especiallyperformance-based) and subsequent code compliance checking. A weather year is required for thehourly computation of heating/cooling loads and corresponding energy consumption. Many locationshave measured daily solar radiation data, but not hourly. Attempts were made to model hourly globalsolar radiation (GSR) data from measured daily values using the Liu and Jordan method for Harbin,Beijing, Shanghai, Kunming and Hong Kong.

This work is aimed at assessing the economical feasibility of a retrofit intervention consisting into the façade renovation of an office building, built in the 70s and located in Italy near Torino. The office building, characterized by high occupancy rate