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Sánchez, Francisco; Salmerón, José Manuel; Álvarez, Servando. Calculation of the impact of the urban context on building energy demand and urban comfort. In: CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITECTURE, 20., 2003, Santiago do Chile. Anais... Santiago do Chile, 2003.
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Abstract

There is a clear interrelation between the building energy demands and their surroundings. From the point of view of the buildings, a different thermal performance can be expected depending on these surroundings, and mainly, depending on the rural or urban context in which they are placed. The microclimatic changes due to the urban context are the responsible of increased cooling and heating demands. One of these changes is the well-known “urban heat island” effect. On the other hand, from the point of view of the surroundings, the buildings affect directly to the urban temperatures, solar reflections, overshadows, long-wave exchange, etc. and in consequence to the urban comfort. Both issues should be studied in depth when planning a new urban settlement or trying to develop guidelines or municipal ordinances. Furthermore, taking into account that the building energy consumptions, in terms of heating and cooling, are responsible, in a high degree, of the total energy consumption in developed countries, the focus must be put on the reduction of the building requirements. In this paper, we present a complete methodology in which the coupling between the building and its surrounding is treated using different simulation programs.
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