生物质与天然气冷热电联供系统的优化研究

发布时间：2018-01-04 08:44

本文关键词：生物质与天然气冷热电联供系统的优化研究　出处：《华北电力大学》2013年硕士论文　论文类型：学位论文

【摘要】：在我国过去三十几年的经济快速发展中，以煤炭为主要能源所造成的环境污染和生态问题已经对我国的可持续发展形成了巨大的压力。国民经济的持续快速发展需要有能源和电力的保障，加上能效以及生态环境等各个方面的压力，这些都对我国的能源结构提出了巨大的要求。本文设计了一种以天然气为辅助驱动能源、生物质能为主要驱动能源，结合生物质能利用和传统冷热电联供系统的生物质与天然气冷热电联供系统。对生物质与天然气冷热电联供系统的模型建立进行了简单的介绍，然后对系统分别进行了热力学分析和节能性分析。热力学分析是从系统的能效评价标准和火用评价标准两方面进行的，能效评价标准主要是分析系统的能效率和一次能源节约率，而火用评价标准则主要是分析系统的火用效率。节能性分析是将冷热电联供系统与分供系统和热电联供冷分供系统的一次能耗进行的比较计算。对生物质与天然气冷热电联供系统进行了优化设计，首先从优化变量、优化目标、约束条件和优化求解四个部分介绍了系统的优化设计步骤，，然后以分供系统为参照对象，以能源、环境、经济和综合效益为目标，对该联供系统的内燃机容量进行了多目标优化，然后采用加权线性法将多目标的优化问题转化为单一目标的优化问题。引入生命周期理论，对生物质与天然气冷热电联供系统在整个生命周期阶段的能耗和向环境排放的污染物进行了生命周期分析，同样是以分供系统为参照对象，分析比较联供系统在能源利用和改善全球变暖、光化学烟雾、酸雨和人体呼吸系统危害几种环境问题上的优越性。
[Abstract]:In the rapid economic development of our country over the past thirty years , the environmental pollution and ecological problems caused by coal as the main energy have formed great pressure on our country ' s sustainable development . The thermodynamic analysis and energy - saving analysis are carried out for the model of biomass and natural gas cooling and heating power supply system . The thermodynamic analysis is carried out from two aspects of energy efficiency evaluation standard and fire evaluation standard of the system . The energy efficiency evaluation standard is mainly to analyze the energy efficiency and primary energy saving rate of the system , and the evaluation standard of energy efficiency is mainly to analyze the fire efficiency of the system . The energy saving analysis is a comparative calculation of the energy consumption of the cold and thermal power supply system and the sub - supply system and the thermal power supply system . The optimization design of biomass and natural gas cooling and heating power supply system is carried out . First , the optimization design steps of the system are introduced from the optimization variables , the optimization objective , the constraint conditions and the optimization solution , then the system is used as the reference object , the capacity of the internal combustion engine of the system is optimized by multi - objective optimization , and then the optimization problem of the multi - target is converted into the optimization problem of a single target by using a weighted linear method . The life cycle theory is introduced to analyze the energy consumption of biomass and natural gas cooling and thermal power supply system in the whole life cycle phase and the pollutants discharged to the environment , and the advantages of the system in energy utilization and global warming , photochemical smog , acid rain and human respiratory system are analyzed .

【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU8

【参考文献】