Lee Wook-Hyun, Rhee Chang-Kyu, Koo Junemo, Lee Jaekeun, Jang Seok Pil, Choi Stephen Us, Lee Ki-Woong, Bae Hwa-Young, Lee Gyoung-Ja, Kim Chang-Kyu, Hong Sung Wook, Kwon Younghwan, Kim Doohyun, Kim Soo Hyung, Hwang Kyo Sik, Kim Hyun Jin, Ha Hyo Jun, Lee Seung-Hyun, Choi Chul Jin, Lee Ji-Hwan
Mechanical and Industrial Engineering Department, University of Illinois at Chicago, Chicago, IL, USA.
Nanoscale Res Lett. 2011 Mar 25;6(1):258. doi: 10.1186/1556-276X-6-258.
Ethylene glycol (EG)-based zinc oxide (ZnO) nanofluids containing no surfactant have been manufactured by one-step pulsed wire evaporation (PWE) method. Round-robin tests on thermal conductivity measurements of three samples of EG-based ZnO nanofluids have been conducted by five participating labs, four using accurate measurement apparatuses developed in house and one using a commercial device. The results have been compared with several theoretical bounds on the effective thermal conductivity of heterogeneous systems. This study convincingly demonstrates that the large enhancements in the thermal conductivities of EG-based ZnO nanofluids tested are beyond the lower and upper bounds calculated using the models of the Maxwell and Nan et al. with and without the interfacial thermal resistance.
通过一步脉冲线蒸发(PWE)法制备了不含表面活性剂的基于乙二醇(EG)的氧化锌(ZnO)纳米流体。五个参与实验室对三个基于EG的ZnO纳米流体样品进行了热导率测量的循环测试,其中四个实验室使用自行开发的精确测量设备,一个实验室使用商业设备。将结果与多相系统有效热导率的几个理论界限进行了比较。这项研究令人信服地表明,所测试的基于EG的ZnO纳米流体的热导率大幅提高超出了使用麦克斯韦模型和Nan等人的模型计算的有无界面热阻情况下的上下限。