000			03380nam a2200133Ia 4500
999			_c62675 _d62672
100			_aSayed Azhar Hussain Shah _a15MME02 _aSupervisor Prof. Dr. Liaqat Ali Memon
245		0	_aPotential Performance Analysis of Water Coolant with and Without Additives for Industrial Applications (ME Thesis)
260			_bQUEST
260			_c2018
300			_a51
500			_aABSTRACT Due to continuously increasing temperature of fluid like oi l when passing through the h at exchanger tubes either in parallel flow or counter flow of heat exchanger, it has been observed that the water temperature also be increasing continuously. Therefore heat transfer will be taken place between oil and water coolant through the pipe surface. For such increasing temperature of oil, the efficiency, and life of oil and beat exchanger will continuously be decreasing which may cause the damage of beat exchanger material and the overall efficiency of equipment. In order to avoid such problems, in this study various additives like aluminum oxide (Ah03) and copper oxide (CuO) were mixed with the water for increasing the heat transfer rate between these two fluids. The tests were conducted at both high and low flow conditions and for each flow, parallel and counter flow directions were considered. In this regard, the first test as baseline test was carried out between bot oil and water coolant (without additives or nanoparticles) . From this research , it was found that beat transfer rate was increased continuously when hot oil and water coolant with 3% of nanoparticles were passing through the counter flow, low flow conditions. However, CuO nanoparticles added with water coolant showed more increase in beat transfer rate due to increase in thermal conductivity of copper. However generally at 70°C, counter flow, low flow condition showed more beat transfer rate as compared to 60°C due to the more uniform difference of temperature taking place between hot oil and water coolant. It was also observed that at low flow conditions, the coolant was made to flow at 2 gal/min due to which coolant took more time to absorb heat from hot oil. Therefore more heat transfer was found to be taken place between hot oil and coolant smoothly. Moreover as in counter flow condition, the direction of fluids were different and both fluids were supposed to move in opposite direction therefore more heat transfer was taken place as compared to parallel flow condition. Because in parallel flow condition, non-uniform difference of temperature was maintained therefore, more thermal stress was produced in parallel flow condition as compared to the counter flow condition. Finally, viscosity and density of the collected oil samples were measured with ASTM (American Society for Testing and Materials) method by using Pycnometer and viscometer. From this experiment it was found that small amount of viscosity and density of oil was dropped when 3% of CuO was added with water coolant. As compared to the other work, this work is usually fruitful and most important for the turbine bearing in the industry where heat exchanger exchanges their more heat within maximum possible rate. Also from this work, life and efficiency of oil and heat exchanger may be increased when this work is applied for industrial applications.
700			_aDepartment of Mechanical Engineering
942			_cTHESIS