2023.10.1 In the comprehensive evaluation of thermal humidity risk of mine thermal environment, the larger the value of some indexes, the higher the risk level of thermal humidity, such as depth, temperature, relative humidity and quantitatively transformed
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2022.1.14 Abstract Heat stress is a major concern for the health, safety and productivity of miners working in hot and humid underground mines.
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2018.6.1 In underground mines, there are many heat sources that cause the increase of temperature and humidity of air during its travel through mine airways and production
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2020.7.1 Typical ventilation parameters including temperature, humidity, and gas concentrations were monitored using sensors in a laboratory setting and various ratios
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2023.2.9 Considering the safety and health of mining workers, a modified PHS model for a warm and humid climate would be more suitable for evaluating underground mines during intelligent mining. This paper
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2020.10.9 Metrics Abstract Understanding the effects of various ventilation and climatic parameters on the work conditions and comfort in underground mines is critical
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2021.6.29 Four Lascar EL-USB-2-LCD data loggers were set up to measure temperature and humidity levels in the working and living environments of four mining
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2019.8.17 Maximum allowable exposure time of workers with different clothing insulation (M=200 W/m 2 , Dmax=3900, W.h.g/m 2 , Va=1.5 m/s, RH=80%) Control methods in the process of heat
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2022.1.27 In this study, measurement studies have been carried out to determine the increase of heat and humidity in a coal mine using mechanized production method in
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2023.1.1 Request PDF Thermal Humidity Risk Assessment in High-Temperature Environment of Mines Based on Uncertainty Measurement Theory As the depth of
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2023.2.24 The wind velocity, temperature, and humidity parameters of mine roadway air flow have already been tested and simulated by many scholars. ... In the stope, it is necessary to measure the temperature,
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2008.7.1 In this investigation, flexible sensors embedded in a membrane electrode assembly (MEA) are fabricated to measure the temperature and humidity of a micro-fuel cell. Fuel cell performance was determined by the temperature and humidity of the MEA. Restrictions on the sensor volume are such that in previous investigations the
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2017.8.25 Accurate measurement of dry bulb temperature and relative humidity at different crit-ical locations/areas of underground coal mines is a challenge to the underground coal mining industry. A small change in dry bulb temperature and relative humidity can cause human fatigue, mine hazards, equipment failures and decreased
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2022.11.11 The important role of ventilation in underground mines is to ensure safety and adequate environmental conditions in all accessible areas of a mine. This research aims to develop low-cost solutions for monitoring ventilation parameters in underground mines using the Internet of Things (IoT). A comparison between standard measuring equipment
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2020.10.13 deep underground mine environments, high temperature and humidity creates risks because of large amounts of heat generated from geothermal heat, mining machines, groundwater and mine water. There have been many assessment methods for underground mine environment, such as dry-bulb temperature and wet-bulb temperature.
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2018.3.1 Particularly, in sport, military, and mining industry settings, use of an appropriate index can help prevent heat- and cold-related illnesses. • Climate zone classifications: Heat stress indices can be used to determine climate zones. These classifications are important to assure a safe and comfortable work environment.
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2020.9.10 Using low-cost gas sensors for air quality monitoring promises cost effective and convenient measurement systems. Nevertheless, the results obtained have a questionable quality due to different factors that can affect sensor performance. The most discussed ones are relative humidity and air temperature. This investigation aimed to
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2023.3.14 Step 3. For the sensor’s reading, the sensor’s output is connected to an Arduino analog input. So, the Arduino will read the input data from the sensors like the humidity and temperature of the room. Step 4. Convert the data read from the sensor into normalized data set to show the data as a percentage. Step 5.
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2023.4.26 Underground mining operations present critical safety hazards due to limited visibility and blind areas, which can lead to collisions between mobile machines and vehicles or persons, causing accidents and fatalities. This paper aims to survey the existing literature on anti-collision systems based on computer vision for pedestrian detection in
Read More2020.10.9 where, q is the heat flux [W]. A is the area through which q passes [m 2]. k is the thermal conductivity [W/(m°C)]. θ is the temperature [°C]. x is the vertical distance [m]. The thermal conductivity, k, is a slowly changing function of temperature.The depth of the intake shaft where heat flow reverses varies by season (to some extent even daily), firstly
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2022.8.12 a combination of criteria including humidity, air temperature, wind speed, and radiation that exceeds a wet bulb globe tem-perature of 26.1 °C. From 2010 to September 2019, the Mine Safety and ... applicable to the mining industry, is conducted, in order to evaluate the state-of-the-art standards and practices. 2 Definitions
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2020.7.25 An ordinary thermometer measures dry-bulb temperature. This type of measurement is completely independent of air humidity and airvelocity, as well as from the heat radiation of nearby objects. Wet-bulb Temperature (T w) Wet bulb-temperature measurement involves air humidity content, which is determined by using a wet-bulb
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2021.4.30 Special Issue Information. Dear Colleagues, Humidity sensors are used for measuring relative humidity, absolute humidity, and the dew point. Moisture monitoring together with temperature monitoring are crucial in many industrial and agricultural applications. In industry, humidity monitoring is needed in manufacturing, such as wafer
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2023.7.7 Accurate measurement of dry bulb temperature and relative humidity at different crit-ical locations/areas of underground coal mines is a challenge to the underground coal mining industry. A small change in dry bulb temperature and relative humidity can cause human fatigue, mine hazards, equipment failures and decreased
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2020.10.1 In a study on heat exhaustion in a deep underground mine in tropical arid Australia, Donoghue et al. [29] found 94.2 out of 1000 miners yearly were victims of heat exhaustion. Lazaro et al ...
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2013.6.1 The paper enumerates operating principle, working procedure and application of different types of sensors for monitoring toxic and flammable gases in hazardous areas. Sensor output vs. methane ...
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sensor which is a sensor for measuring temperature and humidity. The results of testing four DHT11 sensor units outside the room obtained an average temperature value of 28.94 °C and humidity of 59.6% using the Xbee network. The average value of indoor temperature and humidity test results was 29.14 °C and 58.86% with the Xbee’s range ...
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2020.10.4 The sustainable development of an organisation requires a holistic approach to the evaluation of an enterprise’s goals and activities. The essential means enabling an organisation to achieve goals are business processes. Properly managed, business processes are a source of revenue and become an implementation of business
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2022.12.7 In this paper, we test the impact of weather-related disasters on the individual firm’s equity financing cost based on Chinese listed companies in the mining industry. We collect data from the China Meteorological Disaster Yearbook and CSMAR database. Using direct economic loss associated with extreme weather-related events to
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2022.3.24 With the gradual depletion of shallow resources, the process of resource exploitation is being transferred to greater depths. The temperature of the surrounding rock increases gradually in the process of deep mining, and the temperature of the underground substation chambers often exceeds the normal working temperature in summer. In this
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