한국해양대학교

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냉각수 하단주입시의 Particle Bed Dryout 열유속

DC Field Value Language
dc.contributor.author 김종명 -
dc.date.accessioned 2017-02-22T05:55:47Z -
dc.date.available 2017-02-22T05:55:47Z -
dc.date.issued 2005 -
dc.date.submitted 56823-03-29 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002174732 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/8817 -
dc.description.abstract The objective of the present study is to experimentally investigate the cooling of volumetrically heated particle beds and the enhancement of dryout heat flux in particle beds with coolant flow from below. The experimental facility consists mainly of an induction heater (40 kW, 30 kHz), a quartz-tube test section containing 100 mm in diameter and 300 mm high particle bed, a water circulator and recovery condenser loop. The beads composing the particle bed are in uniform size and two sizes of beads were used -
dc.description.abstract 3.2mm and 4.8 mm. For the top-flooding case, the volumetric dryout heat rate was about 4 MW/m3 in 4.8 mm particle and about 3 MW/m3 in 3.2mm particle bed. For the bottom injection, the volumetric dryout heat rate was about 7.91 MW/m3 in 4.8mm particle at the coolant injection mass flux of 1.5 kg/m2s. In 3.2mm particle, the volumetric dryout heat rate was about 6.5 MW/m3 at the coolant mass flux of 1.0 kg/m2s. It shows the level of enhancement of dryout heat flux in particle beds with the forced coolant flow from below. -
dc.description.tableofcontents ABSTRACT CONTENTS NOMENCLATURE LIST OF TABLES LIST OF FIGURES 1. INTRODUCTION 1 1.1 Background 1 1.2 Research Objectives 2 2. LITERATURE SURVEY 3 2.1 Introduction 3 2.2 Characterization of Porous Media 4 2.3 Dryout Heat Flux in Porous Media 7 2.3.1 Pool boiling in porous media 7 2.3.2 Forced convective boiling in porous 8 2.4 Dryout Heat Flux Models 13 3. EXPERIMENTAL SETUP 36 3.1 Experimental Facility 36 3.1.1 Test porous bed and induction heater 36 3.1.2 Instrumentations 38 3.2 Experimental Procedure 39 3.3 Data Reduction 41 3.3.1 Temperature measurement 41 3.3.2 Heat spatial distribution 41 3.3.3 Calculation of the volumetric power density 42 4. EXPERIMENTAL RESULTS AND DISCUSSIONS 53 4.1 Test Conditions 53 4.2 Effect of Dryout Heat Flux on the Bead Sizes 55 4.3 Effect Dryout Heat Flux on the Mass Fluxes 57 4.4 Implications to the Particle Bed Coolability 58 5. CONCLUSIONS 70 REFERENCES 71 SUMMARY IN KOREAN 74 ACKNOWLEDGEMENT 75 -
dc.language eng -
dc.publisher 한국해양대학교 대학원 -
dc.title 냉각수 하단주입시의 Particle Bed Dryout 열유속 -
dc.title.alternative Dryout Heat Flux in Particle Beds with Forced Coolant Flow from Below -
dc.type Thesis -
dc.date.awarded 2005-02 -
dc.contributor.alternativeName Jong Myung -
dc.contributor.alternativeName Kim -
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냉동공조공학과 > Thesis
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