中国特种设备安全
中國特種設備安全
중국특충설비안전
CHINA SPECIAL EQUIPMENT SAFETY
2013年
5期
18-20
,共3页
低温绝热管道%漏热量%流量计测量法%表面温度测量法
低溫絕熱管道%漏熱量%流量計測量法%錶麵溫度測量法
저온절열관도%루열량%류량계측량법%표면온도측량법
Low-temperature insulation cryogenic tube%Heat-leak rate%Method of evaporation rate%Method of surface temperature
通过对比分析发现：若采用流量计测量法，对于低温绝热管道（特别是管径较小的低温管道)，试验很难达到标准中所要求的测试条件；表面温度测量法则相对来说更适宜低温绝热管道漏热量测量，但对照标准，在数据处理过程中除考虑自然对流换热因素，还应充分考虑辐射换热的影响，否则结果偏差加大。
通過對比分析髮現：若採用流量計測量法，對于低溫絕熱管道（特彆是管徑較小的低溫管道)，試驗很難達到標準中所要求的測試條件；錶麵溫度測量法則相對來說更適宜低溫絕熱管道漏熱量測量，但對照標準，在數據處理過程中除攷慮自然對流換熱因素，還應充分攷慮輻射換熱的影響，否則結果偏差加大。
통과대비분석발현：약채용류량계측량법，대우저온절열관도（특별시관경교소적저온관도)，시험흔난체도표준중소요구적측시조건；표면온도측량법칙상대래설경괄의저온절열관도루열량측량，단대조표준，재수거처리과정중제고필자연대류환열인소，환응충분고필복사환열적영향，부칙결과편차가대。
Through comparative analysis the author found: it is difficult to meet the testing requirement in standard, when using the method of evaporation rate to measure the heat-leak rate of tubes with small diameter. Moreover, the method of surface temperature was proved it's a proper method to testing the heat-leak rate of cryogenic tube, however, during the data processing, the neglect of the radiant heat may lead to much difference with real value.
