20.500.12556/RUL-99580 Učinkovitost pulznega sistema za prezračevanje The efficiency of the pulse ventilation V velikih samopostrežnih trgovinah je problem vzdrževati željene parametre notranjega ugodja. Obravnavan trgovinski center v Ljubljani je velik in ima posebej obremenjene cone z velikimi hladilnimi ali toplotnimi obremenitvami. Te obremenitve še dodatno onemogočajo ustvarjanje željenega ugodja. Povzročajo temperaturno nehomogenost in stratifikacijo, ter višje hitrosti zraka v bivalni coni oziroma prepih. Obravnavan inovativen sistem pulznega prezračevanja omogoča vzpostavitev boljših razmer v prostoru, pri zmanjšani rabi energije. Elementi za difuzijo zraka so enostavni pločevinasti perforirani kanali, ki s svojo patentirano tehnologijo ustvarijo visoko stopnjo indukcije prostorskega zraka, s tem pa učinkovito mešanje celotnega zraka v prostoru, brez večjih lokalnih hitrosti zraka, kot smo jih navajeni pri običajnih difuzorjih. Zaradi indukcije prostorskega zraka lahko zmanjšamo tudi količino svežega vtočnega zraka, to pa prinese velike prihranke energije na dovodnem ventilatorju. Kanali za odtok zraka v prostoru niso potrebni, zato se zmanjšajo stroški namestitve, ter zmanjša raba energije na odvodnem ventilatorju, zaradi zmanjšanja tlačnega padca. Sistem pulznega prezračevanja prinese višje investicijske stroške, vendar velike prihranke energije, ki upravičijo vračilno dobo investicije. In large self-service shops, the problem is to maintain the desired parameters of interior comfort. The discussed trade center in Ljubljana is large and has particularly heavy zones with high cooling or heat loads. These loads make it even more difficult to create the desired comfort. They cause temperature non-homogeneity and stratification, and higher air speeds in the living zone and drafts. The innovative system of pulsed ventilation allows to achieve better room conditions, with reduced energy consumption. The elements for air diffusion are simple perforated sheet metal tubes with patented technology, which create a high rate of induction of the ambient air, and establish effectively mixing the whole air in the room, without high local air velocities, as using regular diffusers. Due to the induction of ambient air, the amount of fresh air can also be reduced, which leads to high energy savings on the feed fan. There is no need for exhaust air ducts in the room, which reduces installation costs and reduces the use of energy in the exhaust fan due to a decrease in the pressure drop. The pulse ventilation system brings higher investment costs, but great energy savings that justify the return period on investment. prezračevanje mešalno izpodrivno pulzno stratifikacija prepih hitrost temperatura ventilationmixing displacement pulse stratification draught velocity temperature true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2018-02-06 07:15:10 2018-02-06 07:15:21 2023-10-24 10:44:41 0000-00-00 00:00:00 2018 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 204305 1456.pdf 1456.pdf 1 25F0917C8713AAA4B832AE5052066551 bdc2f4b66f34416f18921dd45e1a5f0d89112f93964c49dd80c157f13d274376 999a7aca-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/c32ca319-7496-44c7-b6eb-1961d3e1f663 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109095 1459.xlsx 1459.xlsx 1 D26DBA940DDBDD337A82D45B1C1601F9 45dfee2e9c8eaf7a36aeb20ba5691933dd8d2f2d8c12d7bbff7e48a6ed7ce6c4 99c5bc0e-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/fb3cbb5d-30e3-4ea1-ae51-9bcb3eb850b1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109098 1460.xlsx 1460.xlsx 1 C10C08988E698A6640E45588AF4B7D16 baa58c70610799280e15dd4fc6bcdb2ebce7e8cd6c706edc34ec4840204ef160 99d664e7-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/2bc1349a-7e81-4b6e-b333-8c53525f6328 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109099 1457.xlsx 1457.xlsx 1 A053946DD123AEB5C29445F972F0AA03 caf29f92ed3448f6d521b8392e2d634ebfde7cc2a4467d196540e62a53d98f21 99a8dc16-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/65bd9bf6-5121-41ec-a14c-6c43fd387034 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109096 1458.xlsx 1458.xlsx 1 D3135EF1EEDD4F15DF64077912888D50 ee7edc439b004480eafd0e7c01ec645a3ca07ae52069189b0fcf8839db117ace 99b71ee0-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/de6df411-f002-44a4-8ff3-7e625ba84456 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109097 Fakulteta za strojništvo 0 0 0