Učinkovitost naravnega prezračevanja predavalnice

Dorčić, Goran (avtor), Prek, Matjaž (mentor)

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.

• Jezik: Slovenski jezik
• Ključne besede: naravno prezračevanje, učinkovitost, predavalnica, okna, sledilni plin, koncentracija, meritve
• Vrsta gradiva: Zaključna naloga
• Tipologija: 2.11 - Diplomsko delo
• Organizacija: FS - Fakulteta za strojništvo
• Kraj izida: Ljubljana
• Založnik: [G. Dorčić]
• Leto izida: 2022
• Št. strani: XIV, 41 f.
• PID: 20.500.12556/RUL-139125
• UDK: 697:628.8(043.2)
• COBISS.SI-ID: 121182211
• Datum objave v RUL: 31.08.2022

DORČIĆ, Goran, 2022, Učinkovitost naravnega prezračevanja predavalnice [na spletu]. Diplomsko delo. Ljubljana : G. Dorčić. [Dostopano 19 maj 2025]. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=139125

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Effectiveness of natural ventilation of the lecture hall

Izvleček

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.

• Ključne besede: natural ventilation, efficiency, lecture hall, windows, tracer gas, concentration, measurements