Experiment Research and Mechanism Analysis on the Thermal Properties of Solar Anaerobic Digester

Abstract:

According to the resource characteristics of Chinas western alpine region, the thermal equilibrium experiment and analysis of solar digester is studied in this paper. Under the simulation conditions, the experiment showed that preheating time of solar digester will be shorter with the heat temperature increasing, and the shortest preheating time is 35 min. At the same time the calculation result showed the effective thermal efficiency in preheating stage is gradually increased from 75.7%, 84.6% to 99.3%. In order to maintain the digester thermostat 860 kJ/m³/h heat should be provided to the digester. The digester temperature can be maintained above 33°C within 10 hours in the case of a low humidity in summer. The auxiliary heat sources and additional insulation layer added to the system should be considered in the case of winter and high humidity day in summer.

• Periodical: Advanced Materials Research (Volumes 724-725)
• Pages: 241-247
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.724-725.241
• Online since: August 2013
• Authors: Li Ying Wang*, Li Hua Lin, Hong Gao, Ling Jia, Rui Tian
• Keywords: Solar Digester, Thermal Efficiency, Thermal Equilibrium

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