Thermal Characterisation of Urban Fabrics Using GIS and Townscope Modelling Tool

Nowadays energy performance is an increasing concern to sustainable urban planning because of itsimplications in energy consumption patterns. Interactions between urban form and urban microclimatehas been broadly studied from large scale such as the city as a whole through heat island studies.However urban planning needs to be addressed at local scale as well.The purpose of the work is to study experimentally thermal conditions on outdoor spaces within theurban fabric at neighbourhood scale in Santiago city, Chile.

Revision of the Inertia Concept in the Use of Free Heat Gains. Solar Radiation.

The utilization factor is a relative well-known concept used in some simplified calculation methodssuch as the procedure described in the CEN EN-13790 where the FU depends on the inertia of thezone. In this paper we will analyse the inertia influence of each component of the zone in the inertia ofthe zone itself. With the results of this study, we will be able to know where to act if we desire to ariseor diminish the whole thermal inertia of a room. The present paper starts analysing the energy storedand released in building components as walls.

Pedestrians’ Comfort Index in Urban Settlements Using CFD Analysis

Application of scale models along with the use of wind tunnel testing facility have been the primary tool used in building aerodynamic studies by architects and planners. Problem areas in a given airflow study could be identified by an experience wind engineer; however, the timely sharing the results with the design team becomes essential for a successful project.

Daylighting information throughout Europe using the SATEL-LIGHT and SODA internet servers

The Satel-Light Internet server provides to designers and engineers daylight information which was previously unavailable. It is based on a database of daylight and solar radiation, covering Western and Central Europe, which was produced as part of a European project called SATELLIGHT. This database has been computed from the images produced by the Meteosat satellite. Thus it has an excellent spatial resolution (every 5 km on average) and an excellent temporal resolution (every 30 mn).

Integrating solar radiation, building mass, thermal insulation, and air ventilation for energy conservation in buildings.

This research investigates the effect of integrating solar radiation, internal building mass, thermal insulation and natural ventilation on building thermal performance. A field study and a computer simulation were conducted on the Beliveau house located in Blacksburg- Virginia. The house designer implemented several new ideas for integrating solar radiation, thermal mass, thermal insulation, and air ventilation to conserve energy. The goal of this study is to investigate the relationships between these design variables.

Quantification of uncertainty in thermal building simulation - Part 2: Stochastic building model.

In order to quantify uncertainty in thermal building simulation stochastic modelling is applied on a building model. Part l deals with the stochastic thermal building model and a test case. This paper deals with the determination of the stochastic input loads. The importance of obtaining a proper statistical description of the input quantities to a stochastic model is addressed and exemplified by stochastic models for the external air temperature and the solar heat gain.

Cost effectiveness of some remedial measures to control summer time temperatures in an office building.

This paper presents a summary of calculations on the total cost effects of the remedial measures to reduce high summer time room temperatures in a hypothetical building. In the base case the room air temperature is too high during the summer, and causes a considerable reduction in the productivity. The following economical items are included in the study: first cost of the remedial measure, the effect of the measure in operating cost, particularly on energy consumption, and the effect on productivity.

Condensed weather data for heating calculation.

Two methods for reducing weather data are assessed and compared with respect to use for heating calculations. Degree days for calendar months, utility bill periods and without weekends were calculated and compared along with temperature 'bins' of various sizes using the CIBSE Example Weather Year. Wind velocity and solar radiation are also analysed with respect to degree days. Both methods, degree days and the bin method, are found to represent the actual weather conditions adequately for use in heating calculations.