【摘要】 在去离子水中分别添加了单壁、多壁碳纳米管材料,通过配比一定质量的亲水性分散剂,经超声波振荡试制了水基碳纳米流体。测试分析了不同碳纳米管材料质量分数下的纳米流体热导率和动力粘度等重要热物性参数。测试结果表明:碳纳米管粒子能够强化基液工质导热性能,随着其质量分数的增加,水基单壁、多壁碳纳米流体热导率均明显提高;单壁碳纳米流体粘度显著增加,多壁碳纳米流体粘度无明显变化,多壁碳管更适用于纳米流体强化传热。更多还原

【Abstract】 By ultrasonic vibration,the carbon-water nanofluids were made from the carbon nanotubes and a certain proportional dispersant in deionized water.Comparing with thermal conductivity and dynamic viscosity,the effects of the mass fraction were analyzed.The test results indicate that the thermal conductivity of multi-wall and single-wall carbon nanofluids are improved with the increasing of carbon particles concentration,but compared with multi-wall carbon nanofluids,the viscosity of single-wall carbon nanofluids greatly increases.Based on the measured results,the multi-wall carbon would be more applicable to heat transfer enhancement.更多还原