English

Techniques that improve solar reflectivity of urban surfaces to mitigate urban heat island phenomenon have become widespread with the use of highly- reflective paints (Kondo, 2008). Since these reflective paints have a higher proportion of diffuse reflection, there is an anxiety that if used on the sides of buildings, much of the reflected solar radiation is scattered toward the ground and surrounding buildings. This becomes even more of a problem when used in narrow street canyons.

Three versions (type 1, 2 and 3) of untypical climate data based on the Weather Year for Energy Calculations 2 (WYEC2) methodology were calculated. The following parameters were altered in comparison with standard WYEC2 year: the average value of a total daily amount of solar radiation; the average and maximum wind speed; the average, minimum and maximum dry bulb temperature; the average, minimum and maximum dew point temperature.

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.