Heat transfer enhancement with titanium nitride nanofluid in a shell and tube heat exchanger

Abstract The heat transfer enhancement in shell and tube heat exchanger can be done by adding Nano particles to the base fluid. The heat transfer rate between hot and cold fluid shows increasing sign with low to high mass flow rate.. Mass flow rate can be controlled and monitored with the help of valve fixed to the shell inlet. Comparing volume concentration of Titanium Nitride from low to high heat enhancement lies linearity. As volume concentration rises in base fluid affect the viscosity of exchange fluid in turn friction of contact fluid increases. Increased mass flow rate and heat transfer helps to find efficiency. The result shows for the controlled same flow rate with common inlet temperature transfer rate of nano fluid is slightly higher with water. Efficiency increase for about 7.47% for water to nanofluid. The effectiveness increase for about 36.6% for water to nanofluid. The LMTD increased for about of 33.6°C and heat transfer rate increases for about 0.4879 kW for three concentrations at one flow rate. Rising the mass flow rate of nano fluid inference in increasing heat transfer.</jats:p

Experimental Investigation of Heat Transfer of Concentric Triple Pipe Heat Exchanger Coupled with Blossom Fins.

Abstract The present work describes the principle techniques of industrial importance as it deals with heat transfer analysis of concentric triple pipe heat exchanger employing blossom fins. Findings indicate that the use of fin arrangement is advantageous to enhance the performance of heat exchanger, LMTD, over all heat transfer and effectiveness is found to be increased. The additional fins improve the heat transfer by providing a larger area for heat transfer area per unit length of the exchanger. The net heat transfer, overall heat transfer, efficiency and effectiveness were calculated and compared for all the flow patterns and Counter flow 3 was found to have the best results among the flow patterns with the maximum heat transfer, heat transfer coefficient, efficiency and effectiveness being 1642.09 watts, 1842.07 w/m2k, 0.57896 and 0.73 respectively.</jats:p