... fuels, it is necessary to explore ways to improve the thermal efficiency and emission characteristics of existing cooking systems. Although the use of gaseous fuels reduces domestic air pollution, the earliest domestic gas burners have low heat performance with an efficiency value of approximately 40...

...Badia Rtimi; Ali Benhmidene; Bechir Chaouachi The efficiency of solar panels decreases gradually with the increase of solar cell temperature. To solve the problem, various researches have been carried out. This article studies the effect of using a cooling system on the useful energy...

...Hwabhin Kwon; Heesung Park Personal mobility devices have drawn growing attention to relieve the congestion of traffic and air pollution. The efficiency of electric motors is significant in terms of energy utilization, driving range, and lifetime of the devices. In this study, a brushless direct...

..., which maximizes the system efficiency. The overall efficiency can be introduced to include hydrodynamic as well as thermal characteristics of nanofluids in various geometrical conditions. For each radius of curvature, the same overall efficiency may be achieved for two magnitudes of nanofluid volume...