Investigation on the heat loss characteristic of underground household biogas digester using dynamic simulations and experiments

Academy of state administration of grain, 2017 AQSIQ, 2003 Axaopoulos, 2001, Simulation and experimental performance of a solar-heated anaerobic digester, Solar Energy, 70, 155, 10.1016/S0038-092X(00)00130-4 Chang, 2014, A time-geographical approach to biogas potential analysis of China, Renewable and Sustainable Energy Reviews, 37, 318, 10.1016/j.rser.2014.05.033 Chen, 1978, Kinetics of methane fermentation, Biotechnology and Bioengineering Symposium, 8, 503 Chen, 2010, Household biogas use in rural China: A study of opportunities and constraints, Renewable and Sustainable Energy Reviews, 14, 545, 10.1016/j.rser.2009.07.019 El-Mashad, 2004, Design of a solar thermophilic anaerobic reactor for small farms, Biosystems Engineering, 87, 345, 10.1016/j.biosystemseng.2003.11.013 El-Mashad, 2004, Effect of temperature and temperature fluctuation on thermophilic anaerobic digestion of cattle manure, Bioresource Technology, 95, 191, 10.1016/j.biortech.2003.07.013 Gauthier, 1997, Numerical simulation of soil heat exchanger-storage systems for greenhouses, Solar Energy, 60, 333, 10.1016/S0038-092X(97)00022-4 Gebremedhin, 2005, Heat transfer model for plug-flow anaerobic digesters, Transactions of the ASAE, 48, 777, 10.13031/2013.18320 Guo, 2010, Dynamic simulation of biogas digester heat loss under certain climate condition, China Biogas, 28, 8 Hashimoto, 1982, Methane from cattle waste: Effects of temperature, hydraulic retention time, and influent substrate concentration on kinetic parameter (k), Biotechnology & Bioengineering, 24, 2039, 10.1002/bit.260240911 Hashimoto, 1979, The overall economics of anaerobic digestion Hassanein, 2015, Simulation and validation of a model for heating underground biogas digesters by solar energy, Ecological Engineering, 82, 336, 10.1016/j.ecoleng.2015.05.010 Herb, 2008, Ground surface temperature simulation for different land covers, Journal of Hydrology, 356, 327, 10.1016/j.jhydrol.2008.04.020 Inalli, 1998, Design parameters for a solar heating system with an underground cylindrical tank, Energy, 23, 1015, 10.1016/S0360-5442(98)00058-9 Jiang, 2011, A review of the biogas industry in China, Energy Policy, 39, 6073, 10.1016/j.enpol.2011.07.007 Liu, 1983, Discussion on effective sky temperature, Acta Energiae Solaris Sinica, 4, 63 Liu, 2010, Quality performance and biogas-producing efficiency of 8 m3 biogas digesters made of glass fiber reinforced plastic, Acta Agriculturae Boreali-Occidentalis Sinica, 19, 197 Lübken, 2007, Modelling the energy balance of an anaerobic digester fed with cattle manure and renewable energy crops, Water Research, 41, 4085, 10.1016/j.watres.2007.05.061 Lu, 2015, Study of solar heated biogas fermentation system with a phase change thermal storage device, Applied Thermal Engineering, 88, 418, 10.1016/j.applthermaleng.2014.12.065 Ministry of Agriculture of the People's Republic of China, 2009 Ministry of Housing and Urban-Rural Construction of the People's Republic of China, 2010 Oosterkamp, 2016, Effect of the choice of boundary conditions on modelling ambient to soil heat transfer near a buried pipeline, Applied Thermal Engineering, 100, 367, 10.1016/j.applthermaleng.2016.01.057 Perrigault, 2012, Towards thermal design optimization of tubular digesters in cold climates: A heat transfer model, Bioresource Technology, 124, 259, 10.1016/j.biortech.2012.08.019 Pham, 2014, Predicting methane production in simple and unheated biogas digesters at low temperatures, Applied Energy, 136, 1, 10.1016/j.apenergy.2014.08.057 Ran, 2012, Classification of commercial biogas digester and comparison with traditional process, China Biogas, 30, 51 Song, 2014, Comparison of biogas development from households and medium and large-scale biogas plants in rural China, Renewable and Sustainable Energy Reviews, 33, 204, 10.1016/j.rser.2014.01.084 Wang, 2007, Experimental study on coefficient of thermal conductivity and specific volume heat of loess, Rock and Soil Mechanics, 28, 655 Wang, 2010, Effect of different heat preservation measures on digester temperature and gas production in northern winter, China Biogas, 28, 31 Wu, 2006, Development of 3-D anaerobic digester heat transfer model for cold weather applications, Transactions of the ASAE, 49, 749, 10.13031/2013.20482 Yang, 2010 Yang, 2014, Analysis of technical bottleneck of household biogas digester, China Biogas, 32, 61 Yang, 2012, Regional differentiation of biogas industrial development in China, Renewable and Sustainable Energy Reviews, 16, 6686, 10.1016/j.rser.2012.07.016 Zhang, 2007 Zhang, 2016, Using a hybrid heating system to increase the biogas production of household digesters in cold areas of China: An experimental study, Applied Thermal Engineering, 103, 1299, 10.1016/j.applthermaleng.2016.05.027 Zhu, 2010