scholarly journals Pengembangan Sekolah Hemat Energi Melalui Aplikasi Teknologi Hybrid

2020 ◽  
Vol 3 (1) ◽  
pp. 15
Author(s):  
Fajar Danur Isnantyo ◽  
A G Tamrin ◽  
Taufiq Lilo Adi Sucipto ◽  
Mardani Mardani ◽  
Suhirman Suhirman
Keyword(s):  
Energy Saving ◽  
Production Capacity ◽  
Mineral Resources ◽  
Department Of Energy ◽  
Fuel Oil ◽  
Hybrid Technology ◽  
Energy Needs ◽  
Technology Applications ◽  
Technological Developments ◽  
Petroleum Reserves

Kebutuhan energi di Indonesia khususnya dan di dunia pada umumnya terus meningkat dikarenakan pertambahan penduduk, pertumbuhan ekonomi, dan pola konsumsi energi itu sendiri. Hal ini diperparah dengan tingginya kebutuhan bahan bakar minyak yang diiringi oleh penurunan kapasitas produksi. Menurut blue print pengelolaan energi nasional yang dikeluarkan Departemen Energi dan Sumber Daya Mineral (DESDM), cadangan minyak bumi di Indonesia akan habis dalam kurun waktu 18 tahun lagi, sedangkan gas diperkirakan akan habis 60 tahun lagi dan batubara 147 tahun terhitung dari tahun 2006. Dengan perkembangan teknologi terkini dan menyongsong pembelajaran Abad 21, maka penting sekali mengembangkan model sekolah hemat energi. Khususnya melalui aplikasi teknologi hybrid yang bisa diimplementasikan di sekolah tersebut. Kegiatan yang dilaksanakan adalah memperkenalkan penggunaan teknologi hybrid tenaga surya dan tenaga angin. Adapun kegiatan pendampingan meliputi: Penjelasan pengembangan model sekolah hemat energi, Pelaksanaan aplikasi teknologi hybrid pada sekolah dan Evaluasi pendampingan sekolah hemat energi. Energy needs in Indonesia in particular and in the world, in general, continue to increase due to population growth, economic growth, and the pattern of energy consumption itself. This situation is compounded by the high demand for fuel oil that is accompanied by a decrease in production capacity. According to the national energy management blueprint issued by the Department of Energy and Mineral Resources (DESDM), petroleum reserves in Indonesia will be exhausted within another 18 years, while gas is expected to run out in 60 years and coal 147 years from 2006. With the latest technological developments and welcoming 21st Century learning, it is very important to develop energy-efficient school models. Especially through the application of hybrid technology that can be implemented at the school. The activity carried out was to introduce the use of solar technology and wind power together. The assistance activities include Explanation of the development of energy-saving school models, Implementation of hybrid technology applications in schools and Evaluation of energy-saving school assistance.

scholarly journals PERSPECTIVES FOR DEVELOPMENT OF TECHNICAL BUILDING STONE- LIMESTONE IN THE REPUBLIC SRPSKA

2015 ◽  
Vol 1 (12) ◽  
Author(s):  
Slobodan Majstorović ◽  
Vladimir Malbašić ◽  
Miodrag Čelebić
Keyword(s):  
Raw Materials ◽  
Production Capacity ◽  
Mineral Resources ◽  
Building Stone ◽  
Raw Material ◽  
Material Base ◽  
Standard Quality ◽  
The Republic ◽  
Fragmentation Of Production ◽  
Republika Srpska

Curent situation of raw material base and study of limestone like construction stone deposits in the Republic of Serbian were relatively poorly considered during the last decades, and the main problems are the following: low production capacity fragmentation of production, needs for raw materials homogenization and delivering of standard quality, undeveloped market, the recession of the domestic economy and the economies in the region, the relatively low level of exploration by many deposits, especially lack of knowledge of the occurrence legality for certain types and quality of raw materials and lack of complete quality indicators for raw material, which sometimes causes the utilization of only the highest quality deposit parts.This paper provides an overview of active quarries in the Republic Srpska with exploitation of limestone like technical building stone and present an attempt to determine the basic quantitative and qualitative characteristics of the raw material and the current working conditions at these quarries. The purpose of such a review would be in an effort to create a clearer picture about production, market, social and other aspects of the limestone exploitation in the Republika Srpska and the realistic possibilities of maintaining and developing of these mineral resources utilization, which can certainlybe interesting for the development of many other industries in the Republic Srpska.

Advanced Turbine Technology Applications Project (ATTAP): Overview, Status, and Outlook

1989 ◽  
Author(s):  
Philip J. Haley
Keyword(s):  
Process Development ◽  
Feasibility Studies ◽  
Turbine Rotor ◽  
Flow Path ◽  
Department Of Energy ◽  
General Motors ◽  
Turbine Engine ◽  
Technology Applications ◽  
Ceramic Components ◽  
Engine Testing

The ATTAP aims at proving the performance and life of structural ceramic components in the hot gas path of an automotive gas turbine engine. This Department of Energy (DOE)-sponsored, NASA-managed program is being addressed by a General Motors (GM) team drawing expertise from the Advanced Engineering Staff (AES) and from Allison. The program includes design, process development and fabrication, rig and engine testing, and iterative development of selected key ceramic components for the AGT-5 engine. A reference powertrain design (RPD) based on this engine predicts acceleration, driveability, and fuel economy characteristics exceeding those of both current engines and the DOE goals. A low-apsect-ratio ceramic turbine rotor design has been successfully engine-demonstrated at 2200°F and 100% speed, including survival of impact and other hostile flow path conditions. Turbine flow path components have been designed for the 2500°F cycle, using improved monolithic ceramics targeted for Year 2 fabrication. Major development/fabrication efforts have been subcontracted at Carborundum, GTE Labs, Corning Glass, Garrett Ceramic Components, and Manville. Feasibility studies were initiated with Ceramics Process Systems and Drexel University.

Biofuels: the next generation

2010 ◽  
Vol 31 (2) ◽  
pp. 79 ◽  
Author(s):  
Grant A Stanley ◽  
Geoff J Dumsday
Keyword(s):  
Renewable Energy ◽  
Energy Security ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Production Capacity ◽  
Renewable Fuel ◽  
Energy Needs ◽  
Substantial Investment ◽  
Continued Use ◽  
Atmospheric Co2 Concentrations

There are many issues with the continued use of fossil fuels for energy, including finite supply, energy security and their contribution to rising atmospheric CO2 concentrations and climate change, leading to substantial, increased interest in the research and development of renewable energy. In 2006, renewable energy provided only 2.5% of global energy needs, which is well short of the national renewable energy targets of many countries for the period 2020-2030, including Australia. For these reasons there is substantial investment in the development of renewable fuel technologies. Bioethanol and biodiesel derived from biomass are alternative fuels for which production capacity and demand is rapidly increasing.

Advanced Turbine Technology Applications Project (ATTAP): Overview, and Ceramic Component Technology Status

1991 ◽  
Author(s):  
Philip J. Haley
Keyword(s):  
High Speed ◽  
High Volume ◽  
Department Of Energy ◽  
High Yield ◽  
Design System ◽  
Ceramic Component ◽  
Forming Process ◽  
Technology Applications ◽  
Ceramic Components ◽  
Monolithic Ceramics

The automotive gas turbine’s (AGT) significant potential payoffs in fuel economy, emissions, and alternate fuels usage continue to motivate development activities worldwide. The U.S. Department of Energy-sponsored, NASA-managed Advanced Turbine Technology Applications Project (ATTAP) focuses on developing critical AGT structural ceramic component technologies. The area of greatest challenge is that of cost-effective, near-net-shape, high-volume, high-yield manufacturing processes. Process physics modeling and Taguchi analyses are affording substantial progress, and new processes are being explored. Laboratory characterization is building a shared materials data base among Allison, Garrett, Government labs, and ceramic manufacturers. General Motors (GM) has logged over 700 test hours with ceramic components in hot gasifier rigs during ATTAP. A key ATTAP milestone was addressed by successfully demonstrating full goal temperature and speed (2500°F rotor inlet at 100% shaft speed) with ceramic components. Fast-fracture ceramic component design tools are well correlated. Although time-dependent data and mechanistic models exist, a validated design system for such phenomena does not, and is a pressing need. Damage tolerance and impact resistance have been substantially addressed through tailored component designs, tougher monolithic ceramics, and increased ceramic strengths. Ceramic turbine rotors are now continuing to run after various substantial impacts, and after chipping damage. Ceramic-ceramic and ceramic-metal interfacing is being addressed by minimizing components’ joints, and by other DOE-sponsored work on joining models, processes, and materials. The extruded regenerator disk is a continuing goal which requires both forming process and materials technology development. Controlling turbine tip clearances and tolerating tip rubs are key technologies. GM has demonstrated clearance control schemes, as well as rotor survivability to high speed/temperature tip rubs. Several noteworthy ceramic materials reflect the rapid progress over the past decade of monolithic ceramics, especially the Si3N4 family. GM forecasts achieving ATTAP engine cyclic durability goals.

scholarly journals New metal Aryloxide complexes as ceramic precursors and Initiators for ROP

2014 ◽  
Vol 70 (a1) ◽  
pp. C911-C911
Author(s):  
Yvens Chérémond ◽  
Katharina Fromm
Keyword(s):  
Energy Saving ◽  
Lithium Ion ◽  
Oxide Materials ◽  
Cyclic Esters ◽  
Long Run ◽  
Energy Needs ◽  
New Energy ◽  
Ceramic Precursors ◽  
Promising Solution ◽  
Organometallic Precursors

In addition to the development of new energy-producing processes, finding new energy-saving procedures offers a promising solution to meet our energy needs in the long run. Indeed, cheap organometallic precursors for oxide materials and catalysis are key technologies for energy saving. A wide variety of metal alkoxides/aryloxides[1] has been used not only as precursors for oxide materials, but also as initiators and catalysts for ring-opening polymerization (ROP). Ceramic oxide materials are widely used for many applications, exceptionally in lithium-ion batteries (LIB) material for the last for these recent decades. Also, due to the use of cyclic esters in the tailoring synthesis of biodegradable and bioresorbable materials, interest in the development of well-defined initiators and catalysts has increased. For both cited reasons, iron-based aryloxide complexes offer many advantages, such as the large abundance of iron, their low toxicity and even their biocompatibility[1]. Aryloxide/alkoxide complexes have been also proposed like good route precursors due to their high solubility, low decomposition temperatures, cross linking ability, ease of modification and commercial availability[2].

Wearable Training-Monitoring Technology: Applications, Challenges, and Opportunities

2017 ◽  
Vol 12 (s2) ◽  
pp. S2-55-S2-62 ◽  
Author(s):  
Marco Cardinale ◽  
Matthew C. Varley
Keyword(s):  
External Load ◽  
Training Load ◽  
Internal Load ◽  
Challenges And Opportunities ◽  
Technology Applications ◽  
Technological Developments ◽  
Training Activities ◽  
The Cost ◽  
Longitudinal Observational Studies ◽  
Subjective Reports

The need to quantify aspects of training to improve training prescription has been the holy grail of sport scientists and coaches for many years. Recently, there has been an increase in scientific interest, possibly due to technological advancements and better equipment to quantify training activities. Over the last few years there has been an increase in the number of studies assessing training load in various athletic cohorts with a bias toward subjective reports and/or quantifications of external load. There is an evident lack of extensive longitudinal studies employing objective internal-load measurements, possibly due to the cost-effectiveness and invasiveness of measures necessary to quantify objective internal loads. Advances in technology might help in developing better wearable tools able to ease the difficulties and costs associated with conducting longitudinal observational studies in athletic cohorts and possibly provide better information on the biological implications of specific external-load patterns. Considering the recent technological developments for monitoring training load and the extensive use of various tools for research and applied work, the aim of this work was to review applications, challenges, and opportunities of various wearable technologies.

scholarly journals A Review of Energy Saving Techniques in Mobile Hydraulic Machines

2018 ◽  
Author(s):  
Sanjar Mirzaliev
Keyword(s):  
Power Systems ◽  
Energy Saving ◽  
Department Of Energy ◽  
Fluid Power ◽  
Increase Energy Efficiency ◽  
Current State ◽  
Hydraulic Machines ◽  
Fluid Power Systems ◽  
Fuel Costs

A fluid power industry powering the agricultural machinery faces big challenges nowadays. An issue of energy saving has become important due to increasing fuel costs and more stringent emissions regulations impacting vehicle development. A recent study conducted by the U.S. Department of Energy shows that the efficiency of fluid power averages 21 percent. This offers a huge opportunity to improve the current state-of-the-art of fluid power machines, in particular to improve the energy consumption of current applications and create innovative solutions. To increase energy efficiency of fluid power systems reduction of throttling losses and potential energy recovery strategies are needed. Aim of this work is to present classification of current energy saving architectures and aid the development of new techniques for mobile fluid power machines.

scholarly journals ANALISA PERBANDINGAN UNJUK KERJA PEMAKAIAN BAHAN BAKAR MOTOR KONVENSIONAL DENGAN MOTOR LISTRIK ULC PLN AREA CENGKARENG

2019 ◽  
Vol 10 (1) ◽  
pp. 64-69
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Alternative Energy ◽  
Fuel Oil ◽  
Electric Motors ◽  
Service Unit ◽  
Quick Service ◽  
Petroleum Reserves

The depletion of petroleum reserves makes people always try to find alternative energy to meet their daily needs. Especially for fuel oil in vehicles whose price is increasing, making scientists to look for alternative energy as a vehicle. Electric motors are one of the alternatives currently being promoted to replace oil-fueled vehicles. There are many types and models of electric motors in the community. The research that will be done is to test the performance of electric motorcycle used by PLN Cengkareng Area for the activities of Quick Service Unit (ULC = Unit Layanan Cepat) and compared with conventional motorcycle fueled by premium oil

scholarly journals Effect of blending biodiesel produced from waste cooking oil on the properties of residual fuel oil: energy saving and the economic cost

RSC Advances ◽  
2021 ◽  
Vol 11 (52) ◽  
pp. 33017-33026
Author(s):  
Mahmoud Abd El-Aziz Mohamed ◽  
Mostafa A. A. Mahmoud ◽  
H. A. El Nagy
Keyword(s):  
Energy Saving ◽  
Low Cost ◽  
Economic Cost ◽  
Waste Cooking Oil ◽  
Fuel Oil ◽  
Cooking Oil ◽  
Residual Fuel Oil ◽  
Wide Range

The mazout properties were improved using ecofriendly ways because of its wide range of applications, abundance and low cost.

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