Date of Publication
3-8-2024
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Chemical Engineering
Subject Categories
Chemical Engineering | Engineering
College
Gokongwei College of Engineering
Department/Unit
Chemical Engineering
Thesis Advisor
Allan N. Soriano
John Frederick D. Tapia
Defense Panel Chair
Joseph R. Ortenero
Defense Panel Member
Michael Angelo B. Promentilla
Raymond R. Tan
Abstract/Summary
This thesis investigated the performance of binary working fluids for a geothermal-solar hybrid power plant, utilizing Aspen Plus® for detailed process simulations. It aimed to identify an optimal binary mixture against isopentane as the benchmark fluid. Initial screening of 70 fluids led to 14 candidates, which underwent further evaluation based on multifaceted criteria including thermodynamic performance, economic viability, environmental impact, safety considerations, and process-related compatibility. Insights from eight professionals were gathered to determine the criterion weights using Analytical Hierarchy Process (AHP) and the top five working fluids were ranked using the Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS). The selected working fluids were used to combine and form binary mixtures. The optimal composition of these fluids was determined through evaluating thermal efficiency and cost-effectiveness trade-offs. The research identified an optimal binary mixture of n-butene/n-butane with a composition of 0.930/0.070, achieving a thermal efficiency of 12.88% and a cost of 1287 USD per metric ton. These results are superior to isopentane, with a thermal efficiency and cost of 11.80% and 1893 USD per metric ton, respectively. This study contributes to the research field by proposing an efficient binary fluid mixture for an ORC hybrid system, leveraging geothermal and solar resources for sustainable energy product.
Abstract Format
html
Language
English
Format
Electronic
Keywords
Working fluids; Geothermal power plants
Recommended Citation
Uy, N. S., Abad, S. C., de Ocampo, C. V., & Kim, J. (2024). Determination of the optimal working fluid for geothermal-solar hybrid power plant through process simulation. Retrieved from https://animorepository.dlsu.edu.ph/etdb_chemeng/37
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Embargo Period
5-6-2024
