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Michael
J. Witte,
Ph.D.
TITLE Principal Engineer PRINCIPAL DUTIES AND RESPONSIBILITIES Energy Systems Analysis EDUCATION B.S.M.E., Valparaiso University,1981 M.S.M.E., University of Illinois, 1983 Ph.D.M.E., University of Illinois, 1989 EXPERIENCE Dr. Witte supports GARD's energy program activities with software development, energy simulation studies, literature reviews, economic analysis, data analysis and technology assessment studies. His current activities include simulating gas cooling equipment such as gas heat pumps, desiccant systems, and chillers; developing libraries of parameterized DOE-2 input files for gas cooling screening tools; testing the EnergyPlus software, developing equipment models for EnergyPlus, and investigating topics of current interest such as the impacts of deregulation on the gas and electric industries. He has also developed a database to estimate the overall resource energy efficiency and related emissions of delivering natural gas and electricity to end-use natural gas or electric appliances. Dr. Witte is the principal investigator for EnergyPlus Testing and Support. This project includes conducting formal testing of the EnergyPlus building energy simulation program currently under development. The software testing includes comparative, analytical, and empirical tests. Software support for EnergyPlus includes development of utility software, coordinating beta version publication, and answering user questions via e-mail. He is currently developing EnergyPlus equipment models for active desiccant dehumidifiers, direct-fired gas absorption chillers, and gas engine chillers. This project involves converting existing models primarily from DOE-2.1E and custom functions developed for other work to FORTRAN 90 and incorporating them into EnergyPlus. For the past several years, Dr. Witte has been responsible for the parameterized DOE-2.1E input files which form the heart of the simulation engine in DesiCalc and Gas Cooling Guide. These software screening tools provide users with easy access to sophisticated hourly simulations via interactive front end software which collects user inputs and passes parameters to the simulation engine. Prior to joining GARD, Dr. Witte taught in the area of building energy systems as the Oberdick Fellow in the Building Sciences at the University of Michigan. Prior to this, Dr. Witte worked for six years as a project coordinator at the BLAST Support Office at the University of Illinois. In this position, he provided user support and software development services for the BLAST building energy simulation software under contract to the U. S. Army Corps of Engineers. This work required becoming familiar with the BLAST FORTRAN code for debugging, implementing fixes, and incorporating enhancements. Through this work, Dr. Witte has gained extensive experience in the area of building energy simulation software. Through his active participation in the International Building Performance Simulation Association (IBPSA) and ASHRAE Technical Committee on Energy Calculations (TC 4.7), he stays abreast of ongoing developments in the HVAC and energy simulation fields. TECHNICAL PUBLICATIONS Witte, M.J., Henninger, R.H., Glazer, J, and D.B. Crawley, "Testing and Validation of a New Building Energy Simulation Program," Proceedings, Building Simulation 2001, International Building Performance Simulation Association (IBSPA), Rio de Janeiro, Brazil, August 2001. Kosar, D.R., and M.J. Witte, “Emerging, Cost-Effective Applications for Desiccant Dehumidification,” AIRAH Journal (Australian Institute of Refrigeration, Air Conditioning and Heating), March 2000. L.G. Harriman III, M. Czachorski, M.J. Witte, and D.R. Kosar, "Evaluating Active Desiccant Systems for Ventilating Commercial Buildings," ASHRAE Journal, October 1999. Witte, M.J., and D.R. Kosar, "Emerging, Cost-Effective Applications for desiccant Dehumidification in the U.S.," 11th Symposium on Improving Building Systems in Hot and Humid Climates, June 1998. Kosar, D.R., M.J. Witte, D.B. Shirey III, and R.L. Hedrick, "Standard 62-1989 Dehumidification Issues," ASHRAE Journal, March 1998. Kosar, D.R., and M.J. Witte, “Emerging, Cost-Effective Applications for Desiccant Dehumidification in Australia,” Australian Institute of Refrigeration, Air Conditioning and Heating (AIRAH) Conference, April 1998. Witte, M.J., and R.L. Hedrick, Ventilation Air Treatment Analysis: Preliminary Market Segmentation, Gas Research Institute, March 1997 Kosar, D.R., and M.J. Witte, "Desiccant Applications - What's Beyond Supermarkets, Ice Arenas, and Refrigerated Warehouses," Natural Gas Cool Times, American Gas Cooling Center, Volume 8, No. 1, Jan./Feb. 1997. Witte, M.J., J. Glazer, and R.H. Henninger, Market Opportunities for Applied Natural Gas Engine-Driven Hybrid Chiller Plants, Gas Research Institute, GRI-97/0026, January 1997. Glazer, J., and M.J. Witte, Optimal Mix of Gas and Electric Packaged Cooling Units, Gas Research Institute, GRI-96/0269, September 1996. Witte, M.J., R.H. Henninger, and J. Glazer, Economic Analysis Of Packaged Engine-Driven Rooftop Gas Air Conditioners for 49 Cities, Gas Research Institute, GRI-96/0324, August 1996. Witte, M.J., J. Glazer, R.H. Henninger, and N.P. Leslie, “An Hourly Simulation Model for Engine-Driven Gas Heat Pumps, Proceedings of CLIMA 2000, London, November 1993. Henninger, R.H., M.J. Witte, T.L. Cornell, and J. Glazer, Commercial Building Systems Analysis, Gas Research Institute, GRI-93/0349, June 1993. Witte, M.J., J. Glazer, R.H. Henninger, and N.P. Leslie, “New Capabilities of DOE-2 to Simulate Engine-Driven Gas Heat Pumps”, International Gas Research Conference, November 1992. Hedrick, R.L., M.J. Witte, N.P. Leslie and W.W. Bassett, "Furnace Sizing Criteria for Energy-Efficient Setback Strategies," ASHRAE Transactions, Volume 98, Part 1, 1992. Von Thun, Guido, and M. J. Witte, "Applying Building Simulation Tools to Optimize System Sizing and Operation Strategies", ASHRAE Transactions, Volume 97,Part1, 1991. Leslie, N.P., R.L. Hedrick, R.H. Henninger, and M.J. Witte, Conventional Research House Variable Speed Electric Heat Pump Heating Characterization Test Results, Gas Research Institute, GRI-91/0084, February 1991. Leslie,
N.P., R.L. Hedrick, and M.J. Witte, Conventional
Research House Variable Speed Electric Heat Pump Cooling Characterization Test
Results, Gas Research Institute, Witte, M. J., C. O. Pedersen, and J. D. Spitler, "Techniques for Simultaneous Simulation of Buildings and Mechanical Systems in Heat Balance Based Energy Analysis Programs", Proceedings of Building Simulation '89, pp. 169-174, International Building Performance Simulation Association, Vancouver, British Columbia, Canada, June 1989. Maloney, D. M., C. O. Pedersen, and M. J. Witte, "Development of a Radiant Heating System Model for BLAST", ASHRAE Transactions, Volume 94, Part 1, pp. 1795-1808, 1988. Various publications on salt gradient and porous medium solar ponds, 1983-1987.
AFFILIATIONS ASHRAE (American Society of Heating, Refrigerating & Air Conditioning Engineers) IBPSA (International Building Performance Simulation Association) ASES (American Solar Energy Society) Tau Beta Pi |
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