10.2190/DPWE-5LGG-8HYN-A64U DPWE5LGG8HYNA64U 2 A Crop Drying Model for Waste Heat Utilization Assessment 295 305 20020509 20020509 20020509 20020509 DPWE5LGG8HYNA64U.pdf http://baywood.metapress.com/link.asp?target=contribution&id=DPWE5LGG8HYNA64U 4 John D. Keenan Robert N. Amundsen University of Pennsylvania, Philadelphia New York Institute of Technology, Old Westbury This is the sixth in a series of articles on the development of a methodology for assessing waste heat utilization technologies and optimizing the mix of technologies used on a site-specific basis. As part of this effort, a model for simulating the crop drying option has been developed. The model uses readily obtainable site-specific data such as climatic information and the temperature of the heated water. The outputs include the exit air conditions (temperature and relative humidity), the mass flow rate of the circulating heated water, and the exit water temperature. This model has been used in simulations in order to assess the economic feasibility of this method of utilizing waste heat. Council for Agricultural Science and Technology, <i>Energy Conservation in Agriculture</i>, Iowa State University, Ames, Iowa, Special Publication No. 5, October 1977 (as referenced in [2]). Tennessee Valley Authority, <i>Waste Heat Utilization for Agriculture and Aquaculture, State of the Art</i>, TVA and EPRI, EPRI EA-922, 1987. Z. Hatle and M. Lampar, Exploitation of Waste Heat, <i>Proceedings of the International Atomic Energy Conference on Environmental Effects of Cooling Systems at Nuclear Power Plants</i>, Oslo, Sweden, p. 731, August 26-30, 1974. J. H. Young and J. W. Dickens, Evaluation of Costs for Drying Grain in Batch or Cross-Flow Systems, <i>Transactions of the American Society of Agricultural Engineers, 18</i>:4, p. 734, 1975. D. W. Morrison and G. C. Shove, <i>Solar Energy-Heat Pump Low Temperature Grain Drying</i>, University of Illinois, Urbana-Campaign, Agricultural Engineering Department, ASAE Paper No. 77-3546, 1977. B. A. Stout, Energy Use in Agriculture: Now and For the Future. I. Overview, <i>Energy Conservation in Agriculture</i>, Iowa State University, Ames, Iowa, Special Publication No. 5, October 1977. J. L. Butler and J. M. Troeger, <i>Application of Solar Energy for Peanut Drying and Curing</i>, U. S. Department of Agriculture, Agricultural Research Service, ARS Paper 75-3505, 1975. T. Byrd, Unit Designed to Function as Greenhouse in Spring and Tobacco Curing Barn in Fall, <i>Research and Farming</i>, p. 5, Winter/Spring 1974. R. N. Amundsen, <i>Computer Simulation and Optimization for the Assessment of Waste Heat Utilization Technologies</i>, Dissertation, Energy Management and Policy, University of Pennsylvania, 607 pp., 1986. J. D. Keenan and R. N. Amundsen, Assessment of Waste Heat Utilization Technologies: Overview, <i>Journal of Environmental Systems, 19</i>:2, pp. 95-114, 1989. American Society of Heating, Refrigerating, and Air Conditioning Engineers, <i>ASHRAE Handbook-1982 Applications</i>, ASHRAE, New York, 1982. M. L. Haas, J. R. Barrett, and W. E. Tyner, Wheat-Drying Costs for Solar and Alternative Drying Systems, in <i>Solar Grain Drying Conference Proceedings</i>, U. S. Department of Energy, West Lafayette, Indiana, CONF-7805129, pp. 137-151, May 2-3, 1978. R. O. Pierce and T. L. Thompson, Solar Grain Drying in the North Central Region-Simulation Results, <i>Transactions of the American Society of Agricultural Engineers, 22</i>:1, pp. 178-187, 1979. G. C. Shove, Low-Temperature Drying of Shelled Corn, <i>Agricultural Engineering, 52</i>:7, pp. 372-373, 1971. A. W. Culp, Jr., <i>Principles of Energy Conversion</i>, McGraw-Hill Book Company, New York, 1979. H. V. Hukill, Grain Drying, reprinted in <i>Storage of Cereal Grains and Their Products</i>, (2nd Edition), C. M. Christensen (ed.), American Association of Cereal Chemists, Monograph II, St. Paul, Minnesota, pp. 481-508, 1974. H. J. Barre, G. R. Baughman, and M. Y. Hamdy, Application of the Logarithmic Model to Cross-Flow Deep-Bed Grain Drying, <i>Transactions of the American Society of Agricultural Engineers, 14</i>:6, pp. 1061-1064, 1971. S. M. Henderson, A Basic Concept of Equilibrium Moisture, <i>Agricultural Engineering, 33</i>:1, pp. 29-33, 1952. E. L. Thackston and F. L. Parker, Geographical Influence on Cooling Ponds, <i>Journal of the Water Pollution Control Federation, 44</i>:7, p. 1134, 1972. H. V. Hukill, Basic Principles in Drying Corn and Grain Sorghum, <i>Agricultural Engineering, 28</i>:8, pp. 335-338, 1947. K. Wark, <i>Thermodynamics</i>, (3rd Edition), McGraw-Hill Book Company, New York, 909 pp., 1977. J. Leckie, G. Masters, H. Whitehouse, and L. Young, <i>More Other Homes and Garbage: Designs for Self-Sufficient Living</i>, Sierra Club Books, San Francisco, 1981. W. F. Stoeker, <i>Design of Thermal Systems</i>, McGraw-Hill Book Company, New York, 1971.