专利名称：Method for improving the performance of a
cryogenic heat exchanger under frostingconditions
发明人：Tanatsugu, Nobuhiro,Harada, Kenya申请号：EP99112780.4申请日：19990702公开号：EP1045218B1公开日：20031001
摘要：The present invention provides a method for preventing the decrease of theefficiency of heat transfer, caused by frost formation, in a precooler of an air breathingengine. In the precooler, the heat exchanger tube (2) is provided. Into the heat exchangertube (2), liquid hydrogen (12) serving as a coolant is supplied. The main air flow (11) is sentto the precooler via the intake duct (3), and the main air flow (11) which is cooled downthere, is then sent to a compressor of the air breathing engine. Via the nozzle (4)provided in the middle of the intake duct (3), ethanol (13) is mixed into the main air flow(11). Ethanol (13) is carried into the precooler, and condenses together with the watervapor on the surface of the heat exchanger tube (2). A frost layer thus formed has lesscavities and low thermal resistance as compared to that formed when the water vaporcondenses solely. Therefore, the decrease of the performance of the heat exchanger,which is caused by the frost formation, can be prevented.
申请人：DIRECTOR GENERAL OF THE INST O
地址：JP
国籍：JP
代理机构：Reinhard - Skuhra - Weise & Partner
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容