14 KB290 KB14 KB199920252000Dimnik, MarjanPoredoš, Alojzštevilka:10letnik:466 stranistr. 697-702ISSN:0039-2480COBISSID:4249627URN:URN:NBN:SI:doc-EYCSQTITslAssociation of Mechanical Engineers and Technicians of Slovenia et al.Zveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikdimenzioniranjehladilne napravehlajenjemoč grelnamoč hladilnanaprave hladilneprocesi hladilniDimenzioniranje in izvedba sodobne dvostopenjske hladilne naprave| Dimensioning and construction of the contemporary two-stage cooling device|In the paper the methodology for the dimensioning and construction of two-stage cooling device, which could operate as a single-stage also, is presented. Emphasis is laid on the calculation of the component parts in comparison with standard single-stage device. Furthermore a construction process, testing and measurements on experimental device, which successfully operates with single- or two stages, are described. At the end it is proofed that in case of higher differencis between evaporation and condensation pressure it is reasonable to deside on two-stage cooling deviceV prispevku je predstavljena metodologija dimenzioniranja in izvedbe dvostopenjske hladilne naprave, ki lahko deluje tudi kot enostopenjska. Poudarjene so posebnosti preračuna sestavnih elementov v primerjavi z običajno enostopenjsko izvedbo. Opisan je postopek izdelave, zagona in meritev na napravi, ki uspešno deluje v eni ali dveh stopnjah. Na koncu je z rezultati meritev dokazana pravilna odločitev za dvostopenjsko izvedbo v primeru večjih razlik tlakov uparjanja in kondenzacijeTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo