Energy conservation in grain (corn) drying with combination high-temperature, low-temperature methods. Final report, July 1, 1978-December 31, 1979

Technical Report · Sat Mar 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5381992· OSTI ID:5381992

Morey, R. Vance; Gustafson, Robert J.; Cloud, Harold A.; Walter, Kenneth L.

The need to conserve energy has led to efforts to improve efficiency of grain drying systems. Combination high-temperature, low-temperature drying offers potential for meeting this need. Combination drying is any system in which high-temperature drying is followed by in-storage cooling and low-temperature drying. The high-temperature (120 to 240/sup 0/F) phase can be a continuous flow or automatic batch dryer, or a bin dryer using elevated air temperatures (continuous flow; unstirred, stirred or recirculated batch. The purpose of the high-temperature dryer is to reduce the corn moisture content to a level where drying can be safely completed with in-storage, low-temperature methods. In-storage drying is accomplished by moving low-temperature air through the grain mass. This process may take from four to eight weeks, or longer, to complete. In fact, drying may be halted in late fall and completed during the following spring. Potential advantages of the combination approach compared to conventional drying with in-drying cooling include: reduced energy requirements, increased drying capacity, and improved grain quality. Combination drying studies from four corn harvest seasons (1975 to 1978) at the University of Minnesota Rosemount Experiment Station, and results of simulation analysis of the low-tempeature phase of combination drying are presented. The model used for this analysis was validated with experimental data from the field studies. Finally, design and management recommendations, and economic considerations for combination drying are discussed. (LCL)

• Research Organization: Minnesota Univ., Rosemount (United States). Rosemount Agricultural Experiment Station; Minnesota Univ., St. Paul (United States). Dept. of Agricultural Engineering
• Sponsoring Organization: USDOE
• DOE Contract Number: AS02-78CS40060
• OSTI ID: 5381992
• Report Number(s): DOE/CS/40060-1
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DRYERS
FUEL CONSUMPTION
OPERATION
DRYING
ENERGY CONSERVATION
FOOD PROCESSING
MAIZE
ECONOMICS
EXPERIMENTAL DATA
MATHEMATICAL MODELS
MINNESOTA
PERFORMANCE
RESEARCH PROGRAMS
THEORETICAL DATA
CEREALS
DATA
ENERGY CONSUMPTION
GRAMINEAE
GRASS
GREAT LAKES REGION
INFORMATION
NORTH AMERICA
NUMERICAL DATA
PLANTS
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320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes