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All Journal Jurnal Teknologi Terapan KURVATEK International Journal of Applied Technology Research Jurnal Difusi Industrial Research Workshop and National Seminar Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Triaji Pangripto Pramudantoro
Department Of Refrigeration & Air Conditioning Engineering, Politeknik Negeri Bandung
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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KAJI EKSPERIMENTAL RETROFIT R404A DENGAN REFRIGERAN RAMAH LINGKUNGAN R290 PADA FREEZER Kasni Sumeru; Triaji Pangripto Pramudantoro; Apip Badarudin; Ridwan Nugraha; Luga Martin Simbolon; Mohamad Firdaus bin Sukri
Jurnal Teknologi Terapan Vol 9, No 2 (2023): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v9i2.520

Abstract

R404A refrigerant is still widely used as the working fluid in freezers with temperatures below -30°C. However, because of R404A’s high global warming potential (GWP) value, its use as a working fluid should be stopped immediately. One alternative is an environmentally friendly refrigerant, that is R290. In this study, the R404A refrigerant was replaced by R290 in a freezer that can reach -40°C. In the case of replacing a refrigerant with a different type, the reference used is the same charging volume in the system. The filling mass of R290 is the ratio of the density of R404A to R290 at its evaporation temperature, which is -40°C. The amount of R404A’s mass filling is 170 g, while the amount of R290’s mass filling is 62.9 g. Based on a 120-minutes testing, replacing R404A with R290 has resulted in the reduction of power input by 6.0%, as well as in the slight increase of its cooling capacity, which is 2.42%. As a result of the input power decrease and the cooling capacity increase, the COP in the freezer also increased, namely by 8.05%. More importantly, if a leak occurs in the refrigerant, the replacement of R404A with R290 can help reduce gas emissions that contribute to global warming. It is because the GWP value of R404A refrigerant, which is 3922, is replaced by the GWP value of R290 refrigerant, which is only 3.
Kaji Eksperimen Retrofitting R134a dengan R290 Pada Mesin Chest Freezer Berdasarkan Massa dan Berdasarkan Temperatur Evaporasi Gisya Artanti Aulia; Apip Badarudin; Triaji Pangripto Pramudantoro
Prosiding Industrial Research Workshop and National Seminar Vol. 16 No. 1 (2025): Vol. 16 No. 1 (2025): Prosiding 16th Industrial Research Workshop and National
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v16i1.6645

Abstract

Refrigeran R134a telah banyak digunakan dalam sistem pendingin seperti chest freezer, namun memiliki Potensi Pemanasan Global (GWP) yang tinggi sekitar 1430, meskipun ODP nya nol. Sebagai alternatif yang lebih ramah lingkungan, R290 (Propana) memiliki ODP nol dan GWP sangat rendah sekitar 3, serta karakteristik termodinamika yang mendekati R134a. Penelitian ini bertujuan untuk membandingkan kinerja sistem yang di retrofit dari R134a ke R290 dengan dua metode pengisian yaitu berdasarkan massa dan berdasarkan temperatur evaporasi yang sama. Pengisian dilakukan dengan R134a sebanyak 150 gram, R290 berdasarkan massa sebanyak 60 gram dengan mengacu kepada perbandingan massa jenis dari kedua refrigeran, dan R290 berdasarkan temperatur evaporasi sebanyak 90 gram. Paramenter yang diamati meliputi waktu pendinginan, COP aktual, COP Carnot, Efisiensi, serta konsumsi energi listrik. Hasil menunjukan bahwa R290 mampu menurunkan waktu pendinginan menjadi 39-41 menit dibanding R134a yaitu 51 menit. Nilai COP aktual tertinggi ditemukan pada sistem dengan R290 berdasarkan temperatur evaporasi (2,12). Sedangkan, nilai efisiensi tertinggi diperoleh pada sistem yang menggunakan R134a (60,4%). Konsumsi listrik terbesar adalah ketika sistem menggunakan R290 berdasarkan temperatur evaporasi. Dari hasil tersebut R290 terbukti dapat digunakan sebagai alternatif R134a tidak hanya dari segi ramah lingkungan melainkan dari performansi nya.
Co-Authors Abd. Rasyid Syamsuri Adrianto S Afif Miftakh Hafidzudin Apip Badarudin Arda Rahardja Lukitobudi Cecep Sunardi Dhyta Aulia Nurhaniffah Evita Rahmania Lestari Gisya Artanti Aulia Hassan Muhammad Sumeru Kasni Sumeru Luga Martin Simbolon M. Fathan Sugih Bagja Markus Mochamad Fatih Gemadzan Mohamad Firdaus bin Sukri Mohamad Firdaus bin Sukri Muhamad Anda Falahuddin Muliawan, Rizki Nurshabi Juliansyah Ramdan Ridwan Nugraha Sri Murniati Sumeru Tandi Sutandi Windy Hermawan Mitrakusuma