1. KEMA, P.O. Box 9035, 6800 ET Arnhem, The Netherlands
2. University of Twente, Faculty of Engineering, Laboratory of Thermal Engineering, P.O. Box 217, 7500 AE Enschede, The Netherlands
3. University of Kentucky, 107 S. J. Whalen Building, 533 S. Limestone St., Lexington, Kentucky 40506-0043, United States