Hladilni sistem za hlajenje sadnega koncentrata : diplomska naloga visokošolskega strokovnega študijskega programa I. stopnje strojništvo
Podbršček, Luka
V diplomskem delu smo obravnavali možnost za zmanjšanje rabe električne energije pri hlajenju živil. Hladilnica, v kateri hladimo živila, ima v notranjosti konstantno temperaturo zraka 5°C. Za ...ohranjanje načrtovane temperature skrbi hladilni sistem s tremi kompresorji s hladivom R404A. V notranjosti prostora je sedem uparjalnikov, razporejenih pod stropom objekta. Kondenzator je na strehi objekta in ga hladimo z okoliškim zrakom. S preračuni smo ugotovili rabo električne energije za letno delovanje hladilnega sistema, s katerim hladimo sadni koncentrat, ki predstavlja 58,5% vseh toplotnih dobitkov. Z višanjem temperature uparjanja hladilnemu sistemu iz -11°C na -3°C smo hladilno število trenutnemu hladivu R404A povišali za 20,4% in s tem znižali stroške obratovanja do 3500% na leto. Učinkovitost hladilnega sistema bi izboljšali z izbiro hladiva R134a, s katerim bi hladilno število povečali za 7,5%.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [L. Podbršček], 2015
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