• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.22 no.7
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• pp.474-481
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• 2010

Because international environmental and energy problems such as global warming and ozone depletion, exhausting of fossil energy sources are more serious than before, renewable energy system is attracting people's attention more and more. Organic waste bioenergy system among a variety of renewable energy system is expected to have an effect on building a society which is eco-friendly and recycles resources owing to carbon neutral effects. So this is considered as the role of an energy source of the building. Previous studies on the organic waste bioenergy are mainly bioenergy technology and activation plan of the bioenergy supply. But the performance evaluation studies of bioenergy systems installed in buildings are rarely. This study is to evaluate applicability of the organic waste bioenergy system as the building energy supply system by energy and environmental, economical analysis.

• Journal of the Korea Organic Resources Recycling Association
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• v.17 no.2
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• pp.37-50
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• 2009

This study was carried out to investigate the integrated biomass strategies for utilization and application characteristics in Hokkaido prefecture, japan. From the results, to achieve a successful operation of biomass recycling facilities, it previously needs the effective byproduct supplying construction system for field demander as well as the advanced environmental technology introduction. Especially, the value-promotion recycling technology were requested as follows; (1) production of functional solid composting for protection soil acidification, (2) the addition of soil microorganism to the production of liquid fermentation fertilizer, (3) construction of diverse energy supply system, (4) mixed organic material fermentation process concerning on heavy metal concentration, (5) introduction of incentive garbage collection system for contaminants prevention.

• Journal of the Korea Organic Resources Recycling Association
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• v.26 no.2
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• pp.95-103
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• 2018

As a guideline for desulfurization and dehumidification pretreatment facility for optimizing utilization of biogas, the $H_2S$ concentration is set at 150 % which can be treated with iron salts, dehumidification is the optimum value for generator operation, and the relative humidity applied at the utilization of biogas in EU is set at 60 %. We have set up the generator facility guidelines to optimize utilization of biogas. The appropriate amount of biogas should be at least 90 % of the total gas generation, and the capacity of generator facility should be set at 20~30 %. In order to equalize the pressure of the incoming gas the generator, a gas equalization tank should be installed and the generator room average temperature should be kept at $45^{\circ}C$ or less. Since the gas is not produced at a certain methane concentration in the digester, the efficiency is lowered. Therefore, it is required to install an air fuel ratio control system according to the change in methane concentration. Therefore, it is necessary to compensate for the disadvantages of biogasification facilities of organic waste resources and optimize utilization of biogas and improve operation of facilities. This study was conducted to optimize biogas utilization of type of organic waste(containing sewage sludge and food waste, animal manure), investigate the facilities problem and propose design, operation guidelines such as pre-treatment facilities and generators.