Performance and Cost Assessment of a Coal Gasification Power Plant Integrated with a Direct-Fired sCO&lt;sub&gt;2&lt;/sub&gt; Brayton Cycle

Weiland, Nathan; Shelton, Walter; Travis, Shultz,; White, Charles W.; Gray, David

doi:10.2172/1491109

Cited by 8 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The total revenue requirement (TRR) method has been applied in this work . The first step of the method is associated with estimating the fixed capital investment (FCI), for which the estimation of the equipment’s capital costs is the most critical issue. ,− The Chemical Engineering Plant Cost Index (CEPCI) has been employed to escalate the costs to 2017, the reference year used in this paper (eq ). The annual expenses related to operation and maintenance (O&M), which are composed of a fixed part (salary, maintenance, and administrative costs) and a variable part (fuel and CO 2 transport and storage costs), are calculated throughout the whole expected plant life (see Table for the main assumptions of the economic analysis).…”

Section: Methodsmentioning

confidence: 99%

Exergoeconomic Analysis of the Allam Cycle

Hervás

Petrakopoulou

2019

Energy Fuels

View full text Add to dashboard Cite

Greenhouse gas emissions from fossil fuel combustion is one of the main causes of global warming. Carbon capture, storage, and/or utilization consists of technologies and measures focused on diminishing anthropogenic emission of carbon dioxide (CO2), an important contributor to the greenhouse effect. One of the most promising methods for carbon capture is oxy-combustion, for which several innovative alternatives have been proposed in recent years. This paper evaluates a thermodynamic cycle known as the Allam cycle. The novelty of this plant lies in the fact that the cycle uses supercritical CO2 as the working fluid of the process. The evaluation is performed using exergetic, economic, and exergoeconomic analyses. The election of an exergy-based methodology rather than a conventional energy-based analysis is motivated by the better characterization of the thermal system achieved by the first. The goal is to assess the cost effectiveness of the cycle and to determine a way to optimize it by design changes and other modifications. Overall, we find that the calculated efficiency and cost of electricity can compete with other low-emission technologies, but they are higher than those of the currently operating combined cycle plants.

show abstract

Section: Methodsmentioning

confidence: 99%

Exergoeconomic Analysis of the Allam Cycle

Hervás

Petrakopoulou

2019

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Several CO 2 transport cost studies explored the spillover costs at the boundary between CO 2 capture and transport, and between CO 2 transport and storage. One way this can play out is through impurities in the CO 2 stream, which risk eroding pipelines and storage tanks if not removed prior to transport (Weiland et al, 2017;Skaugen et al, 2016). The level and type of impurities depend on the CO 2 source and type of capture equipment, which in turn impact the extra purification cost.…”

Section: Co 2 Transportmentioning

confidence: 99%

The Cost of CO2 Transport and Storage in Global Integrated Assessment Modeling

et al. 2021

View full text Add to dashboard Cite

“…In an indirect cycle, the sCO 2 is supplied heat through a heat exchanger where various methods produce heat. For direct-fired sCO 2 cycles, natural gas-fired oxy-combustion cycles (Allam cycle) [10][11][12] or direct coal-fired [13] are typically used. Indirect-fired sCO 2 cycles consist of the use of nuclear energy [9,14], concentrated solar energy [15][16][17], and waste heat recovery [18,19].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Development of a Small-Scale Supercritical Carbon Dioxide (sCO2) Brayton Cycle

et al. 2022

View full text Add to dashboard Cite

Carbon dioxide’s (CO2) ability to reach the supercritical phase (7.39 MPa and 304.15 K) with low thermal energy input is an advantageous feature in power generation design, allowing for the use of various heat sources in the cycle. A small-scale supercritical carbon dioxide (sCO2) power cycle operating on the principle of a closed-loop Brayton cycle is currently under construction at The University of Texas at San Antonio, to design and develop a small-scale indirect-fired sCO2 Brayton cycle, acquire validation data of the cycle’s performance, and compare the cycle’s performance to other cycles operating in similar conditions. The power cycle consists of four principal components: A reciprocating piston compressor, a heating source, a reciprocating piston expander to produce power, and a heat exchanger to dissipate excess heat. The work explained in the present manuscript describes the theory and analysis conducted to design the piston expander, heating source, and heat exchanger in the cycle. Theoretical calculations indicate that using sCO2 for the Brayton cycle generates 4.5 kW of power with the inlet pressure and temperature of 17.23 MPa and 358.15 K to the piston expander. Based on the fully isentropic conditions, the thermal efficiency of the system is estimated to be 12.75%.

show abstract

Performance and Cost Assessment of a Coal Gasification Power Plant Integrated with a Direct-Fired sCO<sub>2</sub> Brayton Cycle

Cited by 8 publications

References 0 publications

Exergoeconomic Analysis of the Allam Cycle

Exergoeconomic Analysis of the Allam Cycle

The Cost of CO2 Transport and Storage in Global Integrated Assessment Modeling

Analysis and Development of a Small-Scale Supercritical Carbon Dioxide (sCO2) Brayton Cycle

Contact Info

Product

Resources

About