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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국신재생에너지학회 신·재생에너지 신재생에너지 제5권 제2호
발행연도
2009.6
수록면
15 - 24 (10page)

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As new small scale LFG (landfill gas) energy project model which can improve economic feasibility limited due to the economy of scale, LFG-Microturbine combined heat and power system with CO₂ fertilization into greenhouses was proposed and investigated including basic design process prior to the system installation at Gwang-ju metro sanitary landfill. The system features CH₄ enrichment for stable microturbine operation, reduction of compressor power consumption and low CO emission, and CO₂ supplement into greenhouse for enhancement plant growth. From many other researches, high CO₂ concentration was found to enhance CO₂ assimilation (also known as photosynthesis reaction) which converts CO₂ and H₂O to sugar using light energy. For small scale landfills which produce LFG under 3;m³/min, among currently available prime movers, microturbine is the most suitable power generation system and its low electric efficiency can be improved with heat recovery. Besides, since its exhaust gas contains very low level of harmful contaminants to plant growth such as NOx, CO and SOx, microturbine exhaust gas is a suitable and economically advantageous CO₂ source for CO₂ fertilization in greenhouse. The LFG-Microturbine combined heat and power generation system with CO₂ fertilization into greenhouse gas to enhance plant growth is technologically and economically feasible and improves economical feasibility compared to other small scale LFG energy project model.

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