毕业论文（设计）槽塔结合并与常规燃煤电厂系统集成特性研究.docxVIP

槽塔结合并与常规燃煤电厂系统集成特性研究Study on the integration characteristics of coal fired power plant integrated with the PTCS and TSCS DUAN Li-Qiang, JIA Shilun, FENG Tao, LI Ruihua(School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China)ABSTRACT In this paper a 1000MW coal-fired power plant integrated with the parabolic trough solar collector system (PTCS) and tower solar collector system (TSCS) is proposed. With the help of Ebsilon Professional and TRNSYS software the simulation results are obtained, moreover, the sensitive analysis of the new system is carried out to analyze the influences of the key parameters on the new system performance. Results show that compared with the benchmark system the thermal efficiency of the new system is increased from 45.09% to 48.08%, and the standard coal consumption reduced from 272.78g/kWh to 255.83g/kWh. What’s more, in the summer solstice day, the average thermal efficiency of the whole day raises to 46.06%, and the average standard coal consumption reduces to 267.19 g/kWh, which will provides a new thought of integration for energy conservation and emissions reduction.KEY WORDS: solar parabolic trough collector system and tower solar collector system, system integration, 1000MW coal-fired power plant, solar energy摘 要 本文利用Ebsilon Professional和TRNSYS软件建立了1000MW火电厂系统和槽式塔式太阳能集热系统组成的集成系统，通过槽式太阳能集热系统（PTCS）集成火电厂高加位置加热给水，塔式太阳能集热系统（TSCS）集成火电厂再热段加热冷再热蒸汽。结果表明：新系统与基准系统相比，在最大集成量下，全场热效率也由基准系统的45.09%提升到了48.08%，煤耗由272.78g/kWh降低到了255.83g/kWh，同时在夏至日全天的平均热效率提高到了46.06%，平均煤耗率降为267.19 g/kWh，为火电厂的节能减排提供了新的集成思路。关键词槽塔结合；系统集成；1000MW火电厂；太阳能0.引言目前，我国的能源消费以煤为主，火力发电厂在我国的发电总装机容量中占据主导地位，在全球倡导CO2减排的背景下，以及化石能源面临枯竭的严峻形势下，对于现有火电厂的节能减排技术的发展意义重大。现有的火电厂节能降耗的潜力正在随着火电厂参数的进一步提高以及发电容量的不断扩大而逐渐减少，此时需要寻求新的技术途径来帮助现有电厂的节能减排。太阳能作为取之不尽的清洁可再生能源，一旦得到合理的利用，不仅有助于降低现有燃煤的消耗量，同时也由于其无污染、零排放的特点有助于缓解减排的压力，同时其作为可再生能源可以有效的解决化石能源枯竭等问题。合理的将太阳能集热系统与火电厂进行集成，是现阶段较为有效的实现火电机组技能的一种途径。太阳能集热系统使太阳能热利用中的关键系统，目前太阳能发电系统具有投资成本高、设备周期短、受天气影响大等一系列问题，所以在集成系统中要