Techno-economic analysis of a sCO2 power plant for waste heat recovery in steel industry

Biondi, Matteo; Giovannelli, Ambra; Lorenzo, Giuseppina Di; Salvini, Coriolano

doi:10.1016/j.egyr.2020.11.147

Cited by 14 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recuperated Brayton cycle (RBC) designed for the CO2OLHEAT project stands out as one of the best configurations regarding conversion efficiency, simplicity, and cost-effectiveness, as deduced from numerous studies in the literature. The suitability of this configuration for waste heat recovery (WHR) applications in highly energy-intensive industrial sectors has generated considerable interest for potential investments in the near future, despite the need for further investigations on capital costs due to the lack of practical experience with prototype machines at an industrial power scale [7]. However, due to non-linear variations of certain physical properties, pinch points could occur within the recuperator.…”

Section: Co2olheat Conceptmentioning

confidence: 99%

Supercritical carbon dioxide recovery system applied to cement industries

Cevolani,

Giovannelli,

Messina

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The paper addresses the potential heat-to-power application of supercritical CO2 (sCO2) plants to the cement industry, thereby reducing their electricity demand and improving energy efficiency. The research was conducted as part of the European project CO2OLHEAT (G.A. 101022831), which involves the installation of a 2 MW Waste-Heat-to-Power (WH2P) skid based on a sCO2 cycle in a cement plant, the first of its kind with a MW-scale power output. The paper summarizes technologies and processes employed in the Italian cement production sector, detecting where the waste heat can be successfully extracted to feed the recovery plant without compromising the industrial process. Moreover, the paper discusses the national cement market and explores the potential advantages and limitations of integrating sCO2 recovery plants within the national cement context, considering production and energy-related data. The final finding reveals the percentage of recoverable electricity per technological class for the cement production sector in Italy with a potential application of the sCO2 recovery plant, aiming at identifying the potential market penetration of the CO2OLHEAT installation.

show abstract

Section: Co2olheat Conceptmentioning

confidence: 99%

Supercritical carbon dioxide recovery system applied to cement industries

Cevolani,

Giovannelli,

Messina

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…The details of the in-house tool are reported in [8]. For a given waste heat potential, the tool can evaluate the thermodynamic states at the main stations and overall cycle performance, setting minimum and maximum pressures and temperatures, turbomachinery efficiencies, and heat exchangers pressure drops.…”

Section: Techno-economic Analysismentioning

confidence: 99%

sCO₂ Power Plant for Industrial Waste Heat Recovery: a Case Study

et al. 2020

Self Cite

View full text Add to dashboard Cite

Industrial facilities release a large amount of heat as a byproduct of their processes. To improve environmental performance and increase the process profitability, this waste heat can be recovered and employed to generate power. Supercritical carbon dioxide (sCO2) systems have emerged as potential alternatives to the well-established technologies because of their high performance, reduced footprint and low water consumption. This paper aims to investigate the techno-economic feasibility of a sCO2 closed loop for power generation coupled with heavyindustrial processes, which make flue gases available at high-temperatures (above 400 °C).

show abstract

“…(2) concentrated solar power (CSP), which were reviewed in Li et al, 8 presented for dry-cooling conditions in Khatoon et al, 9 and introduced with direct integration as in Son et al, 10 or indirect integration as in Linares et al 11 ; (3) waste heat recovery through integration with bottoming cycles, 12 direct carbon fuel cell, 13 coupling with high-grade waste heat sources, 14 or specific industries such as steel industry, 15 and direct oxycombustion (DOC) technologies. 16 Therefore, in the open literature, various configurations for the sCO 2 power block are proposed and investigated for these applications.…”

Section: Introductionmentioning

confidence: 99%

“…This returns to the distinguishing features of the sCO 2 power cycles, such as compactness, 2 high efficiencies, 3 and ability to capture CO 2 emissions 4 . These sCO 2 power cycles can be integrated with a variety of applications, such as 5 : (1) nuclear reactors (which were reviewed in Wu et al 6 and analyzed in Du et al 7 ); (2) concentrated solar power (CSP), which were reviewed in Li et al, 8 presented for dry‐cooling conditions in Khatoon et al, 9 and introduced with direct integration as in Son et al, 10 or indirect integration as in Linares et al 11 ; (3) waste heat recovery through integration with bottoming cycles, 12 direct carbon fuel cell, 13 coupling with high‐grade waste heat sources, 14 or specific industries such as steel industry, 15 and direct oxy‐combustion (DOC) technologies 16 . Therefore, in the open literature, various configurations for the sCO 2 power block are proposed and investigated for these applications.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive thermoeconomic, exergoeconomic, and optimization analyses of direct oxy‐combustion supercritical CO₂ intercooled and reheated cycles under design and off‐design conditions

Al‐Ammari

Sleiti

2022

Energy Science & Engineering

View full text Add to dashboard Cite

This study presents comprehensive energetic, exergetic, exergoeconomic, and economic (4E) performance analyses for four direct oxy-combustion (DOC) supercritical carbon dioxide (sCO 2 ) power cycles at design, off-design, and part-load conditions. These cycles include the dual recuperator cycle (DRC), intercooling cycle (ICC), partial intercooling cycle (PIC), and reheating cycle (RHC). The analyses were conducted at relatively low turbine inlet temperatures (TIT: 550-750°C) with compressor inlet temperature (CIT) varied from 33°C (wet-cooling) to 50°C (dry-cooling). Furthermore, single-and multiobjective optimization analyses were conducted for each cycle. At design conditions (high-pressure of P c,o = 20 MPa, lowpressure of P c,o = 5.4 MPa, TIT = 750°C, CIT = 50°C [dry-cooling]), the PIC has the highest thermal efficiency (47.78%) compared to 38.36% for DRC, 45.71% for ICC, and 44.39% for RHC. At optimized conditions (P c,o = 30 MPa, P c,o = 8 MPa, TIT = 744°C, CIT = 30°C [wet-cooling]), the ICC shows superior energetic performance (52.08%) compared to 47.97% for DRC, 49.20% for PIC, and 48.62% for RHC. At offdesign conditions with a power demand (PD) of 40% of the design load (50 MW), the thermal efficiency is decreased by 21.82% in DRC, 17.71% in ICC, 22.46% in PIC, and 13.60% in RHC. The ICC has the minimum levelized cost of electricity compared to the other cycles with 5.93 ¢/kWh at design conditions (dry-cooling), 5.65 ¢/kWh at optimized conditions (wet-cooling), and 7.2 ¢/kWh at minimum PD (21 MW). Therefore, from an economic point of view, the ICC is recommended as the best power block for a sCO 2 power cycle driven by oxy-combustor at moderate TITs. The study also provides constructive comparisons between the DOC-sCO 2 and indirect (nuclear, solar, and waste heat) sCO 2 power cycle systems and the future research directions.

show abstract

Techno-economic analysis of a sCO2 power plant for waste heat recovery in steel industry

Cited by 14 publications

References 10 publications

Supercritical carbon dioxide recovery system applied to cement industries

Supercritical carbon dioxide recovery system applied to cement industries

sCO₂ Power Plant for Industrial Waste Heat Recovery: a Case Study

Comprehensive thermoeconomic, exergoeconomic, and optimization analyses of direct oxy‐combustion supercritical CO₂ intercooled and reheated cycles under design and off‐design conditions

Contact Info

Product

Resources

About

Techno-economic analysis of a sCO2 power plant for waste heat recovery in steel industry

Cited by 14 publications

References 10 publications

Supercritical carbon dioxide recovery system applied to cement industries

Supercritical carbon dioxide recovery system applied to cement industries

sCO2 Power Plant for Industrial Waste Heat Recovery: a Case Study

Comprehensive thermoeconomic, exergoeconomic, and optimization analyses of direct oxy‐combustion supercritical CO2 intercooled and reheated cycles under design and off‐design conditions

Contact Info

Product

Resources

About

sCO₂ Power Plant for Industrial Waste Heat Recovery: a Case Study

Comprehensive thermoeconomic, exergoeconomic, and optimization analyses of direct oxy‐combustion supercritical CO₂ intercooled and reheated cycles under design and off‐design conditions