Heat transfer characteristics of straw-core paper honeycomb plates (beetle elytron plates) I: Experimental study on horizontal placement with hot-above and cold-below conditions

Chen, Jinxiang; Guo, Zhang; Du, Shengchen; Song, Yiheng; Ren, Hao; Fu, Yaqin

doi:10.1016/j.applthermaleng.2021.117095

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…Equation (22) shows that the honeycomb edge length mainly affected the theoretical result by influencing the ratio α between the height of the honeycomb core and the diameter of its inner tangent circle. From the derivation of the net radiation heat transfer, the honeycomb edge length mainly affected the weight of radiation heat transfer [ 22 ], which made that of LHP 16 much greater than that of LHP 8 . The second factor was the effect of the single-layer honeycomb thickness.…”

Section: Resultsmentioning

confidence: 99%

“…The hot and cold plate temperatures were set to 40 °C and 25 °C, respectively. The values were determined considering the physical comfort and summer indoor average temperature in the central and southern regions with higher populations in China, as well as to better compare with previous data [ 22 , 23 ]. The sample was sandwiched between the two heat flow sensors.…”

Section: Materials and Methodologymentioning

confidence: 99%

“…It has been proven that BEPs have better mechanical properties than HPs in terms of compression [ 19 ], bending [ 20 ], and shear [ 21 ]. In previous papers [ 22 , 23 , 24 , 25 ], the thermal insulation performance of BEPs was also investigated. In view of the difficulty and cost of BEP preparation, the HP was regarded as the simplest BEP (the column diameter in Figure 1 d is 0), and it was taken as the research object in the study for the heat transfer performance of BEPs.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Heat Transfer Performance of Laminated Paper Honeycomb Panels

Yang

Chen

et al. 2023

Biomimetics

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To apply functional honeycomb panels (FHPs) in actual engineering projects, the heat transfer performance and intrinsic heat transfer mechanism of laminated honeycomb panels (LHPs, total thickness of 60 mm) with different structural parameters were investigated in this study by a heat flow meter. The results showed that (1) the equivalent thermal conductivity λequ of the LHP was almost independent of the cell size, when it consisted of a small single-layer thickness. Thus, LHP panels with a single-layer thickness of 15–20 mm are recommended. (2) A heat transfer model of LHPs was developed, and it was concluded that the heat transfer performance of LHPs depends greatly on the performance of their honeycomb core. Then, an equation was derived for the steady state temperature distribution of the honeycomb core. (3) The contribution of each heat transfer method to the total heat flux of the LHP was calculated using the theoretical equation. According to the theoretical results, the intrinsic heat transfer mechanism affecting the heat transfer performance of LHPs was revealed. The results of this study laid the foundation for the application of LHPs in building envelopes.

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Section: Resultsmentioning

confidence: 99%

Section: Materials and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of the Heat Transfer Performance of Laminated Paper Honeycomb Panels

Yang

Chen

et al. 2023

Biomimetics

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“…Therefore, these two kinds of BEPs represent new bionic sandwich structures with better mechanical properties than honeycomb plates. Recently, our research group proposed a new energy-saving BEP filled with straw 12 and showed that it basically meets the requirements of self-thermal insulation. 13 However, the compressive mechanical properties of foam-filling BEPs have not been studied before.…”

Section: Introductionmentioning

confidence: 99%

The compressive mechanical properties of honeycomb plates and beetle elytron plates with different foam densities and height-to-thickness ratios

Chen

Hao

et al. 2022

Jnl of Sandwich Structures & Materials

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To investigate a new type of bionic energy-saving sandwich plate—the beetle elytron plate (BEP), the compressive mechanical properties of short basalt fiber reinforced epoxy resin composite BEPs and honeycomb plates with different polyvinyl chloride foam densities and height-to-thickness ratios were investigated. The mechanism of the coupling effect of the core structure, foam density and height-to-thickness ratio was revealed by observing the failure mode of the outer and inner ring honeycomb walls. This study can provide useful instruction for designing lightweight sandwich structures and accelerate the application of BEPs in engineering.

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Straw characteristics and mechanical straw building materials: a review

Zhu

Chen

2023

J Mater Sci

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Heat transfer characteristics of straw-core paper honeycomb plates (beetle elytron plates) I: Experimental study on horizontal placement with hot-above and cold-below conditions

Cited by 5 publications

References 17 publications

Study of the Heat Transfer Performance of Laminated Paper Honeycomb Panels

Study of the Heat Transfer Performance of Laminated Paper Honeycomb Panels

The compressive mechanical properties of honeycomb plates and beetle elytron plates with different foam densities and height-to-thickness ratios

Straw characteristics and mechanical straw building materials: a review

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