Biomass energy would become the most potential renewable energies, for whether wind power or photovoltaic, would be restricted by the nature thus cannot provide stable power, while biomass energy is the only renewable...Biomass energy would become the most potential renewable energies, for whether wind power or photovoltaic, would be restricted by the nature thus cannot provide stable power, while biomass energy is the only renewable energy that can be used in the form of gas, liquid or solid stage, it could replace the fossil energy, lead a positive influence on the control of the greenhouse gases. Across the globe, the biomass produced through photosynthesis is about 200 Gt, or 99 Gtce per year. If 10% of the biomass is utilized, more than 4 Gt of fuel ethanol and other bioenergy products can be produced, equivalent to 4.13 Gt of petroleum consumed by the world in 2014. Therefore, bioenergy can be a feasible alternative to fossil energy.展开更多
Facing the pressure of fossil energy exhaustion and environment pollution, people begin to search for clean and renewable energy to partly substitute fossil energy and realize sustainable development. As the fourth ty...Facing the pressure of fossil energy exhaustion and environment pollution, people begin to search for clean and renewable energy to partly substitute fossil energy and realize sustainable development. As the fourth type of energy, biomass energy has many advantages: wide distribution, large quantity, being renewable, clean, storable and transportable and so on. By adopting thermo-chemical and biochemical technologies, biomass energy can be converted to high quality solid, liquid and gaseous energy products, and provide convenient heat and power energy for human being’s production and daily life. This paper presented the status quo of biomass power generation industry in China and also introduced briefly the future development models.展开更多
The wood-pellet trade between the U.S. （United States） and the EU （European Union） has increased substantially recently. This research analyzes the effects of EU biomass imports from the Southeast U.S. on Southeas...The wood-pellet trade between the U.S. （United States） and the EU （European Union） has increased substantially recently. This research analyzes the effects of EU biomass imports from the Southeast U.S. on Southeast U.S. timber prices, inventories and production and on EU imports of feedstock. The SRTS （sub-regional timber supply model） was used to simulate market responses to changes in woody biomass consumption in the U.S. and the EU between 2008 and 2038. Results indicate that the price of imported wood pellets in the EU is sensitive to future U.S. renewable energy policies, the developments of which are so far uncertain. The analysis indicates that with bioenergy demands, prices increase for U.S. softwood roundwood from 25% to 125% by 2038 depending largely on U.S. domestic policy. Demand increases led to supply responses and increased carbon storage in Southeastern U.S. over time.展开更多
This paper describes an efficient and appropriate use of biomass in Latvian conditions as well as analyzing the current situation, leading to recommendations for rational use of biomass and the full implementation of ...This paper describes an efficient and appropriate use of biomass in Latvian conditions as well as analyzing the current situation, leading to recommendations for rational use of biomass and the full implementation of the Latvian energy sector. In recent year＇s, Latvian energy sector development analysis shows, that there is a positive tendency--an increase of local and renewable energy share of energy balance. The paper will be identified for future development opporttmities, and will undertake an analysis of renewable energy consumption forecasting in accordance with the renewable energy potential assessment, taking into account the effective use of innovative technologies and ecological aspects of the energy sector. Increasing use of biomass for district heating （and cogeneration）, also increase the efficient use ofbiomass in cost efficiency and reducing of GHG emissions. Efficient use of biomass analyzed in the paper, taking into account technical, legislative, institutional/organizational, economic, information and financial aspects. Promoting of the efficient use of biomass will increase national energy independence.展开更多
Solar and biomass are both renewable energy resources.Using biomass as fuel is becoming more and more attractive after governments increase the tariff for the electricity from the renewable sources.However the costs o...Solar and biomass are both renewable energy resources.Using biomass as fuel is becoming more and more attractive after governments increase the tariff for the electricity from the renewable sources.However the costs of power from a biomass power generation plant depend greatly on the availability and quality of the biomass resource.The commercialization of solar alone thermal power generation is hindered by its high initial investment and low thermal efficiency.In this paper,a concept of integrating solar into a biomass power generation system is put forward.In the system the oil heated by a parabolic trough solar field is used to replace the extraction steam to preheat the feed water(entering a biomass boiler) and the previous extraction steam thus saved can continue to do work in the lower stages of turbine.The performance of the hybrid system with different replacements is analyzed and compared through two typical solar aided biomass generating units.The results show that the integration not only reduces the consumption of biomass fuel(at the same generation capacity) but is also proved to be an efficient way to convert solar thermal energy into power.The results also show that with the same solar aperture area,the higher the grade of the replaced extraction steam,the better the thermal performance and economy.展开更多
基金supports from the National Key Technology Support Program (2012BAC18B03, 2014BAC33B01)the National 863 Program (2009AA034901)
文摘Biomass energy would become the most potential renewable energies, for whether wind power or photovoltaic, would be restricted by the nature thus cannot provide stable power, while biomass energy is the only renewable energy that can be used in the form of gas, liquid or solid stage, it could replace the fossil energy, lead a positive influence on the control of the greenhouse gases. Across the globe, the biomass produced through photosynthesis is about 200 Gt, or 99 Gtce per year. If 10% of the biomass is utilized, more than 4 Gt of fuel ethanol and other bioenergy products can be produced, equivalent to 4.13 Gt of petroleum consumed by the world in 2014. Therefore, bioenergy can be a feasible alternative to fossil energy.
基金Technical Supporting Programs funded by Ministry of Science and Technology (MOST) of China(No. 2006BAD07A14 No. 2006BDA11A11)
文摘Facing the pressure of fossil energy exhaustion and environment pollution, people begin to search for clean and renewable energy to partly substitute fossil energy and realize sustainable development. As the fourth type of energy, biomass energy has many advantages: wide distribution, large quantity, being renewable, clean, storable and transportable and so on. By adopting thermo-chemical and biochemical technologies, biomass energy can be converted to high quality solid, liquid and gaseous energy products, and provide convenient heat and power energy for human being’s production and daily life. This paper presented the status quo of biomass power generation industry in China and also introduced briefly the future development models.
文摘The wood-pellet trade between the U.S. （United States） and the EU （European Union） has increased substantially recently. This research analyzes the effects of EU biomass imports from the Southeast U.S. on Southeast U.S. timber prices, inventories and production and on EU imports of feedstock. The SRTS （sub-regional timber supply model） was used to simulate market responses to changes in woody biomass consumption in the U.S. and the EU between 2008 and 2038. Results indicate that the price of imported wood pellets in the EU is sensitive to future U.S. renewable energy policies, the developments of which are so far uncertain. The analysis indicates that with bioenergy demands, prices increase for U.S. softwood roundwood from 25% to 125% by 2038 depending largely on U.S. domestic policy. Demand increases led to supply responses and increased carbon storage in Southeastern U.S. over time.
文摘This paper describes an efficient and appropriate use of biomass in Latvian conditions as well as analyzing the current situation, leading to recommendations for rational use of biomass and the full implementation of the Latvian energy sector. In recent year＇s, Latvian energy sector development analysis shows, that there is a positive tendency--an increase of local and renewable energy share of energy balance. The paper will be identified for future development opporttmities, and will undertake an analysis of renewable energy consumption forecasting in accordance with the renewable energy potential assessment, taking into account the effective use of innovative technologies and ecological aspects of the energy sector. Increasing use of biomass for district heating （and cogeneration）, also increase the efficient use ofbiomass in cost efficiency and reducing of GHG emissions. Efficient use of biomass analyzed in the paper, taking into account technical, legislative, institutional/organizational, economic, information and financial aspects. Promoting of the efficient use of biomass will increase national energy independence.
基金supported by the National Natural Science Foundation of China (Grant Nos 51025624, 51006033)the National Basic Research Program of China ("973" Program) (Grant No 2009CB219801)Foundation of North China Electric Power University
文摘Solar and biomass are both renewable energy resources.Using biomass as fuel is becoming more and more attractive after governments increase the tariff for the electricity from the renewable sources.However the costs of power from a biomass power generation plant depend greatly on the availability and quality of the biomass resource.The commercialization of solar alone thermal power generation is hindered by its high initial investment and low thermal efficiency.In this paper,a concept of integrating solar into a biomass power generation system is put forward.In the system the oil heated by a parabolic trough solar field is used to replace the extraction steam to preheat the feed water(entering a biomass boiler) and the previous extraction steam thus saved can continue to do work in the lower stages of turbine.The performance of the hybrid system with different replacements is analyzed and compared through two typical solar aided biomass generating units.The results show that the integration not only reduces the consumption of biomass fuel(at the same generation capacity) but is also proved to be an efficient way to convert solar thermal energy into power.The results also show that with the same solar aperture area,the higher the grade of the replaced extraction steam,the better the thermal performance and economy.
