Performance characteristic of a greenhouse integrated biogas system

Usmani, J. A.; Tiwari, G.N.; Chandra, A.

doi:10.1016/0196-8904(95)00228-6

Cited by 16 publications

(4 citation statements)

References 5 publications

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“…The numerical model the biogas system integrated with solar collectors is presented in [6]. An analytical expression for the instantaneous thermal efficiency of a greenhouse-integrated biogas system and the instantaneous thermal loss efficiency factor from the system for given capacity is described in [7]. For cold climate the temperature of the slurry, the biogas, membrane, wall and cover in function of solar radiation, wind velocity, ambient temperature and digester geometry are important.…”

Section: Introductionmentioning

confidence: 99%

Heat loss analysis in the semi-buried anaerobic digester in Northeast Poland

Rynkowski

2018

E3S Web Conf.

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A thermal model was used to compare an actual and a computational heat losses in an existing the semi-buried anaerobic digester (AD) during the winter season in Northeast Poland. This work is an attempt to answer the question whether the cause of the temperature decrease of the manure AD is underestimated the heat exchanger or its low efficiency. The answer to this question is important for manager to take appropriate action. Understanding the heat loss of biogas digester is important to use these technologies to produce the biogas on assumed level in cold environmentlike winter in Northeast Poland. From anaerobic digester point of view, the maintaining of optimal fermentation temperature is crucial. In the current study 2-D axisymmetric steady heat transfer model was carried out to calculate heat loss of AD for a real biogas plant located in north-eastern Poland and compared with actual state.

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Section: Introductionmentioning

confidence: 99%

Heat loss analysis in the semi-buried anaerobic digester in Northeast Poland

Rynkowski

2018

E3S Web Conf.

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“…Tiwari et al analyzed the energy conservation of a solar‐assisted biogas plant and proposed an improved mathematical model. Usmani et al proposed a model to estimate performance characteristic of a greenhouse‐integrated biogas system. Bala .…”

Section: Introductionmentioning

confidence: 99%

Simulation of a solar-biogas hybrid energy system for heating, fuel supply, and power generation

Wang

Duan

et al. 2017

Int. J. Energy Res.

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Summary Biogas production from organic wastes has been widely utilized for several decades, but maintaining right temperature for anaerobic bacteria is a challenge. In order to overcome the inhibition of the bacteria growth and biogas production due to the low temperature, a solar‐biogas hybrid energy system for heating, fuel supply, and power generation has been proposed for converting domestic garbage into biogas in a rural area of China. In this system, the solar energy has been included as one of the heating sources during an anaerobic digestion process. A mathematical model has been developed to evaluate the influence of system operating characteristics. Based on the simulation results, the biogas production rate, thermal efficiency, temperature of the digester, energy distributions in the system, optimal operating parameters, economic efficiency, and thermodynamic characteristics of the system were analyzed. The impact of solar irradiation on the efficiency of the system was also studied. According to the results, in cloudy days, the reactor volume and solar collector area greatly influenced the steady energy supply. In winter, the produced biogas is mostly utilized by the aided boiler to maintain the proper organic mixture temperature in the bioreactor. Heat loss from bioreactor dramatically increases the organic mixture volume. Per simulation, the longest return on the investment of this type of the biogas system is about 5.54 years, and the shortest return on the investment is less than 4 years if the battery is removed and the electric grid can be used. Therefore, in this study, the feasibility of a hybrid energy system for converting domestic garbage into energy has been validated. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Some studies showed that the combination of solar energy and biogas could produce enormous amounts of energy, economical production, and environmental benefits. Some research shows that the use of solar energy can reduce the period which needed to achieve the optimum temperature for biogas production [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Simulation of New Solar Heating System for Heating Biogas Digesters above Ground in Cold Regions

Hassanein

Qiu

2013

AMM

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The biogas amounts with stable flowing rate require heating in cold weather. This study focuses on using solar energy for heating biogas digester. In this research we used energy plus building energy simulation software and real weather data for simulation the heating of biogas digester with 8760 hours simulation .The research was carried out in two parts: The first one is one biogas digester above ground without heating. The Second part of this study is a simulation of one biogas digester with solar heating by using a new design based on double plastic cover. It has shown that the use of solar energy can achieve the optimum temperature for biogas production process almost the year time. Using double plastic cover is the most suitable method with economic form for heating biogas digester above ground.

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Performance characteristic of a greenhouse integrated biogas system

Cited by 16 publications

References 5 publications

Heat loss analysis in the semi-buried anaerobic digester in Northeast Poland

Heat loss analysis in the semi-buried anaerobic digester in Northeast Poland

Simulation of a solar-biogas hybrid energy system for heating, fuel supply, and power generation

Simulation of New Solar Heating System for Heating Biogas Digesters above Ground in Cold Regions

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