PERFORMANCE PREDICTION FOR A TRIANGULAR BUILT-IN-STORAGE-TYPE SOLAR WATER-HEATER WITH TRANSPARENT INSULATION

In this paper, the design of a triangular built-in storage-type solar water heater with transparent insulation on the top and sides is studi ed under various operating conditions. The transient performance of th e system is studied by using a finite-difference forward time-step mar ching technique. The thickness of the transparent insulation is also o ptimized for the best performance of the system. The numerical results for mild winter conditions in Delhi show that the system with transpa rent insulation performs better than conventional water heater with mo vable insulation.