Power Machinery Maintenance Process and its Economic Analysis

2014 ◽  
Vol 889-890 ◽  
pp. 1559-1562 ◽  
Author(s):  
Moonho Jung ◽  
Jae Il Park
Keyword(s):  
Economic Analysis ◽  
Cost Estimation ◽  
Input Data ◽  
Cost Assessment ◽  
Reliable Operation ◽  
Operation And Maintenance ◽  
Power Machinery ◽  
Facility Maintenance ◽  
Maintenance Process

In this study, an analysis is made of facility maintenance process and its modeling for economic analysis. Especially, we are looking after the modeling method for estimating its cost through input data based on facility information. This allows biding for some plant operating and maintenance orders through results of cost estimation and economic analysis. Thus, we can make proper cost sheet of plant operation and maintenance through systematic cost assessment, reliable operation and maintenance related projects in the bid through management. Furthermore, we are going to conduct a case study to apply the above mentioned model.

Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 17-24 ◽  
Author(s):  
HAKIM GHEZZAZ ◽  
LUC PELLETIER ◽  
PAUL R. STUART
Keyword(s):  
Cost Estimation ◽  
Process Model ◽  
Black Liquor ◽  
Pulp Mill ◽  
Value Added ◽  
Economic Assessment ◽  
Extraction Process ◽  
Estimation Methods ◽  
Precipitation Process

The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery options have been calculated using standard cost estimation methods. The results show that the two biorefinery options are profitable for the case study mill and effective at process debottlenecking. The after-tax internal rate of return (IRR) of the lignin precipitation process option was estimated to be 95%, while that of the hemicellulose pre-extraction process option was 28%. Sensitivity analysis showed that the after tax-IRR of the lignin precipitation process remains higher than that of the hemicellulose pre-extraction process option, for all changes in the selected sensitivity parameters. If we consider the after-tax IRR, as well as capital cost, as selection criteria, the results show that for the case study mill, the lignin precipitation process is more promising than the near-neutral hemicellulose pre-extraction process. However, the comparison between the two biorefinery options should include long-term evaluation criteria. The potential of high value-added products that could be produced from lignin in the case of the lignin precipitation process, or from ethanol and acetic acid in the case of the hemicellulose pre-extraction process, should also be considered in the selection of the most promising process option.

A techno-economic analysis for an integrated solar PV/T system with thermal and electrical storage — Case study

2015 ◽  
Author(s):  
A. U. C. D. Athukorala ◽  
W. J. A. Jayasuriya ◽  
S. Ragulageethan ◽  
M. P. G. Sirimanna ◽  
R. A. Attalage ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Solar Pv ◽  
T System

scholarly journals Modelling and Cost Estimation for Conversion of GreenMethanol to Renewable Liquid Transport Fuels via Olefin Oligomerisation

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1046
Author(s):  
Jenna Ruokonen ◽  
Harri Nieminen ◽  
Ahmed Rufai Dahiru ◽  
Arto Laari ◽  
Tuomas Koiranen ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Process Simulation ◽  
Cost Estimation ◽  
Fossil Fuels ◽  
Transport Sector ◽  
Low Carbon ◽  
Fuel Price ◽  
Co2 Emission Reduction ◽  
Electrolytic Hydrogen ◽  
Paris Climate Agreement

The ambitious CO2 emission reduction targets for the transport sector set in the Paris Climate Agreement require low-carbon energy solutions that can be commissioned rapidly. The production of gasoline, kerosene, and diesel from renewable methanol using methanol-to-olefins (MTO) and Mobil’s Olefins to Gasoline and Distillate (MOGD) syntheses was investigated in this study via process simulation and economic analysis. The current work presents a process simulation model comprising liquid fuel production and heat integration. According to the economic analysis, the total cost of production was found to be 3409 €/tfuels (273 €/MWhLHV), corresponding to a renewable methanol price of 963 €/t (174 €/MWhLHV). The calculated fuel price is considerably higher than the current cost of fossil fuels and biofuel blending components. The price of renewable methanol, which is largely dictated by the cost of electrolytic hydrogen and renewable electricity, was found to be the most significant factor affecting the profitability of the MTO-MOGD plant. To reduce the price of renewable fuels and make them economically viable, it is recommended that the EU’s sustainable transport policies are enacted to allow flexible and practical solutions to reduce transport-related emissions within the member states.

scholarly journals Feasibility and techno-economic analysis of stand-alone and grid-connected PV/Wind/Diesel/Batt hybrid energy system: A case study

2021 ◽  
Vol 37 ◽  
pp. 100673
Author(s):  
Barun K. Das ◽  
Majed A. Alotaibi ◽  
Pronob Das ◽  
M.S. Islam ◽  
Sajal K. Das ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Energy System ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
System A
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