Absorption Heat and Mass Transfer Enhancement in Binary(NH3/H2O)Nanofluids
The objectives of this paper are to examine the effect of nano-particles on the pool type absorption heat transfer enhancement and to find the optimal conditions to design a highly effective compact absorber for NH3/H2O absorption system.The binary nanofluids which means binary mixture with nano-sized particles are tested to apply nanofluids to the absorption system. Al2O3 and carbon nanotube(CNT)particles are added to make the binary nanofluids in the binary mixture of NH3/H2O. The effect of Al2O3 nano-particles and CNT on the absorption performance is studied experimentally.The experimental ranges of the key parameters are 20％ of NH3 concentration,0-0.08％ (volume fraction) of CNT particles, and 0-0.06％(volume fraction) of Al2O3 nanoparticles). For the NH3/H2O nanofluids,the heat transfer rate and absorption rate with 0.02vol％ Al2O3 nano-particles were found to be 28.9％ and 17.8％ higher than those without nano-particles,respectively.It is recommended that the concentration of 0.02vol％ of Al2O3 nano-particles be the best candidate for NH3/H2O absorption performance enhancement in the present conditions. It is expected that this study will give some basic idea to understand the heat and mass transfer enhancement mechanism in multi-components nanofluids.
Jin-ki Lee Mi Yeon Jeong Chan Woo Park Yong Tae Kang
Department of Mechanical Engineering,Kyung Hee University,Kyung Gi 449-701,Korea Department of Mechanical Design Engineering,Chonbuk National University,Deokjin-Dong Jeonju-City Jeo
国际会议
上海
英文
580-585
2008-04-05（万方平台首次上网日期，不代表论文的发表时间）