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The role of ventilation systems is to ensure and maintain optimal microclimate conditions in industrial spaces, by controlling temperature, humidity, dust concentration and gaseous substances, within limits compatible with comfort and safety requirements. At the same time, these systems must respect permissible noise levels and air circulation speed, so as not to affect the well-being of users. In order to achieve the prescribed parameters of indoor air (temperature, pressure and humidity), it is previously subjec...

This paper presents the development and experimental validation of an intelligent variable-structure control system for optimizing industrial ventilation in ATEX (ATmospheres EXplosibles) environments. Current ventilation solutions, based on continuous maximum-flow operation, consume 15 to 40 percent of total industrial hall energy and remain largely reactive to hazardous atmosphere formation. The proposed system integrates Model Predictive Control (MPC) with Artificial Neural Network (ANN) algorithms and a spatia...

The problem of industrial ventilation has arisen as a result of the serious pollution problems that arise both in the industrial and industrial environments. Before addressing an industrial ventilation study, the question should be raised whether there is no simpler means of reducing or eliminating the causes of pollution or of reducing pollution by modifying the production process or the design and construction of the actual ventilation system . The commissioning of an industrial ventilation system occurs wheneve...

Ensuring safety from the point of view of the air is determined by the importance of re-ducing the risks of untimely appearance of toxic and explosive gases in the underground workings of the salt mine, while maintaining safety and security sanity at work by monitoring and foreseeing possible failures and voluntary conscious actions under-ground. Still keeping in mind the context of the society from the socio-political-economic point of view and for the development of knowledge in the problem studied the following...

The working environment specific to underground activity under normal operating conditions refers to the type and concentration of gases specific to the underground atmosphere (O2, CO2, CH4, CO, N2, CnHn), the humidity present in the underground atmosphere, the type and concentration of suspended dust, barometric pressure, air temperature, air speed, flow rates, etc. In order to know the normal environmental conditions specific to an underground workplace, specialized measurements and laboratory determinations are...

In the last decade, at the global level, most countries have emphasized the reduction of energy consumption produced with the help of solid fuels, trying to reduce the volume of greenhouse gases and polluting gases by identifying new sources and methods of energy production that have a low effect on the environment and people. Romania is preparing to ensure energy security by producing electricity from renewable sources. Romania's medium- and long-term strategy will be influenced by the European Green Pact, which ...

Multiple crises in recent years, including the health crisis caused by the COVID-19 pandemic, the global energy crisis, the climate crisis, the decarbonization of the energy mix, the European Green Pact, the energy transition, the conflict in Ukraine, and the energy trilemma, have created the conditions for a new energy revolution. If the listed influencing factors, the sanctions imposed on Russian oil and gas as well as the confrontation with the components of the trilemma, energy security, minimal impact on the ...

The increase of the population also involve the increase of the consumption of raw materials. This requires the diversification and development of industrial processes in closed semi-enclosed or open spaces. The carrying out of human activities of an industrial nature involves the accidental use, handling or presence of explosive substances such as methane. The presence of this gas in closed or semi-closed spaces can generate explosion phenomena. The dynamics of methane discharge in closed enclosures, industrial o...

The ventilation network related to a mining unit for the exploitation of the useful mineral substance aims to ensure optimal microclimate conditions in underground. An ventilation network is made up of nodes and branches in order to establish its structure. In this sense, the mine ventilation must be seen as a source of life, in which the ramifications represent at the same time the arteries that transport the air to the working fronts and the evacuation of the poluted air to the surface. In order to establish the...

The energy crisis triggered globally in the last quarter of 2021, forced Romania to go through a winter with liberalized electricity and gas prices, a period unprecedented in terms of consumer prices, accentuated by the result of closing energy targets that coalfired operations as a result of the imposition of EU conditions for the restructuring of the mining and energy sector. The year before, 2020, the COVID-19 pandemic, with restrictions imposed, produced a decrease in electricity demand, a decline in coal-fire...

In Oituz and Targu Ocna, the attestation of salt extraction was established during the Geto-Dacian period. The oldest written testimony dates from 1380. The mining works that serve the Trotus mine within the Tg. Ocna Salt Mine, are located in the Fetele Targului salt massif located near the town of Tg. Ocna, on the left side of the Trotus river. Currently, the Trotu? Salt Mine has 14 horizons: 2 at the Pilot mine and 12 at the Trotu? mine. The specialized 3D CANVENT program was used to establish the optimal distri...