scholarly journals The Influence of Vehicle Operational Cost on Building Material Fare and Basic Price (Case Study of Banjarmasin - Puruk Cahu Route)

2019 ◽  
Vol 6 (3) ◽  
pp. 33-43
Author(s):  
Syahirul Alim ◽  
Mahmud Mahmud ◽  
Muhammad Arsyad
Keyword(s):  
Building Material ◽  
Operational Cost ◽  
Basic Price

scholarly journals Experimental and Numerical Study of a Microcogeneration Stirling Unit under On–Off Cycling Operation

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 801
Author(s):  
Gianluca Valenti ◽  
Aldo Bischi ◽  
Stefano Campanari ◽  
Paolo Silva ◽  
Antonino Ravidà ◽  
...  
Keyword(s):  
Numerical Study ◽  
Thermal Storage ◽  
Primary Energy ◽  
Operational Cost ◽  
Cogeneration Plant ◽  
Economic Optimization ◽  
Viable Option ◽  
Heating Value ◽  
Energy Flows

Stirling units are a viable option for micro-cogeneration applications, but they operate often with multiple daily startups and shutdowns due to the variability of load profiles. This work focused on the experimental and numerical study of a small-size commercial Stirling unit when subjected to cycling operations. First, experimental data about energy flows and emissions were collected during on–off operations. Second, these data were utilized to tune an in-house code for the economic optimization of cogeneration plant scheduling. Lastly, the tuned code was applied to a case study of a residential flat in Northern Italy during a typical winter day to investigate the optimal scheduling of the Stirling unit equipped with a thermal storage tank of diverse sizes. Experimentally, the Stirling unit showed an integrated electric efficiency of 8.9% (8.0%) and thermal efficiency of 91.0% (82.2%), referred to as the fuel lower and, between parenthesis, higher heating value during the on–off cycling test, while emissions showed peaks in NOx and CO up to 100 ppm but shorter than a minute. Numerically, predictions indicated that considering the on–off effects, the optimized operating strategy led to a great reduction of daily startups, with a number lower than 10 per day due to an optimal thermal storage size of 4 kWh. Ultimately, the primary energy saving was 12% and the daily operational cost was 2.9 €/day.

Integrated Strategy for Treatment of Winery Wastewaters Using Flocculation, Ozonation and Fenton’s Oxidation

2009 ◽  
Vol 12 (2) ◽  
Author(s):  
Rui C. Martins ◽  
Fernando J.R. Abegão ◽  
Adrián M.T. Silva ◽  
Rosa M. Quinta-Ferreira
Keyword(s):  
Suspended Solids ◽  
Oxygen Demand ◽  
Operational Cost ◽  
Adequate Treatment ◽  
Integration Strategy ◽  
Fenton’S Oxidation ◽  
Optimal Efficiency ◽  
Fenton's Oxidation ◽  
Ozonation Process

AbstractThe present research is based on a case-study involving the development of an adequate treatment for agro-effluents originating from wineries. Flocculation, Fenton’s oxidation and ozonation processes were investigated in order to define the best integration strategy that may conduce to optimal efficiency of degradation and operational cost. Chemical oxygen demand (COD), total suspended solids (TSS), and total organic carbon (TOC) were some of the parameters used to analyze the performance of these technologies. The higher COD and TSS removals (73% and 94% respectively) were achieved combining the ozonation treatment with the Fenton process. In addition, the respective cost of COD reduction is lower in this case, when compared with other alternatives. Flocculation revealed not to be needed since in the ozonation process the suspended solids are able to be degraded.

Potential use of waste from tree pruning and recovered plastic to obtain a building material: Case study of Merida, Mexico

2020 ◽  
Vol 38 (11) ◽  
pp. 1222-1230
Author(s):  
Ricardo Herbé Cruz-Estrada ◽  
Javier Guillén-Mallette ◽  
Carlos Vidal Cupul-Manzano ◽  
Josué Iván Balam-Hernández
Keyword(s):  
Building Material ◽  
Mechanical Performance ◽  
Low Cost ◽  
Weight Ratio ◽  
Plastic Composite ◽  
Trees And Shrubs ◽  
Tree Pruning ◽  
Potential Use ◽  
Better Than

This work presents a study on the use of wood and plastic wastes generated in abundance in Merida, Mexico, to help to reduce them in order to mitigate environmental deterioration. The use of these wastes is proposed to obtain a low-cost building material. So, the escalation process (i.e., extrusion) at the pilot level to obtain a prototype of a wood–plastic composite (WPC) corrugated sheet to evaluate the technical feasibility to make a low-cost product is reported. A corrugated sheet with recycled high-density polyethylene (R-HDPE) was produced. The R-HDPE was collected from Merida’s Separation Plant. The wood came from the trimmings of different varieties of trees and shrubs that are periodically pruned. WPC sheets with virgin HDPE were prepared to assess its effect on the materials’ mechanical performance. The wood/HDPE weight ratio was 40/60. The performance of the WPC sheets was compared with that of commercial products with similar characteristics, namely acrylic and polyester sheets reinforced with fibreglass, and black asphalt-saturated cardboard sheets. Thus, the effect of natural weathering on the maximum tensile tearing force and on the maximum flexural load of the different types of sheets was evaluated. Although the mechanical performance of the WPC sheets was lower than that of the acrylic and polyacrylic sheets, their performance was much better than that of the cheap black asphalt-saturated cardboard sheets. So, they are a good option to be used as low-cost temporary roofing.

scholarly journals Kemampuan Unit Usaha Yayasan Nurul Hayat Dalam Menunjang Biaya Operasioanal Lembaga Amil Zakat

2015 ◽  
Vol 1 (2) ◽  
pp. 92
Author(s):  
Novalia Nastiti ◽  
Imron Mawardi
Keyword(s):  
Data Collection ◽  
Sampling Method ◽  
Qualitative Approach ◽  
Business Unit ◽  
Operational Cost ◽  
Case Study Method ◽  
Structured Interviews ◽  
Descriptive Case Study ◽  
The Right

Amil zaka in zaka institutions has the right as one of eight ashnaf. Their rights are usually used by zaka institutions as operational cost. However, not all of the intitutions which manage zaka take amil’s right, one of them is Yayasan Nurul Hayat. This institution does not take amil’s right and it is independent in its operational cost. To support this operational cost, Yayasan Nurul Hayat establish business unit with utilize its profit.This study aimed to discover the capability of business unit in supporting operational cost of Yayasan Nurul Hayat. This study used a qualitative approach with descriptive case study method. The selections of informant are using purposive sampling method. Data collection was conducted by semi-structured interviews and documentation. This data is analyzed using descriptive method.The result of this study shows that Yayasan Nurul Hayat Employments’ Salary is taken from business unit’s profit. It is also used to give bonus for employments and grow the business unit of Yayasan Nurul Hayat up. From the result of this study, it can be concluded that the business unit which is developed has great capability to support operational cost of Yayasan Nurul Hayat.

scholarly journals Greedy approach for solving the capacitated vehicle routing problem of liquefied natural gas distribution to power plants

2019 ◽  
Vol 272 ◽  
pp. 01040
Author(s):  
A P A Wijharnasir ◽  
M A Alghasi ◽  
N Pujawan
Keyword(s):  
Vehicle Routing Problem ◽  
Power Plants ◽  
Transportation Cost ◽  
Operational Cost ◽  
Inventory Cost ◽  
Routing Problem ◽  
Greedy Approach ◽  
Cost Distance ◽  
Ship Route

In LNG industries, how to decide the number of ships and their routes for transporting LNG to every demand location efficiently effects the minimization of total operational cost. Therefore, this paper provides a case study in Papua and proposes a model to determine the optimum ship route to transport LNG from an LNG production terminal to thirteen regasification terminals by considering both transportation cost and inventory cost. Distance, power plants demands, transportation cost, and inventory cost were further analyzed by using the greedy approach. In addition, the ship sizes were limited to four alternatives, which were 2500 m3, 7500 m3, 10000 m3, and 23000 m3. The result recommends the utilization of smaller size vessels with more frequent shipments compared to the earlier research on the same case study. It considers that the result will be more adaptable for changing water depth due to changing tides at particular ports.

Removal of organic matter and ammonium from landfill leachate through different scenarios: Operational cost evaluation in a full-scale case study of a Flemish landfill

2017 ◽  
Vol 203 ◽  
pp. 774-781 ◽  
Author(s):  
Violet Oloibiri ◽  
Michael Chys ◽  
Stijn De Wandel ◽  
Kristof Demeestere ◽  
Stijn W.H. Van Hulle
Keyword(s):  
Organic Matter ◽  
Landfill Leachate ◽  
Full Scale ◽  
Cost Evaluation ◽  
Operational Cost

Assessing the Operational Cost of Offshore Sourcing Strategies

2002 ◽  
Vol 13 (2) ◽  
pp. 79-90 ◽  
Author(s):  
Robert H. Lowson
Keyword(s):  
Empirical Study ◽  
Acquisition Cost ◽  
Consumer Goods ◽  
Cost Model ◽  
Supply System ◽  
Operations Strategy ◽  
Operational Cost ◽  
Sourcing Strategies ◽  
The Cost

This paper reports on an empirical study to construct an objective and quantifiable method to assess the cost of sourcing from low wage, foreign suppliers. The work details development of a Total Acquisition Cost Model (TACM) that can be used to quantify the supply system costs associated with such sourcing strategies. In so doing, we explore the sourcing policies of a number of European and North American retailers operating in consumer goods sectors. A detailed case study demonstrates the potential inflexibility cost of offshore as opposed to onshore procurement. The research reveals how an understanding of these various metrics can be used to customize an operations strategy; reflecting the contingencies of the particular trading environment

scholarly journals Radiological implications of using phosphogypsum as building material: a case study of Brazil

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Barbara Paci Mazzilli ◽  
Marcia Pires Campos ◽  
Marcelo Bessa Nisti ◽  
Cátia Heloisa Rosignoli Saueia ◽  
Marcelo Francis Máduar
Keyword(s):  
Building Material

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