2018 4th International Conference on Green Technology and Sustainable Development (GTSD)最新文献

Optimization of Intermediate Pressure of the Two-stage Refrigeration System 两级制冷系统中间压力的优化

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595696

M. Hoang, C. C. Vo, T. V. Nguyen, H. Vu

{"title":"Optimization of Intermediate Pressure of the Two-stage Refrigeration System","authors":"M. Hoang, C. C. Vo, T. V. Nguyen, H. Vu","doi":"10.1109/GTSD.2018.8595696","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595696","url":null,"abstract":"A study was designed to observe effects of intermediate pressure $(P_{M})$ on coefficient of performance (COP) of the two- stage refrigeration systems. In this study, ammonia (NH3) and R404a gases were used as refrigerants because of their popular application in seafood processing plants. According to our observation, most of the two-stage refrigeration systems operated in batch mode with variable temperatures during their operation. Therefore, the theoretical adjustment of the $P_{M}$ was difficult to achieve during the operation. The actual $P_{M}$ of the two-stage refrigeration system depended not only on the operating temperature and the refrigerants in use but also on the ratio between the number of low-pressure and high-pressure compressors. As the ratio changed, the thermal balance of the intermediate tank changed followed by alteration of its temperature and pressure. The practical operating $P_{M}$ of the refrigeration systems was quite different from the calculated theoretical $P_{M}$, especially at the beginning and at the end of each operating cycle. The results showed that at standard operating conditions of the current refrigeration system with condenser temperature $(t_{R})$ at $4theta ^{o}C$, evaporator temperature $(t_{theta }) at-4theta ^{o}C$ and super-cooling temperature (delta T) at $1theta ^{o}C$, optimal intermediate pressures were 2.9 atm at $t_{M}$ (intermediate temperature) $=1theta ^{o}C$ and $6.theta 1$ atm at $t_{M} = theta ^{o}C$ for $NH_{3}$ and $R4theta 4a$ refrigerants, respectively. Reasonable ratios between high and low-pressure condensers of the two-stage refrigeration system with an internal heat exchanger intermediate tank were determined at 1:4 $(N= theta.2649)$ for $NH_{3}$ and 1:3 or 1:4 $(N= theta.2815)$ for $R4theta 4a$. The results presented in this paper may help to provide an important basis for the design and energy savings of the two-stage refrigeration systems.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"54 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":"117165048","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}

引用次数: 0

Service-based Green Growth Model for Vietnam* 越南以服务业为本的绿色增长模式*

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595650

L. T. Giang, Nguyen Xuan Hiep

引用次数: 0

Design Adaptive Controller and Guidance System of an Unmanned Surface Vehicle for Environmental Monitoring Applications 面向环境监测的无人水面飞行器自适应控制器与制导系统设计

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595687

Ngoc-Huy Tran, N. Pham

引用次数: 5

Enantio-selective Crystallization via a Kinetic and Thermodynamic Hybrid Process 通过动力学和热力学混合过程的对映体选择性结晶

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595560

T. L. Minh, H. Lorenz, Andreas Seider-Morgenstern

引用次数: 0

Design A Chess Movement Algorithm and Detect the Movement by Images Classification Using Support Vector Machine Classifier* 设计一种国际象棋移动算法，并使用支持向量机分类器对图像进行分类检测

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595604

Ngo Luong Thanh Tra, Phung Tri Cong, N. D. Anh

引用次数: 0

Blockchain Technology - Opportunities for Emerging Economies 区块链技术,新兴经济体的机会

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595645

Q. Nguyen, Quang Vang Dang

引用次数: 3

Extracting and Purifying Pigment R-phycoerythrin from the Red alga Mastocarpus Stellatus 红藻中r -藻红蛋白的提取与纯化

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595562

Huu Phuoc Trang Nguyen, M. Morançais, J. Fleurence, T. Tran, J. Dumay

引用次数: 7

Investigation on Barbot to Serve Human in Public Space 公共空间中Barbot服务人类的研究

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595543

H. Ngo, T. Nguyen, Hung Nguyen

引用次数: 4

Feasibility for Solid Waste Power Generation at Phu Quoc Island, Vietnam* 在越南富国岛进行固体废物发电的可行性*

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595552

H. Nguyen, Viet-Cuong Vo, Vinh-Nghi Le, T. Phan, T. Tran

{"title":"Feasibility for Solid Waste Power Generation at Phu Quoc Island, Vietnam*","authors":"H. Nguyen, Viet-Cuong Vo, Vinh-Nghi Le, T. Phan, T. Tran","doi":"10.1109/GTSD.2018.8595552","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595552","url":null,"abstract":"Solid waste treatment, improving economic feasibility and improving the environment are urgent issues in Vietnam. Phu Quoc Island, the largest island in Vietnam, is expected to become a national center for ecotourism, recreation and entertainment, however the problem of solid wastes causing environmental pollution is very problematic and will have need the attention of society. The objective of this article is to study the feasibility of a solid waste generation solution for Phu Quoc, to demonstrate the economic and technical feasibility, based on the use of planning data generated for Phu Quoc in the period 2020-2030, environmental data in Vietnam, the application of the world’s technology$cdots$ The research results show that the potential for electricity generation from solid waste at Phu Quoc varies from 4.77.0 MW, the corresponding production cost from 6.4 to 5.3 cents/kWh. The project’s NPV can reach $5.1 million at a rate of 7%; The IRR project is 10.5%; The payback time of the capital is 13.01 years. The net profit margin and the return on investment were respectively 18.9% and 14.9% $cdots$ With this result, we can conclude that the project for the production of electricity from solid waste at Phu Quoc is a high feasibility should be applied in practice.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"293 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":"134209212","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}

引用次数: 1

Optimization of Heterogeneous Electro Fenton Process for Textile Wastewater Treatment 非均相电Fenton工艺处理纺织废水的优化研究

2018 4th International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2018-11-01 DOI: 10.1109/GTSD.2018.8595646

N. D. Duc, Thi Thuy Le An, N. T. Phong

{"title":"Optimization of Heterogeneous Electro Fenton Process for Textile Wastewater Treatment","authors":"N. D. Duc, Thi Thuy Le An, N. T. Phong","doi":"10.1109/GTSD.2018.8595646","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595646","url":null,"abstract":"To produce good textile products, many stable synthetic dyes are invented However, textile wastewater discharged into the environment containing a large amount of dyes which are bio-recalcitrant and stable to heat and solar radiation. These toxic contaminants impact negatively the environment for a long time and poison plant, animal and human. In this study, Heterogeneous Electro Fenton (HEF) system was applied to treat textile wastewater. $Fe_{3}O_{4}-CeO_{2}$ synthesized by co-precipitation method was used as a catalyst and graphite electrodes were chosen for their stability and good conductivity. Three operating factors greatly affected the removal efficiency are current density, pH and catalyst dosage. Response surface methodology was applied to find empirical mathematical models for these factors, then find an accordant operating condition for treatment which provides high removal efficiency and low operating cost. Investigated ranges scaled in previous studies were: current density $(1theta - 2theta nWcm2)$, $pH (3 - 5)$; catalyst dosage $(theta.5-1.5$ gel). At current density of 16.89 $mmathcal {X}cm^{2}, pH$ of 3.15, catalyst dosage of 1.24 g/l, the treatment reached its optimum condition, under that COD and color removal efficiencies are 95.5 % and $ 97.theta $ %, respectively, which met the national standard (QCVN 13:2015/BTNMT, Column A).","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"24 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":"134283602","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}

引用次数: 0