YUAN FAJAR NURMANSYAH, . (2026) STUDI EKSPERIMEN PENGARUH INPUT KALOR PADA GENERATOR TERHADAP PERFORMA SISTEM PENDINGIN ABSORPSI MENGGUNAKAN REFRIGERAN AIR. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Tingginya temperatur udara didalam kabin mobil yang diparkir di ruang terbuka akibat paparan radiasi matahari dapat menimbulkan ketidaknyamanan termal, kerusakan komponen interior, serta membahayakan kesehatan pengguna. Salah satu alternatif solusi yang dapat diterapkan adalah penggunaan sistem pendingin absorpsi yang memanfaatkan energi panas sebagai sumber penggerak utama. Penelitian ini bertujuan untuk menganalisis pengaruh variasi input kalor pada generator terhadap performa sistem pendingin absorpsi menggunakan refrigeran air. Metode penelitian yang digunakan adalah metode eksperimen dengan merancang dan menguji sistem pendingin absorpsi skala labolatorium. Variasi input kalor pada generator dilakukan menggunakan pemanas listrik dengan daya 100 watt, 200 watt, dan 300 watt. Parameter yang diamati meliputi temperatur pada setiap titik pengukuran, tekanan sisi tekanan tinggi dan tekanan rendah, serta perhitungan parameter termodinamika untuk menentukan nilai Coefficient of performace (COP). Pengujian dilakukan dengan durasi pengambilan data selama dua jam untuk setiap variasi daya. Hasil penelitian menunjukan bahwa peningkatan input kalor pada generator menyebabkan kenaikan temperatur dan tekanan, yang mengindikasikan meningkatnya proses desorpsi refrigeran air didalam generator. Hasil Pengujian menunjukan bahwa nilai Coefficient of Perfomance (COP) sistem pada variasi daya generator 100 watt, 200 watt, dan 300 watt berturut-turut sebesar 0,902; 0,955 dan 0,964. Kenaikan nilai COP terlihat signifikan dari 100 watt ke 200 watt, namun cenderung stabil pada daya 300 watt akibat meningkatnya kehilangan panas (heatloss) ke lingkungan. Kata Kunci: Sistem Pendingin Absorpsi, Generator, Performa, kerugian panas, air. ***** High air temperatures inside car cabins parked in open spaces due to exposure to solar radiation can cause thermal discomfort, damage to interior components, and endanger the health of users. One alternative solution that can be applied is the use of an absorption cooling system that utilizes heat energy as its main driving force. This study aims to analyze the effect of heat input variations in the generator on the performance of absorption cooling systems using water refrigerant. The research method used is an experimental method by designing and testing a laboratory-scale absorption cooling system. Heat input variations in the generator were carried out using electric heaters with power ratings of 100 watts, 200 watts, and 300 watts. The parameters observed included the temperature at each measurement point, the high-pressure and low-pressure sides, and the calculation of thermodynamic parameters to determine the Coefficient of Performance (COP) value. The testing was carried out with a data collection duration of two hours for each power variation. The results of the study show that an increase in heat input to the generator causes an increase in temperature and pressure, which indicates an increase in the desorption process of water refrigerant inside the generator. The test results show that the Coefficient of Performance (COP) values of the system at generator power variations of 100 watts, 200 watts, and 300 watts are 0.902, 0.955, and 0.964, respectively. The increase in COP value is significant from 100 watts to 200 watts, but tends to be stable at 300 watts due to increased heat loss to the environment. Keyword: Absorption cooling system, Generator, COP, Heat loss, Water
| Item Type: | Thesis (Sarjana) |
|---|---|
| Additional Information: | 1). Dr. Darwin Rio Budi Syaka, M.T. ; 2). Nugroho Gama Yoga, M.T. |
| Subjects: | Teknologi dan Ilmu Terapan > Teknologi (umum) Teknologi dan Ilmu Terapan > Teknik Mesin, Mekanika Teknik |
| Divisions: | FT > S1 Teknik Mesin |
| Depositing User: | Yuan Fajar Nurmansyah . |
| Date Deposited: | 04 Feb 2026 02:33 |
| Last Modified: | 04 Feb 2026 02:33 |
| URI: | http://repository.unj.ac.id/id/eprint/64761 |
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