Burning behavior of cable tray located on a wall with different cable arrangements

Huang, Xianjia; He, Zhu; Peng, Lan; Zheng, Zihui; Zeng, Wuyong; Bi, Ke; Cheng, C.S. Agnes; Chow, Wan Ki

doi:10.1002/fam.2669

Cited by 25 publications

(15 citation statements)

References 9 publications

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“…Figure 1 shows schematic for the experimental setup for the cable fire experiments. 14 The cable tray fire experiment was performed inside a 5 m (width) × 6 m (length) × 4 m (height) compartment with the door closed. However, there was sufficient leakage due to the low tightness of door to prevent rise of the room pressure.…”

Section: Methodsmentioning

confidence: 99%

“…Twenty-six cables were placed in each layer on the cable tray for each test. 14 The total mass of cables on the tray was approximately 46.1 kg. The outer layer jacket material and the inner insulation material were composed of polyvinyl chloride (PVC).…”

Section: Methodsmentioning

confidence: 99%

“…The increase of the heat flux from the cone calorimeter increased the peak heat release rate per unit area (HRRPUA) and decreased the difference between ignition time and the time required to reach the first peak of the heat release rate. Huang et al 14 investigated the effect of cable arrangement on the burning behavior of cable tray located on a sidewall. The burning pattern of a cable tray fire was changed with different cable arrangement.…”

Section: Introductionmentioning

confidence: 99%

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Compartment temperature estimation of a multiple-layer cable tray fire with different cable arrangements in a closed compartment

Huang

Wang

Zeng

et al. 2019

Journal of Fire Sciences

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Fire hazard analysis of multiple-layer cable tray is an important part of nuclear safety analysis. Large-scale cable fire experiments with a three-layer horizontal cable tray were conducted in a closed compartment. The vertical temperature profile in the middle of the room was acquired. Distinctive stratification phenomena were found in the vertical temperature distribution. The interface between the upper and lower layer was located at approximately the height of the top cable layer. Heat transfer between the smoke and compartment walls occurred mainly above the smoke interface. A modified non-steady energy balance model in a closed compartment which included the effect of smoke interface height was used to estimate the compartment temperatures. Compared with the experimental results, the modified model for the multiple-layer cable tray fire in a closed compartment provides better estimation than the original model.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compartment temperature estimation of a multiple-layer cable tray fire with different cable arrangements in a closed compartment

Huang

Wang

Zeng

et al. 2019

Journal of Fire Sciences

Self Cite

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“…12 Many of the previous studies on cable and wire fires focused on their failure, ignition mechanism, and burning behaviors under the condition of external heating. [13][14][15][16][17] They are important for flame spread analyses of cables and fire fighting guide. On the contrary, some researchers had also studied the critical temperature on the surface of power cable, which is the key parameter for early warning.…”

Section: Introductionmentioning

confidence: 99%

Heat blockage of air gap for inner overheating of high-voltage power cable and delay of early detection

Xie

Chen

2020

Journal of Fire Sciences

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Early detection for inner overheating of high-voltage cable is important for safe power supply. A new radial heat transfer model is developed for a typical 110 kV cable with an air gap layer. Numerical analyses are conducted for dynamic temperature field in cable induced by hot copper core with different thicknesses of air gap. The results show that the air gap has an important heat blockage for the outward heat transfer in cable. The air gap causes the temperature inside the overheated cable to rise faster and the temperature outside slower. The air gap not only reduces the response sensitivity of the surface temperature on inner overheating but also induces the inner layers to heat up and even break down. Finally, the non-dimensional temperatures on cable surface indicate that the detection of inner overheating cable would be delayed if the air gap is not considered in calculation models.

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“…The arrangement influence of the cables on the fire characteristics was investigated by e.g. Huang et al [5]. The influence of other factors on fire characteristics and the spread of flame on the surface of electrical cables were investigated in scientific work of Zavaleta et al [6] and Sarazin et al [7].…”

Section: Introductionmentioning

confidence: 99%

Impact of Selected Electrical Cables Slope on Flame Out Time and Flame Spread

Nečas

Martinka

Wachter

et al. 2019

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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The aim of the research described in this paper was to study the impact of the electrical cables slope on the flame out time and the flame spread rate. Measured cables were thermally loaded by methanol flame (diameter of the container was 106 mm) at seven different slopes with respect to the horizontal plane (the slopes were 0° – horizontal orientation, 15°, 30°, 45°, 60°, 75° and 90° - vertical orientation). The first tested electrical cable was a copper three-core power one resistant to the flame spread with circuit integrity of the cable system during 30 minutes under fire (cross-section of each core was 1.5 mm2). The second tested electrical cable was a copper two-core signal one resistant to the flame spread with circuit integrity of the cable system during 30 minutes under fire (cross-section of each core was 0.5 mm2). The first electrical cable did not show reaction to fire class. The reaction to fire class of the second tested cable was B2ca, s1, d1, a1. The obtained results proved that slope had virtually no impact on the flame out time and the flame spread over the tested cable surface (tested cables of all slopes stopped burning after 1 to 5 seconds after methanol flame burned out). Likewise, the flame spread was only negligibly beyond the border of flame action for each cable slope.

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Burning behavior of cable tray located on a wall with different cable arrangements

Cited by 25 publications

References 9 publications

Compartment temperature estimation of a multiple-layer cable tray fire with different cable arrangements in a closed compartment

Compartment temperature estimation of a multiple-layer cable tray fire with different cable arrangements in a closed compartment

Heat blockage of air gap for inner overheating of high-voltage power cable and delay of early detection

Impact of Selected Electrical Cables Slope on Flame Out Time and Flame Spread

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