scholarly journals Design of Smart Dust Sensor Node for Combustible Gas Leakage Monitoring

2015 ◽  
Author(s):  
Denis Spiryakin ◽  
Alexander Baranov ◽  
Vladimir Sleptsov
Keyword(s):  
Sensor Node ◽  
Gas Leakage ◽  
Combustible Gas ◽  
Smart Dust ◽  
Leakage Monitoring

scholarly journals Ignition source localization in gaseous mixtures explosions expertise

2020 ◽  
Vol 305 ◽  
pp. 00035
Author(s):  
Nicolae Ioan Vlasin ◽  
Gheorghe-Daniel Florea
Keyword(s):  
Technical Expertise ◽  
Geometric Complexity ◽  
Computational Simulations ◽  
Gas Explosion ◽  
Fuel Gas ◽  
Gaseous Mixtures ◽  
Gas Leakage ◽  
Gas Source ◽  
Combustible Gas ◽  
Areas Of Interest

Gas-explosion events in the private or industrial field are usually followed by a technical analysis of the factors that led to their generation. In this respect, INCD INSEMEX Petroşani is accredited for conducting the technical expertise and for the elaboration of the Expertise Report. Starting with on-site findings and sampling, research continues at INCD INSEMEX laboratories, grouped on areas of interest in case management (electrical, ventilation, chemical, pyrotechnics, etc.). Determining the causes of the event implicitly involves establishing the probable source of initiation of the explosive mixture, after discovering the fuel gas source and analyzing how the mixture was formed. Due to the geometric complexity of the space in which the explosion occurred, incident, reflected or compound shock waves generated by explosion can create a footprint of the event that questions the location of the source of initiation. Depending on the possible sources found in the field, the INSEMEX Laboratory of Computational Simulations performs analyzes based on finite elements and finite volumes methods. The elements taken into account in the computational simulations concern both the geometry of the space, the nature of the combustible gas leakage, the dispersion of the gas, and the resulting thermal and mechanical effects.

scholarly journals IoT Utilized Gas-Leakage Monitoring System with Adaptive Controls Applicable to Dual Fuel Powered Naval Vessels/Ships: Development & Implementation

2020 ◽  
Vol 20 (1) ◽  
pp. 138-155
Author(s):  
Avijit Mallik ◽  
Sharif Ahmed ◽  
G. M. M. Hossain ◽  
M. R. Rahman
Keyword(s):  
Environmental Changes ◽  
Signal Transmission ◽  
Dual Fuel ◽  
Closed Volume ◽  
Liquefied Petroleum Gas ◽  
Gas Leakage ◽  
Adaptive Controls ◽  
Auto Ignition ◽  
Leakage Monitoring ◽  
Marine Vessels

AbstractLeakage of Liquefied Petroleum Gas and Liquified Natural Gas (LPG/LNG) produces hazardous and toxic impact on humans and other living creatures. The authors developed a system to monitor and control the gas leakage concentration. MQ-6 gas sensor is used for sensing the level of gas concentration in a closed volume. To monitor the consequences of environmental changes an IoT platform hosted by “Thingspeak” platform has been introduced. Both robust and cloud-forwarded controls have been applied to prevent uncontrolled leakage of those gases and auto-ignition. This type of system can be directly applied to the engine chamber/ fuel chamber of the modern marine vessels using dual fuel power cycle with LPG/LNG as secondary fuel-flamer. The results from the experiments clearly indicate satisfactory actuation speed and accuracy. The trials performed by the authors showed about 99% efficiency of signal transmission and actuation.

scholarly journals Thermal Sensor Boiler Monitoring based on Wireless Sensing

2018 ◽  
Vol 14 (08) ◽  
pp. 107
Author(s):  
Duan Aixia ◽  
Huang Yongzhi ◽  
Duan Yanling ◽  
Wang Qiuhong
Keyword(s):  
Power Plant ◽  
Premature Aging ◽  
Stable Operation ◽  
Monitoring Methods ◽  
Efficient Operation ◽  
Gas Leakage ◽  
Power Plant Boiler ◽  
Status Assessment ◽  
Leakage Monitoring ◽  
Plant Boiler

To solve the problems of traditional wiring monitoring methods, such as difficulty in wiring, high temperature, and premature aging of the lines, the development status and trend of ZigBee technology were analyzed. A ZigBee-based online gas leakage monitoring system for power plant boilers was designed to avoid gas leakage in these boilers. ZigBee short-range wireless communication technology was used instead of the wired method to complete online monitoring of power plant boilers. Results showed that the system timely monitored the gas leakage and revealed the operating status of the power plant boiler in real time. In addition, the next moment of gas leakage was predicted, which ensured the safe and stable operation of the power plant boiler. In summary, gray system theory provides powerful theoretical support for the leakage status assessment and gas leakage prediction of the boiler. The proposed system ensures the safe, stable, and efficient operation of the power plant boiler.

Design and Experiment of Fumigant Gas Trace Detection System Based on Photoionization

2014 ◽  
Vol 1037 ◽  
pp. 129-133
Author(s):  
Shao Run Gong ◽  
Yue Jin Wang ◽  
Guang Ping Zhang ◽  
Guo Ping Zhan ◽  
Bing Zou ◽  
...  
Keyword(s):  
Relative Humidity ◽  
System Design ◽  
Methyl Bromide ◽  
Detection System ◽  
Trace Detection ◽  
Gas Leakage ◽  
Inspection And Quarantine ◽  
Photoionization Detector ◽  
Proper Design ◽  
Leakage Monitoring

To meet the requirements, based on the provision of Administration of Quality Supervision, Inspection and Quarantine (AQSIQ), of gas leakage monitoring inside dosing room of fumigant warehouse at the inspection and quarantine port, a fumigant gas trace detection system (FGTDS) based on photoionization detector (PID) is developed. The principle, structure and characteristic of the system design are especially demonstrated. The test data under different temperature, relative humidity (RH) and methyl bromide concentration demonstrate that the FGTDS based on PID can measure methyl bromide under very low concentration. A conclusion can be drawn that the requirements of gas leakage monitoring inside dosing room of fumigation warehouse at the inspection and quarantine port can be met through further proper design.

Gas leakage monitoring with scanned-wavelength direct absorption spectroscopy

2010 ◽  
Vol 8 (5) ◽  
pp. 443-446 ◽  
Author(s):  
张帅 Shuai Zhang ◽  
刘文清 Wenqing Liu ◽  
张玉钧 Yujun Zhang ◽  
束小文 Xiaowen Shu ◽  
于殿强 Dianqiang Yu ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Direct Absorption ◽  
Gas Leakage ◽  
Direct Absorption Spectroscopy ◽  
Leakage Monitoring
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