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通过冰蓄冷技术在某具体项目中的应用,介绍了冰蓄冷空调技术的设计方法、工作原理和控制要求。冰蓄冷空调方案要结合当地电力政策、峰谷段电价差等因素经详细的经济对比进行确定;设计日逐时负荷计算、系统负荷预测能力、完善的自控系统和优化控制模式是冰蓄冷空调安全、经济运行的重要保证。 相似文献
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《建设科技(建设部)》2017,(10)
针对上海某建筑,利用TRNSYS动态仿真软件对该建筑冷负荷进行逐时仿真计算,并利用仿真结果对系统原有冰蓄冷系统控制策略进行优化,提出了优化控制的目标函数和约束方程;进而对比分析了不同月份下优化控制策略与冷机优先控制策略的运行费用,验证了优化控制可以发挥现有系统的潜能,更有效地降低高峰负荷用电量。 相似文献
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文章针对集中式控制架构在暖通空调方面应用存在的问题,提出了1种基于分散控制结构的分布式多目标差分进化改进的粒子群(D-MOPSODE,Decentralized Multi-objective Particle Swarm Optimization Improved by Differential Evolution)优化算法,以冰蓄冷空调系统能耗、运行费用和能耗损失为目标,求解冷机逐时部分负荷率和冰槽供冷比例。提高冷机运行效率科学规划蓄冰量和冷机-冰槽负荷分配,达到冰蓄冷空调系统经济节能的运行效益。西安某大型商场为实验环境进行实例验证,结果表明文章提出的D-MOPSODE算法是1种高效的分布式优化算法,在冰蓄冷空调系统负荷分配问题的求解中能够取得显著的节能效果。相比于传统控制策略和PSO算法,D-MOPSODE算法具有收敛性好,稳定性高,鲁棒性强、求解精度高等优点。 相似文献
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为客观分析冰蓄冷空调系统的适用性,将建筑的设计日逐时冷负荷与冰蓄冷系统的一些特性项关联起来,建立了三个评判冰蓄冷系统适用性的指标项,在一定计算精度的前提下,可以简化方案分析。 相似文献
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An experimental study on performance of digital variable multiple air conditioning system under part load conditions in hot summer and cold winter zone was conducted in this paper. The effects of outdoor air temperature and on-unit ratio on total power consumption in 1 h, hourly heating performance factor or hourly energy efficiency ratio were analyzed by experiments. The variations of hourly heating performance factor (or hourly energy efficiency ratio) and total power consumption in 1 h with part load value under different outdoor air temperature were obtained. The results indicate that digital variable multiple air conditioning system can keep economical and reliable operation under part load conditions. And it is necessary to study the index which may reflect the seasonal energy consumption of digital variable multiple air conditioning system. 相似文献
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The global optimization model for the overall control of air-conditioning system aiming at the minimum energy consumption is developed in this work. The method of decomposition-coordination, which is adept at solving the ultrahigh-dimensional optimization problems, is used for the model solution. Taking one real central air-conditioning system as the case study, the hourly optimal conditions of all equipments in this system on one operation day were simulated by the global optimization model. To examine the validity of decomposition-coordination algorithm, direct-search method (which is admitted to be the most reliable in optimization calculation) is used to make the comparison. It showed that the optimal results obtained by the two methods were essentially the same, but decomposition-coordination method would have much higher calculation efficiency than direct-search method. The energy analysis indicated that the energy saving brought by the global optimization was mainly thanks to the adjustment of pumps and fans rather than that of the chillers. It was believed as well that more energy saving would be achieved under the lower load condition of the system if the globally optimal control scheme were implemented. 相似文献
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以深圳市6栋高层写字楼集中空调系统全年运行数据为依据,分析了写字楼集中空调系统制冷主机逐时输出的冷负荷及年运行能耗,得到了各楼主机全年输出的逐时冷负荷的最大值,分析比较了各大楼的建筑面积、入住率、单位空调面积负荷、单位空调面积空调能耗,并比较了各楼的主机选型方案。 相似文献
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乘客停留时间为地铁车站空调系统设计中人员空调负荷及新风负荷的计算参数,计算时该停留时间一般按静态估计值选取,使得站内逐时人员空调负荷计算结果不精确,特别是用于指导系统调控策略优化时.实地调研了地铁车站乘客运动状况,发现客流高峰期乘客排队等待时间较长,存在站厅和站台的停留时间随客流量及发车间隔明显变化的特征.采用行人仿真... 相似文献
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