hladnjače i rashladna tehnika · 2020. 4. 22. · atmosfere e generate via a. meucci 7 39055 l...
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![Page 1: Hladnjače i rashladna tehnika · 2020. 4. 22. · atmosfere e generate via a. meucci 7 39055 l lives (67) italia tel. (0471) 954050/1/2 . telex 400294 'solce-' fax 0471/953575 hojcellì](https://reader035.vdocuments.mx/reader035/viewer/2022071515/613797630ad5d2067648b82d/html5/thumbnails/1.jpg)
Hladnjače i rashladna tehnika
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Izbor lokacije i priprema za gradnju
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Materijali za gradnju
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Hladnjača na sprat
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Obezbijediti dobro zaptivanje i pravilan tok hladnog vazduha
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Racionalno korištenje prostora Za određivanje veličine hladnjače treba
predvidjeti:
V=2,5x(c+z)
V=zapremina hladnjače u m3
C- minimalni broj tona koji se može hladiti u jednom trenutku
Z – maksimalni broj tona koji se može čuvati
Optimalna veličina hladnjače 120-170 tona
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Konstrukcija vrata
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Uređaji za hlađenje
Hladnjača sa direktnim hlađenjem
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Hladnjača sa indirektnim hlađenjem
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Hladnjače sa kontrolisanom atmosferom
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Kontrola atmosfere i pritiska
Kompenzacioni baloni
Generator azota
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Osnovni dijelovi sistema za hlađenje
Kompresor Isparivač Kondenzator Ekspanzivni ventil
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Kompresori
• Klipni kompresor
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Rotacioni kompresor
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Centrifugalni (turbo) kompresori
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Rashladni fluidi freon Najviše dobrih strana, skup
amonijak Toksičan, zapaljiv, jeftin, toplota isparavanja -100C R717
Derivati metana R11-R23
Derivati etana R113-115
Organska jedinjenja R600-700
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Isparivač
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Transportna sredstva hladnjače
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Ekspanzivni ventil
Ručni ventil
Automatski ventil
Termostatski ventil
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Kondenzator
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Princip hlađenja