Differents Methods to Estimate the Mean Radiant Temperature in an Urban Canyon

Author:

de Lieto Vollaro R.1,Vallati A.2,Bottillo S.1

Affiliation:

1. University of “Roma Tre”

2. University “Sapienza” of Rome

Abstract

The mean radiant temperature is one of the meteorological key parameters governing human energy balance and the thermal comfort of human body. This variable can be considered as the sum of all direct and reflected radiation fluxes to which the human body is exposed. After the basics of the Tmrt calculation a comparison between two methods suitable for obtaining Tmrt in a street canyon will be presented. One of the discussed methods of obtaining Tmrt is based on the utilization of a globe thermometer. The other method is the radiation environment simulation through three PC software (RayMan, ENVI-met and SOLWEIG).

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference5 articles.

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2. P. Höppe: A new procedure to determine the mean radiant temperature outdoors, Wetter Leben 44: 147–151 (1992).

3. A. Matzarakis, F. Rutz, H. Mayer: Estimation and calculation of the mean radiant temperature within urban structures, ICBICUC'99, Sydney, WCASP-50, WMO/TD No 1026, 273–278 (2000).

4. A. Matzarakis, F. Rutz, H. Mayer: Modelling radiation fluxes in simple and complex environments – application of the RayMan model, Int J Biometeorol 51: 323–334 (2007).

5. M. Bruse: Die Auswirkungen kleinskaliger Umweltgestaltung auf das Mikroklima-Entwicklung des prognostischen numerischen Modells ENVI-met zur Simulation der Wind-, Tempertaur-, und Feuchteverteilung in städtischen Struckturen, PhD Thesis, University Bochum, Germany (1999).

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