• 신재생에너지
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• 제8권4호
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• pp.21-29
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• 2012

The extensible supply of New & Renewable energy resources desperately needs to counter the high dependence on imported energy, recent high oil prices and the Climate Change Conference, and the government has operated the 'Renewable Portfolio Standard' (RPS) as one of the renewable energy policy from 2012. By analyzing the operation case of combined heat and power plant using the woodchip biomass, we drew the price of wood chip fuel, plant capacity factor, electricity selling price, heat selling price and LCOE value. After analyzing the economic feasibility of 3MWe combined heat and power plant based on the operating performance, the minimum of economic feasibility has appeared to be secured according to the internal rate of return (IRR) is 6.34% and the net present value (NPV) is 3.6 billion won as of 20 years life time after installation, and after analyzing the cases of the economic feasibility of the price of wood chip, plant capacity factor, electricity and heat selling price are changed, the economic feasibility is valuable when the price of wood chip is over 64,000 won/ton, NPV is minus, and the capacity factor is above 46.9%, the electricity selling price is 116 won/kWh and the heat selling price is above 75,600 won/Gcal. When going over the new installation hereafter, we need the detailed review of the woodchip storage and woodchip feeding system rather than the steam-turbine and boiler which have been inspected many times, the reason why is it's hard to secure the suitable quality (constant size) of woodchip by the lack of understanding about it as a fuel because of the domestic poor condition and the calorific value of woodchip is seriously volatile compared with other fuels.

• 에너지공학
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• 제23권1호
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• pp.7-20
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• 2014

본 연구에서는 전국적으로 48만ha에 걸쳐 연료림으로 조성되어 있는 리기다소나무를 에너지연료로 활용하기 위해 최적의 생산시스템을 개발하고 이에 따른 공급가격과 전기 열 판매가격 및 이용률 등을 고려한 우드칩 연료한계가격을 산출하였으며 다양한 시나리오에 따른 경제성 민감도 분석을 수행하였다. 열 및 발전 전용시설에서의 경제성을 결정짓는 가장 중요한 변수는 연료공급가격이다. 열 전용시설에서는 본 연구에서 제안된 모든 생산시스템에서 생산되는 우드칩 연료의 활용이 가능하며 발전 전용시설에서는 생산비가 가장 높은 연료사용에는 일부 한계가 있으나 전기 판매가격이 현재의 SMP(pitch pine : 계통한계가격)보다 높아지거나 이용률이 80%이상으로 되는 경우 모두 활용 가능한 것으로 분석되었으며, 더욱이 RPS제도 시행에 따른 신재생에너지 인증서(REC:Renewable Energy Certificate)편익과 온실가스 절감효과로 CDM(Clean Development Mechanism)편익 등을 고려할 경우 충분히 활용 가능한 것으로 분석되었다. 따라서, 국내 발전부문에서의 RPS 공급의무율 이행을 위해서 산림 바이오매스의 활용이 적극 권장된다.

• 펄프종이기술
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• 제43권3호
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• pp.128-136
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• 2011

In order to investigate the relationship between the prices of wood chips and pulps, regression analysis and cointegration test were conducted. Test results indicated that pulp producers adjusted pulp price in response to the change in wood-chip price and there were a long-run relationship between these prices. This implied that by raising the selling price of pulp, pulp producers avoid profit loss incurred by the increase in the wood-chip price. The existence of cointegration between wood chips and pulp prices implied that pulp producers were competing when they set the selling price of pulp.