Experimental natural convection on vertical surfaces for building integrated photovoltaic (BIPV) applications

Fossa, Marco; Ménézo, Christophe; Leonardi, E.

doi:10.1016/j.expthermflusci.2007.11.004

Cited by 117 publications

(55 citation statements)

References 24 publications

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“…It means that, for a fixed Ra, Vliet & Liu [10], and Fossa et al [26] have underestimated Nu and have predicted smaller values. While McAdams [7] and Sparrow & Gregg [9] have overestimated Nu and have predicted bigger values for Nu relative to the predicted Nu from the two correlations proposed in this paper.…”

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

“…Experimental results from the heater-apparatus are used to plot It is noted that, both empirical correlations from the probe and the embedded thermocouple on heater are within the range covered with McAdams [7], Sparrow & Gregg [9], Vliet & Liu [10] and Fossa et al [26]. It means that, for a fixed Ra, Vliet & Liu [10], and Fossa et al [26] have underestimated Nu and have predicted smaller values.…”

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

“…The characteristics of natural convection in open enclosures similar to actual building façades have been studied. For this reason, several configurations with different boundary conditions are investigated [16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Design Of a Mobile Probe To Predict Convection Heat Transfermentioning

confidence: 99%

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Design of a Mobile Probe to Predict Convection Heat Transfer on BIPV (Building Integrated Photovoltaic) at UTS (University of Technology Sydney)

Madadnia¹

2015

JEPE

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Abstract:In the absence of a simple technique to predict convection heat transfer on BIPV (building integrated photovoltaic) surfaces, a mobile probe with two thermocouples was designed. Thermal boundary layers on vertical flat surfaces of a PV (photovoltaic) and a metallic plate were traversed. The plate consisted of twelve heaters where heat flux and surface temperature were controlled and measured. Uniform heat flux condition was developed on the heaters to closely simulate non-uniform temperature distribution on vertical PV modules. The two thermocouples on the probe measured local air temperature and contact temperature with the wall surface. Experimental results were presented in the forms of local Nusselt numbers versus Rayleigh numbers "Nu = a· (Ra) b ", and surfaceThe constant values for "a", "b", "c" and "d" were determined from the best curve-fitting to the power-law relation. The convection heat transfer predictions from the empirical correlations were found to be in consistent with those predictions made by a number of correlations published in the open literature. A simple technique is then proposed to employ two experimental data from the probe to refine empirical correlations as the operational conditions change. A flexible technique to update correlations is of prime significance requirement in thermal design and operation of BIPV modules. The work is in progress to further extend the correlation to predict the combined radiation and convection on inclined PVs and channels.

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Section: Experimental Procedures and Resultsmentioning

confidence: 99%

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

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Design of a Mobile Probe to Predict Convection Heat Transfer on BIPV (Building Integrated Photovoltaic) at UTS (University of Technology Sydney)

Madadnia¹

2015

JEPE

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“…This phenomenon of differentially heated/cooled cavities has been studied extensively in the literature [2][3][4][5][6][7][8][9][10][11][12][13]. On the other hand, some double skin facade applications have been designed considering open cavity natural convection [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…However, it was found that partially closing both solar shades provided more air ventilation in the DSF and a lower g value. Fossa et al [15] carried out an experimental study on natural convection in an open channel to investigate the effect of the geometric configuration of electrical heat sources on one side of the cavity. They found the local and average Nusselt numbers using experimental data and generated a correlation with the Rayleigh numbers.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of natural convection in a double skin facade

İnan

Başaran

Ezan

2016

Applied Thermal Engineering

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In this study, airflow and heat transfer in a rectangular cavity that simulates a double skin facade and includes natural convection were examined numerically and experimentally. This cavity separates the exterior space and the thermally controlled interior space. The temperatures of the surfaces that interact with these spaces were determined experimentally, while the other surfaces were regarded as adiabatic. With these temperature values, the parameters of the numerical study were defined. After the validation of the numerical model was completed based on experimental studies in the literature, the results related to flow and heat transfer in the cavity were analyzed. The numerical model provided results that agree with the air temperature values found experimentally in the cavity. Accordingly, in natural convection, with Rayleigh numbers ranging from 8.59 ∗ 109 to 1.41 ∗ 1010 and the effect of buoyancy on the regions close to the surface, the increasing tendency of the average Nusselt number from 142.6 to 168.8 was shown. In addition, a correlation between the Rayleigh and Nusselt numbers for a cavity aspect ratio of 8.64 was constructed to evaluate the heat flux; this correlation was also shown graphically.Scientific and Technological Research Council of Turkey (112M170

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Photovoltaics literature survey (No. 63)

Shalav

2008

Progress in Photovoltaics

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Experimental natural convection on vertical surfaces for building integrated photovoltaic (BIPV) applications

Cited by 117 publications

References 24 publications

Design of a Mobile Probe to Predict Convection Heat Transfer on BIPV (Building Integrated Photovoltaic) at UTS (University of Technology Sydney)

Design of a Mobile Probe to Predict Convection Heat Transfer on BIPV (Building Integrated Photovoltaic) at UTS (University of Technology Sydney)

Experimental and numerical investigation of natural convection in a double skin facade

Photovoltaics literature survey (No. 63)

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