Performance analysis of a new ejector expansion refrigeration cycle (NEERC) for power and cold: Exergy and energy points of view

Megdouli, K.; Tashtoush, Bourhan; Ezzaalouni, Y.; Nahdi, E.; Mhimid, Abdallah; Kairouani, Lakdar

doi:10.1016/j.applthermaleng.2017.05.014

Cited by 36 publications

(12 citation statements)

References 45 publications

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“…An alternative idea regards the use of an expander in the system in order to produce a small work amount and to decrease the network demand. Yang et al [18] found that this idea is able to increase the COP of a CO 2 refrigeration system up to 11%, while similar enhancements, about up to 12%, have been found by Megdouli et al [19]. The utilization of cascade refrigeration systems with CO 2 is also common in the literature.…”

Section: Of 27mentioning

confidence: 64%

CO2 Transcritical Refrigeration Cycle with Dedicated Subcooling: Mechanical Compression vs. Absorption Chiller

Bellos

Tzivanidis

2019

Applied Sciences

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The objective of this paper is the comparison of two dedicated subcooling methods, after the gas cooler, in a CO2 transcritical refrigeration system. The use of vapor compression refrigeration with R134a for subcooling is the first method, and the second is the use of an absorption chiller that operates with a LiBr-H2O working pair. The examined systems are compared energetically and exegetically with the reference transcritical CO2 refrigeration cycle without subcooling. The analysis is conducted for different operating scenarios and in every case, the system is optimized by selecting the proper temperature and pressure levels. The analysis is performed with a developed and validated model in Engineering Equation Solver. According to the final results, the use of the absorption chiller is able to decrease the system electricity consumption by about 54% compared to the simple transcritical cycle, while the decrease with the mechanical subcooling is 41%. Both systems with dedicated subcooling are found to have an important increase in the system exergy performance compared to the simple transcritical cycle. However, the system with the mechanical subcooling is found to be the best choice exegetically, with a small difference from the system with the absorption chiller.

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Section: Of 27mentioning

confidence: 64%

CO2 Transcritical Refrigeration Cycle with Dedicated Subcooling: Mechanical Compression vs. Absorption Chiller

Bellos

Tzivanidis

2019

Applied Sciences

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“…Bolaji et al (2011) melakukan analisis kapasitas pendinginan dengan injektor pada katup ekspansi konvensional dan hasilnya menunjukkan bahwa pengaturan injektor dapat meningkatkan COP. Vidal et al (2006) dan Megdouli et al (2017) menyajikan metode analisis energi untuk menunjukkan besarnya potensi pendinginan.…”

Section: Pendahuluanunclassified

The Effect of Receiver on the Performance of Freezer

Sukusno

Tambunan

Setiawan

et al. 2018

JTEP

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Selain itu, JTEP juga telah terdaftar pada Crossref dan telah memiliki Digital Object Identifier (DOI) dan telah terindeks pada ISJD, IPI, Google Scholar dan DOAJ. JTEP terbit tiga kali setahun yaitu bulan April, Agustus dan Desember, dan mulai tahun ini berisi 15 naskah untuk setiap nomornya. Peningkatan jumlah naskah pada setiap nomornya ini dimaksudkan untuk mengurangi masa tunggu dengan tidak menurunkan kualitas naskah yang dipublikasikan. Jurnal berkala ilmiah ini berkiprah dalam pengembangan ilmu keteknikan untuk pertanian tropika dan lingkungan hayati. Jurnal ini diterbitkan dua kali setahun baik dalam edisi cetak maupun edisi online. Penulis makalah tidak dibatasi pada anggota PERTETA tetapi terbuka bagi masyarakat umum. Lingkup makalah, antara lain meliputi teknik sumberdaya lahan dan air, alat dan mesin budidaya pertanian, lingkungan dan bangunan pertanian, energi alternatif dan elektrifikasi, ergonomika dan elektronika pertanian, teknik pengolahan pangan dan hasil pertanian, manajemen dan sistem informasi pertanian. Makalah dikelompokkan dalam invited paper yang menyajikan isu aktual nasional dan internasional, review perkembangan penelitian, atau penerapan ilmu dan teknologi, technical paper hasil penelitian, penerapan, atau diseminasi, serta research methodology berkaitan pengembangan modul, metode, prosedur, program aplikasi, dan lain sebagainya. Penulisan naskah harus mengikuti panduan penulisan seperti tercantum pada website dan naskah dikirim secara elektronik (online submission) melalui http://journal.ipb.ac.id/index.php/jtep.

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“…Many researchers have investigated the combined ERS with ORC for the production of cold and power [ 7 , 8 , 9 ]. Li et al [ 10 ] proposed an ORC with an ejector (EORC) to increase the power output capacity and cycle efficiency.…”

Section: Introductionmentioning

confidence: 99%

Exergy and Exergoeconomic Analysis of a Cogeneration Hybrid Solar Organic Rankine Cycle with Ejector

Tashtoush

Morosuk

Chudasama

2020

Entropy

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Solar energy is utilized in a combined ejector refrigeration system with an organic Rankine cycle (ORC) to produce a cooling effect and generate electrical power. This study aims at increasing the utilized share of the collected solar thermal energy by inserting an ORC into the system. As the ejector refrigeration cycle reaches its maximum coefficient of performance (COP), the ORC starts working and generating electrical power. This electricity is used to run the circulating pumps and the control system, which makes the system autonomous. For the ejector refrigeration system, R134a refrigerant is selected as the working fluid for its performance characteristics and environmentally friendly nature. The COP of 0.53 was obtained for the ejector refrigeration cycle. The combined cycle of the solar ejector refrigeration and ORC is modeled in EBSILON Professional. Different parameters like generator temperature and pressure, condenser temperature and pressure, and entrainment ratio are studied, and the effect of these parameters on the cycle COP is investigated. Exergy, economic, and exergoeconomic analyses of the hybrid system are carried out to identify the thermodynamic and cost inefficiencies present in various components of the system.

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Performance analysis of a new ejector expansion refrigeration cycle (NEERC) for power and cold: Exergy and energy points of view

Cited by 36 publications

References 45 publications

CO2 Transcritical Refrigeration Cycle with Dedicated Subcooling: Mechanical Compression vs. Absorption Chiller

CO2 Transcritical Refrigeration Cycle with Dedicated Subcooling: Mechanical Compression vs. Absorption Chiller

The Effect of Receiver on the Performance of Freezer

Exergy and Exergoeconomic Analysis of a Cogeneration Hybrid Solar Organic Rankine Cycle with Ejector

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