This paper addresses the planning problem of residential micro combined heat and power (micro-CHP) systems (including micro-generation units, auxiliary boilers, and thermal storage tanks) considering the associated te...This paper addresses the planning problem of residential micro combined heat and power (micro-CHP) systems (including micro-generation units, auxiliary boilers, and thermal storage tanks) considering the associated technical and economic factors. Since the accurate values of the thermal and electrical loads of this system cannot be exactly predicted for the planning horizon, the thermal and electrical load uncertainties are modeled using a two-stage adaptive robust optimization method based on a polyhedral uncertainty set. A solution method, which is composed of column-and-constraint generation (C&CG) algorithm and block coordinate descent (BCD) method, is proposed to efficiently solve this adaptive robust optimization model. Numerical results from a practical case study show the effective performance of the proposed adaptive robust model for residential micro-CHP planning and its solution method.展开更多
微型热电联供(micro-combined heat and power,micro-CHP)有利于提高能效和保护环境,是建筑供能发展的方向之一.规划阶段micro-CHP方案评价是项目成功的关键步骤.为了使方案的区间数指标可以应用于逼近理想解的排序(technique for order...微型热电联供(micro-combined heat and power,micro-CHP)有利于提高能效和保护环境,是建筑供能发展的方向之一.规划阶段micro-CHP方案评价是项目成功的关键步骤.为了使方案的区间数指标可以应用于逼近理想解的排序(technique for order preference by similarity to an ideal solution,TOPSIS),首先用理想解区间计算距离范围、相对接近程度;然后定义可接受函数对方案进行排序.通过适用于小型建筑的4种方案为例验证了该方法的可行性和适用性.展开更多
分别考察了广州典型家庭在使用4种不同技术的微型热电联产产品(Ene-Farm、Ene-Farm Type S、Ecowill、Whisper Gen)时的运行成本与碳减排效果,并分析电价、气价变化对运行成本的影响。结果表明,Ene-Farm的运行成本最低,经济节约指数达14...分别考察了广州典型家庭在使用4种不同技术的微型热电联产产品(Ene-Farm、Ene-Farm Type S、Ecowill、Whisper Gen)时的运行成本与碳减排效果,并分析电价、气价变化对运行成本的影响。结果表明,Ene-Farm的运行成本最低,经济节约指数达14.8%,Ene-Farm Type S的碳减排效果最好,二氧化碳减排指数达37.3%。灵敏度分析表明,微型热电联产系统的运行成本随着电价的升高、气价的降低而降低。展开更多
以热电联供(Combined Heat and Power,CHP)为基础的多能源微电网包含多种形式的能源流。各类型能源流耦合运行,以提高能源利用效率。在此基础上,对多能源微电网进行科学的运行规划,可有效兼顾经济性和环保特性。基于上述考虑,文中在多...以热电联供(Combined Heat and Power,CHP)为基础的多能源微电网包含多种形式的能源流。各类型能源流耦合运行,以提高能源利用效率。在此基础上,对多能源微电网进行科学的运行规划,可有效兼顾经济性和环保特性。基于上述考虑,文中在多能源微电网中加入各类需求侧响应手段,提出一种考虑各种需求侧热-电协同响应的多目标优化规划方法。所提模型目标函数包括微电网运行经济性指标和环保特性指标,即:碳排放指标。结果表明,接入各类需求侧响应手段的热-电协同响应可有效降低热-电微电网所需的燃气锅炉和储热罐容量,提高系统的经济效益和环保效益。展开更多
This study analyzes the potential of an agricultural residue,hazelnut shells,as raw material in a combined ther-mochemical process to obtain pyro-gas and biochar for environmental remediation.The novelty of this study...This study analyzes the potential of an agricultural residue,hazelnut shells,as raw material in a combined ther-mochemical process to obtain pyro-gas and biochar for environmental remediation.The novelty of this study relies on the definition of a pyrolytic polygeneration process to simultaneously attain an energy-type product and abiochar to maximize the versatility of the products and their usage.To this aim,the heating value of the gas and its potential to feed a micro combined heat and power(micro-CHP)system was evaluated.Additionally,the resulting biochar was chemically activated and tested as adsorbent for the removal of contaminants from an aqueous solution.Results show that the pyro-gas from the shell-type residue was suitable to be used as feed stream in a micro-CHP unit,which was able to operate near the full-load(91.9%)with electrical and thermal efficiencies of 27.6%and 57.9%,respectively.In the case of the biochar fraction,poor results were found for the char prior to activation.Instead,once it was activated with KOH,the resulting activated carbon presented high effectiveness as adsorbent and complete removal of the measured compound(methylene blue)was achieved.展开更多
文摘This paper addresses the planning problem of residential micro combined heat and power (micro-CHP) systems (including micro-generation units, auxiliary boilers, and thermal storage tanks) considering the associated technical and economic factors. Since the accurate values of the thermal and electrical loads of this system cannot be exactly predicted for the planning horizon, the thermal and electrical load uncertainties are modeled using a two-stage adaptive robust optimization method based on a polyhedral uncertainty set. A solution method, which is composed of column-and-constraint generation (C&CG) algorithm and block coordinate descent (BCD) method, is proposed to efficiently solve this adaptive robust optimization model. Numerical results from a practical case study show the effective performance of the proposed adaptive robust model for residential micro-CHP planning and its solution method.
文摘微型热电联供(micro-combined heat and power,micro-CHP)有利于提高能效和保护环境,是建筑供能发展的方向之一.规划阶段micro-CHP方案评价是项目成功的关键步骤.为了使方案的区间数指标可以应用于逼近理想解的排序(technique for order preference by similarity to an ideal solution,TOPSIS),首先用理想解区间计算距离范围、相对接近程度;然后定义可接受函数对方案进行排序.通过适用于小型建筑的4种方案为例验证了该方法的可行性和适用性.
文摘分别考察了广州典型家庭在使用4种不同技术的微型热电联产产品(Ene-Farm、Ene-Farm Type S、Ecowill、Whisper Gen)时的运行成本与碳减排效果,并分析电价、气价变化对运行成本的影响。结果表明,Ene-Farm的运行成本最低,经济节约指数达14.8%,Ene-Farm Type S的碳减排效果最好,二氧化碳减排指数达37.3%。灵敏度分析表明,微型热电联产系统的运行成本随着电价的升高、气价的降低而降低。
文摘以热电联供(Combined Heat and Power,CHP)为基础的多能源微电网包含多种形式的能源流。各类型能源流耦合运行,以提高能源利用效率。在此基础上,对多能源微电网进行科学的运行规划,可有效兼顾经济性和环保特性。基于上述考虑,文中在多能源微电网中加入各类需求侧响应手段,提出一种考虑各种需求侧热-电协同响应的多目标优化规划方法。所提模型目标函数包括微电网运行经济性指标和环保特性指标,即:碳排放指标。结果表明,接入各类需求侧响应手段的热-电协同响应可有效降低热-电微电网所需的燃气锅炉和储热罐容量,提高系统的经济效益和环保效益。
基金This research has been funded by the University of the Basque Coun-try,UPV/EHU,(Project PES20/38)Gipuzkoa’s Provincial Govern-ment under the program“Etorkizuna Eraikiz”2020/2021This research has been partially funded by the European Union and the Italian Min-istry of Education,University and Research,under the project“AIM-Attrazione e MobilitàInternazionale,in attuazione dell’Azione I.2 Mo-bilitàdei Ricercatori dell’Asse I del PON R&I 2014-2020-Linea di In-tervento 1”,AIM1889410.
文摘This study analyzes the potential of an agricultural residue,hazelnut shells,as raw material in a combined ther-mochemical process to obtain pyro-gas and biochar for environmental remediation.The novelty of this study relies on the definition of a pyrolytic polygeneration process to simultaneously attain an energy-type product and abiochar to maximize the versatility of the products and their usage.To this aim,the heating value of the gas and its potential to feed a micro combined heat and power(micro-CHP)system was evaluated.Additionally,the resulting biochar was chemically activated and tested as adsorbent for the removal of contaminants from an aqueous solution.Results show that the pyro-gas from the shell-type residue was suitable to be used as feed stream in a micro-CHP unit,which was able to operate near the full-load(91.9%)with electrical and thermal efficiencies of 27.6%and 57.9%,respectively.In the case of the biochar fraction,poor results were found for the char prior to activation.Instead,once it was activated with KOH,the resulting activated carbon presented high effectiveness as adsorbent and complete removal of the measured compound(methylene blue)was achieved.
