Approximately 300 low energy houses have been built in the Republic of Ireland by the multi-national CRH Plc and South Dublin County Council as part of a co-ordinated European Commission-supported demonstration project, RE-Start (Renewable Energies Strategies and Technology Applications for Regenerating Towns).
Energy conservation represents a main concern for the environmental, economical and social problems. In this field, educational buildings are large consumer of energy and in many countries need retrofits. In this paper, we propose an energy certification procedure for educational buildings which aims to improve learning and teaching environment while reducing energy consumption. The developed procedure is composed of different levels including a phase of diagnosis and then a phase of calculation of the energy consumption and the energy conservation possibilities.
The needle heat exchanger (acts as a pre filter EU3) was installed in front of the glass fiber used as a fine filter (EU7) in the supply air chamber. Thus, the temperature of the supply air increased and the relative humidity of the fine filter next to the heating unit decreased. The aim of this study was to examine how the installation of the needle heat exchanger effects on the microbial growth and release in the fine filter. The relative humidity of the fine filter in the supply air unit fell below 70 % during different seasons.
The White Paper on renewable Energy states that the total energy requirements in thedomestic sector could be reduced by 50% in EU until the year 2010, half of which could be accounts for by introducing passive and active solar technologies in buildings. A project has been undertaken with the aim to study and propose global strategies, tools and guidelines that will promote the efficient and cost effective global implementation of advanced systems and techniques in the refurbishment of existing settlements in Europe.
Basis of this work was the question of the formation of air flows in ventilated test rooms with regard to wall influences. In order to determine the effects of the room geometry and the air inlet angle a on the airflow a jet which was placed just below the ceiling was observed in symmetrically designed test rooms. Since there is a correspondence between measurement and CFD simulation, velocity vectors are extrapolated from the CFD simulation and analysed for different geometrical data.
Winner of First Prize in the 2 nd Commonwealth Inter-school Design Competition organised by theCommonwealth Association of Architects (CAA), 1991. The winning design was a pair of houses with wind towers. It was praised by the jury as an innovative and original solution to the brief recognising local conditions, elegantly and thoughtfully presented. The planning of the dwelling pleasantly reflected the local lifestyle with an interesting internal environment.
The aim for the design of the ventilation was to achieve the best possible air quality in the non-smoking zones and for the employees in a combined bar/restaurant. Air curtains are used to separate the zones. The experiment proved that the air curtain is vulnerable to temperature differences between the curtain air and the room air but stable conditions have been achieved.. Nicotine concentrations have been measured too. Tests showed that smoking in the non-smoking zones leads to nicotine concentrations above the target levels.
In surgical operating theatres the concentration of contaminants to a minumum level is compulsory so an optimum design of air conditioning is required along with careful control of flow and temperature characteristics to achieve sterile conditions. This paper aims at analysing the performance of the HVAC system design in an egyptian modern hospital.
In this paper, the authors are proposing a concept of a radiant ceiling panel HVAC system integrated with ice storage system to cope with the following requirements : load leveling, energy saving, cost saving and thermal comfort. Series of measurements were carried out on six model office fixtures displayed in a room equipped with that concept of radiant ceiling panel.That system provided a good thermal environment which tallied with the Ashrae et ISO recommandations.The authors plan to introduce this system into real buildings.
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