2010

Bir Güneş Havuzundan Üretilecek Elektrik ile Hidrojen Elde Etme Sisteminin Performansının Teorik Olarak İncelenmesi

Bu çalışmada, dikdörtgen prizma tuz eğimli güneş havuzu (DPTEGH)’nun elektrik ve hidrojen üretim performansı incelendi. Güneş enerjisinden ısı enerjisi üretmek için 1,5×8×8 m3 boyutunda dikdörtgen prizma şeklinde bir güneş havuzu, Organik Rankine Çevrimi (ORÇ) ve elektroliz sisteminden oluşan bir birleşik sistem tasarlandı. Tasarlanan bu sistemin analizi mühendislik eşitlikleri çözücü (EES) benzetim programı kullanılarak gerçekleştirildi. Havuzda depolanan ısı enerjisi Organik Rankine Çevrimi (ORÇ)’ye aktarıldı. Böylece, başarılı bir şekilde depolanan ısı enerjisi kullanılarak ORÇ’de elektrik üretildi. Ancak, hem ısının hem de elektriğin verimli bir şekilde depolanamaması yüzünden, üretilen enerji bir elektroliz sisteminde hidrojen üretiminde kullanıldı. Böylece suyun elektrolizi ile hidrojen gazı üretildi. Analizler, Haziran, Temmuz, Ağustos ve Eylül ayları için ayrı ayrı yapıldı. Sonuç olarak, ORÇ’nin enerji verimi Haziran Temmuz, Ağustos ve Eylül ayları için sırasıyla %16,20, %16,73, 17,47 ve %15,32 olarak bulundu. Aynı aylar için üretilen elektrik ise sırasıyla, 143,2 MJ, 156,2 MJ, 168,5 MJ ve 130,5 MJ olarak hesaplandı. Bu elektriğin, bir elektroliz sisteminde kullanılmasıyla da sırasıyla 1,216 kg, 1,326 kg, 1,431 kg ve 1,108 kg hidrojen üretilebileceği görüldü.

The Theoretical Investigation of Performance of the Hydrogen Attaination System with Electricity from a Solar Pond

In this study, the electricity and hydrogen production performance of the rectangular prism salt sloped solar pond (RPSSSP) was examined. In order to generate thermal energy from solar energy, an integrated system consisting of a solar pond in the form of a rectangular prism of 1.5 × 8 × 8 m3, Organic Rankine Cycle (ORC) and electrolysis system was designed. The analysis of the designed system was carried out using an engineering equations solver (EES) program. Thermal energy stored in the pond was transferred to the Organic Rankine Cycle. Thus, electricity was generated in the ORC by using thermal energy, successfully. However, due to the fact that both heat and electricity cannot be efficiently stored, the energy produced is used in the production of hydrogen in an electrolysis system. Hydrogen gas was produced by electrolysis of water. The analysis was done separately for June, July, August and September. As a result, the energy consumption of the ORC was 16.20%, 16.73%, 17.47% and 15.32% for June July, August and September respectively. Electricity generated for the same months was 143.2 MJ, 156.2 MJ, 168.5 MJ and 130.5 MJ, respectively. By using this electricity in an electrolysis system, 1.216 kg, 1.326 kg, 1.431 kg and 1.108 kg of hydrogen can be produced, respectively.

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