English

This paper presents a methodology for optimizing skylight design with the considerations of thermal comfort, daylight availability and energy performance by integrated daylight and thermal simulation. Dynamic thermal modelling programmed IES<VE> and daylight simulation engine Radiance are used as simulation tools to study energy performance of a shopping mall atrium with a skylight on the roof top located in Hangzhou, China.

The contribution focuses on the simulate-based design and optimization of photovoltaic (PV)-driven cooling systems for residential buildings in hot and dry countries. The analyzed system includes the PV generator, the electric battery, the vapor compression chiller, the air-conditioned building and the controller technologies.

The development of solar district heating is experiencing a booming. In some case the space available for the integration of solar panels is limited and the use of decentralized systems is necessary. For decentralized solar district heating systems different hydraulic schemes at the substation level, with or without local use of solar energy, is possible. The present paper detailed an advanced study on decentralized solar district heating system using dynamic simulation software.

We present a transient coupled thermal and electrical model of BIPV systems installed on rooftops and naturally ventilated through air cavities imposed by building conception rule (ventilation of skeleton). This model realized in TRNSYS software was experimentally validated using five different residential BIPV systems commercially available in France in 2010. Relative differences between predicted and measured data exceeding 2% and 4% were observed for the thermal and electrical results respectively. The model was accurate to 2% for sunny days and less precise for cloudy days.

This paper describes the development of a technique for extrapolation of dynamic daylighting simulations from a limited number of high dynamic range photographs.  This technique allows us to photographically capture and measure per-pixel lighting quantities from existing spaces in a limited time frame; and the measured information is used to establish a statistics based daylight coefficient model for the studied scene.

The present paper is concerned with the results of the numerical investigation of unsteady laminar, natural convection in an asymmetrically heated inclined open channel (i =0, 45, 60 and 75◦) with walls at uniform heat flux (qw = 10, 50, 75 and 100W · m−2). Two methodological approaches have been adopted to in-vestigate the air flow in this case: 2D and 3D DNS, and four sets of inlet-outlet velocity-pressure boundary conditions have been considered. Significant differ-ences are observed in the flow dynamics between 2D and 3D results.

This paper outlines a digital design and simulation-based process conceived and tested, for the automation of environmentally responsive building ‘forms’, optimized for Energy and Lighting performance. The process sequences 4 different modeling and simulation programs to evaluate energy loads and lighting levels of a typical office building whose forms are ‘generated’ by an automated script running Rhino + Grasshopper, EnergyPlus, MATLAB and RADIANCE.