Tomoyuki Chikamoto

A collaborative platform for sustainable building design based on model integration over the internet

Considerable potential exists for reducing life cycle environmental impacts of buildings in Japan. While energy consumption during the operation stage of a buildings lifetime is usually dominant, indirect energy use and pollutant emissions associated with production and disposal of building materials during construction and demolition are significant. For sustainable building design, interactions between the performance and dynamics of the building structure and energy systems must be considered. A collaborative platform based on the distributed object-based modelling environment, DOME, and a set of component models for sustainable building design analysis is presented. Integration examples of the component models to study particular building designs are described.

THE EXPERIMENTS OF PARTIAL REMODELING REGARDING THERMAL INSULATION IN EXISTING MULTI-FAMILY HOUSING

In this paper, we report the results of the experiments of partial remodeling regarding thermal insulation in existing multi-family housing. In this experiments, we surround only one part of dwelling space by thermal insulation partitions and fittings. We investigate the remodeling dwelling from three approaches. The results of the experiments are as follows; 1) In environmental engineering field, we clarified thermal environment performance in the remodeling dwelling. 2) In housing planning field, we clarified the adaptability of remodeling dwelling to residents’ life. 3) In building construction planning, we clarified construction efficiency in the remodeling construction.

Airflow control for personal air-conditioning in a partly unoccupied zone using a multi-flow ceiling cassette type packaged air-conditioner

Abstract There are various demands for air-conditioning in each office space resulting from the variability of thermal distribution caused by a bias of heat sources. Furthermore, individual demands on the thermal environment are diverse. Therefore, it is difficult to satisfy all demands using conventional air-conditioning systems since these assume perfect mixing. Instead, demand may vary with the result that some spaces could be excessively or unnecessarily cooled. This paper examines an airflow and temperature control for personal air-conditioning. This is aimed at providing personal comfort on demand while not unnecessarily cooling unoccupied zones. The method utilizes a multi-flow ceiling cassette type packaged air-conditioner. In this study, thermal comfort and energy performance were analysed using (Computational Fluid Dynamics). From this a personal air control and thermal comfort strategy was developed.