• J.-C. Chang, J.-R. Chen, Y.-C. Chung, C.Y. Liu, Z.-D. Tsai
  NSRRC, Hsinchu
• M. Ke
  NTUT, Taipei

The stability of air temperature in the storage ring tunnel is one of the most critical factors. Therefore, a series of air conditioning system upgrade studies and projects have been conducted at the Taiwan Light Source (TLS). The global air temperature variation related to time in the storage ring tunnel has been controlled within ±0.1 degree C for years. This study is aimed at more precise temperature control. Some temperature control schemes are applied on this study. We also performed computational fluid dynamics (CFD) to simulate the flow field and the spatial temperature distribution in the storage ring tunnel.