CALEFÓN SOLAR DE BAJO COSTO CON CIRCULACIÓN FORZADA AUTÓNOMA

N. DI LALLA, A. DÍAZ, A. HERNANDEZ

AVANCES EN ENERGIAS RENOVABLES Y MEDIO AMBIENTE

ASOCIACIÓN ARGENTINA DE ENERGÍA SOLAR

Lugar: Salta; Año: 2022

0329-5184

In order to promote self-construction of low-cost thermal converter systems, the results obtained in the design, elaboration and characterization of a forced recirculation solar water heater prototype, are presented. It was sought to obtain a system of simple construction with easily accessible materials to satisfy the hot water demands of a single-family home. The prototype consists a 2m x 2m collector, made with a 100 meters spiral of ¾” low density polyethylene hose. A 110 liters thermal storage hot water tank was built. A 5 W 12 V pump was used, powered by a 5 W mini photovoltaic panel, these produce the recirculation of water between the collector and the tank. On sunny winter days, with the storage hot water tank located outside, the water reached the maximum temperature of 52°C, and the thermal efficiency of the prototype at noon was approximately 36%. Due to the strategy of locating the storage tank inside the house, the hot water cooling rate was an average of 0.47°C/hour, which allowed access to water at 44°C in the morning.