Research on Additional Specific Consumption Distribution of Biomass Direct Combustion Power Plant

2011 ◽  
Vol 347-353 ◽  
pp. 631-634
Author(s):  
Qin Liang Tan ◽  
Cai Juan Zhang ◽  
Xiao Ying Hu ◽  
Li Gang Wang ◽  
Qiang Lu ◽  
...  
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Second Law Of Thermodynamics ◽  
Operating Conditions ◽  
Specific Consumption ◽  
Pollutant Emissions ◽  
Design Parameters ◽  
Direct Combustion ◽  
Analysis Theory ◽  
Biomass Power Plant

Biomass direct combustion power generation is the most simple but effective way in dealing with environmental issues and energy crisis. A comprehensive diagnosis with accurate evaluation of energy saving potential of a given biomass power plant is of great importance in lowing the cost of generating electricity, reducing the consumption of energy and pollutant emissions [1]. This paper throws light upon an innovative energy consumption diagnosis method-the specific consumption analysis theory, which is based on the First and Second law of thermodynamics [2,3]. Taking a given biomass power plant of National Energy Group as an example, mathematical models are made based on all the components and processes. The specific consumption analysis theory is employed to calculate the specific consumption within the biomass power plant using design parameters under design operating conditions, thus demonstrating the specific consumption distribution in the power plant, which provides theoretical basis for energy-saving and optimization in biomass power plant.

Numerical Study of the Flow Inside a Modular Bag Filter From a Biomass Power Plant

2020 ◽  
Author(s):  
Maria Inês Vinha ◽  
João Silva ◽  
Senhorinha Teixeira ◽  
Ana Gomes ◽  
José Carlos Teixeira
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Numerical Study ◽  
Operating Conditions ◽  
Solid Particles ◽  
Biomass Combustion ◽  
Bag Filter ◽  
First Case ◽  
Vertical Baffle ◽  
Biomass Power Plant

Abstract Nowadays, one of the most important issues in modern industrial power plants is air pollution. Solid particles are harmful to human health and are one of the main pollutants released through the combustion of biomass. The main goal of this paper was to study the flow in a modular bag filter of a dedusting system implemented in a Biomass Power Plant, in order to improve the filtration of the solid particles coming from the biomass combustion. For this purpose, a numerical model using the ANSYS Fluent software was developed. Initially, it was necessary to model the dedusting system in the software SolidWorks. Once this system had 10 modules and to facilitate the simulation in Fluent, only one module was modeled with proper simplifications. Once the geometry was modeled, it was exported to Fluent where the mesh was made, with special care in the inlet of the module, as it is the most critical zone for the simulation. It was simulated 4 cases, where the action of each individual filter was considered. The first case study considered the nominal operating conditions of a biomass power plant. Thereafter, two cases with different mass flow rates were simulated to assess if there were any differences in the flow inside the bag filter. Lastly, it was studied the influence of the vertical baffle size that is in the inlet of the module. Comparing the four simulations, it was concluded that in the first three cases, the flow is very similar, with only a slight increase in the velocity in the study with higher flow, as expected. Furthermore, it was concluded that using a smaller vertical baffle, the flow would be improved, once the filters close to the inlet would be more used.

scholarly journals Alternative Fuels for Combined Cycle Power Plants: An Analysis of Options for a Location in India

2020 ◽  
Vol 12 (8) ◽  
pp. 3330
Author(s):  
Guido Marseglia ◽  
Blanca Fernandez Vasquez-Pena ◽  
Carlo Maria Medaglia ◽  
Ricardo Chacartegui
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Alternative Fuels ◽  
Combined Cycle ◽  
Operating Conditions ◽  
Pollutant Emissions ◽  
The Sustainable Development ◽  
Economic Analyses ◽  
Carbon Dioxide Co2 ◽  
The Impact

The Sustainable Development Goals 2030 Agenda of United Nations raises the need of clean and affordable energy. In the pathway for more efficient and environmentally friendly solutions, new alternative power technologies and energy sources are developed. Among these, the use of syngas fuels for electricity generation can be a viable alternative in areas with high biomass or coal availability. This paper presents the energy, environmental and economic analyses of a modern combined cycle plant with the aim to evaluate the potential for a combined power plant running with alternative fuels. The goal is to identify the optimal design in terms of operating conditions and its environmental impact. Two possible configurations are investigated in the power plant presented: with the possibility to export or not export steam. An economic analysis is proposed to assess the plant feasibility. The effect of the different components in its performance is assessed. The impact of using four different syngases as fuel is evaluated and compared with the natural gas fuelled power cycle. The results show that a better efficiency is obtained for the syngas 1 (up to 54%), in respect to the others. Concerning pollutant emissions, the syngas with a GHG impact and lower carbon dioxide (CO2) percentage is syngas 2.

scholarly journals Reduction of Cold-Start Emissions for a Micro Combined Heat and Power Plant

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1862
Author(s):  
Tammo Zobel ◽  
Christian Schürch ◽  
Konstantinos Boulouchos ◽  
Christopher Onder
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Combustion Engine ◽  
Catalytic Converter ◽  
Energy Transition ◽  
Cold Start ◽  
Combined Heat And Power ◽  
Operating Conditions ◽  
Pollutant Emissions ◽  
Full Load Operation

Decentralized power generation by combined heat and power plants becomes increasingly popular as a measure to advance the energy transition. In this context, a substantial advantage of small combined heat and power plants is based on the relatively low pollutant emissions. However, a large proportion of the pollutant emissions is produced during a cold-start. This fact is not reflected in governmental and institutional emission guidelines, as these strongly focus on the emission levels under steady-state conditions. This study analyzes the spark advance, the reference air/fuel ratio and an electrically heated catalyst in terms of their potential to reduce the cold-start emissions of a micro combined heat and power plant which uses a natural gas fueled reciprocating internal combustion engine as prime mover and a three-way catalytic converter as aftertreatment system. Based on these measures, control approaches were developed that account for the specific operating conditions of the class of small combined heat and power plants, e.g., full-load operation and flexible, demand-driven runtimes. The experimental data demonstrates that even solutions with marginal adaptation/integration effort can reduce cold-start emissions to a great extent.

scholarly journals Fuel Effects on Aircraft Combustor Emissions

1986 ◽  
Author(s):  
Curtis M. Reeves ◽  
Arthur H. Lefebvre
Keyword(s):  
Experimental Data ◽  
Carbon Monoxide ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Operating Conditions ◽  
Pollutant Emissions ◽  
Design Parameters ◽  
Oxides Of Nitrogen ◽  
Fuel Type ◽  
Unburned Hydrocarbons

Results of an analytical program to determine the effects of broad variations in fuel properties on the pollutant emissions generated by several prominent turbojet engine combustion systems, including both tubo-annular and annular configurations, are presented. Measurements of mean drop size conducted at representative engine operating conditions are used to supplement the available experimental data on the effects of combustor design parameters, combustor operating conditions, and fuel type, on pollutant emissions. The results of the study indicate that the fuel’s physical properties that govern atomization quality and evaporation rates have a significant effect on the emissions of carbon monoxide and unburned hydrocarbons. Analysis of the available experimental data shows that the influence of fuel chemistry on the emissions of carbon monoxide, unburned hydrocarbons, and oxides of nitrogen, is small. Smoke emissions are found to be strongly dependent on combustion pressure, primary-zone fuel/air ratio, and the mode of fuel injection (pressure atomization or airblast). Fuel chemistry, as indicated by hydrogen content, is also important. Equations are presented for the correlation and/or prediction of exhaust emissions in terms of combustor size, combustor geometry, engine operating conditions, fuel spray characteristics, and fuel type.

Study on the Evaluation Method for Energy Saving and Emission Reduction Effect of Power Plant

2012 ◽  
Vol 608-609 ◽  
pp. 1285-1288
Author(s):  
Yong Li ◽  
Jia Xin Wang
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Principal Components ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Thermal Power ◽  
Pollutant Emissions ◽  
Actual Movement ◽  
Reduction Effect ◽  
Basic Philosophy

Thermal power as a focus area for energy saving and pollution reduction, energy saving and environmental protection work is particularly important.This article mainly introduced principal components analytic method basic philosophy and principle, principal components analysis geometry significance, sample principal components deriving, overall principal components and nature, and using this method to known five power plant unit's actual movement when the pollutant emissions and the water used have carried on the quality synthetic evaluation. And gives the appraisal and the basic improvement opinion based on the analysis result to various power plants.The results showed that: The method eliminates the influence of subjective factors on the evaluation, obtain a comprehensive evaluation index which can be evaluated quantitatively.

Simulation Research of the Condenser in a 600MW Supercritical Thermal Power Plant

2010 ◽  
Vol 139-141 ◽  
pp. 897-902 ◽  
Author(s):  
Yun Yun Zhao ◽  
Yan Ping Zhang ◽  
Wei Deng ◽  
Shu Hong Huang
Keyword(s):  
Power Plant ◽  
Simulation Model ◽  
Water Temperature ◽  
Thermal Power Plant ◽  
Dynamic Performance ◽  
Thermal Power ◽  
Cooling Water ◽  
Optimal Operation ◽  
Operating Conditions ◽  
Design Parameters

A simulation model of the condenser in a 600MW supercritical thermal power plant was developed by using Matlab/Simulink. The important parameters such as condenser pressure, hot well water temperature and cooling water temperature were calculated by using this model. The simulation results under different operating conditions were compared with design parameters, and the relative errors were within -0.2% and +0.2%. This shows that the simulation model developed in this paper is reasonable. The dynamic performance and off-design performance of the condenser were studied by using the simulation model, which would be useful for the optimal operation of the condenser. The model of the condenser, which was developed based on the modular modeling method, would be an important basis for the simulation of the whole power plant.

Based on Energy Loss Analysis Theory to Analysis Operation Parameter and Coal Consumption of 300MW Power Plant

2012 ◽  
Vol 190-191 ◽  
pp. 37-42
Author(s):  
Kai Rui Liu ◽  
Jun Bao Yang
Keyword(s):  
Power Plant ◽  
Energy Loss ◽  
Energy Saving ◽  
Coal Consumption ◽  
Basic Formula ◽  
Loss Analysis ◽  
Operation Parameter ◽  
Analysis Theory ◽  
Operation Parameters ◽  
Formula Method

Introduced the theory of the Energy loss analysis and lots of Energy loss analysis methods and utilized the basic formula method to analysis the influence of some operation parameters of a foreign designed 300MW coal-fired power plant to coal consumption in the variety loads. Applied matlab to make a figure, which contained the influence of some operation parameters of a foreign designed 300MW coal-fired power plant to coal consumption in the variety loads. Compared analysis the results, and gained the energy saving direction, so it conducted the operation of these units and optimized it.

scholarly journals Design Implication of a Distribution Transformer in Solar Power Plants Based on Its Harmonic Profile

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1362
Author(s):  
Iván Rafael Macías Ruiz ◽  
Luis Alonso Trujillo Guajardo ◽  
Luis Humberto Rodríguez Alfaro ◽  
Fernando Salinas Salinas ◽  
Johnny Rodríguez Maldonado ◽  
...  
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Solar Power ◽  
Operating Conditions ◽  
Design Parameters ◽  
Design Calculation ◽  
Solar Power Plant ◽  
Distribution Transformer ◽  
Solar Power Generation ◽  
Harmonic Content

This article presents a comparative analysis for the design considerations for a solar power generation transformer. One of the main existing problems in transformer manufacturing is in the renewable energy field, specifically the solar power generation, where the transformer connected to the inverter is operated under a certain harmonic content and operating conditions. The operating conditions of the transformer connected to the inverter are particularly unknown for each solar power plant; thus, the transformer will be subject to a particular harmonic content, which is defined by the inverter of the solar power plant. First, the fundamental calculations for solar power plant transformer and the proposed methodology for the design calculation of the distribution pad-mounted three phase transformer are presented. Then, a design study case is described where a distribution transformer and an inverter of a particular solar power plant are used for the analysis. Next, the transformer under analysis is modeled using finite element analysis in ANSYS Maxwell® software, where the transformer will be designed for a non-harmonic and harmonic content application. Lastly, the main design parameters, flux density, the core losses and the winding excitation voltage of the transformer are calculated and presented in results and discussion section.

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