ABSTRAK: Tujuan penelitian ini adalah untuk mengetahui pengaruh laju alir, temperatur umpan dan a... more ABSTRAK: Tujuan penelitian ini adalah untuk mengetahui pengaruh laju alir, temperatur umpan dan arah aliran terhadap koefisien perpindahan panas overal (U). Alat penukar panas yang digunakan adalah Plate and Frame tipe TRIMGS 10. Laju alir fluida panas divariasikan 0,3 dan 0,253 kg/s; laju alir fluida dingin divariasikan 0,276 dan 0,22 kg/s; temperatur masuk fluida panas 40, 45, 50 o C; arah aliran divariasikan co-current dan counter-current. Hasil penelitian menunjukkan bahwa semakin besar laju fluida panas dan fluida dingin maka koefisien perpindahan panas menyeluruh semakin besar. Semakin tinggi temperatur masuk fluida panas maka koefisien perpindahan panas menyeluruh semakin besar. Nilai koefisien perpindahan panas overall paling besar diperoleh pada temperatur fluida masuk 50°C, laju alir fluida dingin 0,276 kg/s, laju alir fluida panas 0,3 kg/s yaitu sebesar 140,6532 W/m 2 °C pada aliran counter-current dan 135,4576 W/m 2 °C pada aliran co-current. Jenis aliran counter-current memberikan hasil yang lebih memuaskan dibanding jenis aliran co-current. Kata Kunci: plate and frame, perpindahan panas, penukar panas, koefisien perpindahan panas menyeluruh ABSTRACT: The purpose of this study is to know the effects of mass flow rate, inlet temperature and type of flow againts overall heat transfer coefficient (U). Heat exchanger used in this study was plate and frame type of TRIMGS 10. Mass flow rate of hot fluida was variated into 0.3 and 0.253 kg/s; mass flow rate of cold fluida was variated into 0.276 and 0.22 kg/s; inlet temperature of hot fluida was variated into 40, 45, 50 o C; type of flow was variated into co-current and counter current. The results showed that mass flow rate of hot and cold fluid influenced overall heat transfer coefficient. Also, the higher inlet temperature, the the bigger overall heat transfer coefficient obtained. In this study, the biggest of U value was obtained in variable of inlet temperatur 50°C, mass flow rate of cold fluid 0.276 kg/s, mass flow rate of hot fluid 0.3 kg/s, which were 140.6532 W/m 2 °C using type of counter-current flow and 135.4576 W/m 2 °C using type of co-current flow. Type of counter-current flow gave more satisfactory result of U value than type of co-current flow Keywords: plate and frame, heat transfer, heat exchanger, overall heat transfer coefficient
ABSTRAK: Tujuan penelitian ini adalah untuk mengetahui pengaruh laju alir, temperatur umpan dan a... more ABSTRAK: Tujuan penelitian ini adalah untuk mengetahui pengaruh laju alir, temperatur umpan dan arah aliran terhadap koefisien perpindahan panas overal (U). Alat penukar panas yang digunakan adalah Plate and Frame tipe TRIMGS 10. Laju alir fluida panas divariasikan 0,3 dan 0,253 kg/s; laju alir fluida dingin divariasikan 0,276 dan 0,22 kg/s; temperatur masuk fluida panas 40, 45, 50 o C; arah aliran divariasikan co-current dan counter-current. Hasil penelitian menunjukkan bahwa semakin besar laju fluida panas dan fluida dingin maka koefisien perpindahan panas menyeluruh semakin besar. Semakin tinggi temperatur masuk fluida panas maka koefisien perpindahan panas menyeluruh semakin besar. Nilai koefisien perpindahan panas overall paling besar diperoleh pada temperatur fluida masuk 50°C, laju alir fluida dingin 0,276 kg/s, laju alir fluida panas 0,3 kg/s yaitu sebesar 140,6532 W/m 2 °C pada aliran counter-current dan 135,4576 W/m 2 °C pada aliran co-current. Jenis aliran counter-current memberikan hasil yang lebih memuaskan dibanding jenis aliran co-current. Kata Kunci: plate and frame, perpindahan panas, penukar panas, koefisien perpindahan panas menyeluruh ABSTRACT: The purpose of this study is to know the effects of mass flow rate, inlet temperature and type of flow againts overall heat transfer coefficient (U). Heat exchanger used in this study was plate and frame type of TRIMGS 10. Mass flow rate of hot fluida was variated into 0.3 and 0.253 kg/s; mass flow rate of cold fluida was variated into 0.276 and 0.22 kg/s; inlet temperature of hot fluida was variated into 40, 45, 50 o C; type of flow was variated into co-current and counter current. The results showed that mass flow rate of hot and cold fluid influenced overall heat transfer coefficient. Also, the higher inlet temperature, the the bigger overall heat transfer coefficient obtained. In this study, the biggest of U value was obtained in variable of inlet temperatur 50°C, mass flow rate of cold fluid 0.276 kg/s, mass flow rate of hot fluid 0.3 kg/s, which were 140.6532 W/m 2 °C using type of counter-current flow and 135.4576 W/m 2 °C using type of co-current flow. Type of counter-current flow gave more satisfactory result of U value than type of co-current flow Keywords: plate and frame, heat transfer, heat exchanger, overall heat transfer coefficient
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