scholarly journals Study on the dust removal and temperature reduction coupling performances of magnetized water spray

Author(s):  
Chengfeng Wang ◽  
Shouqing Lu ◽  
Mingjie Li ◽  
Yongliang Zhang ◽  
Zhanyou Sa ◽  
...  
2021 ◽  
Author(s):  
Chengfeng Wang ◽  
Shouqing Lu ◽  
Mingjie Li ◽  
Yongliang Zhang ◽  
Zhanyou Sa ◽  
...  

Abstract Dust pollution and heat damage hazards are important problems affecting underground safety production. This paper is aimed at exploring the optimal magnetization conditions of magnetized water for dust removal and temperature reduction, and improve the utilization rate of water. First, the surface tension, viscosity and specific heat capacity of water under different magnetization conditions were measured experimentally. Then, the magnetization conditions with the best coupling performances were obtained through ANSYS Fluent simulation. Finally, a spray system was designed to control the magnetization conditions strictly. The results demonstrate that the dust removal performance is better when the magnetic field intensity is 150 mT and the magnetization time is 80 s. Under this condition, the specific heat capacity also reaches the maximum. These research results can provide a theoretical basis for the selection of dust pollution and heat damage control measures in mines.


2017 ◽  
Vol 3 (6) ◽  
pp. 757-764
Author(s):  
Nur Eka Dzulfaijah ◽  
Mardiyono Mardiyono ◽  
Sarkum Sarkum ◽  
Djenta Saha

Objective:  To examine the effect of the combination of cold pack, water spray, and fan cooling on body temperature reduction and level of success to reach normal temperature in critically ill patients with hyperthermia.Methods: This was a randomized control trial (RCT) with pretest postest control group design and repeated measurement, conducted on December 2016 – January 2017. There were 32 respondents selected using total sampling, with 16 respondents randomly assigned in the experiment and control group. A digital thermometer was used to measure hyperthermia. Paired t-test, Repeated Anova with post hoc, and Mann Whitney were used for data analysis.Results: Findings showed that the mean of body temperature in the experiment group in pretest was 38.762oC and decreased to 37.3oC after given intervention for 60 minutes. The mean difference of body temperature was 1.4625, with p-value 0.000 (<0.05). In control group, the mean of body temperature in pretest was 38.669oC and decreased to 38.188oC given intervention for 60 minutes. The mean difference of body temperature was 0.4812, with p-value 0.000 (<0.05). Conclusion: There was a significant effect of the combination of cold pack, water spray, and fan cooling on body temperature reduction and level of success to reach normal temperature in critically ill patients with hyperthermia. This combination is more effective than water compress alone. 


2003 ◽  
Vol 13 (1) ◽  
pp. 27-44 ◽  
Author(s):  
Jongmook Lim ◽  
Yudaya Sivathanu ◽  
Vinoo Narayanan ◽  
Seungmin Chang
Keyword(s):  

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