SiO_2-DW纳米流体重力热管传热性能试验研究  

Heat transfer characteristics of SiO_2-DW nanofluid gravity heat pipe

作　　者：陆鑫[1] 杨峻[1] 

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《现代化工》2015年第11期145-147,共3页Modern Chemical Industry

摘　　要：采用超声波细胞破碎仪制备了不同质量分数的SiO2-DW纳米流体，并以SiO2-DW纳米流体为工质在碳钢重力热管中进行了传热性能试验研究。结果表明，工质为质量分数1％SiO2-DW纳米流体的重力热管总传热系数比去离子水高5．6％～9．6％，传热性能增强。纳米流体热管平稳运行时，管壁温度低，分布平缓。以质量分数1％的SiO2-DW纳米流体为工质的重力热管换热器，总换热系数较普通水工质热管换热器提高1．63％～1．70％。Different mass fraction of SiO2-water nanofluids are prepared by ultrasonic cell disrupter. The type of gravity heat pipe is prepared and investigated using the nanofluid as the work liquid and the carbon steel pipe as material. The results show that the thermal conductivity of the lwt% SiO2-water nanofluid is 5.6% -9. 6% higher than that of the base fluid water. The wall temperature of gravity heat pipe is lower and more gently. The total heat transfer coefficient of gas-gas heat pipe exchanger improves 1.63 - 1.70% with lwt% SiO2-water in comparison with water.

关 键 词：重力热管 SiO2-DW纳米流体 传热特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]