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Energy analysis of a proposed hybrid solar–biomass coffee bean drying system

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  • Manrique, Raiza
  • Vásquez, Daniela
  • Chejne, Farid
  • Pinzón, Andrea

Abstract

A hybrid solar-biomass system for drying coffee beans was developed, combining the combustion of coffee husk pellets with a PV/T system. The energy contribution and efficiency of the combined use of coffee husk pellets and solar energy was analyzed in detail, evaluated at two locations, and compared with the conventional system. The proposed prototype reduced the moisture content of the coffee beans to 12% w. b. with 80% lower operating costs. Over 24-h operation, solar electrical energy and thermal power contributed an average of 9.5% of need and 0.6 kW continuous, respectively, to combustion air preheating. Finally, the use of coffee husk resulted in net zero CO2 emissions from combustion. Further study, evaluating the thermal and electrical performance at higher dryer outputs, using the system at full capacity, is recommended in order to optimize the hybrid system.

Suggested Citation

  • Manrique, Raiza & Vásquez, Daniela & Chejne, Farid & Pinzón, Andrea, 2020. "Energy analysis of a proposed hybrid solar–biomass coffee bean drying system," Energy, Elsevier, vol. 202(C).
  • Handle: RePEc:eee:energy:v:202:y:2020:i:c:s0360544220308276
    DOI: 10.1016/j.energy.2020.117720
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    References listed on IDEAS

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    1. Atalay, Halil & Cankurtaran, Eda, 2021. "Energy, exergy, exergoeconomic and exergo-environmental analyses of a large scale solar dryer with PCM energy storage medium," Energy, Elsevier, vol. 216(C).

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