Heat transfer modelling of a novel vane compressor

• Main Author: Lim, Wei Xian
• Other Authors: Ooi Kim Tiow
• Format: Final Year Project
• Language: English
• Published: 2018
• Subjects: DRNTU::Engineering
• Online Access: http://hdl.handle.net/10356/75011
• Institution: Nanyang Technological University

The friction between two moving bodies relative to each other, produces heat energy. Hence, heat transfer study is an important topic in mechanical engineering especially in the compressor industry. Inappropriate design considerations related to heat transfer could bring significant negative impact on compressor performance or may even hinder its operation. In this report, a well-constructed theoretical heat transfer model has been integrated into the lumped numerical simulation model of a novel vane compressor or in short NVC. To study the effects of heat transfer effect on its overall performance. Two approaches are used in modelling the heat transfer effects, and these are the lumped thermal conductance and thermal resistance methods. The simulation results show that the coefficient of performance (COP) of NVC is affected negatively when considering the heat transfer between the working fluid and the walls of the suction and compression chambers. Furthermore, parametric studies show that more heat is generated when operating speed of the compressor increases, leading to even poorer compressor performance. Hence, it is concluded that for a more comprehensive simulation study, it is necessary to account for the heat transfer effects in the compressor especially when the operational speed exceeds 2500 rev/min.