碳捕集与封存(Carbon capture and storage, CCS)的投资决策研究大多聚焦于单一企业的不足,从燃煤电厂角度出发,描述了两家投资主体参与市场竞争的“双寡头”情况;同时,考虑了碳价和技术创新双重不确定的影响,将碳配额和政府补贴作为鼓...碳捕集与封存(Carbon capture and storage, CCS)的投资决策研究大多聚焦于单一企业的不足,从燃煤电厂角度出发,描述了两家投资主体参与市场竞争的“双寡头”情况;同时,考虑了碳价和技术创新双重不确定的影响,将碳配额和政府补贴作为鼓励投资的激励政策,构建了CCS改造投资的实物期权评价模型。通过逆向归纳法,分别得出垄断情况和双寡头情况下的投资价值和投资临界值。研究表明:抢占投资会造成投资者的短视行为,碳价波动率、碳捕获率、技术创新幅度等参数的增大会减缓投资,政府补贴和技术创新概率的增大则会加速投资。展开更多
The Joule-Thomson effect is one of the important thermodynamic properties in the system relevant to gas switching reforming with carbon capture and storage(CCS). In this work, a set of apparatus was set up to determin...The Joule-Thomson effect is one of the important thermodynamic properties in the system relevant to gas switching reforming with carbon capture and storage(CCS). In this work, a set of apparatus was set up to determine the Joule-Thomson effect of binary mixtures(CO_(2)+ H_(2)). The accuracy of the apparatus was verified by comparing with the experimental data of carbon dioxide. The Joule-Thomson coefficients(μ_(JT)) for(CO_(2)+ H_(2)) binary mixtures with mole fractions of carbon dioxide(x_(CO_(2))= 0.1, 0.26, 0.5,0.86, 0.94) along six isotherms at various pressures were measured. Five equations of state EOSs(PR,SRK, PR, BWR and GERG-2008 equation) were used to calculate the μ_(JT)for both pure systems and binary systems, among which the GERG-2008 predicted best with a wide range of pressure and temperature.Moreover, the Joule-Thomson inversion curves(JTIC) were calculated with five equations of state. A comparison was made between experimental data and predicted data for the inversion curve of CO_(2). The investigated EOSs show a similar prediction of the low-temperature branch of the JTIC for both pure and binary systems, except for the BWRS equation of state. Among all the equations, SRK has the most similar result to GERG-2008 for predicting JTIC.展开更多
提高能源利用效率与增加可再生能源占比是实现“双碳”目标的重要路径。然而以热电联产机组(Combined Heat and Power,CHP)为核心单元的综合能源系统存在热电耦合约束,导致其难以集成高比例可再生能源。为解决该问题,文中提出碳捕集系统...提高能源利用效率与增加可再生能源占比是实现“双碳”目标的重要路径。然而以热电联产机组(Combined Heat and Power,CHP)为核心单元的综合能源系统存在热电耦合约束,导致其难以集成高比例可再生能源。为解决该问题,文中提出碳捕集系统(Carbon Capture System,CCS)耦合两阶段电转气(Power-to-Gas,P2G)的综合能源系统优化调度模型,同时对P2G运行所产生的氢气进行多元利用。考虑风光的不确定性,提出以成本最小与碳排放最低的多目标优化方法来平衡集成系统的经济性和碳排放量。构建算例仿真并采用gurobi求解器求解。仿真结果表明,所提方法优化了风光消纳量、碳排放量、系统成本,验证了所提模型的有效性和优越性。展开更多
以铁路控制、指挥与信号子系统互联互通技术规范(EU)2023/1695为基础,对车载命令与信号子系统(Control-Command and Signalling On-board Subsystem,CCS)在开展欧盟互联互通符合性认证过程中,如何去开展中间阶段符合性认证进行解析,分...以铁路控制、指挥与信号子系统互联互通技术规范(EU)2023/1695为基础,对车载命令与信号子系统(Control-Command and Signalling On-board Subsystem,CCS)在开展欧盟互联互通符合性认证过程中,如何去开展中间阶段符合性认证进行解析,分析中间阶段符合性认证优劣势,重点剖析和总结中间阶段符合性认证流程与各认证阶段相关工作,并给出切实可行的认证示例。希望为我国车载CCS子系统迈向国际市场提供借鉴。展开更多
文摘碳捕集与封存(Carbon capture and storage, CCS)的投资决策研究大多聚焦于单一企业的不足,从燃煤电厂角度出发,描述了两家投资主体参与市场竞争的“双寡头”情况;同时,考虑了碳价和技术创新双重不确定的影响,将碳配额和政府补贴作为鼓励投资的激励政策,构建了CCS改造投资的实物期权评价模型。通过逆向归纳法,分别得出垄断情况和双寡头情况下的投资价值和投资临界值。研究表明:抢占投资会造成投资者的短视行为,碳价波动率、碳捕获率、技术创新幅度等参数的增大会减缓投资,政府补贴和技术创新概率的增大则会加速投资。
基金supported by the National Natural Science Foundation of China (21878056)Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2019Z002)。
文摘The Joule-Thomson effect is one of the important thermodynamic properties in the system relevant to gas switching reforming with carbon capture and storage(CCS). In this work, a set of apparatus was set up to determine the Joule-Thomson effect of binary mixtures(CO_(2)+ H_(2)). The accuracy of the apparatus was verified by comparing with the experimental data of carbon dioxide. The Joule-Thomson coefficients(μ_(JT)) for(CO_(2)+ H_(2)) binary mixtures with mole fractions of carbon dioxide(x_(CO_(2))= 0.1, 0.26, 0.5,0.86, 0.94) along six isotherms at various pressures were measured. Five equations of state EOSs(PR,SRK, PR, BWR and GERG-2008 equation) were used to calculate the μ_(JT)for both pure systems and binary systems, among which the GERG-2008 predicted best with a wide range of pressure and temperature.Moreover, the Joule-Thomson inversion curves(JTIC) were calculated with five equations of state. A comparison was made between experimental data and predicted data for the inversion curve of CO_(2). The investigated EOSs show a similar prediction of the low-temperature branch of the JTIC for both pure and binary systems, except for the BWRS equation of state. Among all the equations, SRK has the most similar result to GERG-2008 for predicting JTIC.
文摘以铁路控制、指挥与信号子系统互联互通技术规范(EU)2023/1695为基础,对车载命令与信号子系统(Control-Command and Signalling On-board Subsystem,CCS)在开展欧盟互联互通符合性认证过程中,如何去开展中间阶段符合性认证进行解析,分析中间阶段符合性认证优劣势,重点剖析和总结中间阶段符合性认证流程与各认证阶段相关工作,并给出切实可行的认证示例。希望为我国车载CCS子系统迈向国际市场提供借鉴。
