Accession Number : ADA289541

Title :   Thermal Analysis and Development of Ration Packaging for Efficient Heating with Flameless Electrochemical Heaters.

Descriptive Note : Final rept. Mar 91-Apr 92,

Corporate Author : ROCHESTER UNIV NY DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Kandlikar, S. G. ; Robertson, W. R. ; Sundarraj, V. ; Pickard, D. ; Kim, I. Y.

PDF Url : ADA289541

Report Date : DEC 1994

Pagination or Media Count : 131

Abstract : The investigation has been conducted to study the transient thermal performance of food-packages containing integral exothermic chemical heaters using Finite Element Analysis (FEA). The work was divided in two parts. The first part deals with the Meals Ready to Eat (MRE) packages, and the second part deals with the Self Heating Individual Meal Module (SHIMM). The MRE study was focused on developing tools to model the thermal characteristics of the heater and the MRE entree. Experiments were performed to obtain temperature profiles in the self heating ration packages under field like conditions. The FEA indicated that distributing the steam uniformly over the entire top surface of the package resulted inthe latent heat of vaporization ofthe steam being transferred to the food rapidly. By exploiting the condensation mechanism, the mass of the heater could be decreased by up to 50%. In the study on the SHIMM, a three dimensional thermal transient analysis was conducted. A number of experiments were also conducted on plain and modified heater geometries for the SHIMM. The FEA predictions agreed well with the experimental results.

Descriptors :   *ELECTROCHEMISTRY, *MEALS, *PACKAGING, *HEATERS, MATHEMATICAL MODELS, ARMY RESEARCH, PERFORMANCE(ENGINEERING), PHYSICAL PROPERTIES, FINITE ELEMENT ANALYSIS, EFFICIENCY, THERMAL ANALYSIS, LATENT HEAT, DATA ACQUISITION, COMPUTER GATEWAYS, STEAM, RATIONS, THERMOCOUPLES, EXOTHERMIC REACTIONS, ADIABATIC CONDITIONS, REFRIGERANTS, CONDENSATION, HEAT OF VAPORIZATION, FOOD PROCESSING.

Subject Categories : Food, Food Service and Nutrition
      Air Condition, Heating, Lighting & Ventilating
      Containers and Packaging
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE