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Title:Zmanjšanje tlačnih izgub v vročevodnih cevnih mrežah
Authors:Krope, Andrej (Author)
Krope, Jurij (Author)
Tičar, Igor (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-UT6B5X7S
 
Language:Slovenian
Work type:Not categorized (r6)
Typology:1.02 - Review Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:V prispevku je predstavljen vpliv kationskih površinsko aktivnih dodatkov na zmanjšanje intenzivnosti turbulence v ceveh primarnih vročevodnih mrež sistemov za daljinsko ogrevanje. Že zelo majhne količine dodatkov vroči vodi, povzroćijo znatno zmanjšanje odpora pri pretoku po ceveh in zato manjše izgube tlaka, kar vodi do manjše potrebne moči črpalk, znižanja črpalnih stroškov, povečanja zmogljivosti, zmanjšanje stroškov plina za ogrevanje vode in zmanjšanje toplotnih izgub. Pri načrtovanju in izgradnji novih vročevodnih mrež lahko uporabljamo cevi z manjšimi premeri in tako znatno znižamo investicijske stroške.
Year of publishing:2000
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 525-531
Numbering:Letn. 46, št. 8
UDC:532.5:621.644:697.4
ISSN on article:0039-2480
COBISS_ID:4087835 New window
NUK URN:URN:SI:UM:DK:DXBB0LEL
Views:546
Downloads:30
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Categories:Misc.
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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 [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:The reduction of friction losses in district-heating pipelines
Abstract:In the paper the impact of cationic surfactant additives on reducing the turbulence in the hot-water pipelines of district heating system is presented. With small ammonts of cationic surfactants in district-heating water the friction losses in pipeline can be reduced significantly. Because of this effect the pressure drops are decreased what leads to reductions in pump energy, pumping costs, costs of gas for heating the supply water, heat losses and to an increase in the heat capacity. New district-heating networks can be designed with smaller pipe diameters and so investment costs can be reduced significantly by applying friction-reducing additives.
Keywords:fluid flow, pressure drops, additives, heating pipelines


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