Performance evaluation of a solar greenhouse dryer for coffee drying in the Peruvian high Andes: an energy, exergy, economic, and environmental approach

Ayala Gonzáles J.R.; Marcelo-Aldana D.; La Madrid Olivares R. · International Journal of Exergy (2026) · DOI: 10.1504/ijex.2026.10077212

Resumen

This study presents an analytical and experimental investigation of a solar greenhouse dryer, designed, constructed and experimentally evaluated for its energy, exergy, economic and environmental, performance in the coffee drying process. Parchment coffee was used, and its humidity was reduced to 11.1% in four days. An exergy efficiency of 40% was obtained, in an approximate range where energy is best utilised between 10 and 14 hours on a drying day. Energy efficiency was also analysed, with an average of 33% during the day, the maximum temperatures of 52.5°C. A payback period of 5.48 years. Copyright

Instituciones: Universidad de Piura