The effect the effectiveness of the liquid suction heat exchanger to performance of cold storage with refrigerant R22, R404A and R290/R600a

Prayudi,; Nurhasanah, Roswati; Diantari, Retno Aita

doi:10.1063/1.4968320

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…R290 and R600a, which may be combined 50/50, have qualities that are comparable to those of R404A and might be used as a replacement. 3.91 percent, 7.78 percent, and 11.87 percent, respectively, were the usual RCI increases [10]. The R1234yf framework has a 4.0-7.0% lower cooling limit and a 3.6-4.5% COP.…”

Section: Introductionmentioning

confidence: 92%

Study the Effect of Adding Heat Exchanger on the Refrigeration System Performance

Jasim

Alaiwi

2023

DJES

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Internal, or liquid-suction, heat exchangers are used with the primary goal of ensuring the entry of refrigerant in the liquid phase to the expansion device. The greatest COP gain is primarily determined by the thermodynamic parameters linked to the relative increase in refrigerating effect. Large latent heat of vaporization refrigerants often does not gain as much from condenser subcooling in support of a cooling system. Computational fluid dynamics (CFD) is used to study the effects of the turbulence model, which requires the solution of two transport equations. A technique was developed to study the thermal effect on the heat exchange process between two fluids. To observe the temperature effect on 17 tubes, the diameter was altered twice, first to 6 mm and then to 4 mm. The flow procedure happened in one direction, and the tube that contains the tubes had a diameter of 50 mm. The best-case scenario is the case where the pipe diameter is 4 mm and the heat exchanger are 300 mm in length. Through the results, the enthalpy was improved in the simulated cases to 423.2 h [KJ/M]. The length of the heat exchanger greatly affects the values of the exit temperatures and the temperature difference. For a length of 225 mm, the temperature reached 15.73 °C, and for 300 mm, it reached 13.847 °C. The significant reduction in temperatures helps increase the coefficient in the refrigeration cycle. A high coefficient of cooling in the heat exchanger appears when the length is 300 mm compared to other lengths.

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Section: Introductionmentioning

confidence: 92%

Study the Effect of Adding Heat Exchanger on the Refrigeration System Performance

Jasim

Alaiwi

2023

DJES

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“…Penelitian yang dilakukan oleh [14] menyebutkan bahwa penggunaan LSHX berpengaruh terhadap penurunan temperatur evaporasi, peningkatan temperatur subcooling, peningkatan kapasitas refrigerasi, peningkatan kerja kompresor dan peningkatan COP. Selanjutnya [15] menyebutkan bahwa LSHX dapat meningkatkan COP dan [16] dalam penelitiannya mendapatkan hasil bahwa LSHX dapat meningkatkan COP dan efektifitas pada sistem AC.…”

Section: Pendahuluanunclassified

“…Penelitian yang dilakukan oleh [14] menyebutkan bahwa penggunaan LSHX berpengaruh terhadap penurunan temperatur evaporasi, peningkatan temperatur subcooling, peningkatan kapasitas refrigerasi, peningkatan kerja kompresor dan peningkatan COP. Hasil penelitian sejalan dengan penelitian terdahulu yang menunjukkan bahwa penggunaan liquid suction heat exchanger dapat meningkatkan kapasitas pendinginan.…”

Section: Gambar 6 Grafik Hasil Perhitungan Kapasitas Pendinginanunclassified

Pengaruh Liquid Suction Heat Exchanger Terhadap Kinerja Sistem Pendingin Pada Mesin Portable Chiller

Sulistiono,

Trisno

2023

JRM

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When the Covid-19 pandemic occured, most of the industries and public facilities were not used properly, but the cooling machines was still used, resulting in large consumption of power and electrical energy. Along with high energy consumption where the availability of energy is running low, savings are needed. As an alternative so that the cooling machine can save energy is to use the subcooling method, namely the addition of a liquid suction heat exchanger on a spiral portable chiller with 29 spirals. Furthermore, the refrigerant used in the portable chiller is R407c. This study aims to determine the effect and effectiveness of Liquid Suction Heat Exchanger on a portable chiller. The results obtained are the coefficient of performance on the non-Liquid Suction Heat Exchanger portable chiller is 4,699 with a cooling capacity of 6,668 kW and compressor performance of 1,419 kW while the portable chiller with the addition of Liquid Suction Heat Exchanger, the Coefficient Of Performance obtained is 5,197 with a cooling capacity of 6,719 kW and compressor performance of 1,219 kW. From the calculation above, the use of a liquid suction heat exchanger in a portable chiller can increase the cooling capacity by 1,97 %.

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Review of hydrocarbon refrigerants as drop-in alternatives to high-GWP refrigerants in VCR systems: The case of R290

Ibrahim,

Kadhim,

Hammoodi

et al. 2024

Cleaner Engineering and Technology

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The effect the effectiveness of the liquid suction heat exchanger to performance of cold storage with refrigerant R22, R404A and R290/R600a

Cited by 3 publications

References 4 publications

Study the Effect of Adding Heat Exchanger on the Refrigeration System Performance

Study the Effect of Adding Heat Exchanger on the Refrigeration System Performance

Pengaruh Liquid Suction Heat Exchanger Terhadap Kinerja Sistem Pendingin Pada Mesin Portable Chiller

Review of hydrocarbon refrigerants as drop-in alternatives to high-GWP refrigerants in VCR systems: The case of R290

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