Boiling and condensation in a liquid-filled enclosure
A combined experimental and analytical investigation of boiling and condensation in a liquid-filled enclosure, with water and Freon- 113 as the working fluids, is described. The operating characteristics of a boiling system, utilizing a condenser submerged in the fluid, are presented and related to...
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| Format: | Technical Report |
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Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1971]
2011
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| Online Access: | http://hdl.handle.net/1721.1/61446 |
| _version_ | 1811069523016548352 |
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| author | Bar-Cohen Avram Bergles A. E. |
| author2 | Massachusetts Institute of Technology. Division of Sponsored Research. |
| author_facet | Massachusetts Institute of Technology. Division of Sponsored Research. Bar-Cohen Avram Bergles A. E. |
| author_sort | Bar-Cohen Avram |
| collection | MIT |
| description | A combined experimental and analytical investigation of boiling and condensation in a liquid-filled enclosure, with water and Freon- 113 as the working fluids, is described. The operating characteristics of a boiling system, utilizing a condenser submerged in the fluid, are presented and related to specific operational modes and thermal transport mechanisms. A lower bound of operation, corresponding to natural convection heat transfer at both the heated and condenser surfaces, is identified. Similarly, for the commonly encountered range of system operation, a condensive upper bound is identified and shown to correspond to vapor space condensation. A nondimensional vapor bubble collapse length, L c/W, is found to govern the rate and mechanism of heat transfer at the submerged condenser surface. LValues of wC << are associated with natural convection heat transfer at the L c submerged condenser. For -~ I the presence of a substantial vapor frac- w tion in the bulk liquid leads to augmented convection, while for values of L C >> 1 condensation is found to dominate thermal transport at the condenser surface. 4 possible technique for augmenting condensation heat transfer on horizontal surfaces is examined in an attempt to raise the condensive upper bound of submerged condenser operation. A doubly-rippled surface with small, constant radius of curvature undulations is shown to yield a factor of two increases in the rate of vapor space condensation based on the projected area of the condenser surface. |
| first_indexed | 2024-09-23T08:11:46Z |
| format | Technical Report |
| id | mit-1721.1/61446 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:11:46Z |
| publishDate | 2011 |
| publisher | Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1971] |
| record_format | dspace |
| spelling | mit-1721.1/614462019-04-09T17:15:59Z Boiling and condensation in a liquid-filled enclosure Bar-Cohen Avram Bergles A. E. Massachusetts Institute of Technology. Division of Sponsored Research. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Heat Transfer Laboratory. Boiling-points. Condensation. Heat -- Transmission. A combined experimental and analytical investigation of boiling and condensation in a liquid-filled enclosure, with water and Freon- 113 as the working fluids, is described. The operating characteristics of a boiling system, utilizing a condenser submerged in the fluid, are presented and related to specific operational modes and thermal transport mechanisms. A lower bound of operation, corresponding to natural convection heat transfer at both the heated and condenser surfaces, is identified. Similarly, for the commonly encountered range of system operation, a condensive upper bound is identified and shown to correspond to vapor space condensation. A nondimensional vapor bubble collapse length, L c/W, is found to govern the rate and mechanism of heat transfer at the submerged condenser surface. LValues of wC << are associated with natural convection heat transfer at the L c submerged condenser. For -~ I the presence of a substantial vapor frac- w tion in the bulk liquid leads to augmented convection, while for values of L C >> 1 condensation is found to dominate thermal transport at the condenser surface. 4 possible technique for augmenting condensation heat transfer on horizontal surfaces is examined in an attempt to raise the condensive upper bound of submerged condenser operation. A doubly-rippled surface with small, constant radius of curvature undulations is shown to yield a factor of two increases in the rate of vapor space condensation based on the projected area of the condenser surface. (cont.) A systematic design procedure for submerged condenser systems utilizing the proposed models and correlations is described and related to typical design considerations. 2011-03-04T23:26:54Z 2011-03-04T23:26:54Z 1971 Technical Report 14120894 http://hdl.handle.net/1721.1/61446 Technical report (Massachusetts Institute of Technology, Heat Transfer Laboratory) ; no. 73. x, 106 leaves application/pdf Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1971] |
| spellingShingle | Boiling-points. Condensation. Heat -- Transmission. Bar-Cohen Avram Bergles A. E. Boiling and condensation in a liquid-filled enclosure |
| title | Boiling and condensation in a liquid-filled enclosure |
| title_full | Boiling and condensation in a liquid-filled enclosure |
| title_fullStr | Boiling and condensation in a liquid-filled enclosure |
| title_full_unstemmed | Boiling and condensation in a liquid-filled enclosure |
| title_short | Boiling and condensation in a liquid-filled enclosure |
| title_sort | boiling and condensation in a liquid filled enclosure |
| topic | Boiling-points. Condensation. Heat -- Transmission. |
| url | http://hdl.handle.net/1721.1/61446 |
| work_keys_str_mv | AT barcohenavram boilingandcondensationinaliquidfilledenclosure AT berglesae boilingandcondensationinaliquidfilledenclosure |