Effects of different inlet configurations on the performance of solar storage tanks: A three-dimensional unsteady CFD simulation

A validated three-dimensional unsteady computational fluid dynamics analysis is performed in this study to investigate the effects of inlet flow conditions on thermal performance solar storage tanks. First, different mass rates a simple tank (Model 1, single and outlet) are investigated. The results show that higher deteriorate thermocline stratification which desirable. To reduce unfavorable jet mixing with stagnant fluid, divided equally between two ports next model 2). acts better than previous form heat transfer point view. In 3), port replaced by circular truncated cone shaped diffuser momentum impede unwanted tank. aspect ratio analysed at fixed rates. reveal small ratios improve while because strongly adverse pressure gradient occurred inside diffuser, consequently high-speed core flow, contradicts idea employing diffuser. outcomes indicate only 1.0 1.5 have positive effects. final section, continues modifying Model 3 through examining orientations respect horizon 4). Different angels including −30°, −15°, 15°, 30° considered changing orientation not as effective modifications.