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Influence of surfac...
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Martinez-Galván, Eduardo
(författare)
Influence of surface roughness on a spray cooling system with R134a. Part II : Film thickness measurements
- Artikel/kapitelEngelska2013
Förlag, utgivningsår, omfång ...
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Elsevier,2013
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-124961
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124961URI
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https://doi.org/10.1016/j.expthermflusci.2013.02.010DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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QC 20130802
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Experimental measurements in a spray cooling test rig were carried out for two different heater surface roughnesses and for two different types of nozzles with the dielectric refrigerant R134a. In this paper, results of the sprayed refrigerant film thickness measurements are presented. The influence of the volumetric flow rate, the surface roughness and the type of nozzle (through the spray parameters) on the total average film thickness is analyzed and discussed. In a companion paper, results of the heat transfer measurements are presented. It has been found that there is a relation between the variations of the average Nusselt number and of the film thickness along the spray cooling boiling curve. The heat transfer regimes along that curve are related not only to a variation in the average Nusselt number but also to changes in the film thickness. The qualitative analysis of those variations served to better understand the heat transfer mechanisms occurring during the spray cooling.
Ämnesord och genrebeteckningar
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Spray cooling
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Surface roughness
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Film thickness measurements
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Carlos Ramos, Juan
(författare)
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Anton, Raul
(författare)
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Khodabandeh, RahmatollahKTH,Tillämpad termodynamik och kylteknik(Swepub:kth)u1t1regb
(författare)
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KTHTillämpad termodynamik och kylteknik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Experimental Thermal and Fluid Science: Elsevier48, s. 73-800894-17771879-2286
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