scholarly journals Design and development of an automatic gas poisoning prevention and ventilation system

2018 ◽  
Vol 185 ◽  
pp. 00010
Author(s):  
Ho-Chih Cheng ◽  
Min-Chie Chiu ◽  
Che-Min Chiu ◽  
Cheng-Ying Yang
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Gas Sensors ◽  
Ventilation System ◽  
Gas Concentration ◽  
Gas Poisoning ◽  
Carbon Dioxide Sensors ◽  
Prevention System ◽  
Image Monitoring ◽  
Poisoning Prevention

As both carbon monoxide (CO) and carbon dioxide (CO2) exit during a fire, they are obvious indicators for the need to be alert to the possibility of fire. Another problem concerning poisoning by carbon monoxide (CO) is asphyxiation that occurs in houses during winter. The development of an automatic gas poisoning prevention system in conjunction with a ventilation function using carbon monoxide/carbon dioxide sensors would prove beneficial, necessary. As presented here, this system includes two gas sensors, an alarm, a ventilation device, a motor, and a rain-protection louver. The louver is manipulated by a motor. Two thresholds of gas concentration are preset inside the microcontroller via a PC. The louver is opened by the motor as the first threshold of gas is reached. Additionally, an alarm system is triggered and the ventilation fan starts up if the second threshold of gas concentration is reached. Consequently, image-monitoring via the PC is established using an IPCAM.

scholarly journals Kualitas Udara Selama Perjalanan di Kapal Motor Camara Nusantara 3

2020 ◽  
Vol 8 (2) ◽  
pp. 61-66
Author(s):  
D. Talithania ◽  
Salundik ◽  
A. Yani
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Concentration Level ◽  
Ventilation System ◽  
Threshold Value ◽  
Normal Range ◽  
Gas Concentration ◽  
Mode Of Transportation ◽  
Methane Carbon

The Camara Nusantara Ship is a mode of transportation used for transporting cattle to various islands. The journey from Kupang, East Nusa Tenggara to Jakarta took five days. The gases that produced during the trip on the ship were ammonia, methane, carbon dioxide, and carbon monoxide. This aim of research to analysis the air quality of each deck on the ship during transportation and inform the threshold of gas concentration as well as strategies to improve air quality for livestock on the Camara Nusantara Ship. Measurements were taken three times: morning (8 am), noon (12 pm) and afternoon (4 pm). Observation of the gas concentration level was carried out for 10 - 15 minutes. The study was conducted observation, and data analysis was done descriptively. The results showed that the level of gas concentration still in the normal range and below the threshold value and the microclimate on the deck still in the normal range. Another factor that influence air quality were still in the safe category, namely wind speed. Strategies that can be applied to anticipate the decline in air quality by improving the ventilation system on the ship by focusing more on the engine airflow on the vessel.

Study of Carbon Monoxide Intoxication in Fire Victimis

2018 ◽  
Vol 68 (12) ◽  
pp. 2932-2935
Author(s):  
Sofia David ◽  
Anton Knieling ◽  
Calin Scripcaru ◽  
Madalina Diac ◽  
Ion Sandu ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Carbon Monoxide Poisoning ◽  
Inverse Correlation ◽  
Blood Samples ◽  
Mortality And Morbidity ◽  
Carbon Monoxide Intoxication ◽  
Gas Poisoning ◽  
The World ◽  
Fire Victims ◽  
In Fire

Carbon monoxide poisoning is the leading cause of mortality and morbidity of toxic origin in the world. Its insidious and polymorphic symptomatology makes it difficult to diagnose. It occurs accidentally, because of non-supervised domestic fires, or in fire victims. In fire victims, in particular, the differential diagnosis between carbon monoxide gas poisoning, inhalation of other toxic products of combustion like cyanide, oxygen deprivation, thermal burns and shock due to burns as a cause of death is not an easy task. The authors examined 107 fire victims that were autopsied at the Forensic Medicine from Iasi, Romania, in the last 10 years (2007-2016). Most cases were males (69.16%), young (0-9 years) or older than 60 with a burned surface of 91-100% in 68.22% of cases. Blood samples from the cadavers were collected in all cases in order to analyse carboxyhaemoglobin concentration and haemolysis. Toxicological analysis revealed a carboxyhaemoglobin level of maximum 95% but the majority of cases (70.72%) had a concentration inferior to 50%. An inverse correlation was identified between carboxyhaemoglobin concentration and haemolysis, an indicator of heat dissociation. Our study proves that many fire victims may die because of carbon monoxide intoxication prior to the extent of burns at a lethal potential.

The Effect of Humidity on the Readings of Carbon Dioxide Sensors

2020 ◽  
Author(s):  
Anton V. Yupashevsky ◽  
Anna S. Kazmina ◽  
Konstantin A. Metsler ◽  
Gleb V. Shevchenko ◽  
Nikita A. Glubokov
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Sensors

scholarly journals Controlled atmosphere GMAW welding of transportation vehicles and production machines parts made from 30MnB5 steel

2018 ◽  
Vol 216 ◽  
pp. 03001 ◽  
Author(s):  
Evgeny Ivanayskiy ◽  
Aleksei Ishkov ◽  
Aleksandr Ivanayskiy ◽  
Iakov Ochakovskii
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Chemical Composition ◽  
Controlled Atmosphere ◽  
Shielding Gas ◽  
Reducing Atmosphere ◽  
Metal Composition ◽  
Gmaw Welding ◽  
Welding Materials

The paper studies the influence of shielding gas on the composition and the structure of weld joint metal of 30MnB5 steel applied in essential parts of automobiles and tractors. The welding was performed in inert, oxidizing and reducing atmospheres. It was established that TIG welding with argon used as shielding gas did not provide the required mechanical properties when using conventional welding materials. Carbon dioxide during MAG welding caused partial burning of alloying elements. Carbon monoxide used as shielding gas was proved to form reducing atmosphere enabling to obtain chemical composition close to the base metal composition. Metallographic examinations were carried out. The obtained results provided full-strength weld, as well as the required reliability and durability of welded components and joints.

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