Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595535
M. Nguyen, A. Le
These days, steel slag is one of big problem in Vietnam because there are too much steel slag produced from steel industries, especially electric-arc furnace slag. In order to use this by-product in highway, especially in hot mix asphalt, the main objective of this paper is to evaluate the effect of electric-arc furnace slag as coarse aggregate replacement instead of natural aggregate. Three contents of slag were used are 0, 50, and 75%. The evaluated tests include Marshall stability, indirect tensile strength, and resilient modulus test.
{"title":"Performance of Hot Mix Asphalt Concrete When using Electric-Arc Furnace Slag as Natural Coarse Aggregate","authors":"M. Nguyen, A. Le","doi":"10.1109/GTSD.2018.8595535","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595535","url":null,"abstract":"These days, steel slag is one of big problem in Vietnam because there are too much steel slag produced from steel industries, especially electric-arc furnace slag. In order to use this by-product in highway, especially in hot mix asphalt, the main objective of this paper is to evaluate the effect of electric-arc furnace slag as coarse aggregate replacement instead of natural aggregate. Three contents of slag were used are 0, 50, and 75%. The evaluated tests include Marshall stability, indirect tensile strength, and resilient modulus test.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"295 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127562501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595509
Quoc Vo Kien, Q. An, Hiep Le Chi
This paper presents the results of theoretical study on the humidification dehumidification desalination system Based on the Pinch technology, the optimum operating parameters of the system have been determined The results show that, at the same difference minimum temperature in the humidifier and dehumidifier and at the specific spray water and supply water temperatures, the optimum mass flow ratio between the mass flow rate of spray water and the mass flow rate of air has been determined At the optimum mass flow ratio, the heat recovery rate and the gain output ratio are at highest value. The higher spray water and supply water temperatures, the higher optimum mass flow ratio and vice versa. For a $Delta T_{mjn}$, there is a proper spray water temperature range for the highest system performance. The results also show that the reasonable water temperature for humidification dehumidification desalination systems is about $55-S5^{circ}C.$
本文介绍了基于夹点技术的加湿除湿海水淡化系统的理论研究结果，确定了系统的最佳运行参数。结果表明，在加湿和除湿最低温差相同的情况下，在特定的喷雾水和供水温度下，确定了喷雾水质量流量与空气质量流量之间的最佳质量流量比。在最佳质量流量比下，热回收率和增益输出比达到最大值。喷水和供水温度越高，最佳质量流量比越高，反之亦然。对于$Delta T_{mjn}$，有一个适当的喷雾水温范围以获得最高的系统性能。结果还表明，加湿除湿脱盐系统的合理水温约为55- 5^{circ} c
{"title":"Optimizing the Operating Parameters of the Humidification - Dehumidification Desalination System by Pinch Technology","authors":"Quoc Vo Kien, Q. An, Hiep Le Chi","doi":"10.1109/GTSD.2018.8595509","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595509","url":null,"abstract":"This paper presents the results of theoretical study on the humidification dehumidification desalination system Based on the Pinch technology, the optimum operating parameters of the system have been determined The results show that, at the same difference minimum temperature in the humidifier and dehumidifier and at the specific spray water and supply water temperatures, the optimum mass flow ratio between the mass flow rate of spray water and the mass flow rate of air has been determined At the optimum mass flow ratio, the heat recovery rate and the gain output ratio are at highest value. The higher spray water and supply water temperatures, the higher optimum mass flow ratio and vice versa. For a $Delta T_{mjn}$, there is a proper spray water temperature range for the highest system performance. The results also show that the reasonable water temperature for humidification dehumidification desalination systems is about $55-S5^{circ}C.$","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133507787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, a controlled diode bridge clamped three-level inverter topology based on quasi-switched boost network (CDBC-qSBI) is presented. The proposed inverter not only inherits the advantages of traditional qSBIs but also it has the unique features: use of less number of high power passive reactive elements in the intermediate network as well as isolated DC power supply which increases the system size. On the other hand, it is able to provide both buck and boost voltages and produces a required three-phase three-level AC output voltage in a single-stage conversion. The proposed topology has continuous input current and controlled diode bridge clamped three-level inverter to avoid the reverse recovery problem. Circuit analysis and simulation results of the proposed three-level CDBC-qSBI are presented. A 600-W prototype based on a TMS320F28335 digital signal processor is built to verify the operating principle of the three-level CDBC-qSBI.
{"title":"Controlled Diode Bridge Clamped Three-Level Inverter Based on Quasi-Switched Boost Network","authors":"Duc-Tri Do, Minh‐Khai Nguyen, Thanh-Hai Quach, Duy-Thao Nguyen","doi":"10.1109/GTSD.2018.8595564","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595564","url":null,"abstract":"In this paper, a controlled diode bridge clamped three-level inverter topology based on quasi-switched boost network (CDBC-qSBI) is presented. The proposed inverter not only inherits the advantages of traditional qSBIs but also it has the unique features: use of less number of high power passive reactive elements in the intermediate network as well as isolated DC power supply which increases the system size. On the other hand, it is able to provide both buck and boost voltages and produces a required three-phase three-level AC output voltage in a single-stage conversion. The proposed topology has continuous input current and controlled diode bridge clamped three-level inverter to avoid the reverse recovery problem. Circuit analysis and simulation results of the proposed three-level CDBC-qSBI are presented. A 600-W prototype based on a TMS320F28335 digital signal processor is built to verify the operating principle of the three-level CDBC-qSBI.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115720956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595693
Kimhang Vo, Thanhtrung Dang
An experimental on the change of the shape and size of the minichannel evaporators to increase the cooling capacity of the $CO_{2}$ air conditioning cycle was carried out. Two minichannel evaporators with the same heat transfer area were designed with different channel lengths. In this study, the ambient temperature was tested for both evaporators at $32.5^{o}C$. For both cases, the cooler pressure and evaporator pressure are 77 bar and 42 bar, respectively. The results show that the cooling capacity of the evaporator E2 (shorter length) is 6.6 better than that obtained from the evaporator E1 (longer length): the air outlet temperature of E2 is 1.4 t lower than that of E1. In addition, the temperature distribution of the evaporator E2 is better than that of the evaporator E1. The study also concluded that the COP of the E2 is $theta.22$ larger than that obtained from the E1.
{"title":"A Study on Change of the Shape and Size of the Minichannel Evaporators to Enhance the Cooling Capacity of the CO&underscore;2 Air Conditioning Cycle","authors":"Kimhang Vo, Thanhtrung Dang","doi":"10.1109/GTSD.2018.8595693","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595693","url":null,"abstract":"An experimental on the change of the shape and size of the minichannel evaporators to increase the cooling capacity of the $CO_{2}$ air conditioning cycle was carried out. Two minichannel evaporators with the same heat transfer area were designed with different channel lengths. In this study, the ambient temperature was tested for both evaporators at $32.5^{o}C$. For both cases, the cooler pressure and evaporator pressure are 77 bar and 42 bar, respectively. The results show that the cooling capacity of the evaporator E2 (shorter length) is 6.6 better than that obtained from the evaporator E1 (longer length): the air outlet temperature of E2 is 1.4 t lower than that of E1. In addition, the temperature distribution of the evaporator E2 is better than that of the evaporator E1. The study also concluded that the COP of the E2 is $theta.22$ larger than that obtained from the E1.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114493650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595639
Thanhtrung Dang, Kiencuong Giang, Minhhung Doan
This study experimentally investigated the influence of the gravity to the condensation heat transfer of steam in a micro tube condenser with the internal diameter of 0.8 mm. The design capacity of this condenser is 700 W. From the experimental results, the actual capacity of the condenser is the same with the design capacity. In the range of steam from 0.08 to 0.27 g/s, the heat transfer efficiency of the horizontal case is higher than that obtained from the vertical case. However, the difference is not strong. In this study, the maximum heat transfer rate in the horizontal condenser is 673.1 W and the maximum heat transfer coefficient of the horizontal case is 1601.9 W/m2. K. This experiment added the results on the gravity, the heat transfer rate, and the heat transfer coefficient in the field of micro tube condensation.
{"title":"Experiments on Influence of Gravity to Heat Transfer Efficiency in Micro Tube Condenser","authors":"Thanhtrung Dang, Kiencuong Giang, Minhhung Doan","doi":"10.1109/GTSD.2018.8595639","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595639","url":null,"abstract":"This study experimentally investigated the influence of the gravity to the condensation heat transfer of steam in a micro tube condenser with the internal diameter of 0.8 mm. The design capacity of this condenser is 700 W. From the experimental results, the actual capacity of the condenser is the same with the design capacity. In the range of steam from 0.08 to 0.27 g/s, the heat transfer efficiency of the horizontal case is higher than that obtained from the vertical case. However, the difference is not strong. In this study, the maximum heat transfer rate in the horizontal condenser is 673.1 W and the maximum heat transfer coefficient of the horizontal case is 1601.9 W/m2. K. This experiment added the results on the gravity, the heat transfer rate, and the heat transfer coefficient in the field of micro tube condensation.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114934813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595668
Hsin-I Chou, Ching-Ju Liao, Jau-Huai Lu
Electric Static precipitator (ESP) is wildly applied in industrial facility for dust collection. The efficiency of dust collection is high if the gas velocity in front of collecting plates is low and uniform. This paper is to investigate the effect of inlet transition on the flow uniformity in the collecting chamber in different types of inlet. And the results of study are useful for redesign and adjustment of existing ESP
{"title":"The Effect of Inlet Design on the Flow Uniformity Inside ESP","authors":"Hsin-I Chou, Ching-Ju Liao, Jau-Huai Lu","doi":"10.1109/GTSD.2018.8595668","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595668","url":null,"abstract":"Electric Static precipitator (ESP) is wildly applied in industrial facility for dust collection. The efficiency of dust collection is high if the gas velocity in front of collecting plates is low and uniform. This paper is to investigate the effect of inlet transition on the flow uniformity in the collecting chamber in different types of inlet. And the results of study are useful for redesign and adjustment of existing ESP","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115101218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595559
T. N. Le, H. Quyen, T. Phan, N. A. Nguyen, Tan Trieu
When there is a large power imbalance, the frequency of the power system will be declined lower than the allowable value. Therefore, maintaining the frequency within the allowable value is essential. In the case of an emergency control such as a large generator trip, an effective load shedding plan is required to avoid frequency dropping and blackout. This paper introduces a new method for determining the location of the load shedding by using the phase angle sensitivity of two buses. Load shedding is based on the calculation sensitivity from the loads to the generator outage location. The shorter the loads have sensitivity; the larger capacity loads will shed. Experiment results showed the amount of load shedding is lower, the recovery time of frequency and rotor angle are faster than the conventional load shedding.
{"title":"Select Location for Load Shedding In Power System*","authors":"T. N. Le, H. Quyen, T. Phan, N. A. Nguyen, Tan Trieu","doi":"10.1109/GTSD.2018.8595559","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595559","url":null,"abstract":"When there is a large power imbalance, the frequency of the power system will be declined lower than the allowable value. Therefore, maintaining the frequency within the allowable value is essential. In the case of an emergency control such as a large generator trip, an effective load shedding plan is required to avoid frequency dropping and blackout. This paper introduces a new method for determining the location of the load shedding by using the phase angle sensitivity of two buses. Load shedding is based on the calculation sensitivity from the loads to the generator outage location. The shorter the loads have sensitivity; the larger capacity loads will shed. Experiment results showed the amount of load shedding is lower, the recovery time of frequency and rotor angle are faster than the conventional load shedding.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"22 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125855727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595517
A. Hoang, T. Nguyen, M. Nguyen
Steam coil air heater (SCAH) are usually designed and used during oil and/or co-fuel firing conditions in order to prevent acid gas condensation which causes corrosion in a coal-fired power plant. However, a study of large-scale power plant units in Viet Nam has shown that the flue gas temperature is lower than acid dew point temperature even at stable high loads. To prevent gas acid dew point corrosion for 30 years life-cycle of new units in Viet Nam, SCAH is proposed to be operated at stable high loads and its design configured has been spared to achieve the requirement.
{"title":"A Research of Acid Gas Condensation in Large-scale Coal-fired Power Plants","authors":"A. Hoang, T. Nguyen, M. Nguyen","doi":"10.1109/GTSD.2018.8595517","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595517","url":null,"abstract":"Steam coil air heater (SCAH) are usually designed and used during oil and/or co-fuel firing conditions in order to prevent acid gas condensation which causes corrosion in a coal-fired power plant. However, a study of large-scale power plant units in Viet Nam has shown that the flue gas temperature is lower than acid dew point temperature even at stable high loads. To prevent gas acid dew point corrosion for 30 years life-cycle of new units in Viet Nam, SCAH is proposed to be operated at stable high loads and its design configured has been spared to achieve the requirement.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129879599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595539
N. Dung, N. Long, L.Q. Khuong
This paper investigates breakdown voltages of enamel insulation of transformer wire in rice oil, corn oil and peanut oil. Experiments were performed with both new and aged conditions. It was found that vegetable oils show higher breakdown voltages in comparison with mineral oil for both new and aged conditions. Ageing process significantly affected the breakdown voltages of both vegetable oils and mineral oil. Enamel insulation in vegetable oils withstood higher breakdown voltages than in mineral oil. Ageing process had a negative effect on the breakdown voltage of enamel insulation. It greatly reduced the breakdown voltage of enamel insulation. It was also observed that enamel insulation markedly enhanced surface breakdown voltages of pressboard. Moreover, this enhancement is more pronounced in vegetable oils under aged condition.
{"title":"Influence of Vegetable Oils on Breakdown Voltages of Enamel Insulation of Transformer Wire","authors":"N. Dung, N. Long, L.Q. Khuong","doi":"10.1109/GTSD.2018.8595539","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595539","url":null,"abstract":"This paper investigates breakdown voltages of enamel insulation of transformer wire in rice oil, corn oil and peanut oil. Experiments were performed with both new and aged conditions. It was found that vegetable oils show higher breakdown voltages in comparison with mineral oil for both new and aged conditions. Ageing process significantly affected the breakdown voltages of both vegetable oils and mineral oil. Enamel insulation in vegetable oils withstood higher breakdown voltages than in mineral oil. Ageing process had a negative effect on the breakdown voltage of enamel insulation. It greatly reduced the breakdown voltage of enamel insulation. It was also observed that enamel insulation markedly enhanced surface breakdown voltages of pressboard. Moreover, this enhancement is more pronounced in vegetable oils under aged condition.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127417920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.1109/GTSD.2018.8595698
Quang Khanh Ho, C. Pham
Abstract - Self-balancing electric motorcycles have been recently developed by high-tech corporations to reaffirm their vision of “enjoying the freedom of mobility”, i.e. riders will not have to put their feet on the ground when they stop. A stabilization system based on Inertia Wheel Pendulum (IWP) is a potential approach to this new concept motorcycle. The paper focuses on exploring effects of design parameters on dynamic performance of IWP. A prototype of IWP is implemented. The understanding of IWP is validated through simulation results as well as experimental results. The findings have shown that the prototype has been capable of self-balancing under a PID control algorithm.
{"title":"Study on Inertia Wheel Pendulum Applied to Self-Balancing Electric Motorcycle","authors":"Quang Khanh Ho, C. Pham","doi":"10.1109/GTSD.2018.8595698","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595698","url":null,"abstract":"Abstract - Self-balancing electric motorcycles have been recently developed by high-tech corporations to reaffirm their vision of “enjoying the freedom of mobility”, i.e. riders will not have to put their feet on the ground when they stop. A stabilization system based on Inertia Wheel Pendulum (IWP) is a potential approach to this new concept motorcycle. The paper focuses on exploring effects of design parameters on dynamic performance of IWP. A prototype of IWP is implemented. The understanding of IWP is validated through simulation results as well as experimental results. The findings have shown that the prototype has been capable of self-balancing under a PID control algorithm.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"2479 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127477639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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