Evaluation of solar aided biomass power generation systems with parabolic trough field  

作　　者：HOU HongJuan YANG YongPing HU Eric SONG JiFeng DONG ChangQing MAO Jian 

机构地区：[1]Beijing Key Laboratory of Safe and Clean Energy Technology, North China Electric Power University, Beijing 102206, China [2]National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China [3]School of Mechanical Engineering, The University of Adelaide SA 5005, Australia

出　　处：《Science China(Technological Sciences)》2011年第6期1455-1461,共7页中国科学（技术科学英文版）

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

摘　　要：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.

关 键 词：solar thermal power biomass power aided 

分 类 号：TM615[电气工程—电力系统及自动化] TM619