Analiza pretoka zraka in korozije lamelnih prenosnikov toplote v laboratorijskem preizkuševališču

Vučko, Matej (author), Golobič, Iztok (mentor), Kalin, Mitjan (comentor)

V diplomskem delu smo preučevali možnosti za izboljšanje hitrostnih razmer v pravokotnem zračnem kanalu laboratorijskega preizkuševališča. Na osnovi pregleda literature smo analizirali na trgu dosegljiva mrežna satovja in jih vgradili v zračni kanal. Pri tem smo v območju zračnega pretoka med 1000 m3/h in 2000 m3/h eksperimentalno določili hitrostne in temperaturne profile po prečnem preseku kanala pred in za prenosnikom toplote. Nadalje smo obravnavali korozijo na bakrenih ceveh lamelnega prenosnika toplote, ki jih uporabljamo kot hladilnike zraka. S pomočjo analize korodiranih površin na zunanji in notranji strani bakrenih cevi smo določili ključne vplivne parametre, ki povzročajo korozijo bakrenih lamelnih hladilnikov.

• Language: Slovenian
• Keywords: prenosnik toplote, stabilizacija zračnega toka, korozija, meritve
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-96758
• Publication date in RUL: 15.10.2017

Secondary language

• Language: English
• Title: Analysis of air flow and lamella heat exchanger corrosion in the experimental test facility

Abstract

This paper studies the possible improvements in air flow conditions in a rectangular duct with a heat pipe heat exchanger. Based on a review of literature we analysed different plates for air flow stabilisation that are available on the market and embedded them into the air duct. In the process we have experimentally determined velocity and temperature profiles along the cross-section and just behind the heat exchanger. Rate of air flow ranged between 1000 m3/h and 2000 m3/h. Furthermore we discussed the corrosion of lamella heat exchanger copper pipes that are used as air coolers. By analysing the corroded surfaces on the outer and inner sides of copper pipes we determined key parametres that cause corrosion of coppery lamella coolers.

• Keywords: heat exchanger, air flow stabilisation, corrosion, measurements