Pub Date : 2018-11-27DOI: 10.33322/POWERPLANT.V6I1.71
R. Jurnal
Suatu wacana untuk kemandirian bangsa dalam memproduksi alat utama sistem persenjataan atau alut sista dan alat utama mitigasi dan penanggungan bencana (alam) merupakan agenda nasional yang perlu mendapat dukungan dari berbagai bidang teknologi. Termasuk juga didalamnya perencanaan dan tahapan pencapaian yang sistematis dan terpadu. Maka tindak lanjutnya perlu adanya strategi bagaimana membangun dan mengembangkan industri Bidang Teknologi Material Guna Mendukung Industri Pertahanan dan Keamanan Nasional dan Mitigasi Bencana. Kajian terkait industry material hankam dan kebencanaan dari sisi pasar satu pola pikir bagaimana suatu industry matrial yang dapat mendukung industry hankam dan industry kebencanaan yang dipasar sangat dibutuhkan.
{"title":"KAJIAN TERKAIT INDUSTRI MATERIAL HANKAM DAN KEBENCANAAN DARI SISI PASAR","authors":"R. Jurnal","doi":"10.33322/POWERPLANT.V6I1.71","DOIUrl":"https://doi.org/10.33322/POWERPLANT.V6I1.71","url":null,"abstract":"Suatu wacana untuk kemandirian bangsa dalam memproduksi alat utama sistem persenjataan atau alut sista dan alat utama mitigasi dan penanggungan bencana (alam) merupakan agenda nasional yang perlu mendapat dukungan dari berbagai bidang teknologi. Termasuk juga didalamnya perencanaan dan tahapan pencapaian yang sistematis dan terpadu. Maka tindak lanjutnya perlu adanya strategi bagaimana membangun dan mengembangkan industri Bidang Teknologi Material Guna Mendukung Industri Pertahanan dan Keamanan Nasional dan Mitigasi Bencana. Kajian terkait industry material hankam dan kebencanaan dari sisi pasar satu pola pikir bagaimana suatu industry matrial yang dapat mendukung industry hankam dan industry kebencanaan yang dipasar sangat dibutuhkan.","PeriodicalId":293768,"journal":{"name":"Power Plant","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126340037","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 : 2018-11-27DOI: 10.33322/POWERPLANT.V6I1.75
R. Jurnal
Dalam artikel ini kami melakukan analisa pengaruh delapan jenis kegagalan terhadap kW/Ton chiller dengan menggunakan regresi satu variabel. Kemudian hasil ini kami bandingkan dengan yangdiperoleh dalam penelitian lain. Hasilnya adalah bahwa tidak semua kegagalan dapat dideteksi dengan perubahan nilai kW/Ton chiller dan tidak semua kegagalan menyebabkan naiknya konsumsikW/Ton chiller. Selain hal ini, jenis metode regresi dan satuan yang digunakan juga berpengaruh terhadap hasil kW/Ton chiller.
{"title":"PENGARUH KEGAGALAN TERHADAP KINERJA CHILLER","authors":"R. Jurnal","doi":"10.33322/POWERPLANT.V6I1.75","DOIUrl":"https://doi.org/10.33322/POWERPLANT.V6I1.75","url":null,"abstract":"Dalam artikel ini kami melakukan analisa pengaruh delapan jenis kegagalan terhadap kW/Ton chiller dengan menggunakan regresi satu variabel. Kemudian hasil ini kami bandingkan dengan yangdiperoleh dalam penelitian lain. Hasilnya adalah bahwa tidak semua kegagalan dapat dideteksi dengan perubahan nilai kW/Ton chiller dan tidak semua kegagalan menyebabkan naiknya konsumsikW/Ton chiller. Selain hal ini, jenis metode regresi dan satuan yang digunakan juga berpengaruh terhadap hasil kW/Ton chiller.","PeriodicalId":293768,"journal":{"name":"Power Plant","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133095499","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 : 2018-11-27DOI: 10.33322/powerplant.v6i1.76
R. Jurnal
Untuk meningkatkan kapasitas efek refrigerasi dari sistem refrigerasi kompresi uap telah dikembangkan teknologi penukar kalor subcooling. Peningkatkan kapasitasnya tergantung pada efektivitas penukar kalor liquid suctionnya. Refrigerant R22 adalah refrigerant yang merusak ozon, dan R404A adalah refrigerant yang tidak merusak ozon. Pada penelitian eksperimentah ini akan dilakukan dengan tujuan untuk mengetahui karakteristik R404A sebagai substitusi dari R22. Analisis kinerja pengaruhnya ditinjau dari efektvitas penukar kalor subcooling liquid suction terhadap perubahan rasio tekanan kompresor, COP, RCI, derajad sub cooling terhadap COP. Dari penelitian diperoleh hasil bahwa temperatur evaporator pada kondisi stabil dengan R404A lebih rendah dari pada R22 baik menggunakan atau tanpa penukar kalor subcool, kapasitas refrigerasi R22 lebih besar daripada menggunakan R404A. Kerja kompresor dengan refrigerant campuran R290/R600a lebih besar daripada R404a, adanya subcool kerja compressor reltif tidak berubahCOP dengan campuran R290/R600a lebih besar daripada R404a, dan adanya subcool akan mengakibatkan COP menurun. Secara umum dapat dikatakan bahwa R404A dapat digunakan sebagai pengganti dari R22
{"title":"STUDI EKSPERIMENTAL KINERJA CLOD STRORAGE MINI DENGAN REFRIGERANT R2 DAN R404A","authors":"R. Jurnal","doi":"10.33322/powerplant.v6i1.76","DOIUrl":"https://doi.org/10.33322/powerplant.v6i1.76","url":null,"abstract":"Untuk meningkatkan kapasitas efek refrigerasi dari sistem refrigerasi kompresi uap telah dikembangkan teknologi penukar kalor subcooling. Peningkatkan kapasitasnya tergantung pada efektivitas penukar kalor liquid suctionnya. Refrigerant R22 adalah refrigerant yang merusak ozon, dan R404A adalah refrigerant yang tidak merusak ozon. Pada penelitian eksperimentah ini akan dilakukan dengan tujuan untuk mengetahui karakteristik R404A sebagai substitusi dari R22. Analisis kinerja pengaruhnya ditinjau dari efektvitas penukar kalor subcooling liquid suction terhadap perubahan rasio tekanan kompresor, COP, RCI, derajad sub cooling terhadap COP. Dari penelitian diperoleh hasil bahwa temperatur evaporator pada kondisi stabil dengan R404A lebih rendah dari pada R22 baik menggunakan atau tanpa penukar kalor subcool, kapasitas refrigerasi R22 lebih besar daripada menggunakan R404A. Kerja kompresor dengan refrigerant campuran R290/R600a lebih besar daripada R404a, adanya subcool kerja compressor reltif tidak berubahCOP dengan campuran R290/R600a lebih besar daripada R404a, dan adanya subcool akan mengakibatkan COP menurun. Secara umum dapat dikatakan bahwa R404A dapat digunakan sebagai pengganti dari R22","PeriodicalId":293768,"journal":{"name":"Power Plant","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117026652","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 : 2018-11-27DOI: 10.33322/powerplant.v6i1.70
R. Jurnal
One of the power plants in the labor system is hydropower, which is a power plant by utilizing water resources as its working fluid. In the operation of the hydropower requires high reliability sothat the energy production contuinitas to the load center or to the power system network can be more optimum. One of the components in the hydropower plant is penstock. Closed pipeline, whether it is laminar or turbulent, must have head losses. Head losses on penstock is a phenomenon of losses on the penstock so as to make the head value on the hydropower becomes reduced. At Penstock unit III PLTA Ir. H. Djuanda there are two phenomenon of head losses, namely: head losses major caused by friction penstock against water and minor head losses in the form of bend 900 with radius 4.375 m and 11.3 m from the axis penstock. Temperature changes affect the size of head losses, but they do not significantly affect penstock efficiency. At a temperature of 240C and a flow rate of 5m / s obtained a total head losses of 0606 m so as to make the potential of turbine inlet power down to 31,247 MW or 99.21%.
{"title":"ANALISIS HEAD LOSSES PADA PENSTOCK UNIT III DI PERUM JASA TIRTA II UNIT JASA PEMBANGKIT PLTA IR. H. DJUANDA","authors":"R. Jurnal","doi":"10.33322/powerplant.v6i1.70","DOIUrl":"https://doi.org/10.33322/powerplant.v6i1.70","url":null,"abstract":"One of the power plants in the labor system is hydropower, which is a power plant by utilizing water resources as its working fluid. In the operation of the hydropower requires high reliability sothat the energy production contuinitas to the load center or to the power system network can be more optimum. One of the components in the hydropower plant is penstock. Closed pipeline, whether it is laminar or turbulent, must have head losses. Head losses on penstock is a phenomenon of losses on the penstock so as to make the head value on the hydropower becomes reduced. At Penstock unit III PLTA Ir. H. Djuanda there are two phenomenon of head losses, namely: head losses major caused by friction penstock against water and minor head losses in the form of bend 900 with radius 4.375 m and 11.3 m from the axis penstock. Temperature changes affect the size of head losses, but they do not significantly affect penstock efficiency. At a temperature of 240C and a flow rate of 5m / s obtained a total head losses of 0606 m so as to make the potential of turbine inlet power down to 31,247 MW or 99.21%.","PeriodicalId":293768,"journal":{"name":"Power Plant","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114643013","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 : 2018-11-27DOI: 10.33322/POWERPLANT.V6I1.67
Redaksi Tim Jurnal
Superheater is a main part of boiler that serves as one of steam temperature riser after water evaporated by heat inside a boiler. The steam comes out from boiler drum, by utilizing hot air flowinside boiler. Superheater tube is a very important part of process inside the plant, with a high operating temperature of 540°C (in PLTU Teluk Sirih). Because of this, the tube will be maintained by inspection on each scheduled shutdown. Leakages often occur in platen tube of superheater, exactly at its bend or elbow tube. To know causes of the leakages of the part, we conducted observation analysis i.e., visual observation (metallographic testing), spectrometry and hardness test. From the metallographic test analysis, pearlite and ferrite phases present. At the leakage part, it could be observed the tube has lost much of pearlite phase caused by heating. Pearlite micro structure indicates hardness of a material. In spectrometry test of the leaked tube sample using ASTM SA213 T22 standard, value of carbon rises very high by 0.148 from normal value, 0.15 at maximum. We also obtained from it average hardness of 178 HB (ASTM standard). From analysis of the superheater platen tube, damage caused by abrasion of bad materials hit the tube and decreasing pearlite phase caused by temperature changes. Tiny parts of the tube that hit by steam fell eroded and over time the tube broken. Another thing we can conclude is burst of fire in boiler may cause thinning and tube leakage.
过热器是锅炉的重要组成部分，是锅炉内部水分蒸发后的蒸汽温度提升器之一。蒸汽利用锅炉内部的热空气从锅炉汽包中排出。过热器管是工厂内部过程中非常重要的一部分，其工作温度高达540°C (PLTU Teluk Sirih)。因此，管道将在每次计划关闭时进行检查。过热器的压板管经常发生泄漏，泄漏恰恰发生在压板管的弯管或弯管处。为了了解零件泄漏的原因，我们进行了观察分析，即目测(金相测试)、光谱分析和硬度测试。从金相测试分析来看，存在珠光体和铁素体相。在泄漏处，可以观察到由于加热导致的大量珠光体相损失。珠光体微观结构表明材料的硬度。在用ASTM SA213 T22标准对漏管样品进行光谱测定时，碳的值比正常值上升了0.148，最大值为0.15。得到的平均硬度为178 HB (ASTM标准)。通过对过热器压板管的分析，发现不良物质对压板管的磨损和温度变化导致的珠光体相减少。管子的微小部分被蒸汽侵蚀，随着时间的推移，管子破裂了。我们可以得出的另一件事是，锅炉着火可能会导致变薄和管道泄漏。
{"title":"ANALISA KEGAGALAN PLATEN TUBE SUPERHEATER PLTU TELUK SIRIH","authors":"Redaksi Tim Jurnal","doi":"10.33322/POWERPLANT.V6I1.67","DOIUrl":"https://doi.org/10.33322/POWERPLANT.V6I1.67","url":null,"abstract":"Superheater is a main part of boiler that serves as one of steam temperature riser after water evaporated by heat inside a boiler. The steam comes out from boiler drum, by utilizing hot air flowinside boiler. Superheater tube is a very important part of process inside the plant, with a high operating temperature of 540°C (in PLTU Teluk Sirih). Because of this, the tube will be maintained by inspection on each scheduled shutdown. Leakages often occur in platen tube of superheater, exactly at its bend or elbow tube. To know causes of the leakages of the part, we conducted observation analysis i.e., visual observation (metallographic testing), spectrometry and hardness test. From the metallographic test analysis, pearlite and ferrite phases present. At the leakage part, it could be observed the tube has lost much of pearlite phase caused by heating. Pearlite micro structure indicates hardness of a material. In spectrometry test of the leaked tube sample using ASTM SA213 T22 standard, value of carbon rises very high by 0.148 from normal value, 0.15 at maximum. We also obtained from it average hardness of 178 HB (ASTM standard). From analysis of the superheater platen tube, damage caused by abrasion of bad materials hit the tube and decreasing pearlite phase caused by temperature changes. Tiny parts of the tube that hit by steam fell eroded and over time the tube broken. Another thing we can conclude is burst of fire in boiler may cause thinning and tube leakage.","PeriodicalId":293768,"journal":{"name":"Power Plant","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034145","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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