Heat transfer surface having a high boiling heat transfer coefficient
阅读：561发布：2022-10-31
专利汇可以提供Heat transfer surface having a high boiling heat transfer coefficient专利检索，专利查询，专利分析的服务。并且A heat transfer surface comprising a heat conductive base member and a plurality of spaced apart fins extending therefrom, each of said fins being bent over towards the next adjacent fin so as to form therebetween elongated, re-entrant cavities. The gap between the tip of one of said fins and the next adjacent fin is sufficiently small to promote and sustain nucleate boiling of a fluid in contact with said fins and said base member.，下面是Heat transfer surface having a high boiling heat transfer coefficient专利的具体信息内容。
1. A heat exchange comprising: a heat conductive base member for transferring heat from a heat source on one side thereof to a boiling fluid on the other side thereof; a plurality of spaced apart fins having substantially smooth and uninterrupted side surfaces extending From said other side of said base member, each of said fins having a base portion joined to said base member and a tip portion, said tip portions being bent over toward the next adjacent one of said fins to form a a continuous gap having a width of from 0.001 to 0.005 inches, the gaps between said tip portions and said next adjacent one of said fins being less than the spaces between said base portions, whereby a continuous reentrant shaped cevity sufficient to promote nucleate boiling of a given liquid is formed between adjacent ones of said fins; said boiling fluid selected from the group of refrigerant fluids consisting of trichloromonofluoromethane, monochlorodifluoromethane, dichlorodifluoromethane, trichlorotrifluoroethane, dichlorotetrafluoroethane and a 48.8/51.2 weight percent azeotropic mixture of monochlorodifluoromethane and monochloropentafluoroethane, respectively.
2. A heat exchanger as defined in claim 1 wherein: said bent fins are of curvilinear cross-section over substantially their entire height.
3. A heat exchanger as defined in claim 1 wherein: said tip portions overlap said base portion of said next adjacent one of said fins by a distance of from one-half to one and one-half times the thickness of one of said fins.
4. A heat exchanger as defined in claim 1 wherein: said boiling fluid comprises trichloromonofluoromethane and said gaps between said tip portions and said next adjacent one of said fins are within a range of from 0.0015 to 0.0035 inches.
5. A heat exchanger as defined in claim 1 wherein: said fins are formed integrally with said base member.
6. A heat exchanger as defined in claim 1 wherein: said tip portions overlap said base portion of said next adjacent fins. 7 In a refrigeration system comprising a compressor, condensor, pressure reducing means and an evaporator of the shell-and-tube type interconnected in refrigerant flow relationship, an improved heat transfer surface for said evaporator comprising: a plurality of tubular members through which a relatively warm fluid to be cooled passes; a plurality of spaced apart fins having substantially smooth and uninterrupted side surfaces extending from each of said tubular members, the outside of said tubular members and said fins being in contact with refrigerant fluid flowing through said evaporator; and each of said fins having a base portion joined to one of said tubular members and a tip portion, each of said tip portions being bent over toward the next adjacent one of said fins to overlap said base portion of said next adjacent one of said fins and being separated therefrom by a gap sufficiently narrow to promote and sustain nucleate boiling of said refrigerant fluid; said boiling fluid selected from the group consisting of trichloromonofluoromethane, monochlorodifuloromethane, dichlorotetrafluoroethane and a 48.8/51.2 weight percent azeotropic mixture of monochlorodifuloromethane and monochloropentafluoroethane, respectively; said gaps between said tip portions and said next adjacent one of said fins being in the range of from 0.001 to 0.005 inches.
8. Apparatus as defined in claim 7 wherein: each of said fins is curved over its entire height towards said next adjacent one of said fins.
9. Apparatus as defined in claim 7 wherein: said refrigerant fluid comprises trichloromonofluoromethane and said gap is between 0.0015 and 0.0035 inches wide.
10. A heat exchanger comprising a plurality of tubes for conducting a relatively warm fluid to be cooled by transferring heat to a boiling fluid surrounding said tubes, helical heat transfer fins on said tubes and extending outwardly from said tube, said helical heat transfer fins having base portions integral with the outer surface of said tube and having substantially smooth and uninterrupted side surfaces and tip portions, said tip portions being bent over toward the next adjacent one of said heat transfer fins, the spAces between said heat transfer fins at their outer ends being less than the spaces between said heat transfer fins at their bases whereby continuous re-entrant shaped cavities are provided to enhance boiling.
11. A heat exchanger as defined in claim 10 wherein the spaces between the fins are of substantially uniform cross-section along substantially the length of the fins.
12. A heat exchanger comprising a plurality of tubes for conducting a relatively warm fluid to be cooled by transferring heat to a boiling fluid surrounding said tubes, helical heat transfer fins on the outer surface of said tubes, said helical fins having base portions integral with the outer surface of said tubes, said fins having substantially smooth and uninterrupted side surfaces and extending outwardly from their base portions to distal portions, the distal portions being curved toward the next adjacent fins, the spaces between the distal portions and the next adjacent fins being less than the spaces between the base portions of the fins whereby substantially continuous re-entrant shaped cavities are provided to enhance boiling.
13. A heat exchanger as defined in claim 12 wherein the spaces between the helical heat transfer fins at their outer ends are substantially uniform in width along substantially the length of the fin.
14. A heat exchanger as defined in claim 12 wherein said helical heat transfer fins are curved in cross-section over substantially their entire height.
15. A heat exchanger comprising a tube for conducting a relatively warm fluid to be cooled by transferring heat to a boiling fluid surrounding said tube, helical heat transfer fins at the outer surface of and substantially co-axially disposed with respect to said tube, said helical fins having base portions integral with the outer surface of said tube, said fins having substantially smooth and uninterrupted side surfaces and extending outwardly from their base portions to distal portions, the distal portions being curved toward one end of the tube and terminating in closely spaced relation with the next adjacent fin to define substantially uniform helical gaps between the distal portions and the next adjacent fins which are substantially less in width than the spaces between the base portions of the fins whereby substantially continuous helically shaped re-entrant cavities are provided to enhance boiling.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种用于透平叶片冷却性能测试的旋转传热实验系统及方法 | 2020-05-08 | 449 |
| 多功能蒸汽冷凝换热及结霜过程可视化实验装置 | 2020-05-12 | 333 |
| 一种液态金属冷却快堆堆芯盒间流数值模拟方法 | 2020-05-08 | 382 |
| 一种恒温式空气冷却器 | 2020-05-11 | 797 |
| 一种基于散热量的风扇电机转速精确控制方法 | 2020-05-11 | 686 |
| 一种模铸下注法浇钢浇铸速度的控制方法 | 2020-05-12 | 405 |
| 一种基于液态金属混合工质的脉动热管 | 2020-05-08 | 373 |
| 一种高速列车用轻量化车窗 | 2020-05-08 | 234 |
| 一种换热器总成及壁挂炉 | 2020-05-11 | 839 |
| 一种用于严寒地区节能保温型变电站建筑 | 2020-05-12 | 556 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
QQ群二维码
意见反馈
意见反馈