THERMAL-MECHANICAL MODELING AND ANALYSIS OF SPINDLE-TAPERED ROLLER BEARING SYSTEM
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): SEONG-WOOK HONG , VAN-CANH TONG
Abstract: Tapered roller bearing (TRB) has been widely used in rotating machinery because of its high-load-carrying capacity. However, occurrence of high temperature inside TRB, due to the long contact lines between rollers and races and the large sliding friction between roller ends and guide flanges, often becomes a great challenge to utilization of TRB. This paper investigates the thermal behavior of a spindle-TRB system with consideration of rotational speed and radial load. To this end, first, a thermo-mechanical model of rotor-bearing system is developed to provide the frictional heat generation, heat transfer procedure, thermal expansion and transient temperature of the system components. Then, the spindle system thermal behavior is evaluated systematically. Simulation results show the high dependence of temperature on bearing loads, rotational speed. Finally, the steady-state temperature of the system is validated with existing experimental data.
- Publication Date: 22-Feb-2015
- DOI: 10.15224/978-1-63248-039-2-16
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STUDY ON HORIZONTAL EVAPORATOR TUBE WITH DIFFERENT OUTER SURFACE ROUGHNESS UNDER DIFFERENT FEEDER WATER LOAD
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): ALIAS MOHD NOOR , MUHAMMAD HANAFI MD SAH , SHEIKH HUSSAIN SHAIKH SALLEH , LIM CHIH HOO
Abstract: Desalination plant in marine transportation consumes large amount of fresh water for a single trip. The plant is also widely used in regions where very low rainfall but near to the sea. The most important component of a desalination plant is the evaporator. An effective and efficient evaporator will enhance the collection of condensate water which can reduce the occupied space of the plant especially for marine transportation. In this study a horizontal aluminum evaporator with varying outer roughness was used under different feeder water load. The performance of each evaporator was evaluated based on the collected amount of condensate water. In parallel with the experimental works, correlation of variables were derived based on the film wise condensation Nusselt’s equation, heat transfer equation and falling film equation. The mathematical correlation which was non-linear equation was solved using Maple software and the theoretical results were then compared to the experimental result
- Publication Date: 22-Feb-2015
- DOI: 10.15224/978-1-63248-039-2-17
- Views: 0
- Downloads: 0