共查询到19条相似文献,搜索用时 140 毫秒
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本文建立了一个冷热电三联供与冰蓄冷耦合的复合系统优化数学模型,以年总运行成本最小为目标函数,综合考虑了经济性、环保性、节能性评价指标对系统的影响。最后以上海某综合型超高层建筑为研究对象,利用LINGO软件进行多目标优化计算,提出了三联供耦合冰蓄冷系统的设备优化容量以及全年运行策略优化方案,并分析了电、气价格及二氧化碳排放税对系统的影响。 相似文献
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区域冷热电联供系统优化设计分析 总被引:3,自引:0,他引:3
研究了以燃气内燃机、燃气锅炉、换热器、吸收式制冷机和压缩式制冷机为主要设备的冷热电联供系统。以满足年度费用最低为优化目标,建立了联供系统的经济优化模型,并以建筑物全年冷、热、电负荷需求作为计算基础,得出了系统优化配置和运行策略。 相似文献
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近期,中国政府颁布一系列政策支持鼓励建筑冷热电三联供系统(BCCHP)推广,要求在制定分布式能源气价时,应体现天然气分布式能源削峰填谷的特点,给予价格折让.目前,中央和地方尚未出台针对建筑冷热电三联供系统的天然气的统一价格.以系统年总费用为目标函数,构建了建筑冷热电三联供系统的经济优化模型,通过LINGO软件对模型求解,获得最合理的系统配置.以上海某超高层商业建筑为研究对象,采用开发的优化模型,分别获得不同天然气价格条件下三联供系统的优化配置和经济参数,探讨天然气价格变化对建筑冷热电三联供系统的设备容量配置、年综合能源利用率及经济性影响,提出合理的适合天然气分布式能源系统的天然气价格. 相似文献
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首先结合建筑负荷和设备性能特性确定了天然气冷热电三联供系统设备组成,然后借助TRNSYS软件对以燃气轮机为动力的天然气冷热电三联供系统进行了建模及仿真,同时对"以热定电"和"以电定热"2种运行模式进行了设备容量计算、动态供能仿真和结果分析.研究发现:在满足区域冷热电负荷的条件下,"以电定热"运行模式下系统一次能源利用率... 相似文献
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利用分析的方法,定义了等效发电效率,对常用热电冷联产系统形式的节能性进行了分析。认为相对于全国平均供电煤耗而言,热电冷联产系统的节能是有条件的,应选取合理的方式,优化设计和运行方案;相对于当前有些热电厂夏季负荷不足的情况,热电冷联产是节能的,在不同的情况下节能率在7.8%~39%之间。建议利用现有的热电联产条件,发展热电冷联产系统,提高现有热电厂的设备利用率和运行经济性。 相似文献
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Analysis and optimization of CCHP systems based on energy, economical, and environmental considerations 总被引:2,自引:0,他引:2
Analysis of combined cooling, heating, and power (CCHP) systems is frequently based on reduction of operating cost without measuring the actual energy use and emissions reduction. CCHP systems can be optimized based on different optimization criterion such as: energy savings, operation cost reduction or minimum environmental impact. In this study, CCHP systems operated following the electric load (FEL) and the thermal load (FTL) strategies are evaluated and optimized based on: primary energy consumption (PEC), operation cost, and carbon dioxide emissions (CDE). This study also includes the analysis and evaluation of an optimized operational strategy in which a CCHP system follows a hybrid electric-thermal load (HETS) during its operation. Results show that CCHP systems operating using any of the optimization criteria have better performance than CCHP systems operating without any optimization criteria. For the evaluated city, the optimum PEC and cost reduction are 7.5% and 4.4%, respectively, for CCHP-FTL, while the optimum CDE reduction is 14.8% for CCHP-FEL. Results also show that the HETS is a good alternative for CCHP systems operation since it gives good reduction of PEC, cost, and CDE. This optimized operation strategy provides a good balance among all the variables considered in this paper. 相似文献
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北京南站冷热电三联供系统探讨 总被引:2,自引:0,他引:2
介绍了北京南站冷热电三联供系统设计,包括方案选择、负荷计算、系统配置、运行策略、节能分析等。认为使用燃气内燃机比燃气轮机更具优势,建议在电力并网前提下采用以电定热原则确定系统设备容量配置。 相似文献
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建立了微型燃气轮机冷热电联供系统数学优化模型。基于上海某办公楼典型日负荷结构,以总运行费用最低为优化目标,采用模式搜索法对数学优化模型进行求解计算,分析了微型燃气轮机发电效率及空燃比对联供系统能耗与CO2排放特性的影响。研究结果表明微型燃气轮机发电效率及空燃比对联供系统能耗与CO2排放的影响趋势是一致的,可以通过调节微型燃气轮机发电效率及空燃比来充分发挥联供系统节能性和环保性的优势。 相似文献
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Combined cooling, heating, and power (CCHP) systems use waste heat from on-site electricity generation to meet the thermal demand of the facility. This paper models a CCHP system for a large office building and examines its primary energy consumption (PEC), operational costs, and carbon dioxide emissions (CDE) with respect to a reference building using conventional technologies. The prime mover used in this investigation is a load share turbine, and the CCHP system is evaluated under three different operation strategies: following the electric demand of the facility, following the thermal demand of the facility, and following a seasonal strategy. For the various strategies, the percentages of total carbon dioxide emissions by source are presented. This paper explores the use of carbon credits to show how the reduction in carbon dioxide emissions that is possible from the CCHP system could translate into economic benefits. In addition, the capital costs available for the CCHP system are determined using the simple payback period. Results indicate that for the evaluated office building located in Chicago the CCHP operation reduces the operational cost, PEC, and CDE from the reference building by an average of 2.6%, 12.1%, and 40.6%, respectively, for all the different operational strategies. 相似文献
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杭州市推广天然气热电冷联供系统的可行性 总被引:1,自引:1,他引:0
分析了杭州市推广天然气热电冷联供系统的气源条件及市场需求,探讨了4种天然气热电冷联供系统的流程。结合工程实例,对天然气热电冷联供的经济性进行了分析。 相似文献