Pengaruh Kecepatan Fluida Pendingin (Udara) Terhadap Unjuk Kerja Dan Karakteristik Perpindahan Panas Pada Radiator Sepeda Motor Yamaha Nmax 155CC
Abstract
The cooling system is the main part in an engine that functions to maintain the condition of the engine so that it remains at working temperature, which is 80℃-90℃. To maintain these conditions requires optimal work of the cooling system. One of the most important components of the cooling system is the radiator. This study uses the ε-NTU method to analyze the data. The tool used in this research is a 155cc Yamaha Nmax motorcycle radiator with vertical flow type, flat tube and louvered fins, fan as a simulated wind source. The coolant mixture used is 50% water + 50% radiator coolant while the air flow rate is constant at 4 lpm and the hot fluid temperature is set at a constant 80℃. The variation of air flow velocity used in this test is 4-8 m/s with an increase of 1 m/s to adjust the speed of air flow used by the Dimmer as a tool. From the tests that have been carried out, the largest air flow rate occurs at a fan speed of 8 m/s. The greatest heat transfer rate occurs at a fan speed of 8 m/s of 0.0735 KW and overall heat also occurs at a fan speed of 8 m/s which is 9.50 W/m2°C. Maximum radiator efficiency occurs at a fan speed of 5 m/s with a value of 7,59 Keywords : Effectivenes, ɛ-NTU Method, Nmax 155cc RadiatorPublished
Issue
Section
License
Copyright info for authors
1. Authors hold the copyright in any process, procedure, or article described in the work and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors retain publishing rights to re-use all or portion of the work in different work but can not granting third-party requests for reprinting and republishing the work.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) as it can lead to productive exchanges, as well as earlier and greater citation of published work.