zaključna naloga Razvojno raziskovalnega programa I. stopnje Strojništvo
Aleksej Knap (Author), Matjaž Prek (Mentor)

Abstract

Danes večina življenjskih proces človeka poteka v notranjih prostorih, kjer je zrak omejen in njegova kakovost lahko ogroža ljudi oz. negativno vpliva na njihovo počutje. Za zagotavljanje ustrezne kakovosti zraka v notranjih prostorih se uporabljajo prezračevalni sistemi, ki delujejo na osnovi različnih principov. V zaključni nalogi smo se spoznali z vrstami prezračevalnih sistemov in določevanjem eksperimentalne učinkovitosti prezračevanja. Naredili smo pregled znanih metod za določevanje učinkovitosti z uporabo sledilnega plina in nato izbrali metodo povečevanja. Pripravili smo eksperimentalno preizkuševališče s potrebno merilno opremo in sledilnim plinom ter spremljali spreminjanje koncentracije sledilnega plina s časom. Na podlagi izmerjenih podatkov smo nato izračunali srednjo starost zraka, ki nam pove koliko časa zrak preživi v prostoru, od svojega vstopa do izstopa, in nam omogoča določitev učinkovitosti prezračevanja. Izvedli smo več meritev s spremembo dovedenega svežega zraka in koncentracije sledilnega plina, katerih rezultate smo primerjali in določili vzroke za odstopanja.

Keywords

diplomske naloge;prezračevanje;zrak;metoda povečevanja;učinkovitost prezračevanja;sledilni plin;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [A. Knap]
UDC: 697.9:53.08(043.2)
COBISS: 16717083 Link will open in a new window
Views: 879
Downloads: 214
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Other data

Secondary language: English
Secondary title: Experimental determination of ventilation efficiency with the use of tracer gas
Secondary abstract: Today, most of the human activity is located indoors, where the air is restricted and its quality can have negative impact on the resident%s well-being, in some cases even harmful effects. To ensure proper indoor air quality a variety of ventilation systems are used. We researched different types of ventilating principles and methods to determine ventilation efficiency using tracer gases. After reviewing different methods, we decided to use the step-up method to determine ventilation efficiency. We prepared the experimental setup with needed measuring instruments and tracer gas which were used to measure concentration difference with time. We used experimental measurements to determine mean age of air, which represents the time air has spent in a room since its entrance. We used mean age of air to determine ventilation efficiency. During experiments we changed the amount of supplied fresh air and tracer gas so we could observe their effect and compare results.
Secondary keywords: ventilation;air;step up method;ventilation efficiency;tracer gas;
Type (COBISS): Final paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XIV, 34 f.
ID: 11186101
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