Wetted area of packing materiels in a packed column충전밥 내에서의 충전물의 젖는 면적에 관하여

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 667
  • Download : 0
DC FieldValueLanguage
dc.contributor.advisorLee, Won-Kook-
dc.contributor.advisor이원국-
dc.contributor.authorJu, Dong-Pyo-
dc.contributor.author주동표-
dc.date.accessioned2011-12-13T04:52:05Z-
dc.date.available2011-12-13T04:52:05Z-
dc.date.issued1975-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=61883&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/32139-
dc.description학위논문(석사) - 한국과학기술원 : 화학과, 1975.8, [ [vi], 63 p. ]-
dc.description.abstractWetted area was measured for the four types of packing materials such as Raschig ring, half ring, half square and square. In order to obtain dyed area for the wetted area, paper was pasted on the surface of these packing materials and reddish dye, rhodamine, was added to the water to colour the paper on the surface of these packings. The water tand the air were contacted countercurrently in a 8-cm I. D. packed column. The effects of several variables which affect the wetted area were investigated. The variables investigated were gas flow rate, liquid flow rate, viscosity and surface tension. The experimental results showed that gas flow rate had no effect on the wetted area up to loading point, the values of $a_w/w_t$ were same as the value of no gas flow. The results also showed that the wetted area was affected by liquid flow rate and surface tension remarkably for all of the packing materials used. The effect of viscosity was appreciable for half ring, half square and square, but for Raschic ring, its effect was so small that it could be neglected. To generalize the results, dimensional analysis was undertaken with L,$\mu,\sigma,\rho,g$, and $a_t$, and the following correlations were obtained. For Raschig ring; $$\frac{a_w}{a_t} = 1.75 \times 10^1 \Bigg(\frac{L}{a_t\mu} \Bigg)^{0.036} \Bigg( \frac{L^2}{a_t\sigma\rho} \Bigg)^{0.295} \Bigg( \frac{L^2g}{\sigma^2a_{t^3}} \Bigg)^{0.318}$$ For half ring; $$\frac{a_w}{a_t} = 3.456 \times 10^2\Bigg( \frac{L}{a_t\mu} \Bigg)^{0.118} \Bigg( \frac{L^2}{a_t\sigma\rho} \Bigg)^{-0.490} \Bigg( \frac{L^3g}{\sigma^2a_{t^3}} \Bigg)^{1.356}$$ For half square; $$\frac{a_w}{a_t} = 2.095 \times 10^2 \Bigg( \frac{L}{a_t\mu} \Bigg)^{0.155} \Bigg( \frac{L^2}{a_t\sigma\rho} \Bigg)^{-0.065} \Bigg( \frac{L^2g}{\sigma^2a_{t^3}} \Bigg)^{0.894}$$ For square; $$\frac{a_w}{a_t} = 1.744 \Bigg( \frac{L}{a_t\mu} \Bigg)^{0.171} \Bigg( \frac{L^2}{a_t\sigma\rho} \Bigg)^{0.126} \Bigg( \frac{L^2g}{\sigma^2a_{t^3}} \Bigg)^{0.400}$$eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.titleWetted area of packing materiels in a packed column-
dc.title.alternative충전밥 내에서의 충전물의 젖는 면적에 관하여-
dc.typeThesis(Master)-
dc.identifier.CNRN61883/325007-
dc.description.department한국과학기술원 : 화학과, -
dc.identifier.uid000731095-
dc.contributor.localauthorLee, Won-Kook-
dc.contributor.localauthor이원국-
Appears in Collection
CH-Theses_Master(석사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0