EXPERIMENTAL INVESTIGATION OF THERMAL AND HYDRAULIC PERFORMANCE OF A PLATE HEAT EXCHANGER USING NANOFLUIDS

Gasketed plate heat exchangers (PHEs) occupy a crucial position in the energy sector due to their effi cient and compact design. A number of studies have focused on making the plate heat exchangers more effi cient and compact, since energy usage increases day by day. Therefore, the idea of utilizing nanofl uids, whose thermophysical properties are better than those of industrial fl uids, have drawn the attention of researchers. An experimental setup was designed and constructed at the TOBB ETU Heat Exchangers Laboratory to investigate the effect of utilizing nanofl uids in a plate heat exchanger. The experiments were performed with three different working fl uids, namely, tap water and 1 and 0.5 wt.% Al₂O₃/water nanofl uids in a hot cycle. For all cases, the fl ow rates were 100–450 L/h, and the experiments were repeated three times for accuracy. As a result of this study, new correlations for the Nusselt number and heat transfer enhancement rates were obtained. Moreover, the friction factor correlations were found for all cases, and the effect of nanofl uids on the pressure drop has been revealed.
   
Author:  U. Kayabaşı, S. Kakaç, S. Aradag, and A. Pramuanjaroenkij
Keywords:  nanofl uids, gasketed plate heat exchanger, experimental study, heat transfer
Page:  783