Development and validation of a dynamic simulation model for a large coal-fired power plant

Starkloff, Ralf; Alobaid, Falah; Karner, Karl; Epple, Bernd; Schmitz, Martin; Boehm, F.

doi:10.1016/j.applthermaleng.2015.08.015

Cited by 104 publications

(33 citation statements)

References 16 publications

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“…This work relieves the shortcoming, as we used the commercial Apros (2016) simulation platform, which is traditionally used for the modelling and simulation of nuclear (see e.g. Näveri et al, 2010), and combustion (Lappalainen et al, 2014;Starkloff et al, 2015) power plants, but recently solar power technologies have also been addressed (Hakkarainen and Tähtinen, 2014).…”

Section: Introductionmentioning

confidence: 99%

Modelling and dynamic simulation of a large MSF plant using local phase equilibrium and simultaneous mass, momentum, and energy solver

Lappalainen

Korvola

Alopaeus

2017

Computers & Chemical Engineering

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Section: Introductionmentioning

confidence: 99%

Modelling and dynamic simulation of a large MSF plant using local phase equilibrium and simultaneous mass, momentum, and energy solver

Lappalainen

Korvola

Alopaeus

2017

Computers & Chemical Engineering

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“…This will force them to a continuous adaptation of their load, which implies high operational flexibility. Thus, most recent studies about coal‐fired power plants are mainly focused on their dynamic study in order to analyze such flexibility …”

Section: Introductionmentioning

confidence: 99%

“…Thus, most recent studies about coal-fired power plants are mainly focused on their dynamic study in order to analyze such flexibility. [2][3][4] Thermal power plants have relatively low efficiency, which means that a high proportion of the primary energy of the source is lost. Thus, the improvement of their efficiency is highly desirable even if only by a small percentage because of the high number of hours that this type of plants operate and to their impact on the environment.…”

mentioning

confidence: 99%

One feedwater heater taken out of service as a strategy to maintain full load and its effect on steam power cycle parameters and performance

Riesgo

Folgueras

2019

Int J Energy Res

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Summary The aim of this study is to analyze the suitability of one heater removal as a strategy for maintaining full load operation of steam power cycles when superheated and/or reheated temperatures (TSS, TRS) decrease and the effect on the net heat rate (HRNet). For this purpose, three regenerative cycles with different numbers of closed feedwater heaters were chosen. The cycles were analyzed at different steady states with Thermoflex software. Removing a heater has an important influence on the cycle operation and performance, leading to the redistribution of extraction mass flows, with the heater immediately downstream being the most affected. This may make it necessary to reduce the load of the cycle. However, when the highest pressure heater (highest PH) is removed from service, the changes are not so significant. When TSS and/or TRS decrease, the plant may not achieve full load operation. Nevertheless, if the highest PH is removed from service, it can help to recover full load. This is due to the decrease in the water/steam mass flow through the steam generator, which produces an increase in TSS and/or TRS. On the one hand, this measure leads to higher HRNet in comparison to that of the nominal conditions. On the other hand, there are certain conditions at which HRNet is lower than when all the heaters are in service and the values of TSS and/or TRS are low. Thus, for maintaining full load, the highest PH removal can be applied and cycle parameters optimized in order to reach a HRNet closer to its nominal value. The higher the number of closed feedwater heaters, the more adequate is the application of this strategy.

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“…Microalgae are unicellular organisms of much smaller size (typically ranging from nanometers to millimeters in length) that can survive in extreme temperatures and with minimal water availability [41,42,43]. Macroalgae are usually considered for producing biogas which can yield up to 80% of the energy content of petroleum-based fuels, whilst microalgae species favor the production of biodiesel due to their high percentage of lipids compared to macroalgae [2,9,11,51].…”

Section: Introductionmentioning

confidence: 99%

Evaluating Algae as an Alternative Fuel for Chemical Looping Combustion

Williams

Bentley

Peramatukorn

et al. 2018

PAMR

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Chemical Looping Combustion (CLC) and Chemical Looping with Oxygen Uncoupling (CLOU) are low-pollution energy generation techniques conventionally utilizing natural gas or synthetic gas as fuel. Using a redox reaction of metal oxides in dual fluidised beds, CO2 can be captured and prevented from entering the atmosphere at efficiencies up to 80% [4,8]. Algae is a sustainable source of biofuel with the additional benefit of carbon capture through photosynthesis [7]. This Meta-Study attempts to determine the viability of algae as CLC/CLOU reactor fuel for long term sustainable energy generation by identifying trends in different fuels and reactants to see if algae fuel can produce an acceptable output and identify areas of weakness. Energy balance calculations were performed as well as thermal energy output, processing energy and enthalpy values. Graciliara sp. and Chlorella Vulgaris made the most effective fuels for CLC and CLOU respectively due to the low amount of algae required to produce fuel. For CLC, 3.57kg Graciliara sp. produced 1kg fuel. For CLOU, 1.7kg Chlorella Vulgaris produced 1kg fuel. CLOU was the most mass efficient with an energy/mass efficiency ratio of 11600kJ/kg compared to CLC’s 15.7kJ/kg. The energy balance ratio analysis of the production of algal fuel also identified Chlorella Vulgaris as the best fuel, with an EBR of -0.4 in CLOU. In terms of evaluating output, CLOU's energy/mass efficiency ratio surpassed a modern coal plant [45], whose value was 2840 kJ/kg. The defining factor was the enthalpy of reaction.

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Development and validation of a dynamic simulation model for a large coal-fired power plant

Cited by 104 publications

References 16 publications

Modelling and dynamic simulation of a large MSF plant using local phase equilibrium and simultaneous mass, momentum, and energy solver

Modelling and dynamic simulation of a large MSF plant using local phase equilibrium and simultaneous mass, momentum, and energy solver

One feedwater heater taken out of service as a strategy to maintain full load and its effect on steam power cycle parameters and performance

Evaluating Algae as an Alternative Fuel for Chemical Looping Combustion

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