Estudo comparativo de desempenho entre um sistema de aquecimento solar por circulação forcada e por termossifao

Abstract

This work presents an e ciency comparative study between a water solar heating system using thermosyphon (or natural circulation) and forced circulation. In order to ve rify each system e ciency, three evaluation metrics are analyzed: heating speed, thermal recharge and total absorbed energy by the system. The relation built from each one of the metrics allowed to visualize the di erences between the circulation methods. A con trol system was developed as well, applied to forced circulation method, and a graphical interface for monitoring and data acquisition.