Technical and economic analysis of heat exchange with big temperature difference based on heat recovery from power plant exhaust steam

2016 ◽  
Author(s):  
Yu Shi ◽  
Xiaoxi Guo ◽  
Mei Zhu ◽  
Fan Yang ◽  
Xiaofei Hou
Keyword(s):  
Heat Exchange ◽  
Power Plant ◽  
Economic Analysis ◽  
Temperature Difference ◽  
Heat Recovery ◽  
Technical And Economic Analysis

Technical and Economic Analysis of Cogeneration Systems for Refinery Power Plant Applications

2010 ◽  
Author(s):  
J. Hugo Rodri´guez Marti´nez ◽  
Agusti´n Alcaraz Caldero´n ◽  
Luis Iva´n Ruiz Flores ◽  
Roberto Valdez Vargas
Keyword(s):  
Economic Analysis ◽  
Heat Recovery ◽  
Net Present Value ◽  
Energy Requirement ◽  
Cooling Water ◽  
Internal Rate Of Return ◽  
Additional Energy ◽  
Technical Parameters ◽  
Technical And Economic Analysis ◽  
Standard Techniques

This paper shows the main results from a technical and economical study for the implementation of new cogeneration systems in Mexican refineries. At least three cogeneration alternatives to match a 50% additional energy requirement (thermal and electric) for a refinery are analyzed. A balance simulator tool developed specially for the electric and steam refinery systems is used in order to obtain the technical parameters for the alternatives, which allows obtaining system performance indicators such as fuel consumption, cooling water requirement, electric and combined efficiency. Standard techniques as net present value, internal rate of return, and payback period are used for the economic analysis. According to the results, the best alternative was a gas turbine-heat recovery steam generator arrangement fueled by natural gas, including the respective adjustments of the refinery electrical and steam systems.

scholarly journals Technical and Economic Analysis of Modernization of Solar Power Plant: A Case Study from the Republic of Cuba

2022 ◽  
Vol 14 (2) ◽  
pp. 822
Author(s):  
Emiliia Iakovleva ◽  
Daniel Guerra ◽  
Pavel Tcvetkov ◽  
Yaroslav Shklyarskiy
Keyword(s):  
Power Plant ◽  
Economic Analysis ◽  
Power Plants ◽  
Solar Power ◽  
Climatic Conditions ◽  
Solar Power Plant ◽  
Solar Module ◽  
Technical And Economic Analysis ◽  
Solar Power Plants ◽  
The Republic

The problem of increasing the efficiency of existing power plants is relevant for many countries. Solar power plants built at the end of the 20th century require, as their shelf lives have now expired, not only the replacement of the solar modules, but also the modernization of their component composition. This is due to the requirements to improve the efficiency of power plants to ensure the expansion of renewable energy technologies. This article presents a technical and economic analysis of the choice of solar power plant modernization method, which consists of (1) a method for calculating the amount of power generation; (2) the modeling of solar power plants under specific climatic conditions; (3) the analysis of electricity generation using different types of PV modules and solar radiation trapping technologies in Matlab/Simulink; and (4) the technical and economic analysis of a 2.5 MW solar power plant in the Republic of Cuba (in operation since 2015), for which four different modernization options were considered. All the scenarios differ in the depth of modernization; the results of the analysis were compared with the existing plant. The results of the study showed that the different modernization scenarios respond differently to changes in the inputted technical and economic parameters (cost per kWh, inflation rate, losses, and power plant efficiency). The maximum NPV deviations among the considered scenarios are: a 1% increase in inflation reduces NPV by 2%; a decrease in losses from 20% to 10% increases the NPV by 2.5%; a change in cost from EUR 0.05 to EUR 0.1 increases the NPV by more than 3.5 times. The dependence of the economic results was also tested as a function of three factors: solar module efficiency, inflation, and the price per 1 kWh. It was found that the greatest influence on the NPV of the proposed model is the price per 1 kWh. Based on this analysis, an algorithm was developed to choose the most effective scenario for the conditions of the Republic of Cuba for the modernization of the existing power plants.

scholarly journals Techno-Economic Analysis of Natural Gas-Based Polygeneration System of Electricity, Cooling, and Heating

2019 ◽  
Vol 8 (6S3) ◽  
pp. 948-954
Keyword(s):  
Power Plant ◽  
Economic Analysis ◽  
Energy System ◽  
Generation System ◽  
Fiscal Incentives ◽  
Technical And Economic Analysis ◽  
Cold Energy ◽  
Integrated Energy System ◽  
Power Generation System ◽  
Polygeneration System

Some remote and rurar areas in Indonesia have low electrification levels and this poses a undermines their economic development potential. In response to the aforementioned challenges, it is necessary to develop an integrated energy system that produces multi-utilities (polygeneration) in producing energy to meet local needs. The aim of this work is to investigate the technical and economic analysis on a polygeneration system of a gas-fired power plant to produce electricity and heating, and to be integrated with an LNG regasification system for the utilization of cold energy as well. This polygeneration system is located in Manokwari District, West Papua. The polygeneration system was simulated using Unisim Design R390.1 to evaluate the technical performances and its economic analysis was done by using cash flow method with several business schemes, financial and fiscal incentives. The results showed that technically the polygeneration system is able to increase the efficiency of power generation system of a stand-alone power plant, from 32.9% to 59.7%. Economically, the polygeneration system can reduce the electricity tariff of a stand-alone power system from 19.32 US cents/kWh to 12.31 USD cents /kWh.

scholarly journals Technical and economic analysis of retrofitting a post-combustion carbon capture system in a Thai coal-fired power plant

2021 ◽  
Vol 7 ◽  
pp. 308-313
Author(s):  
Thananat Lungkadee ◽  
Thossaporn Onsree ◽  
Suparit Tangparitkul ◽  
Naruphol Janwiruch ◽  
Atipoang Nuntaphan ◽  
...  
Keyword(s):  
Power Plant ◽  
Economic Analysis ◽  
Carbon Capture ◽  
Technical And Economic Analysis
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