Experimental Investigation of Heat Transfer Rate for Automobiles Using Natural Preservative

Abstract

The heat transfer enhancement for car radiator by adding solid nanoparticles to liquid is significant topics recently. The nanomaterials have high heat transfer rate. Most of the researches have been conducted using nanoparticles alone in the radiator. But the cost of nano sized particle is very high. Also the characterization of nanoparticles is difficult and time consuming. It is the right time to have an alternative materials rather than using nanoparticles in the car radiator. So that a different type additive is tried to add with base fluid for further improvement of heat transfer. The lemon juice is traditionally one of the best cooling medium. Accordingly an attempt is made by adding lemon juice (natural) as an additional fluid with base fluid. in the car radiator. Then it is planned to mix the lemon juice in the car radiator and conducting the experiments. By varying different input temperatures and mass flow rate the experimental is done. This research included the heat transfer rate by forced convection. The juice which is extracted from naturally available lemon and dispersed in the base fluid as the lemon is easily soluble. The experiment is conducted in a maruthi make Alto car radiator. Two different concentrations of lemon juice in the ratio of 0.5% & and 1.5 % by volume have been added with distilled water. The flow rate has chosen in the range of 10–16 LPM (Litre per minute). The CFD analyses also have done. CFD nanstran software has been used. The experimental results compared with CFD software. The results showed that the heat transfer rate increases by 30% for a volume of 0.5% of lemon juice. The heat transfer rate improves 35% for 1.0% of lemon liquid. It shows that by increasing the lemon juice the heat transfer rate also increases.