Performance of a Passive Mixed-Mode Solar Dryer in Owerri, Nigeria

Abstract

This manuscript delineates the architectural framework and empirically assessed efficacy of a passive mixed-mode solar dryer fabricated from readily accessible materials in Owerri. The apparatus encompasses a solar collector and drying chambers. Empirical evaluations were undertaken in March 2019. Results indicated maximum temperatures of 51°C were attained within the solar dryer, while thermal efficiency and dryer efficiency were computed at 57.38% and 43.40%, respectively. The drying chamber exhibited enhanced drying efficiency compared to conventional open-air drying techniques. Apex drying efficiencies of 21.28%, 37.33%, and 14.48% were ascertained for yam, plantain, and pepper, respectively.