1. Department of Air Conditioning and Refrigeration Engineering, National Taipei University of Technology, 1 Sec. 3., Chung-Hsiao E. Road, Taipei 106, Taiwan, R.O.C.
2. Precision Instrument Development Center, National Science Council, 20 R&D Road VI, Science-Based Industrial Park, Hsinchu 300, Taiwan R.O.C.
3. Department of Air Conditioning and Refrigeration Engineering, National Taipei University of Technology, Taipei 106, Taiwan R.O.C.