Pub Date : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635780
Nur Hafizah Tul Huda Ahmad, Mohd Zamri Ibrahim, S. J. Rahman, A. Albani, S. Mohad
This paper presents the conceptual model for 40 kW off-grid UMT Eco Wave Energy System (UEW) to generate the electricity. The idea of this concept is based on the shoreline floater types of wave energy converter. It consists the modelling of a heaving oscillation floater, hydraulic and electric power take off (PTO) system which suitable for Terengganu shoreline. The linear wave theory is applied to model the hydrodynamic behaviour of this system. In addition, the simulation of hydraulic and electric power takes off system via Simhydraulic Software based on Simscape platform product for the Simulink Physical Modelling are also discussed
{"title":"The Development of Wave Energy Converter System Using Hydraulic Power Take Off at Terengganu Shoreline","authors":"Nur Hafizah Tul Huda Ahmad, Mohd Zamri Ibrahim, S. J. Rahman, A. Albani, S. Mohad","doi":"10.23919/ICUE-GESD.2018.8635780","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635780","url":null,"abstract":"This paper presents the conceptual model for 40 kW off-grid UMT Eco Wave Energy System (UEW) to generate the electricity. The idea of this concept is based on the shoreline floater types of wave energy converter. It consists the modelling of a heaving oscillation floater, hydraulic and electric power take off (PTO) system which suitable for Terengganu shoreline. The linear wave theory is applied to model the hydrodynamic behaviour of this system. In addition, the simulation of hydraulic and electric power takes off system via Simhydraulic Software based on Simscape platform product for the Simulink Physical Modelling are also discussed","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"8 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84565017","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635714
A. Putri, B. Leksono
Nyamplung (Calophyllum inophyllum L.) is a potential tree for renewable world energy resources, producing future generation biofuel plants. Propagation technique is required for large scale plantation with highest oil yield of nyamplung. In this study, tissue culture techniques were used for evaluated the optimized nyamplung growth hormone. Shoots rejuvenation were used as explant in MS media enriched with NAA 0.5 mgL−1, 1 mgL−1; 1.5 mgL−1; BAP 1 mgL−1, 2 mgL−1 and 3 mgL−1 and Kinetin 0.15 mgL−1. Shoot and root were induced on the all media used after 10 months incubation. The highest shoot elongation was MS media enriched with 0.5 mgL−1 NAA, 1 mgL−1 BAP and 0.15 mgL−1 Kinetin (10.54 ± 1.98 cm) and the highest root elongation was also in this media (4.65 ± 0.68 cm). Although all the explants rooted after 3 months, in this same media induced a faster root differentiation than the other treatments. NAA concentration higher than 0.5 mgL−1 had no effect on the sprouting process. BAP concentration higher than 3 mgL−1 inhibited callus inductions. The low rates of mortality of rooted plantlets were observed in acclimatization (98 % plants live and grow well up to 6 months of observation). The best hormone concentration of nyamplung media regeneration was expected the highest multiplication for mass micro propagation.
{"title":"In Vitro Growth of Nyamplung (Callophylum inophyllum): The Future Generation Biofule Plants","authors":"A. Putri, B. Leksono","doi":"10.23919/ICUE-GESD.2018.8635714","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635714","url":null,"abstract":"Nyamplung (Calophyllum inophyllum L.) is a potential tree for renewable world energy resources, producing future generation biofuel plants. Propagation technique is required for large scale plantation with highest oil yield of nyamplung. In this study, tissue culture techniques were used for evaluated the optimized nyamplung growth hormone. Shoots rejuvenation were used as explant in MS media enriched with NAA 0.5 mgL<sup>−1</sup>, 1 mgL<sup>−1</sup>; 1.5 mgL<sup>−1</sup>; BAP 1 mgL<sup>−1</sup>, 2 mgL<sup>−1</sup> and 3 mgL<sup>−1</sup> and Kinetin 0.15 mgL<sup>−1</sup>. Shoot and root were induced on the all media used after 10 months incubation. The highest shoot elongation was MS media enriched with 0.5 mgL<sup>−1</sup> NAA, 1 mgL<sup>−1</sup> BAP and 0.15 mgL<sup>−1</sup> Kinetin (10.54 ± 1.98 cm) and the highest root elongation was also in this media (4.65 ± 0.68 cm). Although all the explants rooted after 3 months, in this same media induced a faster root differentiation than the other treatments. NAA concentration higher than 0.5 mgL<sup>−1</sup> had no effect on the sprouting process. BAP concentration higher than 3 mgL<sup>−1</sup> inhibited callus inductions. The low rates of mortality of rooted plantlets were observed in acclimatization (98 % plants live and grow well up to 6 months of observation). The best hormone concentration of nyamplung media regeneration was expected the highest multiplication for mass micro propagation.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"39 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86865159","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635707
Alpesh M. Patel, Sunil Kumar Singal
The various needs of human domiciled in the isolated rural areas can be fulfilled using locally available renewable energy (RE) sources especially when a grid extension becomes economically unviable. The off-grid rural electrification using single RE source may not be economical and reliable due to the intermittent operating characteristics of the major RE sources. The integrated system designed using two or more indigenous RE sources along with the energy storage device can overcome the demerits of single RE source-based system. This paper aims to present a review on implementation methodology of the integrated renewable energy system (IRES) modeling for off-grid rural electrification. In this context, a review on the earlier studies conducted on the IRES for off-grid rural electrification has been carried out, and the discussion on the various configurations, design approach, and the steps involved in modeling methodology of the off-grid IRES has been presented, which can be useful for planning the off-grid IRES to electrify the remote rural areas. This study will be useful to the researchers working on RE sources based stand-alone power generation for remote rural areas.
{"title":"Implementation Methodology of Integrated Renewable Energy System Modeling for Off-grid Rural Electrification: A review","authors":"Alpesh M. Patel, Sunil Kumar Singal","doi":"10.23919/ICUE-GESD.2018.8635707","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635707","url":null,"abstract":"The various needs of human domiciled in the isolated rural areas can be fulfilled using locally available renewable energy (RE) sources especially when a grid extension becomes economically unviable. The off-grid rural electrification using single RE source may not be economical and reliable due to the intermittent operating characteristics of the major RE sources. The integrated system designed using two or more indigenous RE sources along with the energy storage device can overcome the demerits of single RE source-based system. This paper aims to present a review on implementation methodology of the integrated renewable energy system (IRES) modeling for off-grid rural electrification. In this context, a review on the earlier studies conducted on the IRES for off-grid rural electrification has been carried out, and the discussion on the various configurations, design approach, and the steps involved in modeling methodology of the off-grid IRES has been presented, which can be useful for planning the off-grid IRES to electrify the remote rural areas. This study will be useful to the researchers working on RE sources based stand-alone power generation for remote rural areas.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"99 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81037935","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635673
E. Lerch, M. Bokhari, F. Jennrich
Virtual Power Plants (VPP) are one of the most important concepts today for offering flexible control and management of distributed generation and load resources for supporting grid operation. By virtue of aggregating flexible negative and positive generation resources, or 'flex', into a single portfolio and offering it to entities who are customers of 'flex', the VPP needs to offer different value propositions to different customers. For utilities, cities, residential communities, industry parks, or clusters of small & medium enterprises, a VPP not only offers grid stability, new revenue sources, and a more sustainable and greener future, it also raises the question: How can different entities come together to foster the VPP concept and realize a common value creation network. This paper proposes a structured and methodical framework for evaluating the frame conditions, designing multiple VPP conceptual models for different value chain segments, and finally, creating integrated VPP conceptual models that can be used as starting points for detailed financial and operational planning.
{"title":"A Framework for Developing VPP Conceptual Models: From Multiple Dimensions and Stakeholders, Towards a Unified Perspective","authors":"E. Lerch, M. Bokhari, F. Jennrich","doi":"10.23919/ICUE-GESD.2018.8635673","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635673","url":null,"abstract":"Virtual Power Plants (VPP) are one of the most important concepts today for offering flexible control and management of distributed generation and load resources for supporting grid operation. By virtue of aggregating flexible negative and positive generation resources, or 'flex', into a single portfolio and offering it to entities who are customers of 'flex', the VPP needs to offer different value propositions to different customers. For utilities, cities, residential communities, industry parks, or clusters of small & medium enterprises, a VPP not only offers grid stability, new revenue sources, and a more sustainable and greener future, it also raises the question: How can different entities come together to foster the VPP concept and realize a common value creation network. This paper proposes a structured and methodical framework for evaluating the frame conditions, designing multiple VPP conceptual models for different value chain segments, and finally, creating integrated VPP conceptual models that can be used as starting points for detailed financial and operational planning.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"35 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76053975","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635785
Ming-Jong Lin
There is critical equipment operating on the power system such as oil-immersed transformers and circuit breaker, the equipment must be maintained strictly on a regular basis to ensure reliability supply. Any maintenance or accident case of equipment must be fully documented, and safety guarded, but a lot of maintenance record reported forms adopted paper form version for saving, so that some shortcomings have been found such as difficulty in saving and finding data. Another severe deficiency that could not be directly diagnosed with the advantages or disadvantages of the equipment is during the test. To improve the deficiency in conventional recorded paper, a novel record reported form is been designed with the application software of EXCEL in a personal computer. The computerized reported form is proven to improve those shortcomings. Specialty, punctual display of equipment is normal or abnormal during the test. This maintenance record reported form consist of two types of function – one is to establish a maintenance record form to diagnose, print, and save storage, and another browse historic data and print using EXCEL application software. This clearly highlights the model’s report form superiority and can hence assist in circumventing the shortcomings of the conventional paper form of maintenance record on important equipment. To meet the policy of reducing paper use and to cater to the trend of the data storage for small space, prompt efficiency work for maintenance time, to find data, and record data. Especially, it can obtain the result of diagnosis for the equipment during maintenance period timely. This approach will contribute few efforts for the stability and quality of power supply in power system.
{"title":"Maintenance Record Reported Form Computerized Using a Personal Computer","authors":"Ming-Jong Lin","doi":"10.23919/ICUE-GESD.2018.8635785","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635785","url":null,"abstract":"There is critical equipment operating on the power system such as oil-immersed transformers and circuit breaker, the equipment must be maintained strictly on a regular basis to ensure reliability supply. Any maintenance or accident case of equipment must be fully documented, and safety guarded, but a lot of maintenance record reported forms adopted paper form version for saving, so that some shortcomings have been found such as difficulty in saving and finding data. Another severe deficiency that could not be directly diagnosed with the advantages or disadvantages of the equipment is during the test. To improve the deficiency in conventional recorded paper, a novel record reported form is been designed with the application software of EXCEL in a personal computer. The computerized reported form is proven to improve those shortcomings. Specialty, punctual display of equipment is normal or abnormal during the test. This maintenance record reported form consist of two types of function – one is to establish a maintenance record form to diagnose, print, and save storage, and another browse historic data and print using EXCEL application software. This clearly highlights the model’s report form superiority and can hence assist in circumventing the shortcomings of the conventional paper form of maintenance record on important equipment. To meet the policy of reducing paper use and to cater to the trend of the data storage for small space, prompt efficiency work for maintenance time, to find data, and record data. Especially, it can obtain the result of diagnosis for the equipment during maintenance period timely. This approach will contribute few efforts for the stability and quality of power supply in power system.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"83 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82064199","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635723
Q. A. M. Okta Arifianti, M. R. Abidin, E. F. Nugrahani, K. Ummatin
Refuse Derived Fuel (RDF) is a potential alternative energy made from municipal solid waste (MSW). RDF could partially substitute coal in industries that use combustion equipment, for example in cement manufacturing industries. The optimal moisture content for solid fuel is around 10-20%. However, RDF that supplied in one of Indonesian cement industries reached moisture content almost 30%. A solar dryer has been built and tested to reduce the moisture content of RDF. Its parts were a greenhouse type tunnel drying unit with fiber plastic cover and electrical axial fans. In this experiment, the effect of three fan modes on the thermal efficiency were also investigated. The modes were operating one fan, two fans, and without fan. The solar dryer had dimensions of 2 m x 1.5 m x 0.8 m (length x width x height). The mass of RDF was 20 kg. The efficiency was calculated using the measured experimental data, i.e. environment temperature, room temperature, air velocity, solar irradiation, and relative humidity. The result revealed that the lowest moisture content produced by the dryer reached to 14.75%. Furthermore, the thermal efficiency could increase up to about 17.07% by using two fans mode.
{"title":"Experimental Investigation of a Solar Greenhouse Dryer Using Fiber Plastic Cover to Reduce the Moisture Content of Refuse Derived Fuel in an Indonesian Cement Industry","authors":"Q. A. M. Okta Arifianti, M. R. Abidin, E. F. Nugrahani, K. Ummatin","doi":"10.23919/ICUE-GESD.2018.8635723","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635723","url":null,"abstract":"Refuse Derived Fuel (RDF) is a potential alternative energy made from municipal solid waste (MSW). RDF could partially substitute coal in industries that use combustion equipment, for example in cement manufacturing industries. The optimal moisture content for solid fuel is around 10-20%. However, RDF that supplied in one of Indonesian cement industries reached moisture content almost 30%. A solar dryer has been built and tested to reduce the moisture content of RDF. Its parts were a greenhouse type tunnel drying unit with fiber plastic cover and electrical axial fans. In this experiment, the effect of three fan modes on the thermal efficiency were also investigated. The modes were operating one fan, two fans, and without fan. The solar dryer had dimensions of 2 m x 1.5 m x 0.8 m (length x width x height). The mass of RDF was 20 kg. The efficiency was calculated using the measured experimental data, i.e. environment temperature, room temperature, air velocity, solar irradiation, and relative humidity. The result revealed that the lowest moisture content produced by the dryer reached to 14.75%. Furthermore, the thermal efficiency could increase up to about 17.07% by using two fans mode.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"44 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90718383","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635737
E. F. Nugrahani, Q. M. Arifianti, N. A. Pratiwi, Kuntum Khoiro Ummatin
Most fishermen in Gresik, East Java, Indonesia used open air bamboo wicker as a conventional solar fish dryer. However, the dryer has weakness such as need long time to dry and cleanliness issue. The condition raises the idea of designing and manufacturing solar cabinet dryer to improve efficiency and overcome the weaknesses in a conventional fish dryer. The solar cabinet dryer contains 3 kg fish and designed in 3 shelf collectors which are equipped with mirror to maximize solar radiation. The fish dried to below 40% of moisture content based on Indonesian National Standard. Dryer performance is measured from drying rate and efficiency. It found that the drying rate per hour was 18.93%, 20.81%, 20.92% mass/hour for 30°, 45° and 60° mirror angle respectively. Highest efficiency performance of solar cabinet dryer was 34.94%. In cleanliness issue showed a decrease of 25.1 × 106 bacteria colonies/gr on conventional drying to 19.5×106 bacteria colonies/gr on designed solar fish dryer.
{"title":"Experimental Analysis of Solar Cabinet Dryer for Fish Processing in Gresik, Indonesia","authors":"E. F. Nugrahani, Q. M. Arifianti, N. A. Pratiwi, Kuntum Khoiro Ummatin","doi":"10.23919/ICUE-GESD.2018.8635737","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635737","url":null,"abstract":"Most fishermen in Gresik, East Java, Indonesia used open air bamboo wicker as a conventional solar fish dryer. However, the dryer has weakness such as need long time to dry and cleanliness issue. The condition raises the idea of designing and manufacturing solar cabinet dryer to improve efficiency and overcome the weaknesses in a conventional fish dryer. The solar cabinet dryer contains 3 kg fish and designed in 3 shelf collectors which are equipped with mirror to maximize solar radiation. The fish dried to below 40% of moisture content based on Indonesian National Standard. Dryer performance is measured from drying rate and efficiency. It found that the drying rate per hour was 18.93%, 20.81%, 20.92% mass/hour for 30°, 45° and 60° mirror angle respectively. Highest efficiency performance of solar cabinet dryer was 34.94%. In cleanliness issue showed a decrease of 25.1 × 106 bacteria colonies/gr on conventional drying to 19.5×106 bacteria colonies/gr on designed solar fish dryer.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"64 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75434766","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635604
K. Ummatin, D. A. Yakin, Q. O. Arifianti, E. F. Nugrahani
To decrease the amount of solid waste in Gresik city, a solid waste processing machine was installed in final disposal sites. One of the machine products, Refuse Derived Fuel (RDF), a kind of biomass that can be used as coal substitute in cement plants. This program will be implemented successfully if RDF is produced continually and also has lower moisture. The initial design of the machine yielded 3.3 tonnes of RDF per hour with 10% moisture content and caloric value more than 4800 kcal/ kg. Nonetheless, for subsequent process, the machine could produce only 3 tonnes of RDF per day with a significant increase of moisture content (around 30%) and caloric value less than 4800 kcal/ kg. This problem might appear due to the existence of impurity (sand, gravel) in RDF and waste in the wet condition. According to this issue, an alternative technology that could be applied to fix the problems is hydrothermal technology. To execute this idea, a feasibility study should be assessed, especially related to the financial aspect. The assessment would be analyzed by using calculation how much opportunity cost generated from substitution of coal with RDF, Net Present Value (NPV), Payback Period (PBP), and Internal Rate of Return (IRR) against Weighted Average Cost of Capital (WACC). The financial analysis shows that a renewal waste treatment system with hydrothermal technology could improve RDF production capacity and maximize the profit.
{"title":"Financial Analysis of Renewal Waste Treatment System with Hydrothermal Technology (A Case Study in Waste to Zero Project in a Cement Industry)","authors":"K. Ummatin, D. A. Yakin, Q. O. Arifianti, E. F. Nugrahani","doi":"10.23919/ICUE-GESD.2018.8635604","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635604","url":null,"abstract":"To decrease the amount of solid waste in Gresik city, a solid waste processing machine was installed in final disposal sites. One of the machine products, Refuse Derived Fuel (RDF), a kind of biomass that can be used as coal substitute in cement plants. This program will be implemented successfully if RDF is produced continually and also has lower moisture. The initial design of the machine yielded 3.3 tonnes of RDF per hour with 10% moisture content and caloric value more than 4800 kcal/ kg. Nonetheless, for subsequent process, the machine could produce only 3 tonnes of RDF per day with a significant increase of moisture content (around 30%) and caloric value less than 4800 kcal/ kg. This problem might appear due to the existence of impurity (sand, gravel) in RDF and waste in the wet condition. According to this issue, an alternative technology that could be applied to fix the problems is hydrothermal technology. To execute this idea, a feasibility study should be assessed, especially related to the financial aspect. The assessment would be analyzed by using calculation how much opportunity cost generated from substitution of coal with RDF, Net Present Value (NPV), Payback Period (PBP), and Internal Rate of Return (IRR) against Weighted Average Cost of Capital (WACC). The financial analysis shows that a renewal waste treatment system with hydrothermal technology could improve RDF production capacity and maximize the profit.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"694 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76884630","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635674
D. Bellan
This work deals with the analytical solution of transients in single-line-to-ground faults in three-phase power systems through the Clarke transformation. The proposed approach is based on the Thevenin representation of the alpha, beta, and zero component circuits in the Laplace domain. The fault results in a mutual coupling of such circuits. For the single-line-to-ground fault the circuit coupling can be represented by an ideal transformer connected between the alpha and the zero component circuits. The proposed systematic methodology, however, can be readily extended to other kinds of faults. The analytical solution derived in the paper is validated through Matlab simulations in the time domain.
{"title":"Transient Analysis of Single-Line-to-Ground Faults in Three-Phase Circuits Using Clarke Transformation","authors":"D. Bellan","doi":"10.23919/ICUE-GESD.2018.8635674","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635674","url":null,"abstract":"This work deals with the analytical solution of transients in single-line-to-ground faults in three-phase power systems through the Clarke transformation. The proposed approach is based on the Thevenin representation of the alpha, beta, and zero component circuits in the Laplace domain. The fault results in a mutual coupling of such circuits. For the single-line-to-ground fault the circuit coupling can be represented by an ideal transformer connected between the alpha and the zero component circuits. The proposed systematic methodology, however, can be readily extended to other kinds of faults. The analytical solution derived in the paper is validated through Matlab simulations in the time domain.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81613996","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 : 2018-10-01DOI: 10.23919/ICUE-GESD.2018.8635684
D. Lakshmi, A. Layek, P. Muthukumar
A mixed mode forced convection solar dryer (MFSCD) integrated with double pass counterflow solar air heaters was developed in-house for drying of high valued Moringa Oleifera and Stevia rebaudiana leaves. Experiments were carried out to evaluate the convective heat transfer coefficient of the samples in the developed solar dryer and under open sun drying (OSD). From the analysis, the average convective heat transfer coefficient of the leaves in the MFSCD are found to be 4.93 and 4.22 W/m2-K for Moringa and Stevia leaves and in OSD the average values are 1.31 and 1.25 W/m2-K, respectively. The efficiency of the mixed mode solar dryer was found to be 26.4 %. The proximate analysis for the protein and fiber content of the experimental samples concludes that the crude protein and crude fiber of solar dried samples are better than the sun-dried ones.
{"title":"Evaluation of Convective Heat Transfer Coefficient of Herbs Dried in a Mixed Mode Solar Dryer","authors":"D. Lakshmi, A. Layek, P. Muthukumar","doi":"10.23919/ICUE-GESD.2018.8635684","DOIUrl":"https://doi.org/10.23919/ICUE-GESD.2018.8635684","url":null,"abstract":"A mixed mode forced convection solar dryer (MFSCD) integrated with double pass counterflow solar air heaters was developed in-house for drying of high valued Moringa Oleifera and Stevia rebaudiana leaves. Experiments were carried out to evaluate the convective heat transfer coefficient of the samples in the developed solar dryer and under open sun drying (OSD). From the analysis, the average convective heat transfer coefficient of the leaves in the MFSCD are found to be 4.93 and 4.22 W/m2-K for Moringa and Stevia leaves and in OSD the average values are 1.31 and 1.25 W/m2-K, respectively. The efficiency of the mixed mode solar dryer was found to be 26.4 %. The proximate analysis for the protein and fiber content of the experimental samples concludes that the crude protein and crude fiber of solar dried samples are better than the sun-dried ones.","PeriodicalId":6584,"journal":{"name":"2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE)","volume":"24 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77936707","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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