Experimental investigation of convective heat transfer using Graphene/water nanofluid under laminar flow in shell and tube heat exchanger

Shell and tube heat exchangers are one of the most widely used heat exchangers in refinery industries, petrochemical industries, power plants and steam plants. Water is the most common heat transfer fluid that used in heat exhchangers. Nowadays, by nanotechnological advancements in chemical engineering, nanofluids have attracted much attention of researchers due to it’s enhanced physical characteristics such as high thermal conductivity instead of water. In this research, Graphene/water nanofluid with different concentration of ۰.۰۱, ۰.۰۳ and ۰.۰۶ wt% was used to investigate the heat transfer properties in comparison with distilled water as base fluid. Results showed that the Nusselt number, convective heat transfer coefficient, heat transfer rate, pressure drop and thermal efficiency of nanofluid have improved than base fluid. For example, the thermal efficiency of Graphene/water nanofluid improved by ۸.۸۸% compared to distilled water.

کلیدواژه ها:

Heat transfer ، Nanoparticle ، Nanofluid ، Shell and tube heat exchanger