Numerıcal Examınatıon of Heat Exchanger Shape Effects on Thermal Effıcıency in Aır to Aır Plate Type Heat Recovery Unıt’s

Abstract

Energy needs and consumption in the world is increasing steadily. For this reason, the importance of reducing energy consumption and using energy more efficiently increases day by day. Hence, energy efficiency has great importance both economically and for the protection of nature.Heat recovery device is a system that needs ventilation and can be used to save energy (reduce energy consumption) in all areas of different temperatures (home, office, cinema, shopping mall, conference room, etc.) with the outdoor environment. This device can save a significant amount of energy from heating and cooling processes by transferring heat between the exhaust air and the fresh air.The most widely used type of this device is a plate heat exchanger. In this system, heat transfer is carried out without allowing to blend the egzost air and the fresh air. In this study, the aim is to increase the thermal efficiency of the device. The geometry of the heat exchanger was changed to increase the amount of heat transfer.For this purpose, the current model was created in computer environment and computer simulations were made through the ANSYS-Fluent program. Then the new models with different geometries were created in the computer environment and simulations were made on these models using the same method. The current model and the new models have been compared in terms of thermal efficiency.