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An innovative trigeneration system using biogas as renewable energy

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1179-1191页

作者： Grazia Leonzio Department of industrial and Information Engineering and economics University of L'Aquila

One of the ways to decrease the global primary energy consumption and the corresponding greenhouse gas emissions is the application of the combined cooling, heating and power generation technologies, known as trigeneration system. In this research an innovative trigeneration system, composed by an absorption heat pump, a mechanical compression heat pump, a steam plant, and a heat recovery plant is developed. The low tem- perature heat produced by absorption chiller is sent to a mechanical compression heat pump, that receives pro- cess water at low temperature from the heat recovery plant and bring it to higher temperatures. The trigeneration system is fed by biogas, a renewable energy. A design and a simulation of the system are developed by ChemCad 6.3 software. The plant produces 925 kW of electrical energy, 2523 kW of thermal energy and 473 kW of cooling energy, by the combustion of 3280 kW of biogas. Primary energy rate （P.E.R.） is equal 1.04 and a sensitivity analysis is carried out to evaluate the effect of cooling capacity, produced electrical energy and process water temperature. The first has a negative effect, while other parameters have a positive effect on P.E.R. Compared to a cogeneration system, the tdgeneration plant produces the 28% higher of power and the 40% lower of carbon dioxide emissions. An economic analysis shows that the plant is economically feasible only consid- ering economic incentives obtained by the use of heat pumps and steam plant at high efficiency. Saving 6431 t.a-1 corresponding to 658000 EUR.a-1 of incentives, the plant has a net present value （N.P.V.） and a pay back period （P.B.P.） respectively equal to 371000 EUR and 4 year. Future works should optimize the process considering cost and energetic efficiency as the two objective functions.

关键词： Trigeneration system Biogas Energy efficiency Process simulation Heat pumps Environmental analysis

New approach to eliminate structural redundancy in case resource pools using α mutual information

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Journal of Systems Engineering and Electronics 2013年第4期24卷 625-633页

作者： Man Xu Haiyan Yu Jiang Shen Department of industrial Engineering Nankai University College of Management and economics Tianjin University

Structural redundancy elimination in case resource pools （CRP） is critical for avoiding performance bottlenecks and maintaining robust decision capabilities in cloud computing services. For these purposes, this paper proposes a novel approach to ensure redundancy elimination of a reasoning system in CRP. By using α entropy and mutual information, functional measures to eliminate redundancy of a system are developed with respect to a set of outputs. These measures help to distinguish both the optimal feature and the relations among the nodes in reasoning networks from the redundant ones with the elimination criterion. Based on the optimal feature and its harmonic weight, a model for knowledge reasoning in CRP （CRPKR） is built to complete the task of query matching, and the missing values are estimated with Bayesian networks. Moreover, the robustness of decisions is verified through parameter analyses. This approach is validated by the simulation with benchmark data sets using cloud SQL. Compared with several state-of-the-art techniques, the results show that the proposed approach has a good performance and boosts the robustness of decisions.

关键词： case resource pool (CRP) knowledge reasoning redundancy elimination α mutual information robust decision.

COLLABORATIVE DESIGN OF RFID SYSTEMS FOR MULTI-PURPOSE SUPPLY CHAIN APPLICATIONS

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Journal of Systems Science and Systems Engineering 2013年第2期22卷 152-170页

作者： Hongyan DAI Jing XU School of Business Central University of Finance and Economics Department of industrial Engineering Tsinghua University

One of the key challenges for implementing RFID systems in supply chain management is the difficulty in economic justification. Such difficulty is further amplified by its public participation nature as multiple self-interest beneficiaries may receive diverse paybacks, and their incentives to join the system are difficult to align. This paper aims to address these problems by a collaborative design from two aspects. First, we propose to introduce a centralized planning mechanism in the chain to facilitate the participation, so that the cost of the overall system can be minimized. Second, we propose to analyze the multi-facet economic return from multi-purpose applications to achieve the full potential of RFID systems. To illustrate our approach, its application for inventory inaccuracy and product recall in RFID system is presented.

关键词： RFID collaborative design economic justification centralized planning

Natural resource dependence, public education investment,and human capital accumulation

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Petroleum Science 2018年第3期15卷 657-665页

作者： Hua-Ping Sun Wei-Feng Sun Yong Geng Yu-Sheng Kong Institute of industrial economics Jiangsu University School of Environmental Science and Engineering Shanghai Jiao Tong University Department of economics and Management Yuncheng University

This paper examines the relationships between natural resource dependence, public education investment, and human capital accumulation. It addresses why the “blessing” of abundant natural resources often turns into a “curse” in many countries and regions, focusing on the crowding-out effect of natural resources on human capital. According to our empirical analysis of provincial panel data from China, natural resource dependence is significantly and negatively correlated with human capital accumulation. The crowding-out effect of natural resources on human capital exists only in the central and western regions of China. Our introduction of an interaction term for natural resource dependence and public education investment underscores the possibility of investing in public education to reduce the crowding-out effect of natural resource dependence on human capital. The government should utilize the income of the natural resource sector to increase investment in education to enhance local human capital.

关键词： Natural resource dependence Public education investment Human capital accumulation Resource curse

Mathematical model of absorption and hybrid heat pump

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Chinese Journal of Chemical Engineering 2017年第10期25卷 1492-1504页

作者： Grazia Leonzio Department of industrial and Information Engineering and economics University of L'Aquila Via Giovanni Gronchi 18 67100 UAquila Italy

Recovering waste heat from industrial processes is bene ficial in order to reduce the primary energy demands and heat pumps can be used to this *** heat pumps are energy-saving and environment-friendly because use working fluids that do not cause ozone depletion and can reduce the global warming *** hybrid heat pump processes combine the conventional vapor-compression and the absorption heat pump *** about the simulations and modeling of hybrid heat pumps are few in *** this research a mathematical model for single effect absorption and hybrid heat pump is carried out with Chem Cad? ***–H_2O is used as working fluid while electrolytic NRTL and electrolytes latent heat are used as thermodynamic model due to the better *** parameters of activity coef ficients are regressed from experimental vapor pressure data while default constants are used for the solubility expressions.A design of heat pumps is developed and a new modeling of generator is *** coef ficient of performance of absorption heat pump and hybrid heat pump is equal to 0.7 and 0.83 *** absorption heat pump a sensitivity analysis is carried out to evaluate the effect of temperature and pressure generator,the concentration of Li–Br solution on coef ficient of performance,cooling capacity and working fluid *** hybrid heat pump,the different coef ficients of performance,the primary energy ratio,the generator heat,and the compressor power are analyzed for different values of compressor *** show that comparing the two systems the hybrid pump allows to save more primary energy,costs and carbon dioxide emissions with respect to absorption heat pump with the increasing of compressor proportion *** researches should focus on the construction of this heat pumps integrated in chemical processes as a biogas plant or trigeneration systems.

关键词： Absorption heat pumps Hybrid heat pumps LiBr–H2O modeling Energy efficiency Process simulation Mathematical model

REVISITING THE SIMILAR PROCESS TO ENGINEER THE CONTEMPORARY SYSTEMS

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Journal of Systems Science and Systems Engineering 2010年第3期19卷 321-350页

作者： Ana Luísa RAMOS José Vasconcelos FERREIRA Jaume BARCELó GOVCOPP-Department of economics Management and Industrial EngineeringUniversity of Aveiro Department of Statistics and Operations Research Technical University of Catalonia

This paper addresses the present-day context of Systems Engineering, revisiting and setting up an updated framework for the SIMILAR process in order to use it to engineer the contemporary systems. The contemporary world is crowded of large interdisciplinary complex systems made of other systems, personnel, hardware, software, information, processes, and facilities. An integrated holistic approach is crucial to develop these systems and take proper account of their multifaceted nature and numerous interrelationships. As the system＇s complexity and extent grow, the number of parties involved （stakeholders and shareholders） usually also raises, bringing to the interaction a considerable amount of points of view, skills, responsibilities, and interests. The Systems Engineering approach aims to tackle the complex and interdisciplinary whole of those socio-technical systems, providing the means to enable their successful realization. Its exploitation in our modern world is assuming an increasing relevance noticeable by emergent standards, academic papers, international conferences, and post-graduate programmes in the field. This work aims to provide ＂the picture＂ of modern Systems Engineering, and to update the context of the SIMILAR process model in order to use this renewed framework to engineer the challenging contemporary systems. The emerging trends in the field are also pointed-out with particular reference to the Model-Based Systems Engineering approach.

关键词： SIMILAR process systems engineering standards MBSE

CONTROLLING INFECTIOUS DISEASE OUTBREAKS： A DETERMINISTIC ALLOCATION-SCHEDULING MODEL WITH MULTIPLE DISCRETE RESOURCES

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Journal of Systems Science and Systems Engineering 2017年第2期26卷 219-239页

作者： Nikolaos Rachaniotis Thomas K. Dasaklis Costas Pappis Department of economics Democritus University of Thrace Komotini Greece Department of industrial Management and Technology University of Piraeus Piraeus Greece

Infectious disease outbreaks occurred many times in the past and are more likely to happen in the future. In this paper the problem of allocating and scheduling limited multiple, identical or non-identical, resources employed in parallel, when there are several infected areas, is considered. A heuristic algorithm, based on Shih＇s （1974） and Pappis and Rachaniotis＇（2010） algorithms, is proposed as the solution methodology. A numerical example implementing the proposed methodology in the context of a specific disease outbreak, namely influenza, is presented. The proposed methodology could be of significant value to those drafting contingency plans and healthcare policy agendas.

关键词： Resource allocation healthcare management epidemics heuristics

Study on Consistent Agricultural Compensation Standards for Ecosystem and Ecological Value

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China Economist 2021年第4期16卷 45-59页

作者： Niu Zhiwei Zou Zhaoxi China Institute of industrial economics Capital University of Economics and Business(CUEB)BeijingChina

Chinese and international studies on agricultural ecological compensation standards fall into two categories:While some focus on the cost of ecological protection,others proceed from the value of ecological *** and value are two aspects of an integrated input-output system,but most existing studies on both types of compensation standards are independent of each *** upon the reasonable elements from both types of studies to overcome each other’s one-sidedness,this paper has created a“model of consistent compensation standards for the ecosystem and ecological value,”integrating the research approaches for both types of compensation standards under the same analytical *** the application and analysis of this model,this paper has verified the model’s theoretical and practical significance in correcting the one-sidedness of each type of *** principles and methodologies for creating the model may be further extended to research on agricultural ecological compensation standards under different *** some circumstances,the ability of relatively redundant resources to create ecological value is *** address this problem,this paper employs a linear programming(LP)sensitivity analysis instrument to correct the model’s initial optimal solutions and arrive at consistent compensation standards that satisfy the consistency between ecosystem and ecological value,thus perfecting the theoretical and methodological system created by this paper for research on agricultural ecological compensation standards.

关键词： agricultural ecological compensation standards ecosystem ecological value consistency

The Framework System of Natural Resource Statement of Assets and Liabilities:An Idea Based on SEEA2012, SNA2008 and National Statement of Assets and Liabilities

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Journal of Resources and Ecology 2015年第6期6卷 433-437页

作者： HU Wenlong SHI Dan GUO Chaoxian Institute of industrial economics CASS

1 Introduction"Natural Resource Statement of Assets and Liabilities"(NRSAL)is a new *** exploration of preparing the NRSAL emerges in the tendency from constructing single"natural resource accounting"to comprehensive"natural resource environmental statement system"(Feng et al.2014;Huang and Zhao2015).National Statement of Assets and Liabilities is a table which is built by referring to the Statement

关键词：自然资源环境资产负债表架体报表报告系统