Please use this identifier to cite or link to this item:
Title: A simplified analytical model to evaluate the impact of radiant heat on building cooling load
Authors: Yan, C
Wang, S 
Shan, K
Lu, Y
Keywords: Air-to-air conduction
Analytical model
Cooling load calculation method
Quantitative evaluation
Radiant heat transfer
Issue Date: 2014
Publisher: Pergamon Press
Source: Applied thermal engineering, 2014, v. 77, p. 30-41 How to cite?
Journal: Applied thermal engineering 
Abstract: In some building cooling load calculation methods, the conductive heat gain is calculated using the "air-to-air" conduction method in which the effect of radiative heat on the outer surface of external envelopes has been considered (e.g., using the sol-air temperature). However, the effect of the radiative heat on the inner surface is ignored, which results in uncertainty of conductive heat gain calculation and may bring significant errors in cooling load calculation under some particular conditions. This paper presents a simple method to consider the radiative heat on the inner surface of external envelopes for improving the accuracy of the "air-to-air" conduction method. A simplified analytical model is developed for evaluating the impact of inner radiant heat effect on cooling load. Five case studies are conducted in EnergyPlus to validate the model and to assess the radiative heat impact under different conditions. An illustrative example is presented to demonstrate the procedures of using the developed method to evaluate the inner radiation effect in a real building in Hong Kong. It is found that the most important factors determining the inner radiation effect are the radiative heat conditions and the building zoning configurations, and oversimplifying the zoning configuration might result in errors of up to 10% in cooling load calculations.
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2014.12.017
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Aug 9, 2018

Page view(s)

Last Week
Last month
Citations as of Aug 12, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.