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Optimisation of an Integrated System: Combined Heat and Power Plant with CO2 Capture and Solar Thermal Energy

Authors :
Agustín Moisés Alcaraz Calderón
Oscar Alfredo Jaramillo Salgado
Nicolas Velazquez Limón
Miguel Robles Perez
Jorge Ovidio Aguilar Aguilar
Maria Ortencia González Díaz
Abigail González Díaz
Source :
Processes; Volume 11; Issue 1; Pages: 155
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

This paper aims to evaluate different design configurations of a combined heat and power (CHP) plant with post-combustion CO2 capture. Three cases are involved in this study: case 1 consists of three trains and each train has a configuration of one gas turbine with a heat recovery steam generator (HRSG); case 2 consists of three trains and one steam turbine; and case 3 consists of only two trains. The third case presented the highest CHP efficiency of 72.86% with 511.8 MW net power generation. After selecting the optimum configuration, a parabolic-trough collector (PTC) was incorporated to generate additional saturated steam at 3.5 bar for the capture plant, adding greater flexibility to the CHP because more steam was available. In addition, the efficiency of the cycle increased from 72.86% to 80.18%. Although case 2 presented lower efficiency than case 3, it has a steam turbine which brings the possibility of increasing the amount of electricity instead of steam production. When the PTC was incorporated in case 2, the power generated in the steam turbine increased from 23.22 MW to 52.6 MW, and the net efficiency of the cycle from 65.4% to 68.21%.

Details

ISSN :
22279717
Volume :
11
Database :
OpenAIRE
Journal :
Processes
Accession number :
edsair.doi.dedup.....049733f1a4e0cad14a402ab73fdc4d30
Full Text :
https://doi.org/10.3390/pr11010155