Pengaruh Variasi Fluida Pendingin terhadap Laju Pendinginan Engine Yamaha Nmax

Abstract

Radiator merupakan system pendingin dengan mengunakan cairan fluida sebagai alat penukar panas. Cara kerja radiator dengan menyalurkan panas yang dikeluarkan oleh mesin motor kemudian diserap oleh fluida radiator coolant. Perangkat radiator terdiri dari saluran cairan pendingin masuk dan saluran keluar mesin, kipas pendingin yang dipasang didepan atau dibelakang radiator, tangki cadangan cairan pendingin radiator dan cairan pendingin. Cairan pendingin pada radiator mempunyai peran yang sangat penting dalam membuang panas mesin ke lingkungan. Pada penelitian ini saya akan menganalisa perbedaan jenis variasi coolant yaitu air, prestone antifreeze, Seiken, premix coolant DCK, dan yamacoolant. terhadap laju pendinginan dan efektifitas radiator menggunakan variasi putaran 1600, 3000,5000 rpm dan waktu pengukuran 1, 5, dan 10 menit pada mesin Yamaha Nmax. Hasil penelitian yang telah dilakukan rata-rata laju perpindahan panas dan efektifitas radiator tertinggi terjadi pada fluida pendingin jenis Yamacoolant sebesar 1,992kW dan 0,726, kedua tertinggi terjadi pada fluida pendingin Prestone dimana nilai rata-rata laju perpindahan panas sebesar 1,918kW dan rata-rata efektifitas radiator sebesar 0,652, kemudian diikuti Seiken dimana rata-rata laju perpindahan panas sebesar 1,901kW dan efektifitas radiator 0,634, kemudian dilanjutkan DCK dimana rata-rata laju perpindahan panas sebesar 1,702kW dan efektifitas radiator sebesar 0,592 dan nilai rata-rata terkecil dialami oleh air mineral dimana laju perpindahan panas sebesar 1,542kW dan efektifitas radiator sebesar 0,501. Radiator is a cooling system using fluid as a heat exchanger. How the radiator works by channeling the heat released by the motor engine is then absorbed by the radiator coolant fluid. The radiator device consists of a coolant inlet and engine outlet, a cooling fan mounted in front or behind the radiator, a radiator coolant reserve tank and coolant. Coolant in the radiator has a very important role in dissipating engine heat to the environment. In this study, I will analyze the different types of coolant variations, namely water, prestone antifreeze, Seiken, premix coolant DCK, and yamacoolant. on the cooling rate and radiator effectiveness using rotation variations of 1600, 3000,5000 rpm and measurement times of 1, 5, and 10 minutes on the Yamaha Nmax engine. The results of the research that have been carried out are the highest average heat transfer rate and radiator effectiveness occur in the Yamacoolant type cooling fluid of 1.992kW and 0.726, the second highest occurs in Prestone cooling fluid where the average heat transfer rate is 1.918kW and the average effectiveness radiator of 0.652, followed by Seiken where the average heat transfer rate was 1.901kW and the effectiveness of the radiator was 0.634, then followed by DCK where the average heat transfer rate was 1.702kW and the radiator effectiveness was 0.592 and the smallest average value was experienced by mineral water. where the heat transfer rate is 1.542kW and the radiator effectiveness is 0.501.