Accession Number : ADA219193


Title :   Multiple-Input Transfer Function Model of Heat Transfer from Square Slab Floors


Descriptive Note : Final rept.


Corporate Author : CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL


Personal Author(s) : Amber, JoAnn


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA219193


Report Date : JAN 1990


Pagination or Media Count : 124


Abstract : Existing detailed hourly energy analysis between programs do not adequately model the heat transfer between buildings and the ground. A simple model of the ground heat transfer compatible with both existing hourly energy analysis programs and simpler building models is vital as energy conservation techniques reduce the above-ground heat loss and building-ground heat transfer becomes more significant. This study extends present techniques from the strictly geometric context of the numerical solution methods to the more conceptual environment of simplified models. Specifically, these concepts are applied to the problem of heat conduction through slab-on-grade surfaces. Tested over a broad range of climatic conditions, the multiple-input transfer function model calculates slab heat flux. The accuracy of the model is dependent upon the accuracy of the input data; however, some resonable approximations to the necessary input data can give acceptable results. The full capability of the model was not tested in this study. Further work to develop a definition of the network parameters based on characteristic length could expand the use of the model to nonsquare and possibly even nonrectangular surfaces. Keywords: Heat exchange; Heat loss.


Descriptors :   *FLOORS , *HEAT TRANSFER , *ENERGY CONSERVATION , *THERMAL CONDUCTIVITY , *HEAT LOSS , ENERGY , NUMERICAL ANALYSIS , ACCURACY , SOLUTIONS(GENERAL) , CLIMATE , GEOMETRY , NUMERICAL METHODS AND PROCEDURES , HEAT FLUX , SIMPLIFICATION , EXCHANGE , PARAMETERS , NETWORKS , MODELS , ENVIRONMENTS , GROUND LEVEL , INPUT


Subject Categories : CONSTRUCTION EQUIPMENT, MATERIALS & SUPPLIES
      THERMODYNAMICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE