The elastocaloric subcooling: an innovative approach to improve the energy performances of a transcritical CO [sub] 2 refrigeration system : a Masterʼs thesis of the second-cycle master's study programme in Mechanical Engineering
Rozhok, Anatoliy
Magistrsko delo obravnava možnosti za povečanje energijske učinkovitosti transkritičnih CO [sub] 2 hladilnih sistemov z uporabo elastokaloričnega podhlajevanja in ekspanderja. V ta namen so bile ...zasnovane različne nove konfiguracije hladilnega krožnega procesa in analizirane z novim računalniškim modelom razvitim v programskem paketu Mat- lab. Med tremi različnimi predlaganimi konfiguracijami najvišje izkoristke omogoča rešitev, ki zajema tako ekspander kot elastokalorično podhladitev. Za primer tipičnega delovanja, za katero sta značilni temperatura uparjanja -15 °C in temperatura okolice 35 °C, takšen sistem omogoča 19% povečanje hladilnega števila in 18% povečanje hladilne moči (glede na osnovi sistem). V primeru neposredne ekspanzije, kjer zanemarimo izgube vezane na pretvorbo energij, bi se lahko hladilno število povečalo še za dodatne 3%. Simulacije so pokazale, da so učinkovitosti posameznih elementov, predvsem prenosnikov toplote, elastokaloričnega regeneratorja ter ekspanderja ključnega pomena za izboljšanje delovanja celotnega predlaganega hladilnega sistema.
Type of material - master's thesis
; adult, serious
Publication and manufacture - Ljubljana : [A. Rozhok], 2020
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