LoginExperimental investigations and CFD simulations were carried out to evaluate the performance of square and circular section wind - driven systems for natural ventilation application in buildings.
Bibliographic database Airbase
AIRBASE is the Bibliographic Database of the AIVC. It contains publications and abstracts of articles related to energy efficient ventilation. Where possible, sufficient detail is supplied in the bibliographic details for users to trace and order the material via their own libraries. Topics include: ventilation strategies, design and retrofit methods, calculation techniques, standards and regulations, measurement methods, indoor air quality and energy implications etc. Entries are based on articles and reports published in journals, internal publications and research reports, produced both by university departments and by building research institutions throughout the world. AIRBASE has grown and evolved over many years (1979 to present day, over 22000 references and 16000 documents available online). For most of the references, the full document is also available online.
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Calculations using CFD are presented for adventitious openings in which the flow is not fully developed. It is shown that the quadratic equation performs significantly better than the power law i.e.
This paper presents an overview of systems that utilise thermal mass in conjunction with night ventilation.
In the design of natural ventilation systems, there is a wide range of possibilities with regard to the selection of window type and the positioning of windows in the facade.
This paper describes the development of a simplified tool which should be used at the early design stage for predicting air ventilation rates in a building.
The basic mechanism for natural ventilation in a building involves air flowing through purpose-made ventilator openings.
The effectiveness of a ventilation system in terms of the age of air and its ability to remove contaminants will be significantly affected if part of the exhaust air is recirculated.
This paper reports the results of computer simulations of a hybrid-ventilated building using ESP-r (Environmental Systems Performance for research). A new school building in Norway was used for this simulation study.
This paper reports the results of a study to test two novel procedures to model dynamic thermal conditions of an enclosure within Computational Fluid Dynamics (CFD).
Using the wind pressure difference method to estimate the cross ventilation potentials of a building at a particular site, the appropriate wind frequency data at the building site are important (Aynsley et al, 1977, Su, 2001).
Acoustics research is thriving and allowed significant progress in the improvement of living conditions.However, a gap has been noted between research and practical applications in situ.
During the design process of heating systems, the designer must analyse various factors in order to determine the best design options.
The effect of the synoptic scale atmospheric circulation on the urban heat island phenomenon over Athens, Greece, was investigated and quantified for a period of two years, using a neural network approach.
The main purpose of the present study is to define places in the major Athens area where the heat island effect occurs. Several important climatic parameters are examined in combination with the application of various statistical tests.
The paper describes the comfort analysis based on simulation tools, microclimaticmeasurements and people response to interview.The results confirm a discrepancy between quantitative evaluation and sensatioin vote, butlowe then one reported by othe
Since the wall insulation of buildings and the quality of glazing improve more and more, the window frame becomes the weak point in the facade from a thermal perspective. This paper discusses a new frameless window construction.
Experimental and analytical assessment of three types of spacer bars used in making insulated glass (IG) units were performed and reported earlier, Elmahdy et al (1993).
The potential of controlling techniques for an electrochromic device is investigated in a systematic way, using both experimental and theoretical tools.
Energy performance standardisation evaluates all measures at the building and building services level that improve energy efficiency. Thermostatic valves are one of the choices, which are considered.
The building system provides a solar energy passive contribution into a bio-climatic assembly. The heat carrier is the air. The solar radiation thermal conversion is made through the greenhouse effect.