In the framework of the European program of»Polis", an extensive network of 27 selfregistering stations, which were recording air temperatures inside the urban environment of the city of Athens for a time period of two years, from August 1996 until August
In urban areas, main air flows from prevailing winds are strongly modified, depending on constructions’ morphology and urban microclimate’s effects. The meteorological data on the wind speed are often available from outside city centres whereas this wind
In this paper we are introducing the first versionof COMFORT-EX, a computational tool, with afriendly interface, developed in Java languageand visible from any computer with an Internetbrowser. This tool pretends to assist architects,landscape architects and urban planners to determinethe correct design strategies to followfor a project in specific climate conditions. Italso helps to evaluate the thermal comfort sensation,and to make the pertinent corrections ifnecessary. A selected case study sited in thecampus of the University of Sonora, evaluatedwith COMFORT-EX, is described.
Art does never just copy nature. There existsalways a transcendental added value due to theintervention of the artist himself. In some formsof art, such as in painting or sculpture this ismore obvious. However, the more abstract andnon-figurative the form of art the less obviousthis becomes such as in the case of architectureand music where the starting points are not frommotives that already pre-exist.
The increase of living standards in buildings andhigh summer maximum air-temperature valuesduring the last years have increased the installationof A/C in buildings. Analysis of the summerambient temperatures is thus necessary toinvestigate the important impact on energy consumption.Ambient temperature data from theNational Observatory of Athens station for theperiod 1977 - 2004 are presented.
The Energy Performance of Buildings Directive(EPBD) lays down requirements as regards:- the general framework for a methodology ofcalculation of the integrated energy performanceof buildings;- the application of minimum requirements onthe energy performance of new buildings;- the application of minimum requirements onthe energy performance of large existingbuildings that are subject to major renovation;- energy performance certification of buildings;and- regular inspection of boilers and of airconditioningsystems in buildings and in additionan assessment of the heating installationin which
In order to compare measurements and subjective votes on thermal comfort in a nonconditionedindoor environment under German climate conditions, a field survey was carriedout in an office and laboratory building in Karlsruhe during July 2005. Over a period of 4weeks 50 subjects filled in questionnaires twice a day every Tuesday and Thursday and accompanyingmeasurements were carried out at the workplaces.
Recently, the ventilation for the removal of pollutants has received much attention in responseto the increased needs for the health and better comforts of the occupants in apartmenthousing. To provide constant ventilation air flow, constant airflow mechanical ventilationsystem is predicted to be installed, and the installation of such mechanical system would leadto many problems.The purpose of this study is to evaluate application of hybrid ventilation system using thebalcony space in apartment housing.
This paper presents a new design concept of hybrid air conditioning system by using aportable air conditioner to achieve a better personal control of indoor environment withoutsacrificing the responsibility to a sustainable environment. The results of the detailedcomputational flow dynamics (CFD) simulation in this study, through a systematic analysison the parameters of wall opening, outdoor wind speed and temperature, show that with anappropriate design of wall openings, this hybrid system can sustain a comfortableenvironment until affected by strong wind blast.
This research proposes a simple device added to a window. The device improves indoorventilation using solar heat. It made from shoji paper, which is the traditional paper of Japan.The structure of the device is five air layers from five partitions of shoji paper. The deviceprovides insulation. In summer, it is used for ventilation. In winter, it is used for insulation atnight. Experiments were conducted with the device, and the ventilation performance andthermal insulation were confirmed. This paper reports the results of a numerical analysis ofthe device installed in a building model.
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