Volume 44, Issue 11 pp. 8455-8479
RESEARCH ARTICLE

Thermo-economic comparative analysis of solar-assisted and carbon capture integrated conventional cogeneration plant of power and process steam

Esmail M.A. Mokheimer

Corresponding Author

Esmail M.A. Mokheimer

Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

K.A.CARE, Energy Research and Innovation Center, Dhahran, Saudi Arabia

Correspondence

Esmail M.A. Mokheimer, Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.

Email: [email protected]

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Mohammad Raghib Shakeel

Mohammad Raghib Shakeel

Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

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Yinka S. Sanusi

Yinka S. Sanusi

Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

Mechanical Engineering Department, Ahmadu Bello University, Zaria, Nigeria

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Mohamed Mahmoud

Mohamed Mahmoud

Petroleum Engineering Department, College of Petroleum Engineering & Geosciences, King Fahad University of Petroleum and Minerals, Dhahran, Saudi Arabia

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First published: 03 June 2020
Citations: 8

Funding information: King Abdullah City for Atomic and Renewable Energy (K.A.CARE), Grant/Award Number: K.A.CARE RFP; the DSR of King Fahd University of Petroleum and Minerals (KFUPM), Grant/Award Number: DF181017

Summary

A thermo-economic comparative analysis of steam production using a solar-assisted cogeneration (SACG) and a conventional cogeneration plant (CCG) with and without carbon capture systems has been conducted. The plants considered to produce electricity and process steam of 500 ton/h. Several parametric studies were carried out on the effect of natural gas price, steam quality, gas turbine capacity and solar multiples (SMs) on the Levelized cost of steam (LCS). Results show that in a CCG plant that comprises a 20 MWe gas turbine, the LCS is $8.11/ton of steam and $3.61/ton of steam from a plant with 100 MWe gas turbine capacity for a natural gas price of $3/GJ. The cost analysis of SACG plant with SM of 0.1 shows that 28% of the total annualized costs are solar system related while it contributed only about 9.17% of the annual steam generation. An increase in SM from 0.1 to 0.9 increases the CO2 avoidance from 61 to 262 ktons/annum for the SACG plant with 20 MWe gas turbine. CCG plants with CO2 capture technologies were found to have lower LCS in comparison with that of SACG plant. The impact of carbon credit implementation on the LCS has been also investigated and reported in this article.

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