水道水のマイクロチャンネル内での流動沸騰熱伝達

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/3759
File
Title
水道水のマイクロチャンネル内での流動沸騰熱伝達
Title Alternative
Flow Boiling Heat Transfer of Tap Water in Micro-Channel
Author
氏名 橋詰 健一
ヨミ ハシヅメ ケンイチ
別名 Hashizume Kenichi
氏名 結城 隆洋
ヨミ ユウキ タカヒロ
別名 Yuki Takahiro
Subject
heat transfer
boiling
evaporation
micro-channels
two-phase flow
experiment
NDC
501.26
Abstract

An experiment was conducted to investigate heat transfer characteristics of tap water in micro-channels. The tested channels were rectangular channels with 12mm breadth. They were a straight channel and two curved channels having a curvature radius of 64mm and 32mm, and the channel height was changed from 1.0mmt to 3.0mm. The experimental results can be summarized as follows. 1) Heat transfer coefficient in a subcooled region increases rapidly with decreasing the degree of subcooling. 2) Heat transfer coefficient in a saturated region first decreases and then turns to increase. 3) Heat transfer coefficient in a saturated region increases with decreasing heat flux and increasing mass flux for all experimental conditions. 4) Heat transfer coefficient in a curved channel is smaller than that in a straight channel having the same channel height for narrower channels, but this tendency is reversed for higher channels. 5) Dryout occurs with smaller vapor quality with smaller channel height smaller curvature radius, smaller mass flux and larger heat flux.

Journal Title
広島工業大学紀要. 研究編
Volume
41
Spage
19
Epage
26
Published Date
2007
Publisher
広島工業大学
ISSN
13469975
NCID
AA11599110
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Old URI
Set
it-hiroshima