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Search for a natural scientific measure of economy

John E COULTER

《环境科学与工程前沿（英文）》 2011年第5卷第1期页码 111-118 doi: 10.1007/s11783-011-0285-7

摘要： Through human history, wealth has been measured in grain, gold, and, now, dollars. Though counterfeiting of coins and notes goes back a long way, it is only with electronic financial accounting in a global economy tainted by toxic loans and imaginary funds that there is an urgency to search for a realistic objective way to monitor and regulate what we are doing to our Earth and ourselves. Various schemes using analysis of utility functions, oil equivalents, entropy, energy, and other units have been tried and, while helping to understand some basic processes and flows, have always been swamped by the machinations of financiers and the attention big sums of money attract. Now, the concept of exergy, pioneered in Eastern Europe in the 1950s, is being researched, developed, and applied, especially in China, driven by the desperation to measure the reality beyond the twin specters of global financial and environmental crises. A rough inventory of the matter in the biosphere at the coordinate details of an angstrom and an appreciation of how humans harness and manipulate electromagnetic forces can be enlightening as to what is and is not sustainable. Without that understanding, any financial estimate and proposed stimulus packages or IMF reform will be wildly wrong and may even be headed in the wrong direction.

关键词： climate change financial crisis energy exergy environment

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Evaluation of renewable energies production potential in the Middle East: confronting the world’s energycrisis

Hamid BAHRAMPOUR, Amir Khosro BEHESHTI MARNANI, Mohammad Bagher ASKARI, Mohammad Reza BAHRAMPOUR

《能源前沿（英文）》 2020年第14卷第1期页码 42-56 doi: 10.1007/s11708-017-0486-2

摘要： Oil and fossil fuels, the main source of energy in the Middle East have obviously the most destructive effects on the environment and public health. The developed countries of the Middle East are faced with the crisis and energy security. This paper is about evaluating the energy demand /consumption in the Middle East. First, the position of energy consumption in the world and the Middle East is discussed. Next, the evaluation of the current potential of clean energy production from renewable energies is explained. Finally, according to related maps, charts and information presented for the condition of renewable energy which has been approved by the countries of the Middle East, the greatest places in some countries of this region are introduced and discussed.

关键词： Middle East countries renewable energy fossil fuels energy crisis

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Revolutionizing heat transport enhancement with liquid metals: Proposal of a new industry of water-free heat exchangers

Haiyan LI, Jing LIU

《能源前沿（英文）》 2011年第5卷第1期页码 20-42 doi: 10.1007/s11708-011-0139-9

摘要： Water is perhaps the most widely adopted working fluid in conventional industrial heat transport engineering. However, it may no longer be the best option today due to the increasing scarcity of water resources. Furthermore, the wide variations in water supply throughout the year and across different geographic regions also makes it harder to easily access. To address this issue, finding new alternatives to replace water-based technologies is imperative. In this paper, the concept of a water-free heat exchanger is proposed and comprehensively analyzed for the first time. The liquid metal with a low melting point is identified as an ideal fluid that can flexibly be used within a wide range of working temperatures. Some liquid metals and their alloys, which have previously received little attention in thermal management areas, are evaluated. With superior thermal conductivity, electromagnetic field drivability, and extremely low power consumption, liquid metal coolants promise many opportunities for revolutionizing modern heat transport processes: serving as heat transport fluid in industries, administrating thermal management in power and energy systems, and innovating enhanced cooling in electronic or optical devices. Furthermore, comparative analyses are conducted to understand the technical barriers encountered by advanced water-based heat transfer strategies and clarify this new frontier in heat-transport study. In addition, the unique merits of liquid metals that could lead to innovative heat exchanger technologies are evaluated comprehensively. A few promising industrial situations, such as heat recovery, chip cooling, thermoelectricity generation, and military applications, where liquid metals could play irreplaceable roles, were outlined. The technical challenges and scientific issues thus raised are summarized. With their evident ability to meet various critical requirements in modern advanced energy and power industries, liquid metal-enabled technologies are expected to usher a new and global era of water-free heat exchangers.

关键词： heat exchanger liquid metal water resource heat transport enhancement coolant thermal management process engineering energy crisis chip cooling

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得克萨斯州电力危机凸显其电网漏洞

Mitch Leslie

《工程（英文）》 2021年第7卷第10期页码 1348-1350 doi: 10.1016/j.eng.2021.08.007

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基于粗神经网络的企业财务危机预警方法

柳炳祥,盛昭翰

《中国工程科学》 2002年第4卷第8期页码 58-62

摘要：

分析了评价财务危机的指标体系和财务危机等级的划分，论述了粗神经网络的结构和基本原理，叙述了基于粗神经网络的财务危机预警方法，并给出了一个基于粗神经网络的财务危机的预警实例。实验结果表明，该方法应用于财务危机预警中是有效的，为财务危机预警提供了一条新的研究思路和方法。

关键词：财务危机指标体系粗集神经网络预警

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中国城市化进程中的粮食安全与风/煤制天然气单细胞蛋白的研究

曹晨,余波,顾为东

《中国工程科学》 2015年第17卷第3期页码 107-112

摘要：

据预测2030年我国人口将会达到峰值14.5亿，城市化率达到70 %，届时城市人口新增3亿，总数将超过10亿。随着总人口的持续增加以及城市人口的迅速膨胀，我国未来将会面临严峻的粮食不足问题，尤其以蛋白质为代表的营养物质将会出现严重短缺。本文针对这一问题，提出了以风力发电为能源，以煤制天然气为原料的单细胞蛋白制备新思路，新途径。此方法通过煤制天然气生产单细胞蛋白，既解决了传统煤炭利用中碳排放高、环境负荷大等缺点，实现了煤炭的升级、绿色利用，又解决了利用石油、工农业废弃物生产单细胞蛋白所产生的食品安全性等问题。另外，此方法可实现大规模工业化生产，为解决我国未来蛋白质不足提供一条绿色、高效、切实可行的新途径。

关键词：城镇化；粮食安全；非并网发电；煤制天然气；单细胞蛋白

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Upgrading to urban water system 3.0 through sponge city construction

Nanqi Ren, Qian Wang, Qiuru Wang, Hong Huang, Xiuheng Wang

《环境科学与工程前沿（英文）》 2017年第11卷第4期 doi: 10.1007/s11783-017-0960-4

摘要： Urban water system 3.0 (Blue, gray, brown and yellow arrows represent water flow, wastewater flow, resource and energy respectively) Facing the pressure of excessive water consumption, high pollution load and rainstorm waterlogging, linear and centralized urban water system, system 2.0, as well as traditional governance measures gradually exposed characters of water-sensitivity, vulnerability and unsustainability, subsequently resulting in a full-blown crisis of water shortage, water pollution and waterlogging. To systematically relieve such crisis, we established healthy urban water-cycling system 3.0, in which decentralized sewerage systems, spongy infrastructures and ecological rivers play critical roles. Through unconventional water resource recycling, whole process control of pollutions and ecological restoration, system 3.0 with integrated management measures, is expected to fit for multiple purposes which involve environmental, ecological, economic and social benefits. With advantages of flexibility, resilience and sustainability, water system 3.0 will show an increasingly powerful vitality in the near future.

关键词： Water crisis Urban water system Spongy city Decentralized system Multi-purpose

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核能发展国际高端论坛 International Summit on Nuclear Energy Development

会议日期： 2019年05月15日

会议地点：中国

主办单位：中国工程院

2003年SARS对中国交通客运量影响的后评价研究——基于本底趋势线全国28个省（市）自治区的分析与估算

孙根年,马丽君

《中国工程科学》 2007年第9卷第6期页码 32-37

摘要：

2003年SARS是中国公众健康的“灾难”，交通旅客运输因此蒙受巨大损失。依据本底趋势线理论，对此次危机的交通客运量损失进行了定量估算。结果显示：2003年SARS共造成交通旅客损失10.07亿人次，其中，公路损失8.88亿人次，铁路损失1畅05亿人次，航空损失1611.7万人次，水运损失1943万人次；危机的生命周期从2003年4月开始，5～6月全面爆发，7～8月消减衰退，11～12月有一定的补偿；由于交通区位和SARS疫情的差异，全国28个省（市）自治区客运量损失可划分为4个等级，其中，广东、四川、河北3 省客运量损失超过1 亿人次；以 28个省（市）自治区客运量损失与2003 年本底值、 SARS 确诊人数建立空间预报模型，结果显示，客运量本底值边际系数为０0.788 46 ，SARS 确诊人数边际系数为0.075 868。

关键词： SARS危机本底趋势线客运量损失地域分布空间模型

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Microwave-induced high-energy sites and targeted energy transition promising for efficient energy deployment

《能源前沿（英文）》 2022年第16卷第6期页码 931-942 doi: 10.1007/s11708-021-0771-y

摘要： Diverse interactions between microwaves and irradiated media provide a solid foundation for identifying novel organization pathways for energy flow. In this study, a high-energy-site phenomenon and targeted-energy transition mechanism were identified in a particular microwave heating (MH) process. Intense discharges were observed when microwaves were imposed on irregularly sized SiC particles, producing tremendous heat that was 8-fold the amount generated in the discharge-free case. Energy efficiency was thereby greatly improved in the electricity-microwaves-effective heat transition. Meanwhile, the dispersed microwave field energy concentrated in small sites, where local temperatures could reach 2000°C– 4000°C, with the energy density reaching up to 4.0 × 10⁵ W/kg. This can be called a high-energy site phenomenon which could induce further processes or reactions enhancement by coupling effects of heat, light, and plasma. The whole process, including microwave energy concentration and intense site-energy release, shapes a targeted-energy transition mechanism that can be optimized in a controlled manner through morphology design. In particular, the discharge intensity, frequency, and high-energy sites were strengthened through the fabrication of sharp nano/microstructures, conferring twice the energy efficiency of untreated metal wires. The microwave-induced high-energy sites and targeted energy transition provide an important pathway for high-efficiency energy deployment and may lead to promising applications.

关键词： microwave discharge high-energy sites targeted-energy transition morphology design energy efficiency

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核能发展国际高端论坛 International Summit on Nuclear Energy Development

会议日期： 2019年05月15日

会议地点：中国

主办单位：中国工程院

Analysis of energy saving optimization of campus buildings based on energy simulation

Dingding TONG, Jing ZHAO

《能源前沿（英文）》 2013年第7卷第3期页码 388-398 doi: 10.1007/s11708-013-0273-7

摘要： The energy consumption of campus buildings has specific characteristics, because of the concentrated distribution of people’s working time and locations that change in line with distinct seasonal features. The traditional energy system design and operation for campus buildings is only based on the constant room temperature, such as 25°C in summer and 18°C in winter in China, not taking into consideration the real heating or cooling load characteristics of campus buildings with different functions during the whole day and whole year, which usually results in a lot of energy waste. This paper proposes to set different set-point temperatures in different operation stages of public and residential campus buildings to reduce the heating and cooling design load for energy station and total campus energy consumption for annual operation. Taking a campus under construction in Tianjin, China as an example, two kinds of single building models were established as the typical public building and residential building models on the campus. Besides, the models were simulated at both set-point room temperature and constant room temperature respectively. The comparison of the simulation results showed that the single building energy saving method of the peak load clipping could be used for further analysis of the annual energy consumption of campus building groups. The results proved that the strategy of set-point temperature optimization could efficiently reduce the design load and energy consumption of campus building groups.

关键词： campus buildings set-point temperature energy simulation energy saving optimization

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Modeling China’s energy dilemma: conflicts among energy saving, energy security, and CO 2 mitigation

Feng FU, Zheng LI, Linwei MA,

《能源前沿（英文）》 2010年第4卷第3期页码 295-300 doi: 10.1007/s11708-010-0104-z

摘要： This study analyzes China’s future energy scenarios stretching until 2050 under different policy portfolios of energy security (e.g., oil import dependency) and CO emissions control. Four scenarios, namely, ① business as usual, ② strong oil import dependency (OID) control, ③ strong CO emissions control, and ④ twofold emphasis on OID and CO emissions control, are designed. The results reveal the existence of conflicts among China’s multiple objectives, particularly energy saving, energy security, and CO mitigation. Based on the analysis, an improvement in China’s efficiency in fossil energy conversion and the promotion of the utilization of non-fossil energy such as nuclear, wind, and hydro energy are recommended. The over-development of coal-derived fuels should also be avoided because of incremental coal consumption and CO emissions. Furthermore, research on and development of carbon capture and storage technologies should be promoted, while the energy efficiency loss caused by integrating these technologies into energy systems should be reduced in view of the high possibility of stricter standards for CO emissions in the future.

关键词： Energy dilemma energy saving energy security CO2 mitigation

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Blockchain in energy systems: values, opportunities, and limitations

《能源前沿（英文）》 2022年第16卷第1期页码 9-18 doi: 10.1007/s11708-022-0818-8

摘要： The structure of a power energy system is becoming more distributed than before. It becomes challenging to manage such a system in a centralized way, because a central authority may not exist or may not be trusted by all parties. Blockchain is a promising tool to address this challenge, by enabling trusted collaboration in the absence of a trusted central authority. Its use in the energy sector has been pioneered by several pilot projects. However, to date the energy sector has not seen large-scale deployment of blockchain, partly because the founders of those pilot projects, the public, and utilities have not reached consensus on the values and limitations of blockchain in energy. This perspective aims to bridge this gap. First, the philosophy and unique values of blockchain are discussed. Second, some promising blockchain-based applications in energy systems are presented. Third, some common misunderstandings of blockchain in energy are discussed. Last, some frequently-asked questions from utilities are discussed. Hopefully this perspective can help advance large-scale deployment of blockchain in energy systems.

关键词： blockchain immutability energy trading energy management data synchronization