Convective heat transfer at internal surfaces

Delaforce, S.R.; Hitchin, E.R.; Watson, David

doi:10.1016/0360-1323(93)90054-7

Cited by 24 publications

(9 citation statements)

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“…The conductive heat flow through the different surfaces can be measured/calculated in different ways. The air temperature gradient in the boundary layer can be measured by a Mayer ladder [126,134], or heat flux sensors can be used [32,35,135], or thermocouples can be integrated to the construction to estimate the conductive flux knowing the thermal properties of materials [121,123,126,129]. This technique results in a more realistic conductive flow at the surfaces, but the accuracy of the method is limited by the number of measuring points.…”

Section: Deriving Chtcs From Experimentsmentioning

confidence: 99%

Energy Flow and Thermal Comfort in Buildings

Dréau

2014

Energy Flow and Thermal Comfort in Buildings

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Section: Deriving Chtcs From Experimentsmentioning

confidence: 99%

Energy Flow and Thermal Comfort in Buildings

Dréau

2014

Energy Flow and Thermal Comfort in Buildings

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“…The interior exchange factors are the basis of many publications ( [25][26][27]), as they finally assert the physical link between the interior walls of the envelope of the building and the vector of the principal exits (for the building heat engineer ), the dry interior air temperatures (or the air conditioning sensitive power). By means of experimental correlations, non linear relationships link the value of the exchange factors and the temperature gap between the air and the surface of the walls.…”

Section:  Indoor Convectionmentioning

confidence: 99%

A multimodel approach to building thermal simulation for design and research purposes

Boyer

Garde

Gatina

et al. 1998

Energy and Buildings

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The designers pre-occupation to reduce energy consumption and to achieve better thermal ambience levels, has favoured the setting up of numerous building thermal dynamic simulation programs. The progress in the modelling of phenomenas and its transfer into the professional field has resulted in various numerical approaches ranging from softwares dedicated to architects for design use to tools for laboratory use by the expert thermal researcher. This analysis shows that each approach tends to fulfil the specific needs of a certain kind of manipulator only, in the building conception process. Our objective is notably different as it is a tool which can be used from the very initial stage of a construction project, to the energy audit for the existing building. In each of these cases, the objective results, the precision advocated and the time delay of the results are different parameters which call for a multiple model approach of the building system

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“…Figures 5 and 6 show the estimated linear response function for the first input channel, hyx 1 (t), and the differences between the estimated and known response function values for this channel, (hyx 1 (t)-9yx 1 (t)). The differences of 10- 7 show the differences between the estimated and known response functions for these channels. Table 1 presents the area under the estimated and known response functions, and the root mean square and absolute mean differences between the estimated and known response functions, given by equations (4) and (5).…”

Section: Numerical Experiments Using Computer Generated Datamentioning

confidence: 99%

“…Internal measurements were obtained for various air and surface temperatures, and for the heat flux at each surface. In order to estimate the surface heat transfer coefficient, a Meyer ladder [7] was employed, this measures the air temperature through the boundary layer, from the surface to which it is attached to the bulk air. A ladder consists of a set of air temperature sensors (in this case ten) at accurately defined distances from the surface, a free stream air temperature sensor, and a surface temperature sensor.…”

Section: Experimental Datamentioning

confidence: 99%