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.