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Performance and CO2 mitigation analysis of a solar greenhouse dryer for coconut drying

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  • S Ayyappan

Abstract

A natural convection solar greenhouse dryer with biomass back-up heater was developed and tested for its performance during summer and winter months under the meteorological conditions of Pollachi, India, using coconuts as drying material. The dryer maintained the temperature between 33°C and 60°C during summer, 26°C and 43°C during winter periods. The biomass heater maintained the temperature inside the dryer between 35°C and 45°C during night. The coconuts were dried from an initial moisture content of 53% to a final moisture content of around 7% in 54 h in summer and 74 h in winter in the solar-biomass hybrid dryer compared to 153 h during summer and 247 h during winter in open sun drying. The thermal efficiency of the solar-biomass hybrid dryer was found to be 24% and 21%, respectively, during summer and winter time. The embodied energy of the dryer is found to be 18,302 kWh and the CO 2 emission was 1518 kg per year. The net CO 2 mitigation is 678 tonnes and the total carbon credit earned is $18,645. The payback period of the drier was found to be 3.3 years.

Suggested Citation

  • S Ayyappan, 2018. "Performance and CO2 mitigation analysis of a solar greenhouse dryer for coconut drying," Energy & Environment, , vol. 29(8), pages 1482-1494, December.
  • Handle: RePEc:sae:engenv:v:29:y:2018:i:8:p:1482-1494
    DOI: 10.1177/0958305X18781891
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    1. Yaovi Ouézou Azouma & Lynn Drigalski & Zdeněk Jegla & Marcus Reppich & Vojtěch Turek & Maximilian Weiß, 2019. "Indirect Convective Solar Drying Process of Pineapples as Part of Circular Economy Strategy," Energies, MDPI, vol. 12(15), pages 1-18, July.

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