Smoke dissipation by solid particles and charged water spray in enclosed spaces

Maghirang, Ronaldo G.; Razote, Edna B.

doi:10.1016/j.firesaf.2008.12.003

Cited by 11 publications

(3 citation statements)

References 6 publications

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“…It is known that smoke consists of solid particles suspended in the atmosphere. 63 When burning, materials will be rapidly carbonized at high temperature, and produce many small particles. If these particles are of low density, they will be suspended in the hot air, so the amount of smoke depends on the amount of solid particles suspended in the air.…”

Section: Flame Retardancy and Mechanismsmentioning

confidence: 99%

Unique hybridized carbon nanotubes and their high performance flame retarding composites with high smoke suppression, good toughness and low curing temperature

et al. 2014

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Section: Flame Retardancy and Mechanismsmentioning

confidence: 99%

Unique hybridized carbon nanotubes and their high performance flame retarding composites with high smoke suppression, good toughness and low curing temperature

et al. 2014

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“…(i.e., NanoActive MgO plus) was the best smoke-clearing agent. Maghirang and Razote (2009) investigated the effectiveness of various particles in clearing smoke in enclosed spaces. Three types of metal oxide nanostructured particles (NanoActive TiO 2 , NanoActive MgO, and NanoActive MgOplus), conventional particles (i.e., calcium hydroxide, sodium bicarbonate), or water (electrostatically charged or uncharged) were sprayed into an enclosed experimental chamber filled with combustion smoke.…”

Section: Introductionmentioning

confidence: 99%

Smoke Clearing Method using Activated Carbon and Natural Zeolite

Purwanto¹,

Nugroho²

2015

IJTech

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The purpose of this research is to study the effectiveness of smoke clearing with adsorbents measured in situ using the photoelectric type smoke detection system. The influence of the type, size and the mass of the adsorbents was evaluated against the smoke clearing process. Adsorbent types studied were commercial activated carbon, ZnCl 2 -activated carbon, and activated natural zeolite, with the size of 0.61.0 μm, 1.0 to 2.0 μm, 53106 μm, and 106212 μm, and the mass of 1, 3, and 5g. The smoke was generated by burning tissue paper using an electrical soldering apparatus. The adsorbent was dispersed using a pressurized nitrogen system. The results showed that in comparison with no adsorbent, the activated carbon and natural zeolite were more effective for clearing the smoke. The order of clearing effectiveness was best achieved by commercial activated carbon, ZnCl 2 -activated carbon and activated natural zeolite, respectively. Particle size of 53 micron provided the most effective performance. The more mass of adsorbent dispersed, the faster the clearing process. Clearing process at the top of the column was faster than that at the bottom. The best t 10 value obtained for the top, middle and bottom column were 4, 4.6, and 7.7 minutes, respectively. In addition, the average adsorption of carbon monoxide was less than 15%.

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“…Decker 18 and Koper 19 found that the activity of aerosol-type smoke is destroyed by metal oxide nanoparticles. Also, experimental results of Maghirang 20,21 showed that nanoparticles had a good dissipation effect on fire smoke and no secondary floating occurred.…”

mentioning

confidence: 95%

Experimental and simulation study of the interaction characteristics of nano‐MgO and smoke in the fire of a ship engine room

Wang

et al. 2021

Fire and Materials

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The engine room of ships with poor ventilation has high concentrations of accumulated smoke during the fires. In some ways, the existing forced ventilation and water mist fire extinguishing can aggravate the occurrence of back-burning and flame strengthening. In this article, a novel way to control smoke is proposed. Based on nano-MgO particles, the adsorption mechanism of MgO at different temperatures (300-500 K) was simulated and analyzed using the Monte Carlo method. And the macroscopic adsorption effects of smoke at different angles (30 , 80 , and 110 ) of nano-MgO vertical spray were studied in a closed confined space of 1.5 Â 1.5 Â 1 m 3 , where the diesel oil was used as a fire source. The results show that the nano-MgO have a good dissipation effect on the fire smoke through the analysis of the temperature, smoke concentration and adsorption amount in the confined space, which can effectively reduce the smoke concentration and improve the visibility in the space. The adsorption effect of nano-MgO is the best when the spray angle is 30 , the adsorption effect of nano-MgO is the largest when the pressure is 300 KPa and the temperature is 300 K. Besides, the adsorption of nano-MgO and carbon smoke particles changed from single-layer to multilayer adsorption in the process of interaction. The research results provide a theoretical basis for the application of nano-MgO particles in smoke control of the fire in the ship engine room.

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Smoke dissipation by solid particles and charged water spray in enclosed spaces

Cited by 11 publications

References 6 publications

Unique hybridized carbon nanotubes and their high performance flame retarding composites with high smoke suppression, good toughness and low curing temperature

Unique hybridized carbon nanotubes and their high performance flame retarding composites with high smoke suppression, good toughness and low curing temperature

Smoke Clearing Method using Activated Carbon and Natural Zeolite

Experimental and simulation study of the interaction characteristics of nano‐MgO and smoke in the fire of a ship engine room

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