Sistem Kontrol Temperatur Air pada Proses Pemanasan dan Pendinginan dengan Pompa sebagai Pengoptimal

Authors

  • Heru Sagito Palka Jurusan Fisika, FMIPA, Universitas Andalas
  • Meqorry Yusfi Jurusan Fisika, FMIPA, Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.5.3.222-227.2016

Abstract

Perancangan sistem kontrol temperatur air pada proses pemanasan dan pendinginan menggunakan dua buah elemen Peltier dengan pompa sebagai pengoptimaltelah dilakukan.Keypad 3x4 digunakan untuk memberikan input nilai temperatur yang diinginkan lalu ditampilkan oleh LCD 2x16. Sensor LM35 digunakan sebagai pendeteksi perubahan nilai temperatur air. Mikrokontroler ATmega8535 akan memproses dan membandingkan nilai temperatur acuan dan nilai temperatur awal yang dideteksi oleh sensor. Apabila nilai temperatur acuan lebih besar dari nilai temperatur awal, maka sistem pemanas aktif. Apabila nilai temperatur acuan lebih kecil dari nilai temperatur awal,maka sistem pendingin aktif. Sistem kontrol on-off aktif untuk mengontrol temperatur sampai nilai yang sesuai. Sisi panas dan sisi dingin elemen Peltier dimanfaatkan sebagai pemanas dan pendingin. Proses pemindahan kalor terjadi secara konduksi melalui waterblock dan secara konveksi melalui pompa. Sistem kontrol dapat mempertahankan temperatur air yang diinginkan dengan kesalahan sebesar0,5 oC. Kemampuan elemen Peltier menurun seiring bertambahnya massa air dan meningkat dengan bertambahnya jumlah elemen Peltier yang digunakan. Pada tegangan 12 V/3 A, satu elemen Peltier dapat menurunkan temperatur air bermassa 50 g hingga 19,3oC.

Kata kunci : elemen Peltier, kontrol on-off, LM35

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Published

2016-07-03

Issue

Vol. 5 No. 3 (2016)

Section

Articles

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Copyright (c) 2016 Heru Sagito Palka, Meqorry Yusfi

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