Journals / European Journal of Engineering and Applied Sciences / 2023 / Cilt: 6 Sayı: 1

Comparative Thermodynamic Optimization of Organic Rankine Cycle Configurations for Geothermal Power Generation from an Abandoned Oil Well

Terk Edilmiş Bir Petrol Kuyusundan Jeotermal Enerji Üretimi İçin Organik Rankine Çevrim Konfigürasyonlarının Karşılaştırmalı Termodinamik Optimizasyonu

Pages
8–18
Publication Date
2023-07-31
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results showed that between 272 kW and 875 kW of electrical power could be produced from the abandoned oil well using the most basic ORC configuration (SBC).

📌 3 Key Takeaways

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Objective & Hypothesis:This study was aimed at quantifying the net electrical power producible from an abandoned oil well in Nigeria using different organic Rankine cycle (ORC) configurations and working fluids.
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Key Findings & Data:Specifically, a subcritical ORC without a recuperator (SBC), a subcritical ORC with a recuperator (SBC-R), a supercritical ORC without a recuperator (SPC), and a supercritical ORC with a recuperator (SPC-R) were analyzed, using R115, R236fa, and R1234yf as working fluids.
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Conclusion & Impact:Results showed that between 272 kW and 875 kW of electrical power could be produced from the abandoned oil well using the most basic ORC configuration (SBC).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Terk edilmiş petrol kuyusu güçlendirmesi · Jeotermal enerji üretimi · Organik Rankine Çevrimi

Abstract

This study was aimed at quantifying the net electrical power producible from an abandoned oil well in Nigeria using different organic Rankine cycle (ORC) configurations and working fluids. The geological features of a typical Nigerian oil well were employed in the study and a borehole heat exchanger was used for simulating the thermodynamic parameters of the heat source. Specifically, a subcritical ORC without a recuperator (SBC), a subcritical ORC with a recuperator (SBC-R), a supercritical ORC without a recuperator (SPC), and a supercritical ORC with a recuperator (SPC-R) were analyzed, using R115, R236fa, and R1234yf as working fluids. Results showed that between 272 kW and 875 kW of electrical power could be produced from the abandoned oil well using the most basic ORC configuration (SBC). Furthermore, it was obtained that the introduction of a recuperator would increase the ORC net power by about 13% for R236fa, 33% for R1234yf, and 107% for R115. Similarly, a switch from a subcritical ORC to a supercritical ORC configuration would increase net power for all the working fluids. Specifically, an increase in net power was estimated at 3.6% for R236fa, 46% for R1234yf, and 152% for R115 regarding a switch from the SBC to the SPC. Moreover, decreasing the condensation pressure of the ORC plants was observed to improve net power in all cases.

Özet

Bu çalışma, farklı organik Rankine çevrimi (ORC) konfigürasyonları ve çalışma sıvıları kullanılarak Nijerya'da terk edilmiş bir petrol kuyusundan üretilebilen net elektrik gücünü ölçmeyi amaçlıyordu. Çalışmada tipik bir Nijerya petrol kuyusunun jeolojik özellikleri kullanılmış ve ısı kaynağının termodinamik parametrelerini simüle etmek için bir sondaj kuyusu ısı eşanjörü kullanılmıştır. Spesifik olarak, geri kazanım cihazı olmayan bir kritik altı ORC (SBC), bir geri kazanım cihazı olan bir kritik altı ORC (SBC-R), bir geri kazanım cihazı olmayan bir süper kritik ORC (SPC) ve bir geri kazanım cihazı olan bir süper kritik ORC (SPC-R) kullanılarak analiz edildi. Çalışma sıvıları olarak R115, R236fa ve R1234yf. Sonuçlar, en temel ORC konfigürasyonu (SBC) kullanılarak terk edilmiş petrol kuyusundan 272 kW ile 875 kW arasında elektrik enerjisinin üretilebileceğini gösterdi. Ayrıca, bir geri kazanım cihazının eklenmesinin ORC net gücünü R236fa için yaklaşık %13, R1234yf için %33 ve R115 için %107 artıracağı elde edildi. Benzer şekilde, kritik altı bir ORC'den süper kritik bir ORC konfigürasyonuna geçiş, tüm çalışma sıvıları için net gücü artıracaktır. Spesifik olarak, SBC'den SPC'ye geçişle ilgili olarak net güçteki artışın R236fa için %3,6, R1234yf için %46 ve R115 için %152 olduğu tahmin edilmiştir. Ayrıca, ORC tesislerinin yoğuşma basıncının düşürülmesinin her durumda net gücü iyileştirdiği gözlemlenmiştir.

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Cite This Article

OYEKALE, J., ADETONA, O. (2023). Comparative Thermodynamic Optimization of Organic Rankine Cycle Configurations for Geothermal Power Generation from an Abandoned Oil Well. European Journal of Engineering and Applied Sciences, Cilt: 6 Sayı: 1, 8–18. https://ajindex.com/articles/957321

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