Publication: Costs and benefits of using parabolic greenhouse solar dryers for dried herb products in Thailand
Issued Date
2020-01-01
Resource Type
ISSN
21862982
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2-s2.0-85081538224
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Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
International Journal of GEOMATE. Vol.18, No.67 (2020), 96-101
Suggested Citation
Samatcha Krungkaew, Kanokwan Kingphadung, Suphaphat Kwonpongsagoon, Busarakorn Mahayothee Costs and benefits of using parabolic greenhouse solar dryers for dried herb products in Thailand. International Journal of GEOMATE. Vol.18, No.67 (2020), 96-101. doi:10.21660/2020.67.5798 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/53535
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Title
Costs and benefits of using parabolic greenhouse solar dryers for dried herb products in Thailand
Abstract
© Int. J. of GEOMATE. All rights reserved. Parabolic greenhouse solar dryers have been developed to overcome product quality and postharvest loss problems. It uses solar energy, a renewable source of energy. Due to their high investment costs, economic feasibility and the potential of carbon dioxide (CO2) mitigation were investigated. Owners and managers of 17 enterprises, producing several varieties of herb products, investing in different sizes of solar dryers and using various traditional drying methods before investing in solar dryers, were interviewed in depth to create a data set. The net present value (NPV), internal rate of return (IRR), payback period and CO2 mitigation were evaluated. The enterprises with annual production capacities higher than 1,200 kg or the annual revenues higher than solar dryer investment costs tended to have positive NPV indicating that the investments were attractive. Most enterprises showing CO2 mitigation higher than 130 tCO2e over 15 years had positive NPV. The annual production capacity, annual revenue and the amount of CO2 mitigation could be used to assess investing in greenhouse solar dryers.