Faye C. McQuiston is professor emeritus of Mechanical and Aerospace Engineering at Oklahoma State University, Stillwater, Oklahoma. He received B.S. and M.S. degrees in mechanical engineering from Oklahoma State University in 1958 and 1959 and a Ph.D. in mechanical engineering from Purdue University in 1970. Dr. McQuiston joined the Oklahoma State faculty in 1962 after three years in industry. He was a National Science Foundation Faculty Fellow from 1967 to 1969. He is an active member of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), recently completing a term as vice president. He has served on the Board of Directors and the Technology, Education, Member, and Publishing Councils, and he is past member of the Research and Technical, Education, and Standards Committees. He was honored with the Best Paper Award in 1979, the Region VII Award of Merit in 1981, the Distinguished Service Award in 1984, and the E.K. Campbell Award in 1986. He was also elected to the grade of Fellow in1986. Dr. McQuiston is a registered professional engineer and a consultant to several system design and equipment manufacturing firms. He is active in research related to the design of heating and air-conditioning systems, particularly heat-exchanger design and simulation and load calculations. He has written extensively on heating and air conditioning and is the coauthor of a basic fluid mechanics and heat transfer text. Jerald D. Parker is a professor emeritus of mechanical engineering at Oklahoma Christian University after serving 33 years on the mechanical engineering faculty at Oklahoma State University. He received B.S. and M.S. degrees in mechanical engineering from Oklahoma State University in 1955 and 1958 and a Ph.D. in mechanical engineering from Purdue University in 1961. During his tenure at Oklahoma State, he spent one year on leave with the engineering department of Du Pont in Newark, Delaware. He has been active at both the local and national level in ASME, where he is a fellow. In ASHRAE he has served as chairman of the Technical Committee on Fluid Mechanics and Heat Transfer, chairman of a standards project committee, and a member of the Continuing Education Committee. He is a registered professional engineer. Hr is coauthor of a basic text in fluid mechanics and heat transfer and has contributed articles for handbooks, technical journals, and magazines. His research has been involved with ground-coupled heat pumps, solar-heated asphalt storage systems, and chilled-water storage and distribution. He has served as a consultant in cases involving performance and safety of heating, cooling, and process systems. Jeffrey D. Spitler is a professor of mechanical and aerospace engineering at Oklahoma State University, Stillwater. He received B.S. , M.S., and Ph.D. degrees in mechanical engineering at the University of Illinois, Urban-Champaign, in 1983, 1984, and 1990. He joined the Oklahoma State University faculty in 1990. He is an active member of ASHRAE and has served on several technical committees, a standards committee, and the Student Activities Committee. He also serves on the board of directors of the International Building Performance Simulation Association. He is a registered professional engineer and has consulted on a number of different projects. He is actively involved in research related to design load calculations, ground source heat pump systems, and pavement heating systems.