Applying the Concepts of Efficiency and Effectiveness to Analyze the Influence of the Number of Passes in the Shell and Tubes Condenser Thermal Performance

The work analyzes the influence of number passes in a shell and tubes condenser heat exchanger, with an inlet pressure R134a refrigerant equal to 1.2 MPa. fluid that circulates is water or water-based nanofluid fraction aluminum oxide nanoparticles (Al2O3), methodology used subdivides exchanger into three distinct regions: overheated region, saturated subcooled region. main parameters analyze thermal performance were efficiency effectiveness. Efficiency superheated steam region close 1.0. There scope for increasing effectiveness, which can be improved more significant tube. process efficient lower mass flow rates tube, but it ineffective. However, highly effective high rates. ample effectiveness Still, temperature pipe are limiting factors greater exchange