20.500.12556/RUL-139125 Učinkovitost naravnega prezračevanja predavalnice Effectiveness of natural ventilation of the lecture hall Naravno prezračevanje je v preteklosti bilo glavni način prezračevanja saj vir energije za mehansko ni obstajal. Od takrat je izziv vzdrževanje ustrezne kakovosti zraka samo z enoostranskim naravnim prezračevanjem. To je posebej opazno pri velikih prostorov kjer želimo zagotoviti ustrezno kakovost zraka v celotni globini prostora. Težava se pojavi pri večji oddaljenosti od prezračevalne odprtine kjer vpliv prezračevanja ni enak kot poleg odrptine. Zaradi tega v zaključni nalogi obravnavamo povezave med vplivom in učinkovitostjo naravnega prezračevanja, konfiguracije odprtja okna in položaja v predavalnici. V nalogi je opisan problem ki ga obravnavamo, teoretične osnove na katerih temelji raziskava in potek raziskave. Pri eksperimentalnem delu je uporabljena metoda zmanjševanja koncentracije sledilnega plina. Mertive so bile opravljane v predavalnici III/3A na Fakulteti za strojništvo pri čemer je upoštevana globina in višina predavalnice. Na koncu izvajanja meritev dobimo krivuljo padanja koncentracije sledilnega plina iz katere lahko določimo pretok zraka in učinkovitost prezračevanja. Cilj naloge je na osnovi eksperimentalno dobljenih rezultatov podati priporočila za naravno prezračevanje prostorov kjer biva več ljudi ter kako zagotoviti ustrezno kakovost zraka neodvisno od položaja v prostoru. In the past, natural ventilation was the main method of ventilation, as the source of energy for mechanical ventilation did not exist. Since then, the challenge has been to maintain adequate air quality with only one-sided natural ventilation. This is especially noticeable in large rooms where we want to ensure adequate air quality throughout the entire depth of the room. The problem occurs at a greater distance from the ventilation opening, where the influence of ventilation is not the same as next to the opening. For this reason, in this assignment we discuss the connections between the influence and efficiency of natural ventilation, the configuration of the window opening and the position in the lecture hall. The assignment describes the problem we are dealing with, the theoretical foundations on which the research is based and the course of the research. The method of reducing the tracer gas concentration is used in the experimental work. The experiments were held in lecture hall III/3A at the Faculty of Mechanical Engineering, taking into account the depth and height of the lecture hall. At the end of the measurements, we get a tracer gas concentration drop curve from which we can determine the air flow and ventilation efficiency. The aim of the assignment is to give recommendations for natural ventilation of rooms where several people live and how to ensure adequate air quality regardless of the position in the room, based on experimentally obtained results. naravno prezračevanje učinkovitost predavalnica okna sledilni plin koncentracija meritve natural ventilation efficiency lecture hall windows tracer gas concentration measurements true false false [G. Dorčić] Slovenski jezik Angleški jezik Zaključna naloga 2022-08-31 08:30:46 2022-08-31 08:30:50 2023-10-24 10:11:19 0000-00-00 00:00:00 2022 0 Ljubljana 0 XIV, 41 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 697:628.8(043.2) 243775 121182211 17223.pdf 17223.pdf 1 98A30D1C51DBA5FE1A5994BD1CA6FE03 49d1877ac1f9481dcc26227f299cfe7239f25a28a476d4e9ffd2634d10e0cdb5 6b2c307c-28f6-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159663 Fakulteta za strojništvo 0 0 0