Detail publikace

experimentálnáí technika pro měření přenosu tepla na rychle se pohybujích površích

POHANKA, M. BELLEROVÁ, H. RAUDENSKÝ, M.

Český název

experimentálnáí technika pro měření přenosu tepla na rychle se pohybujích površích

Anglický název

Experimental Technique for Heat Transfer Measurements on Fast Moving Sprayed Surfaces

Typ

článek v časopise - ostatní, Jost

Jazyk

en

Originální abstrakt

Experimental technique for the measurements of heat transfer distribution at spray cooled surfaces is described. The measurements were done at moving surfaces up to a velocity of 12 m/s. The samples of different cross sections (flat, profile, rail, etc.) can move linearly. Different approaches are used for the measurements of heat transfer coefficient (HTC) distribution or heat flux distribution at rotating cylindrical body. The results of HTC distribution for spray cooling are shown and are compared to water impingement density. Influence of water impingement density, water pressure, spray configuration and surface velocity is studied. Examples for water nozzles and for mist nozzles (water-air) are given. Emulsions and oils are beneficial for some industrial applications of spray cooling. The cooling experiments performed with these liquids provide information about decrease of cooling intensity even for a low concentration of the oils in water. The results comparing the cooling properties of these liquids and their comparison to water are presented.

Český abstrakt

Experimentální technika měření distribuce přenosu tepla na površích chlazených ostřikem je prezentována. Měření byla uskutečněna na pohybujících se površích až do rychlosti 12m/s.Emulze a oleje jsou výhodné pro některé průmyslové aplikace u chlazení ostřikem. Výsledky, které srovnávají chladící vlastnosti těchto tekutin a jejich porovnání s vodou jsou zde prezentovány.

Anglický abstrakt

Experimental technique for the measurements of heat transfer distribution at spray cooled surfaces is described. The measurements were done at moving surfaces up to a velocity of 12 m/s. The samples of different cross sections (flat, profile, rail, etc.) can move linearly. Different approaches are used for the measurements of heat transfer coefficient (HTC) distribution or heat flux distribution at rotating cylindrical body. The results of HTC distribution for spray cooling are shown and are compared to water impingement density. Influence of water impingement density, water pressure, spray configuration and surface velocity is studied. Examples for water nozzles and for mist nozzles (water-air) are given. Emulsions and oils are beneficial for some industrial applications of spray cooling. The cooling experiments performed with these liquids provide information about decrease of cooling intensity even for a low concentration of the oils in water. The results comparing the cooling properties of these liquids and their comparison to water are presented.

Klíčová slova česky

přenos tepla, chlazení ostřikem, chladiva

Klíčová slova anglicky

heat transfer, spray cooling, coolants

Rok RIV

2009

Vydáno

16.05.2009

Nakladatel

Journal of ASTME International

Místo

US

ISSN

1546-962X

Ročník

6

Číslo

4

Strany od–do

1–9

Počet stran

9

BIBTEX


@article{BUT48806,
  author="Michal {Pohanka} and Hana {Bellerová} and Miroslav {Raudenský},
  title="Experimental Technique for Heat Transfer Measurements on Fast Moving Sprayed Surfaces",
  year="2009",
  volume="6",
  number="4",
  month="May",
  pages="1--9",
  publisher="Journal of ASTME International",
  address="US",
  issn="1546-962X"
}