Modeling of the Thermodynamic and Environmental Impact Assessment of a Geothermal Energy-Based Power and Hydrogen Generation Plant

Abstract

In this proposed study, hydrogen and power generation by low-temperature geothermal energy supported Kalina cycle is thermodynamically investigated with an energy and exergy efficiencies approaches. This combined plant includes a Kalina cycle and a PEM electrolysis for power and hydrogen generation. The key purpose of this paper is to generate power and hydrogen in an environmentally benign way. Furthermore, environmental impact analysis is discussed to investigate the carbon dioxide emission that will be released if the power and amount of hydrogen obtained are produced with natural gas. As coming to the examination results, the energy and exergy performance of the overall plant 7.94% and 37.64%, respectively. Also, the net power and hydrogen production rates are computed as 100.5 kW and 0.0001191 kgs-1.

Keywords

• Energy
• Exergy
• Geothermal
• Hydrogen
• Kalina cycle

Jeotermal Enerji Destekli Güç ve Hidrojen Üretim Tesisinin Termodinamik ve Çevresel Etki Değerlendirmesinin Modellenmesi

Abstract

Önerilen bu çalışmada, düşük sıcaklıklı jeotermal enerji destekli Kalina çevrimi ile hidrojen ve güç üretimi termodinamik olarak enerji ve ekserji verimlikleri ile kapsamlı şekilde incelenmiştir. Bu birleşik tesis, güç ve hidrojen üretimi için bir Kalina çevrimi ve bir PEM elektrolizi içerir. Bu makalenin temel amacı, çevre dostu bir şekilde güç ve hidrojen üretmektir. Ayrıca elde edilen hidrojenin gücü ve miktarının doğal gaz ile üretilmesi durumunda ortaya çıkacak olan karbondioksit salınımını araştırmak için çevresel etki analizi tartışılmaktadır. Analiz sonuçlarına göre, tüm tesisin enerji ve ekserji verimliliği sırasıyla %7.94 ve %37.64'üir. Ayrıca net güç miktarı ve hidrojen oranı 100.5 kW ve 0.0001191 kgs-1'dir.

Keywords

• Enerji
• Ekserji
• Jeotermal
• Hidrojen
• Kalina çevrimi

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