Sampoerno, Achmad Tedjo (2025) ANALISIS PENGARUH VARIASI DIMENSI DIAMETER DAN PANJANG PIPA KAPILER TERHADAP KARAKTERISTIK DAN COEFFICIENT OF PERFORMANCE PADA KULKAS R134A. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.
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Abstract
Kinerja sistem pendingin pada kulkas sangat dipengaruhi oleh dimensi pipa kapiler, komponen penting yang mengatur aliran refrigeran dari tekanan tinggi ke tekanan rendah. Variasi dimensi pipa kapiler dapat memengaruhi koefisien performansi (Coefficient of Performance/COP) dan efisiensi energi, namun pengaruh spesifiknya belum sepenuhnya dipahami, terutama pada kulkas yang menggunakan refrigeran R134A. Penelitian ini bertujuan untuk menjawab permasalahan mengenai bagaimana variasi diameter (0,26 mm, 0,28 mm, 0,31 mm) dan panjang pipa kapiler (50 cm, 100 cm, 150 cm) memengaruhi karakteristik termodinamika, seperti suhu, tekanan, dan distribusi aliran refrigeran, serta untuk menentukan kombinasi dimensi optimal yang menghasilkan efisiensi terbaik. Metode penelitian meliputi kajian literatur, observasi lapangan, dan pengujian eksperimen dengan pengumpulan data suhu dan tekanan pada titik-titik kritis dalam siklus refrigerasi. Hasil menunjukkan bahwa dimensi pipa kapiler secara signifikan memengaruhi COP, kapasitas pendinginan, dan konsumsi energi. Performansi terbaik ada pada pipa kapiler diameter 0,28 mm dan panjang 50 cm dengan nilai COP 3,43. Diameter ini memberikan keseimbangan optimal antara laju aliran dan penurunan tekanan. Panjang pipa yang lebih pendek meminimalkan rugi tekanan dan menghasilkan kinerja sistem terbaik. Penelitian ini memberikan panduan praktis untuk desain sistem pendingin yang hemat energi dan ramah lingkungan, sekaligus membuka peluang penelitian lanjutan untuk mengoptimalkan dimensi pipa kapiler pada aplikasi pendinginan lainnya.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | pendingin, dimensi, kapiler, refrigeran, tekanan, temperatur |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin |
| Depositing User: | 1422100010 Achmad Tedjo Sampoerno |
| Date Deposited: | 15 Jun 2026 08:43 |
| Last Modified: | 15 Jun 2026 08:43 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/36194 |
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