寒冷地区冬季热电联供系统性能分析与优化

Performance analysis and optimization of winter thermoelectric joint supply system in cold area

热电联供系统可提高系统运行的可靠性,可以稳定连续的为用户提供热能,但是存在系统使用效率低,能源利用率低等问题,而且对该系统的潜力分析和优化方案还没有人进行深入研究,所以在这一方面开展相关研究非常必要。通过对寒冷地区冬季建筑物耗热量建立理论模型,分析计算热电联供系统配置,并且在中国西北部寒冷地区供暖季建立该热电联供系统,作为研究对象进行试验验证。试验数据处理分析表明,环境因素是影响系统供暖性能的主要因素。针对已经存在的问题提出优化解决方案,充分利用多产的电能延长系统运行时间,提高能源使用效率,优化后系统供暖保证率可提高7.01%。

The CHP system improves the reliability of the system and can steadily provide thermal energy to users.However,there are problems such as low efficiencyduring use of the system and low energy utilization.Moreover,no one has conducted in-depth research on the potential analysis and optimization of the system,so it is necessary to carry out relevant research in this area.We established a theoretical model of the user＇s winter energy demand,analyzed and calculated the configuration of the CHP supply system,and established the CHP supply system in the cold heating season in northwestern China,and tested it as a research object.The experimental data processing analysis found that environmental factors affecting the heating performance of the system are the main factors affecting the production capacity of the system.According to the existing problems,the optimal solution is put forward,and the system running time is extended and the energy efficiency is improved.After the optimization,the system heating guarantee rate can be increased by 7.01%.The combined heat and power supply system is effective and economical in cold areas,which is beneficial to environmental protection and has the value of promoting its use.