Susanto, Agus (2016) Aplikasi Sistem Kontrol PI (Proporsional Integral) Pada Mesin Pendingin Tipe Lempeng Sentuh Sebagai Kontrol Katup Ekspansi Otomatis. Undergraduate thesis, Politeknik Negeri Jember.
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Abstract
One way to make energy savings in the freezing process, by freezing gradually using a cooling machine touch plates type. Based on previous has developed a touch plate type cooling machine, but the performance cooling machine less optimal becouse the process of controlling temperature is done manually. On this research aim to do the process of designing and manufacturing of automatic expansion control using PI control system, for controling the temperature of evaporator in order to obtain a more optimal result of freezing process. LM35 sensor is used to read the evaporator temperature where sensor reading results are used as input signals to PI control system. Based on the test result LM35 sensor had a sensitivity reading of 0,009335 V/oC. Performance PI control system in this research obtained a good response on the value Kp 20 and Ki 10, where with these values to achive the set point takes time 251 seconds, with a lower overshoot maximum value that is -2,4oC. Cooling results obtained in this research using automatic expansion valve control system obtained the cooling process more faster and more efficient of energy needs that is 0,265 kWh.
| Item Type: | Thesis (Undergraduate) | ||||||
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| Subjects: | 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 443 - Teknik Enerji | ||||||
| Divisions: | Jurusan Teknik > Prodi D4 Teknik Energi Terbarukan > Tugas Akhir | ||||||
| Depositing User: | Sri Supriyatiningsih | ||||||
| Date Deposited: | 12 Mar 2026 03:57 | ||||||
| Last Modified: | 12 Mar 2026 03:58 | ||||||
| URI: | https://sipora.polije.ac.id/id/eprint/54941 |
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