R. Siregar, M. Adhitya, D. Sumarsono, N. Nazaruddin, G. Heryana
{"title":"Drum brake temperature: A potential energy source for electric buses from the braking temperature","authors":"R. Siregar, M. Adhitya, D. Sumarsono, N. Nazaruddin, G. Heryana","doi":"10.1063/5.0066923","DOIUrl":"https://doi.org/10.1063/5.0066923","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114073210","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}
This paper investigated the technical and economic feasibility of on-board boil-off gas reliquefaction system on a liquefied natural gas tanker ship which has 154,852 m3 cargo tank capacity operated in Tangguh Field Indonesia by comparing three systems available in the market for mini liquefied natural gas liquefaction, i.e. single nitrogen system, ethylene and propylene refrigerant system, and Joule Thomson cycle. All three systems were evaluated through chemical process modelling software and through sensitivity analysis by varying the boil-off gas and liquefied natural gas price comparing the net present value and internal rate of return. The sensitivity analysis result shows that the Joule Thomson cycle is more economic compared than the other two systems within the range of marine gas oil price must not higher than US$640/ton on liquefied natural gas price US$10/mmbtu or liquefied natural gas price must not less than US$7/mmbtu on marine gas oil price US$400/ton.
{"title":"Technical and economic feasibility study of boil-off gas reliquefaction system on an LNG tanker","authors":"Rocky Samuel Julianto Makapuan, Y. Muharam","doi":"10.1063/5.0063914","DOIUrl":"https://doi.org/10.1063/5.0063914","url":null,"abstract":"This paper investigated the technical and economic feasibility of on-board boil-off gas reliquefaction system on a liquefied natural gas tanker ship which has 154,852 m3 cargo tank capacity operated in Tangguh Field Indonesia by comparing three systems available in the market for mini liquefied natural gas liquefaction, i.e. single nitrogen system, ethylene and propylene refrigerant system, and Joule Thomson cycle. All three systems were evaluated through chemical process modelling software and through sensitivity analysis by varying the boil-off gas and liquefied natural gas price comparing the net present value and internal rate of return. The sensitivity analysis result shows that the Joule Thomson cycle is more economic compared than the other two systems within the range of marine gas oil price must not higher than US$640/ton on liquefied natural gas price US$10/mmbtu or liquefied natural gas price must not less than US$7/mmbtu on marine gas oil price US$400/ton.","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121577943","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}
F. Zainuri, D. Sumarsono, M. Adhitya, S. Prasetya, Widiyatmoko, I. Susanto, R. Subarkah, Belyamin
{"title":"Performance analysis of motor for electric vehicle convertion by power quality analyzer","authors":"F. Zainuri, D. Sumarsono, M. Adhitya, S. Prasetya, Widiyatmoko, I. Susanto, R. Subarkah, Belyamin","doi":"10.1063/5.0064491","DOIUrl":"https://doi.org/10.1063/5.0064491","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"28 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116594338","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}
Silpa Asti Nura, Reza Putra, Reviana Revitasari, A. Alimin, M. Ibadurrohman, B. Susanto
{"title":"The effect of blending heavy crude oil and marginal heavy crude oil in Sumatera towards pipeline transportation using flow assurance approach","authors":"Silpa Asti Nura, Reza Putra, Reviana Revitasari, A. Alimin, M. Ibadurrohman, B. Susanto","doi":"10.1063/5.0063436","DOIUrl":"https://doi.org/10.1063/5.0063436","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114253586","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}
Warjito, Budiarso, E. P. Wijaya, K. Celine, Sanjaya B. S. Nasution
{"title":"The effect of nozzle-connector angle on cross-flow turbine performance","authors":"Warjito, Budiarso, E. P. Wijaya, K. Celine, Sanjaya B. S. Nasution","doi":"10.1063/5.0063477","DOIUrl":"https://doi.org/10.1063/5.0063477","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124728264","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}
{"title":"Formaldehyde production process control improvement using multivariable model predictive control","authors":"A. Wahid, M. Z. Fauzi","doi":"10.1063/5.0063444","DOIUrl":"https://doi.org/10.1063/5.0063444","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127521055","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}
Gigih Putro Utomo, Hadi Tresno Wibowo, M. A. Budiyanto
Shipbuilding industry is an industry that is always evolving over time. One of the problems of the shipbuilding industry is a large shipbuilding costs, due to hull shape that requires the bending process to adjust to the shape of the ship. To overcome these problems, a type of vessel designed using the flat surface hull to reduce the production cost of the ship. The purpose of this thesis is to analyze the stability of the designed fast ship that applies a flat surface hull. The objective of this paper is to carried out stability analysis of flat surface hull by simulation through the MaxSurf application. The main dimension of the flat surface hull that used in this study are length overall is 13.9 meter, beam 3.4 meters, and the draft is 0.85 meter. Maxsurf stability is used to find the GZ curve of ships with nine different loading conditions. The result shows the stability if flat surface hull meet the all criteria by International Maritime Organization with angle of maximum GZ above 25 deg.
{"title":"Stability analysis of fast ship design using flat surface hull at the fully load fuel tank condition","authors":"Gigih Putro Utomo, Hadi Tresno Wibowo, M. A. Budiyanto","doi":"10.1063/5.0063472","DOIUrl":"https://doi.org/10.1063/5.0063472","url":null,"abstract":"Shipbuilding industry is an industry that is always evolving over time. One of the problems of the shipbuilding industry is a large shipbuilding costs, due to hull shape that requires the bending process to adjust to the shape of the ship. To overcome these problems, a type of vessel designed using the flat surface hull to reduce the production cost of the ship. The purpose of this thesis is to analyze the stability of the designed fast ship that applies a flat surface hull. The objective of this paper is to carried out stability analysis of flat surface hull by simulation through the MaxSurf application. The main dimension of the flat surface hull that used in this study are length overall is 13.9 meter, beam 3.4 meters, and the draft is 0.85 meter. Maxsurf stability is used to find the GZ curve of ships with nine different loading conditions. The result shows the stability if flat surface hull meet the all criteria by International Maritime Organization with angle of maximum GZ above 25 deg.","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134536881","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}
Indonesia is one of the largest palm oil producers in the world. Acrolein and propylene glycol can be produced from glycerol as a byproduct of palm oil-based biodiesel whereas they are still imported by Indonesia. The purpose of this study is to determine the economic potential of combined acrolein and propylene glycol production from crude glycerol with production capacities of 11,094 tons/year and 70,001 tons/year, respectively. The production gives a Net Present Value of USD 376,600,000, Internal Rate of Return of 149.94%, Payback Period of 1.26 years, Profitability Index of 8.22. The cessation of acrolein and propylene glycol imports can Indonesia's foreign exchange nearly USD 207,427,000/year where the domestic demand can be fulfilled by the plant of combined products proposed in the present work.
{"title":"Economic potential of the manufacture of acrolein and propylene glycol from glycerol","authors":"D. Supramono, J. A. Ashshiddiq","doi":"10.1063/5.0064725","DOIUrl":"https://doi.org/10.1063/5.0064725","url":null,"abstract":"Indonesia is one of the largest palm oil producers in the world. Acrolein and propylene glycol can be produced from glycerol as a byproduct of palm oil-based biodiesel whereas they are still imported by Indonesia. The purpose of this study is to determine the economic potential of combined acrolein and propylene glycol production from crude glycerol with production capacities of 11,094 tons/year and 70,001 tons/year, respectively. The production gives a Net Present Value of USD 376,600,000, Internal Rate of Return of 149.94%, Payback Period of 1.26 years, Profitability Index of 8.22. The cessation of acrolein and propylene glycol imports can Indonesia's foreign exchange nearly USD 207,427,000/year where the domestic demand can be fulfilled by the plant of combined products proposed in the present work.","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132889843","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}
R. Hantoro, E. Septyaningrum, Bariz Irfan Ridho, A. W. Mahmashani
{"title":"Response analysis of pendulum and pontoon on ocean wave energy conversion system (OWCS) – Double pendulum system","authors":"R. Hantoro, E. Septyaningrum, Bariz Irfan Ridho, A. W. Mahmashani","doi":"10.1063/5.0063849","DOIUrl":"https://doi.org/10.1063/5.0063849","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124999226","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}
Naufal Yudha Prawira, M. A. Andira, M. A. Budiyanto
{"title":"The effect of depth variations of stern foil on high speed craft with computational fluid dynamics method","authors":"Naufal Yudha Prawira, M. A. Andira, M. A. Budiyanto","doi":"10.1063/5.0063468","DOIUrl":"https://doi.org/10.1063/5.0063468","url":null,"abstract":"","PeriodicalId":422976,"journal":{"name":"THE 5TH INTERNATIONAL TROPICAL RENEWABLE ENERGY CONFERENCE (THE 5TH iTREC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129682382","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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