20.500.12556/DKUM-37762 DOLOČANJE UČINKOVITOSTI TOPLOTNIH PRENOSNIKOV S POMOČJO EKSERGIJSKIH TOKOV THE DETERMINATION OF ENERGY EFFICIENCY OF HEAT EXCHANGERS ON THE BASIS OF EXERGY FLOWS V programskem jeziku Python sem izdelal model toplotnega prenosnika s plaščem in ravnim snopom cevi. V izračunih je uporabljena metoda e-NTU. Snovne lastnosti medija in brezdimenzijska števila so z interpolacijskimi metodami izračunana v vsaki iteraciji posebej. Z modelom sem preučil dinamični in statični odziv za sisteme voda-voda ter voda-para. Eksergijski in energijski izkoristek prenosnika narašča s številom prelivnih polj, nanj pa vpliva še razmerje kapacitet obeh medijev. Oba izkoristka kot funkciji razmerja kapacitet medsebojno nista sorazmerna. With program language Python a computer model of a tube&shell heat exchanger was created. Calculations are based on e-NTU method. Physical properties of medium and dimensionless numbers are calculated by means of interpolation at each iteration. Model calculates dynamic and static performance of heat exchanger for water-water and water-steam systems. Exergy and energy efficeny of heat exchanger improves with increased number of bafflers and is also influenced by capacity ratio of both media. Both efficencies as functions of capacity ratio are not propotional. prenosnik toplote ε-NTU Python model eksergija entropija energija heat exchanger ε-NTU Python model exergy entropy energy true true false [L. Bevc] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2012-09-10 12:28:47 2012-11-24 17:57:34 2022-04-24 22:05:54 2021-04-18 03:39:17 2012 0 Krško 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.565.9:536.7(043.2) 1024108124 URN:SI:UM:DK:XRVHFSNV UNI_Bevc_Leon_2012.pdf UNI_Bevc_Leon_2012.pdf 1 D1C8FDA17BDAF5A136AFE9226328036D 624abab9b4ee13d6c4c5f6f777d9aa415aea86e521142e856056be45a3292219 53acc56f-7c08-11eb-bb7a-00155d0001ca 20.500.12556/dkum/a7c7f5c2-5eda-4f2e-b411-99aadca337f8 https://dk.um.si/Dokument.php?lang=slv&id=52327 Fakulteta za energetiko 0 0 0