Radiation exchange between persons and surfaces for building energy simulations

Vorre, Mette Havgaard; Jensen, Rasmus Lund; Dréau, Jérôme Le

doi:10.1016/j.enbuild.2015.05.005

Cited by 40 publications

(14 citation statements)

References 9 publications

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“…where 𝑇 𝑟,𝑜𝑟𝑡 is the MRT l calculated using images in the orthographic projection [°C], 𝑤 𝑗 is the weighting factor for the 𝑗th direction (projected area factor) [-], and 𝑇 𝑝,𝑗 is the PRT l for the 𝑗th direction [°C]. The weighting factors depend on the person's posture [19,[34][35][36].…”

Section: Calculation Of Mrt Lmentioning

confidence: 99%

Portable recording system for spherical thermography and its application to longwave mean radiant temperature estimation

Asawa

Oshio

Tanaka

2022

Building and Environment

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Section: Calculation Of Mrt Lmentioning

confidence: 99%

Portable recording system for spherical thermography and its application to longwave mean radiant temperature estimation

Asawa

Oshio

Tanaka

2022

Building and Environment

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“…Microclimate parameters are determined both by numerical modeling [1,2,3] and experimentally [4]. At the same time, among the parameters of the microclimate, an important place is given to the room radiation temperature and the local asymmetry of the radiation temperature [5][6][7][8][9][10]. In addition, the room radiation microclimate is fairly linked to the heating or cooling systems of the room [11 -20].…”

Section: Introductionmentioning

confidence: 99%

Checking the parameters of the internal environment by calculated simulation of measurements with a ball thermometer

Malyavina

Landyrev²

2023

E3S Web of Conf.

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According to the regulatory documents in force in the Russian Federation, the measurement of the normalized indoor environment indicators should be carried out with a ball thermometer. These norms also apply to the premises of the transport infrastructure buildings. In this paper, the values of the radiation temperature tr and the local asymmetry of the radiation temperature dtr as to the ball thermometer have been estimated by calculation. An ordinary room of an intermediate floor with a window in the outer wall with a width of 3.8 m and a height of 1.8 m, the bottom of which is located at a height of 1 m from the floor, in Belgorod, has been subject to consideration. The room is provided by an air heating. The values of the asymmetry of the radiation temperature at the boundary of the serviced area of the room, that is, at a distance of 0.5 m from the outer wall, at a height of 1.7 m and 1.1 m from the floor in the calculated winter conditions exceed the optimal ranges limited by norms. It is shown that with an increase in the resulting room temperature, the values of the radiation temperature asymmetry also increase. The presented distributions of the radiation temperature over the volume of the room indicate that in the calculated winter conditions, the optimal requirements for tr values are not met at the same heights of 1.7 m and 1.1 m from the floor. Acceptable conditions meet the requirements of the norms.

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“…In the radiative heat exchange the view factors between the fire front and the fireman should be evaluated. The view factors, among others works, can be analysed in (Jiang et al, 2017), (Vorre, Jensen and Le Dréau, 2015) and (Lai, Maing and Ng, 2017).…”

Section: Introductionmentioning

confidence: 99%

Design and Radiative heat transfer in a fireman in wildfire environment

Conceição¹,

Gomes²,

Lúcio³

et al. 2022

Advances in Forest Fire Research 2022

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This work presents the heat and mass exchanges in a fireman subjected to forest fire. A fireman thermal response systems is made. The human body model is divided into 35 elements. Each element is subdivided into several layers, constituted by fat, muscle, core and skin, and can be shielded from the outside environment by several clothing layers. In both systems, special attention is required with conduction, convection, evaporation and radiation. There are also considered the heat exchanges by radiation between the fire front and both bodies. A vertical fire front, with 2 m of height and 20 m of length, was considered. The air temperature, air velocity, air relative humidity and mean radiant temperature are used. The results of the flame mean radiant temperature, temperature of the bodies surfaces and view factors are obtained. The fireman has a skin surface temperature controlled by the human thermoregulatory and clothing systems.

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Radiation exchange between persons and surfaces for building energy simulations

Cited by 40 publications

References 9 publications

Portable recording system for spherical thermography and its application to longwave mean radiant temperature estimation

Portable recording system for spherical thermography and its application to longwave mean radiant temperature estimation

Checking the parameters of the internal environment by calculated simulation of measurements with a ball thermometer

Design and Radiative heat transfer in a fireman in wildfire environment

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