Application of Solar Heating System in Biogas Production

Dai, Rong; Chun, Chang; Xu, Zhibin; Liu, Xiaobing; Wang, Zhifeng

doi:10.1007/978-3-540-75997-3_184

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…The simulations suggest when ambient air temperature is 10°C, 5°C and 0°C, the heat loss of water increases 12.4%, 22.8% and 33.2% respectively compared to the average ambient air temperature is 15°C after natural cooling process of 24 hours. The values of the corresponding heat loss are 110 W, 120 W and 131 W separately [19,20]. When the paraffin layer is completely in solid state, the heat loss from water increase to 125 W, it shows that the phase change insulation closure can reduce heat loss effectively.…”

Section: Resultsmentioning

confidence: 99%

Experimental Study of a Thermal Storage Technique with Phase Change Material Closure for Solar-Biogas Hybrid Fermentation System

Lü¹,

Lu²

2016

Ferment Technol

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It is a key energy policy in China that developing biogas technology is to crack energy short problem in its rural areas. A pilot water thermal storage tank with phase change material insulation closure was developed to collect the daily solar energy for satisfying the heat loading required by biogas fermentation tank which should keep at about 35°C optimum efficient fermentation temperature in each winter day. The thermal performance of the water thermal storage tank was investigated under the different typical local winter air temperatures of 10°C, 5°C and 0°C. Both the numerical and experimental data demonstrate that the phase change material paraffin layer improves the thermal storage time of the tank effectively. This suggests that the proposed water thermal storage tank with phase change material insulation closure could be a promising heat storage device utilized towards solar-biogas hybrid system in rural regions of the middle and lower reaches of Yangtze river.

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Section: Resultsmentioning

confidence: 99%

Experimental Study of a Thermal Storage Technique with Phase Change Material Closure for Solar-Biogas Hybrid Fermentation System

Lü¹,

Lu²

2016

Ferment Technol

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“…They added that the recent studies in Turkey have shown active heat transfer from solar collectors can reduce biogas used for heat requirements to 7% from 26% of total gas produced. A solar heating system was proposed by Dai and Chun (2007) with evacuated tubes with auxiliary electric heater to provide thermal energy for bioreactor. They proposed a system of solar collector combined with heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Solar Energy for Improving Biogas Production From Farm Digesters

Youssef

EL-bakhashwan

2015

Journal of Soil Sciences and Agricultural Engineering

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A solar water heater system has been built and installed at a farm scale operated digester of dairy cows wastes. The solar heating system (solar collectors and storage tank) is connected to a heat exchanger situated inside the digester in order to provide and maintain the wastes temperature at the mesophilic temperature range (37 o C ± 2). Over sixty one days the solar heating system collected 3135 kWh of heat energy. The obtained results showed that, the contribution percentages of the solar heating system were 65.30 and 51.61% and the error root mean square in predicting the digester temperature was 1.66 and 1.83 o C in cold winter months November and December, respectively. While the total biogas production rate and net energy production were increased by 71.4% and 24.1%, respectively.

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Thermal and Electrical Analysis of N-PVT-FPC Hybrid Active Heating of Biogas Plant

Tiwari,

Singh,

Sinha

2023

Journal of Thermal Science and Engineering Applications

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In order to increase biogas production during winter months/cold climatic conditions, a self-sustained N-photo-voltaic thermal and flat plate collectors (PVT-FPC) hybrid active heating biogas plant has been analyzed in terms of thermal energy and electrical energy. A general analytical expression for thermal and electrical energy of biogas plant has been derived as a function of climatic and design parameters from one order coupled differential equations. Various photo-voltaic thermal and flat plate collectors (N-PVT-FPC) configurations have been considered for optimizing maximum electrical and thermal energy gain for a given total number of N-PVT-FPC collectors. Based on mathematical computation for Indian cold climatic conditions, it has been found that the photo-voltaic thermal and flat plate collectors (N-PVT-FPC) combination is always better than the flat plate collectors-photo-voltaic thermal (N-FPC-PVT) collector for maximum electrical and thermal energy. Overall exergy analysis of hybrid active heating of biogas plant has also been carried out.

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Application of Solar Heating System in Biogas Production

Cited by 3 publications

References 3 publications

Experimental Study of a Thermal Storage Technique with Phase Change Material Closure for Solar-Biogas Hybrid Fermentation System

Experimental Study of a Thermal Storage Technique with Phase Change Material Closure for Solar-Biogas Hybrid Fermentation System

Utilization of Solar Energy for Improving Biogas Production From Farm Digesters

Thermal and Electrical Analysis of N-PVT-FPC Hybrid Active Heating of Biogas Plant

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