A realistic radiative heat transfer model for building energy simulation programs

W. C. Tarn, W. W. Yuen, Wan Ki Chow

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

A neural network based model for interior longwave radiative heat transfer has been developed and implemented into a new computer code, BERHT (Building Energy with Radiative Heat Transfer). The model accounts for the non-gray effect of absorping species (CO2, H2O, and small particulates) in a building environment and the geometric effect of a three-dimensional building structure. Two numerical studies have been carried out on a 60m2rectangular single story building. Numerical data are generated. For nominal concentration of CO2, H2O, and small particulates, results show that the presence of an absorbing/emitting medium has important effects on the distribution of the total heat transfer between convection and radiation. The presence of a participating medium, however, has only a minimal effect on the overall heat transfer and the temperature of the encloused air. It is shown that the overall energy balance is strongly influenced by external parameters. The "greenhouse" effect is simulated numerically. Results confirm that the absorption of short-wave radiation by surfaces and the subsequent heat transfer from the surfaces to the air mixture in the room is the primary mechanism for the greenhouse effect.
Original languageEnglish
Title of host publicationAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102813
Publication statusPublished - 1 Jan 2014
EventAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2014 - Atlanta, GA, United States
Duration: 16 Jun 201420 Jun 2014

Conference

ConferenceAIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2014
Country/TerritoryUnited States
CityAtlanta, GA
Period16/06/1420/06/14

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering

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