Linan Dun, Xinyu Yu, Han Wang, P. Lin, Ziyao Xiong, Xu-qiang Guo, Libo Zhang
The oxidative cracking of diformyltricyclodecanes (DFTD) to C6-C8 alkenes and alkenes were systematically studied in this work. A series of experiments was performed over a broad range of conditions (temperature: 40–60 °C; oxygen pressure: 0–1.0 Mpa; reaction time: 5–90 min, solvent selection) for exploring the reaction route and mechanism. Results show that the higher temperature and oxygen pressure, as well as tetrahydrofuran (THF) as solvent are of benefit to the generation of cracking products. In addition, the kinetics of this reaction was explored by the dynamic fitting. The obtained kinetics parameters demonstrate that the transformation of intermediate to cracking products possesses higher activation energy than to dicarboxyltricyclodecaneacids (DCTDA), showing that higher temperature is conducive to the generation of DFTD cracking products. This work firstly demonstrated that DFTD could be formed into C6-C8 alkenes containing the same as gasoline compound by the oxidative cracking, suggesting that the by-product of petroleum and coal could be transferred into fuels, this expanded the application of DCPD and will have significant and positive influence on the petroleum and coal chemical industry.
{"title":"Unexpected oxidative cracking of Diformyltricyclodecanes under catalyst-free and ultra-low temperature","authors":"Linan Dun, Xinyu Yu, Han Wang, P. Lin, Ziyao Xiong, Xu-qiang Guo, Libo Zhang","doi":"10.1093/ijlct/ctac136","DOIUrl":"https://doi.org/10.1093/ijlct/ctac136","url":null,"abstract":"\u0000 The oxidative cracking of diformyltricyclodecanes (DFTD) to C6-C8 alkenes and alkenes were systematically studied in this work. A series of experiments was performed over a broad range of conditions (temperature: 40–60 °C; oxygen pressure: 0–1.0 Mpa; reaction time: 5–90 min, solvent selection) for exploring the reaction route and mechanism. Results show that the higher temperature and oxygen pressure, as well as tetrahydrofuran (THF) as solvent are of benefit to the generation of cracking products. In addition, the kinetics of this reaction was explored by the dynamic fitting. The obtained kinetics parameters demonstrate that the transformation of intermediate to cracking products possesses higher activation energy than to dicarboxyltricyclodecaneacids (DCTDA), showing that higher temperature is conducive to the generation of DFTD cracking products. This work firstly demonstrated that DFTD could be formed into C6-C8 alkenes containing the same as gasoline compound by the oxidative cracking, suggesting that the by-product of petroleum and coal could be transferred into fuels, this expanded the application of DCPD and will have significant and positive influence on the petroleum and coal chemical industry.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42482266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The study’s purpose was to determine the efficiency, as well as the energy and exergy analysis of the vacuum tube solar collector when using a mixture of water with Fe3O4 nanoparticles and multiwall carbon nanotubes in the selected percentage ratio as the working fluid. By varying the concentration of Fe3O4 nanoparticles in the working fluid from 0.05 to 0.15 wt. %, it was found that the maximum efficiency is achieved at a Fe3O4 content equal to 0.1 wt. %. At this concentration, the ratio of Fe3O4 and multiwall carbon nanotubes in the mixture varied from 4:1 to 1:4. It was found that the Fe3O4/ multiwall carbon nanotubes ratio (1:4) can increase the efficiency of the solar collector up to 84%. Exergy analysis performed showed that water without the addition of nanoparticles Fe3O4 and multiwall carbon nanotubes was characterized by the maximum values of exergy destruction and entropy generation at any level of solar radiation, and water with the addition of nanoparticles Fe3O4/ multiwall carbon nanotubes in a ratio of 1:4 was characterized by the minimum values of exergy destruction and entropy generation.
{"title":"Improving a solar collector’s efficiency by selecting the composition of the working fluid used","authors":"Bader Alshuraiaan","doi":"10.1093/ijlct/ctad027","DOIUrl":"https://doi.org/10.1093/ijlct/ctad027","url":null,"abstract":"\u0000 The study’s purpose was to determine the efficiency, as well as the energy and exergy analysis of the vacuum tube solar collector when using a mixture of water with Fe3O4 nanoparticles and multiwall carbon nanotubes in the selected percentage ratio as the working fluid. By varying the concentration of Fe3O4 nanoparticles in the working fluid from 0.05 to 0.15 wt. %, it was found that the maximum efficiency is achieved at a Fe3O4 content equal to 0.1 wt. %. At this concentration, the ratio of Fe3O4 and multiwall carbon nanotubes in the mixture varied from 4:1 to 1:4. It was found that the Fe3O4/ multiwall carbon nanotubes ratio (1:4) can increase the efficiency of the solar collector up to 84%. Exergy analysis performed showed that water without the addition of nanoparticles Fe3O4 and multiwall carbon nanotubes was characterized by the maximum values of exergy destruction and entropy generation at any level of solar radiation, and water with the addition of nanoparticles Fe3O4/ multiwall carbon nanotubes in a ratio of 1:4 was characterized by the minimum values of exergy destruction and entropy generation.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48052483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In water-scarce regions where fog is abundant, the population can rely on this resource to obtain fresh water. The potential to harvest fog is confirmed by Large Fog Collector projects worldwide, which are reviewed. Mostly maintenance issues due to environmental and complex social factors compromise the sustainability of such projects. Researchers endeavour to resolve these issues by developing enhanced materials, while others employ biomimetic design, hence creating innovative collectors. The objective of this paper is to survey and review the state-of-the-art and develop a framework of different types of innovative fog collectors, including conceptual, experimental, and operational aspects.
{"title":"Water harvesting through fog collectors: a review of conceptual, experimental, and operational aspects","authors":"N. Verbrugghe, A. Khan","doi":"10.1093/ijlct/ctac129","DOIUrl":"https://doi.org/10.1093/ijlct/ctac129","url":null,"abstract":"\u0000 In water-scarce regions where fog is abundant, the population can rely on this resource to obtain fresh water. The potential to harvest fog is confirmed by Large Fog Collector projects worldwide, which are reviewed. Mostly maintenance issues due to environmental and complex social factors compromise the sustainability of such projects. Researchers endeavour to resolve these issues by developing enhanced materials, while others employ biomimetic design, hence creating innovative collectors. The objective of this paper is to survey and review the state-of-the-art and develop a framework of different types of innovative fog collectors, including conceptual, experimental, and operational aspects.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48048152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Due to the widespread use of renewable energy sources, lithium-ion batteries have developed rapidly because renewable energy sources such as photovoltaics and wind, which are very much affected by the environment and their power output can be better leveled if lithium-ion batteries are used. Battery state of charge (SOC) characterizes the remaining battery power, while battery state of health (SOH) characterizes the battery life state, and they are key parameters to characterize the state of lithium-ion batteries. In terms of battery SOC estimation, this paper optimizes the extended Kalman filtering (EKF) algorithm weights to adjust the weights during high current bursts to obtain better SOC tracking performance, and optimizes the back propagation (BP) neural network for SOH estimation to obtain better weights to further obtain more accurate battery SOH. The feasibility of the optimized algorithm is validated by the experimental platform.
{"title":"State of charge and state of health estimation strategies for lithium-ion batteries","authors":"Nanlan Wang, X. Xia, Xiaoyong Zeng","doi":"10.1093/ijlct/ctad032","DOIUrl":"https://doi.org/10.1093/ijlct/ctad032","url":null,"abstract":"\u0000 Due to the widespread use of renewable energy sources, lithium-ion batteries have developed rapidly because renewable energy sources such as photovoltaics and wind, which are very much affected by the environment and their power output can be better leveled if lithium-ion batteries are used. Battery state of charge (SOC) characterizes the remaining battery power, while battery state of health (SOH) characterizes the battery life state, and they are key parameters to characterize the state of lithium-ion batteries. In terms of battery SOC estimation, this paper optimizes the extended Kalman filtering (EKF) algorithm weights to adjust the weights during high current bursts to obtain better SOC tracking performance, and optimizes the back propagation (BP) neural network for SOH estimation to obtain better weights to further obtain more accurate battery SOH. The feasibility of the optimized algorithm is validated by the experimental platform.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45159030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hong Qian, Jiaren Yang, B. Peng, Fangfang Mi, Wenjing Li, Sicong Yan, Juanli Wang, Fatang Jiang
Polysaccharide-based aerogels show great potential in heat absorption, but it lacks comprehensive evaluation system for their endothermic properties. To fully assess their endothermic properties, konjac glucomannan (KGM)/starch aerogel was used and its heat absorption performance (HAP) was investigated. It was found that the heat absorption ability of the samples was attributed to thermal collapse of the samples at high temperature. The composition, structure, size, and mass of aerogels would have effect on their HAP. The cellulose acetate (CA) aerogel showed better HAP than KGM/starch aerogel with the same volume. However, the performance of KGM/starch aerogel excelled CA under the same mass. These results were in accordance with the results obtained by thermal conductivity analyzer, which indicated the potential of the system to evaluate the HAP of the aerogels comprehensively.
{"title":"Evaluation of the heat absorption performance of konjac glucomannan/starch aerogel","authors":"Hong Qian, Jiaren Yang, B. Peng, Fangfang Mi, Wenjing Li, Sicong Yan, Juanli Wang, Fatang Jiang","doi":"10.1093/ijlct/ctad003","DOIUrl":"https://doi.org/10.1093/ijlct/ctad003","url":null,"abstract":"\u0000 Polysaccharide-based aerogels show great potential in heat absorption, but it lacks comprehensive evaluation system for their endothermic properties. To fully assess their endothermic properties, konjac glucomannan (KGM)/starch aerogel was used and its heat absorption performance (HAP) was investigated. It was found that the heat absorption ability of the samples was attributed to thermal collapse of the samples at high temperature. The composition, structure, size, and mass of aerogels would have effect on their HAP. The cellulose acetate (CA) aerogel showed better HAP than KGM/starch aerogel with the same volume. However, the performance of KGM/starch aerogel excelled CA under the same mass. These results were in accordance with the results obtained by thermal conductivity analyzer, which indicated the potential of the system to evaluate the HAP of the aerogels comprehensively.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49553824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Due to the shortage of energy in the world, solar energy has received widespread attention as an inexhaustible new green energy and as one of the main sources of power. Many researchers have studied the various materials and efficiencies of solar cells; however, how to extend the life of solar cells has rarely been studied. At present, the main encapsulating method of solar cells is to seal their surface with films such as EVA (Ethylene-Vinyl Acetate) and PVB Poly (vinyl butyral). The main problem that has been encountered is that the erosion of water and oxygen leads to a reduction in the service life and efficiency of solar cells. Inspired by the solar panels of satellites in space, a revolutionary vacuum-glazing encapsulating solution with zero H2O and O2 has been invented. The experimental results have nearly doubled the 30–35-year service life of solar cells, based on Deep Learning predictions. Therefore, the Building Integrated Photovoltaic (BIPV) can be used for the 70-year life of a building. The method is applicable to various solar cells, such as Crystalline Si cells, CIGS, CdTe and Perovskite film cells, etc. In practice, the main problems encountered in the encapsulation of vacuum glazing include the following: ensuring that the supporting pillar does not pierce the thin film PV and that it is placed accurately between the band gaps; ensuring that the emission of heat is not conducted in a vacuum; ensuring that the sealing sheet covers cover the exhausting port on the glass accurately; maintaining the vacuum degree for a long time; insulating the edge of the sealing materials, as well as other issues. The above problems have been solved perfectly through Machine Learning of Computer Vision and the design structure of the thin film PV.
{"title":"Revolutionary Encapsulating Solution of Solar PV Panels: Vacuum glazing with zero H2O and O2 replacing EVA/PVB films","authors":"Yingxi Tang","doi":"10.1093/ijlct/ctad010","DOIUrl":"https://doi.org/10.1093/ijlct/ctad010","url":null,"abstract":"\u0000 Due to the shortage of energy in the world, solar energy has received widespread attention as an inexhaustible new green energy and as one of the main sources of power. Many researchers have studied the various materials and efficiencies of solar cells; however, how to extend the life of solar cells has rarely been studied. At present, the main encapsulating method of solar cells is to seal their surface with films such as EVA (Ethylene-Vinyl Acetate) and PVB Poly (vinyl butyral). The main problem that has been encountered is that the erosion of water and oxygen leads to a reduction in the service life and efficiency of solar cells. Inspired by the solar panels of satellites in space, a revolutionary vacuum-glazing encapsulating solution with zero H2O and O2 has been invented. The experimental results have nearly doubled the 30–35-year service life of solar cells, based on Deep Learning predictions. Therefore, the Building Integrated Photovoltaic (BIPV) can be used for the 70-year life of a building. The method is applicable to various solar cells, such as Crystalline Si cells, CIGS, CdTe and Perovskite film cells, etc. In practice, the main problems encountered in the encapsulation of vacuum glazing include the following: ensuring that the supporting pillar does not pierce the thin film PV and that it is placed accurately between the band gaps; ensuring that the emission of heat is not conducted in a vacuum; ensuring that the sealing sheet covers cover the exhausting port on the glass accurately; maintaining the vacuum degree for a long time; insulating the edge of the sealing materials, as well as other issues. The above problems have been solved perfectly through Machine Learning of Computer Vision and the design structure of the thin film PV.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43157718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Youliang Lao, Shu-yu An, Yi Liang, Mengdi Yang, Tao Zhang, Shanshan Chen
Lightweight ceramsite is the core material for building to achieve energy-saving and low-carbon operation. The disposal of remediated soil by Cr (VI) -contaminated, waste glass and ceramics after remediation has always been a major problem in the environmental field. Herein, it analyzed the composition and sintering process of the above three solid wastes, after studying the component preparation and firing process, lightweight ceramsites with bulk density and grain density of 626.79 kg/m3 and 1142.56 kg/m3, respectively, were successfully prepared, and the leaching concentration of Cr (VI) was controlled at a low concentration level below 0.06 mg/L. Compared with the conventional ceramsite preparation technology, the method of firing ceramsite by the remediated soil, waste glass and ceramics can effect eliminate the environmental risk of solid waste and effectively reduce the consumption of clay and other resources, which has the technical advantages of safety, reliability, green and low carbon.
{"title":"Preparation of lightweight ceramsite from remediated soil, waste glass and ceramics","authors":"Youliang Lao, Shu-yu An, Yi Liang, Mengdi Yang, Tao Zhang, Shanshan Chen","doi":"10.1093/ijlct/ctad019","DOIUrl":"https://doi.org/10.1093/ijlct/ctad019","url":null,"abstract":"\u0000 Lightweight ceramsite is the core material for building to achieve energy-saving and low-carbon operation. The disposal of remediated soil by Cr (VI) -contaminated, waste glass and ceramics after remediation has always been a major problem in the environmental field. Herein, it analyzed the composition and sintering process of the above three solid wastes, after studying the component preparation and firing process, lightweight ceramsites with bulk density and grain density of 626.79 kg/m3 and 1142.56 kg/m3, respectively, were successfully prepared, and the leaching concentration of Cr (VI) was controlled at a low concentration level below 0.06 mg/L. Compared with the conventional ceramsite preparation technology, the method of firing ceramsite by the remediated soil, waste glass and ceramics can effect eliminate the environmental risk of solid waste and effectively reduce the consumption of clay and other resources, which has the technical advantages of safety, reliability, green and low carbon.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46027567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yaser Alaiwi, A. Abed, G. Smaisim, Mohamed Aly Saad Aly, Salema K. Hadrawi, Reza Morovati
Today, the use of alternative fuels that have plant origin has attracted the attention of most countries because these fuels emit less pollution. In this research, bioethanol production has been evaluated considering solar energy sources. In the present study, the possibility of developing net-zero energy concepts in a bioethanol production plant as one of the most consumed energy industries in the field of bio-systems of the country from a technical and economic perspective was investigated. The purpose of this research is to model the bioethanol production plant with the aim of achieving zero net energy using a photovoltaic system. In addition, technical and economic analyzes have been used in different approaches for a more detailed investigation. According to the modeling done, in the Zero net energy approach, the results showed that the maximum production of electrical energy by the photovoltaic cell is 76.6 GWh/yr. For this approach, the return on investment is 10.7 years. The area required to install photovoltaic modules in this approach is very large and equal to 88,334 m2.
{"title":"Simulation and investigation of bioethanol production considering energetic and economic considerations","authors":"Yaser Alaiwi, A. Abed, G. Smaisim, Mohamed Aly Saad Aly, Salema K. Hadrawi, Reza Morovati","doi":"10.1093/ijlct/ctad008","DOIUrl":"https://doi.org/10.1093/ijlct/ctad008","url":null,"abstract":"\u0000 Today, the use of alternative fuels that have plant origin has attracted the attention of most countries because these fuels emit less pollution. In this research, bioethanol production has been evaluated considering solar energy sources. In the present study, the possibility of developing net-zero energy concepts in a bioethanol production plant as one of the most consumed energy industries in the field of bio-systems of the country from a technical and economic perspective was investigated. The purpose of this research is to model the bioethanol production plant with the aim of achieving zero net energy using a photovoltaic system. In addition, technical and economic analyzes have been used in different approaches for a more detailed investigation. According to the modeling done, in the Zero net energy approach, the results showed that the maximum production of electrical energy by the photovoltaic cell is 76.6 GWh/yr. For this approach, the return on investment is 10.7 years. The area required to install photovoltaic modules in this approach is very large and equal to 88,334 m2.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48409304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yong Yang, Xiaotong Ren, Yiqiao Li, Dayuan Yuan, Yali Guo, Kun Zhang, S. Shen
Based on the pinch theory and energy cascade utilization principle, the performance of a multi effect shipboard vertical tube climbing film desalination system combined thermal vapour compression with different preheating configuration has been analyzed. The mathematical model is established for thermodynamic simulation, in which various thermodynamic losses caused by boiling point elevation and pressure drop are considered, and the effective heat transfer temperature difference and temperature difference of hot side are used to analyze the influences of heating steam temperature, final effect evaporation temperature, and concentration ratio on thermal performance including gained output ratio (GOR), specific heat transfer area for different preheating configuration. The results show that the internal average effective heat transfer temperature difference determines characteristics of multi-effect distillation system. While for system with similar average effective heat transfer temperature, the temperature difference of hot side is the controlling parameter. And the energy cascade utilization principle shows the controlling attribute in multi-effect distillation thermodynamic system, as GOR is improved mainly due to utilization of the secondary energy and residual energy of the heating steam for preheating process.
{"title":"Thermal optimization research of vertical tube climbing film desalination system","authors":"Yong Yang, Xiaotong Ren, Yiqiao Li, Dayuan Yuan, Yali Guo, Kun Zhang, S. Shen","doi":"10.1093/ijlct/ctad029","DOIUrl":"https://doi.org/10.1093/ijlct/ctad029","url":null,"abstract":"\u0000 Based on the pinch theory and energy cascade utilization principle, the performance of a multi effect shipboard vertical tube climbing film desalination system combined thermal vapour compression with different preheating configuration has been analyzed. The mathematical model is established for thermodynamic simulation, in which various thermodynamic losses caused by boiling point elevation and pressure drop are considered, and the effective heat transfer temperature difference and temperature difference of hot side are used to analyze the influences of heating steam temperature, final effect evaporation temperature, and concentration ratio on thermal performance including gained output ratio (GOR), specific heat transfer area for different preheating configuration. The results show that the internal average effective heat transfer temperature difference determines characteristics of multi-effect distillation system. While for system with similar average effective heat transfer temperature, the temperature difference of hot side is the controlling parameter. And the energy cascade utilization principle shows the controlling attribute in multi-effect distillation thermodynamic system, as GOR is improved mainly due to utilization of the secondary energy and residual energy of the heating steam for preheating process.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":"17 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41257877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Direct transaction between microgrid and distribution network is the most common market transaction mode. With the rapid expansion of business scale, industry development and diversification of service types, it is easy to cause problems such as opaque transaction data between users and easy tampering of transaction data. In order to improve the trading ability of power market in microgrid group, a game algorithm of power trading with microgrid based on residual regression model is proposed. According to the power quality level and power sales strategy, a residual regression model is established to balance the characteristic quantity of electricity price. The quadratic function is used to solve the optimal selling strategy of power sales companies, and the threshold of equilibrium solution is analyzed. The supply and demand model of microgrid is established to optimize the decision variables of electricity price in power sales companies, and the fitness value is obtained by particle swarm optimization. The bidding strategy game model of microgrid power sales company is constructed, and the rules of power transaction settlement are set to realize the transaction settlement between microgrid and distribution network. The experimental results show that the electricity price is stable, the comprehensive income is high, the user income and cost income are moderate, and the profit is high. Thus, it is proved that the proposed method is economical and effective, and the economy of electric energy use is guaranteed while fully considering the self-interest of microgrid.
{"title":"Power Transaction Game Algorithm with Micro Grid Based on Residual Regression Model","authors":"Hongjie Li","doi":"10.1093/ijlct/ctad031","DOIUrl":"https://doi.org/10.1093/ijlct/ctad031","url":null,"abstract":"\u0000 Direct transaction between microgrid and distribution network is the most common market transaction mode. With the rapid expansion of business scale, industry development and diversification of service types, it is easy to cause problems such as opaque transaction data between users and easy tampering of transaction data. In order to improve the trading ability of power market in microgrid group, a game algorithm of power trading with microgrid based on residual regression model is proposed. According to the power quality level and power sales strategy, a residual regression model is established to balance the characteristic quantity of electricity price. The quadratic function is used to solve the optimal selling strategy of power sales companies, and the threshold of equilibrium solution is analyzed. The supply and demand model of microgrid is established to optimize the decision variables of electricity price in power sales companies, and the fitness value is obtained by particle swarm optimization. The bidding strategy game model of microgrid power sales company is constructed, and the rules of power transaction settlement are set to realize the transaction settlement between microgrid and distribution network. The experimental results show that the electricity price is stable, the comprehensive income is high, the user income and cost income are moderate, and the profit is high. Thus, it is proved that the proposed method is economical and effective, and the economy of electric energy use is guaranteed while fully considering the self-interest of microgrid.","PeriodicalId":14118,"journal":{"name":"International Journal of Low-carbon Technologies","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48682941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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