1. Graduate Institute of Precision Manufacturing, National Chin-Yi University of Technology, Taichung, Taiwan
2. Department of Refrigeration, Air Conditioning and Energy Engineering, National Chin-Yi University of Technology, Taichung, Taiwan
3. Department of Refrigeration and Air Conditioning, Politeknik Negeri Bandung, Bandung, Indonesia
4. Heating, Ventilating, Air Conditioning and Refrigerating Section, Universiti Kuala Lumpur Malaysia France Institute, Kuala Lumpur, Malaysia