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Abstrakt

Jednymi z najważniejszych kryteriów dla oceny budynków jest stan klimatu wewnętrznego i zużycie energii. Silne tendencje do oszczędzania energii skutkują nie tylko stosowaniem lepszych przegród, ale również elementów budowlanych, takich jak okna, charakteryzujących się dużą szczelnością. Jednocześnie, w budynkach nowych oraz istniejących i modernizowanych, stosowane są tradycyjne rozwiązania wentylacji. W takich przypadkach działanie wentylacji staje się istotnym czynnikiem dla realizacji wymagań energetycznych i środowiskowych. Poniżej przedstawiono wybrane wyniki wieloletnich badań. Wyniki te uzyskano drogą badań ankietowych, kompleksowych pomiarów w jednorodzinnych, wielorodzinnych i biurowych budynkach istniejących oraz symulacji komputerowej procesów wentylacyjnych. Celem opracowania jest zaprezentowanie i podsumowanie dużej liczby badań opisujących wpływ wentylacji naturalnej i szczelności przegród na stan środowiska wewnętrznego.
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Autorzy i Afiliacje

Marian B. Nantka
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Abstrakt

In the present study performance of an airflow window in removing contaminants as well as providing thermal comfort for the occupants was investigated. Both natural/mixed ventilation methods were studied and the full heating load as well as contaminant sources in the office rooms considered. Then, the local and average temperature, relative humidity, velocity as well as CO2 and dust concentration were extracted from simulation results and compared to criteria in international ventilation standards. It was found that except in the big room having 8 m×6 m flooring, natural ventilation from the airflow window can satisfy the thermal and relative humidity conditions in the international ventilation standard except for the American Society of Heating, Refrigerating and Air-Conditioning Engineers. However, the thermal comfort in the room which was measured by extended predicted mean vote could not be achieved when the window operates in the natural ventilation mode, even with a 0.4 m height opening in the small (3 m×4 m) room. Finally, results indicated that the airflow ventilation system installed in small and medium offices operation can provide indoor condition in the ventilation standard either in natural/mixed operation mode consuming less energy than the traditional heating, ventilation, and air conditioning. Besides, the airflow system not only was not able to provide thermal comfort condition in the big office but also its application was not economically feasible.
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Bibliografia

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Autorzy i Afiliacje

Ildar Fathi Ajirlou
1
Cüneyt Kurtay
1

  1. Gazi University, Faculty of Engineering and Architecture, Department of Architecture, Yükselis 5, 06570 Maltepe-Ankara, Turkey

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