scholarly journals Liquid fuel price adjustment in Greece: A two-stage, threshold cointegration approach

2020 ◽  
Vol 22 ◽  
pp. e00171
Author(s):  
Stavros Malkidis ◽  
Stilianos Fountas
Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 968
Author(s):  
Sam Van Holsbeeck ◽  
Sättar Ezzati ◽  
Dominik Röser ◽  
Mark Brown

Research Highlights: A set of 128 potential bioenergy facility locations is established and evaluated based on the transport cost to select optimal locations. Background and Objectives: The identification of optimal facility locations to process recovered forest biomass is an important decision in designing a bioenergy supply chain at the strategic planning level. The result of this analysis can affect supply chain costs and the overall efficiency of the network, due to the low density and dispersed nature of forest biomass and the high costs associated with its logistics operations. In this study, we develop a two-stage decision support system to identify the optimal site locations for forest biomass conversion based on biomass availability, transport distance and cost. Materials and Methods: In the first stage, a GIS-based analysis is designed to identify strategic locations of potential bioenergy sites. The second stage evaluates the most cost-effective locations individually using a transportation cost model, based on the results from stage one. The sensitivity of inputs, such as maximum allowable transport cost, the distance of transport and their relations to the profit balance, and changes in fuel price are tested. The method is applied to a real case study in the state of Queensland, Australia. Results and Conclusions: The GIS analysis resulted in 128 strategic candidate locations being suggested for bioenergy conversion sites. The logistics analysis estimated the optimal cost and transportation distance of each one of the locations and ranked them according to the overall performance between capacities of 5 and 100 MW.


2018 ◽  
Vol 3 (48) ◽  
pp. 13705-13711 ◽  
Author(s):  
Lisheng Guo ◽  
Yu Cui ◽  
Peipei Zhang ◽  
Xiaobo Peng ◽  
Yoshiharu Yoneyama ◽  
...  

2013 ◽  
Vol 34 (2) ◽  
pp. 3319-3326 ◽  
Author(s):  
V. Mahendra Reddy ◽  
Darshan Sawant ◽  
Darshan Trivedi ◽  
Sudarshan Kumar
Keyword(s):  

2015 ◽  
Vol 29 (5) ◽  
pp. 3127-3133 ◽  
Author(s):  
Xian Li ◽  
Dedy Eka Priyanto ◽  
Ryuichi Ashida ◽  
Kouichi Miura

2013 ◽  
Vol 448-453 ◽  
pp. 3066-3072
Author(s):  
Li Ming Du

A compact autothermal reformer suitable for liquid fuel for instance methanol et al. was developed. The fuel reformer was combined with polymer electrolyte membrane fuel cells (PEM FC) and a system test of the process chain was successfully performed. The fuel processor consists of a fuel evaporating step, two-stage reformer and a two-stage reactor of water gas shift (WGS, one for high temperature water gas shift and the other for low temperature water gas shifter) and a four-stage preferential oxidation (PROX) reactor and some internal heat exchanger in order to achieve optimized heat integration. The fuel processor is designed to provide enough hydrogen for 75kWel fuel cells. After the initial step of methanol ATR, CO WGS and CO PROX steps are used for 'clean-up' CO. The exhaust gas from FC anode feedback to the fuel processor to vaporizes the feedstock of methanol and water by a catalytic combusting-evaporator. The hydrogen source system can produce hydrogen 70.5 m3/hr and its specific gravity power and specific volume power reach 255W/kg and 450W/L respectively. During three hours coupling experiment, the fuel processing system and the fuel cells all has been running smoothly. The volume concentration of H2 and CO in product gas (dry basis) was kept in 53% and 20ppm respectively, completely meeting the requirements of PEM fuel cells. The conversion efficiency of the hydrogen producing system based on LHV of fuel and hydrogen can exceed 95.85%. The fuel cells stacks put up strong resistance to CO and its maximum electronic load to the fuel cells reaches 75.5kW. It indicates that it is feasible technically for supplying hydrogen for Proton Exchange Membrane Fuel Cells by catalytic reforming of hydrogen-rich liquid fuel on-board or on-site.


2016 ◽  
Vol 34 (1) ◽  
pp. 1
Author(s):  
Pantjar Simatupang ◽  
Supena Friyatno

<strong>English</strong><br />This study aims to estimate quantitative impacts of fuel price adjustment on prices of agribusiness inputs and outputs, inflation and household expenditures, farm profitability and farmers’ welfare as well as Gross Domestic Products form agriculture sector as the key parameters in designing policies related with fuel price adjustment to be conducted by the Government in the future. This study applies an Input-Output analysis (National Input-Output Table 2005). Micro agribusiness survey was also conducted to check validity of the macro secondary data. The Input-Output analysis shows if fuel price is raised by 100% then the agribusiness profitability will decrease by around 0.095–0.142% for food and horticulture farms, 0.052–0.141% for estate crops farms, 0.537-0.756% for livestock farms and 0.058–0.223% for post-harvest and processing business. Inflation elasticity is 0.044%. If the fuel price is raised by 1% then inflation will increase by 0.044%. Inflation rate can be seen as the increase in the household cost of living if there is no change in quantity of the consumption. Accordingly, if the fuel price is indeed must be increased to reduce the budget expense of the fuel subsidy and to improve energy use efficiency then it should be conducted gradually, say 10% per occasion, such that it would not have significant impacts on agricultural performance as well as farmers’ and rural people’s welfare. It is regrettable to see the historical experience that the government tends to postpone adjusting the fuel price, perhaps for political reason, but in the end has to rise fuel price sharply causing significant negative impacts on agricultural performances as well as farmers’ welfare.<br /><br /><strong>Indonesia</strong><br />Penelitian ini dilakukan untuk memperoleh dugaan dampak perubahan harga BBM terhadap harga sarana, prasarana, dan hasil usaha pertanian, serta kinerja sektor pertanian yang merupakan parameter kunci dalam perumusan kebijakan terkait dengan penyesuaian harga BBM yang kemungkinan besar masih akan harus dilakukan pemerintah. Metode yang digunakan untuk menjawab tujuan tersebut adalah analisis input-output (Tabel IO Nasional tahun 2005). Survei mikro usaha pertanian juga dilakukan sebagai validasi kelogisan hasil analisis IO. Analisis input-output menunjukkan bahwa apabila harga BBM ditingkatkan 100% maka profitabilitas usaha akan menurun sekitar 0,095–0,142% untuk usaha tanaman pangan dan hortikultura, sekitar 0,052–0,141% untuk usaha perkebunan, sekitar 0,537–0,756% untuk usaha peternakan, dan sekitar 0,058–0,223% untuk usaha pascapanen dan pengolahan hasil pertanian. Elastisitas inflasi terhadap harga BBM adalah 0,044%. Apabila harga BBM ditingkatkan 1%, inflasi akan meningkat 0,044%. Inflasi dapat pula dipandang sebagai peningkatan biaya hidup atau pengeluaran konsumsi penduduk bila tidak ada perubahan kuantitas konsumsi. Oleh karena itu, kalau memang harus dilakukan guna mengurangi beban anggaran subsidi dan mendorong efisiensi penggunaan energi, kebijakan penyesuaian harga BBM sebaiknya dilakukan secara bertahap, misalnya 10% tiap kali peningkatan, sehingga dampaknya tidak berpengaruh nyata terhadap kinerja sektor pertanian maupun terhadap kesejahteraan petani dan penduduk perdesaan secara umum. Namun, pengalaman dari masa lalu menunjukkan bahwa pemerintah cenderung menunda-nunda kenaikan harga BBM, barangkali karena alasan politik, sehingga terpaksa melakukan kenaikan harga BBM secara tajam dan dampaknya terhadap kinerja usaha pertanian dan kesejahteraan petani pun akan besar.


1998 ◽  
Vol 39 (9) ◽  
pp. 869-875 ◽  
Author(s):  
V.R. Rustamov ◽  
K.M. Abdullayev ◽  
E.A. Samedov

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