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Title:
Termohidravlična analiza obratovanja uparjalnika za ukapljeni naftni plin
Authors:
ID
Bašič, Sani Marko
(
Author
)
ID
Škerget, Leopold
(
Author
)
ID
Hriberšek, Matjaž
(
Author
)
Files:
http://www.dlib.si/details/URN:NBN:SI:doc-BTD9QN53
Language:
Slovenian
Work type:
Not categorized
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Abstract:
Prispevek obravnava analizo obratovanja električnega uparjalnika za ukapljeni naftni plin. Na začetku je podan opis naprave in delovanje v ustaljenih obratovalnih razmerah. Nato je definiran cilj analize in vpeljan navidez osnosimetrični povez uparjalnika. Podane so vodilne enačbe toka newtonovske tekočine v območju sekundarne kapljevine za prenos toplote in toka skozi porozni grelnik. Definirani so robni pogoji na mejah računskega območja. Ločeno so podane osnovne karakteristike enačbe za vrednotenje prenosnih pojavov v posameznih delih uparjalnika. Poseben poudarek je namenjen razmeram konvektivnega uparjanja binarne zmesi v cevni vijačni spirali. Opisan je iterativni računski postopek, s katerim je doseženo končno obratovalno stanje naprave. Na koncu so predstavljeni dobljeni rezultati s komentarjem in sklepi. Za izbrane parametre je obratovalna točka uparjalnika znotraj predpisanih temperaturnih mej.
Publisher:
Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:
2003
Number of pages:
str. 322-345
Numbering:
Letn. 49, št. 6
PID:
20.500.12556/DKUM-53100
UDC:
621.18:665.72:536.24
ISSN on article:
0039-2480
COBISS.SI-ID:
6669083
NUK URN:
URN:SI:UM:DK:CJSUGH2K
Publication date in DKUM:
10.07.2015
Views:
1061
Downloads:
48
Metadata:
Categories:
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Record is a part of a journal
Title:
Strojniški vestnik
Shortened title:
Stroj. vestn.
Publisher:
Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:
0039-2480
COBISS.SI-ID:
762116
Secondary language
Language:
English
Title:
A thermohydraulic analysis of a liquefied-petroleum-gas revaporizer
Abstract:
This paper deals with the thermohydraulic characteristic of an electrical liquefied-petroleum-gas (LPG) revaporizer. To begin with both the revaporizer's description and its working performances are presented. The main goals of the analysis are defined and the quasi-axisymmetrical revaporizer section is introduced. The governing equations for Newtonian fluid flow in the region of the secondary liquid and for flow through a porous heater are presented. The boundary conditions on the computational region boundaries are prescribed. Further basic empirical corelations for the evolution of the transport phenomena within the individual revaporizer zones are presented. Special attention is devoted to the convective boiling process of the binary mixture in helicaly coiled tubes. The iterative calculating procedure with which we finally reached the working state of the device is explained. At the end the achieved results are discussed with comments and conclusions included.The operating point of the revaporizer was to lie inside the prescribed temperature range for the selected combination of process parameters.
Keywords:
heat transfer
,
vaporizers
,
thermohydraulic analysis
,
liquified petroleum gas
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