Application of aluminum oxide nanofluids in diesel electric generator as jacket water coolant

This paper presents a study on nanofluids applications, such as a coolant in a diesel electric generator (DEG). Specific heat measurements of aluminum oxide nanofluid with various particle concentrations have been presented demonstrating a reduction in their values with an increase in the particle concentration and an increase with temperature. Experiments were performed on the DEG to assess the effect of nanofluids on cogeneration efficiency. The investigation showed that applying nanofluids resulted in a reduction of cogeneration efficiency. This is due to the decrease in specific heat, which influences the waste heat recovery from the engine. However, it was found that the efficiency of waste heat recovery heat exchanger increased for nanofluid, due to its superior convective heat transfer coefficient.

[1]  E. Grulke,et al.  Heat transfer properties of nanoparticle-in-fluid dispersions (nanofluids) in laminar flow , 2005 .

[2]  S. Phillpot,et al.  THERMAL TRANSPORT IN NANOFLUIDS1 , 2004 .

[3]  Stephen U. S. Choi,et al.  Application of metallic nanoparticle suspensions in advanced cooling systems , 1996 .

[4]  Saeed Zeinali Heris,et al.  Experimental investigation of oxide nanofluids laminar flow convective heat transfer , 2006 .

[5]  Saeed Zeinali Heris,et al.  EXPERIMENTAL INVESTIGATION OF CONVECTIVE HEAT TRANSFER OF AL2O3/WATER NANOFLUID IN CIRCULAR TUBE , 2007 .

[6]  Y. Xuan,et al.  Convective heat transfer and flow characteristics of Cu-water nanofluid , 2002, Science China Technological Sciences.

[7]  Yulong Ding,et al.  Experimental investigation into convective heat transfer of nanofluids at the entrance region under laminar flow conditions , 2004 .

[8]  Nicolas Galanis,et al.  Effect of uncertainties in physical properties on forced convection heat transfer with nanofluids , 2007 .

[9]  Y. Xuan,et al.  Investigation on Convective Heat Transfer and Flow Features of Nanofluids , 2003 .

[10]  N. Galanis,et al.  Heat transfer enhancement by using nanofluids in forced convection flows , 2005 .

[11]  Yulong Ding,et al.  Heat transfer of aqueous suspensions of carbon nanotubes (CNT nanofluids) , 2006 .

[12]  C. T. Nguyen,et al.  Heat transfer enhancement with the use of nanofluids in radial flow cooling systems considering temperature-dependent properties , 2006 .

[13]  J. Buongiorno.  Convective Transport in Nanofluids , 2006 .

[14]  J. Hull,et al.  Nanofluids for Vehicle Thermal Management , 2001 .

[15]  Young I Cho,et al.  HYDRODYNAMIC AND HEAT TRANSFER STUDY OF DISPERSED FLUIDS WITH SUBMICRON METALLIC OXIDE PARTICLES , 1998 .

[16]  Vice President,et al.  AMERICAN SOCIETY OF HEATING, REFRIGERATION AND AIR CONDITIONING ENGINEERS INC. , 2007 .