The results of air treatment process modeling at the location of the air curtain in the air suppliers and ventilation shafts

Nikolaev, A.V.; Kamenskih, A. D.; Nikolaev, Viktor

doi:10.1051/e3sconf/20171502004

Cited by 8 publications

(2 citation statements)

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“…According to (Jesviet et al, 2015, Jesviet & Szekeras, 2016 the cost of mine ventilation often exceeds 25%. In the article (Nikolaev et al, 2017) it is said that from 30% to 50% of electric energy delivered to the mine is used for ventilation purposes.…”

Section: Introductionmentioning

confidence: 99%

Archives of Mining Sciences

Pach

2018

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Mining ventilation should ensure in the excavations required amount of air on the basis of determined regulations and to mitigate various hazards. These excavations are mainly: longwalls, function chambers and headings. Considering the financial aspect, the costs of air distribution should be as low as possible and due to mentioned above issues the optimal air distribution should be taken into account including the workers safety and minimization of the total output power of main ventilation fans. The optimal air distribution is when the airflow rate in the mining areas and functional chambers are suitable to the existing hazards, and the total output power of the main fans is at a minimal but sufficient rate.Restructuring of mining sector in Poland is usually connected with the connection of different mines. Hence, dependent air streams (dependent air stream flows through a branch which links two intake air streams or two return air streams) exist in ventilation networks of connected mines. The zones of intake air and return air include these air streams. There are also particular air streams in the networks which connect subnetworks of main ventilation fans. They enable to direct return air to specified fans and to obtain different airflows in return zone. The new method of decreasing the costs of ventilation is presented in the article.The method allows to determine the optimal parameters of main ventilation fans (fan pressure and air quantity) and optimal air distribution can be achieved as a result. Then the total output power of the fans is the lowest which makes the reduction of costs of mine ventilation.The new method was applied for selected ventilation network. For positive regulation (by means of the stoppings) the optimal air distribution was achieved when the total output power of the fans was 253.311 kW and for most energy-intensive air distribution it was 409.893 kW. The difference between these cases showed the difference in annual energy consumption which was 1 714 MWh what was related to annual costs of fan work equaled 245 102 Euro. Similar values for negative regulation (by means of auxiliary fans) were: the total output power of the fans 203.359 kW (optimal condition) and 362.405 kW (most energy-intensive condition). The difference of annual energy consumption was 1 742 MWh and annual difference of costs was 249 106 Euro. The differences between optimal airflows considering positive and negative regulations were: the total output power of fans 49.952 kW, annual energy consumption 547 MWh, annual costs 78 217 Euro.

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Section: Introductionmentioning

confidence: 99%

Archives of Mining Sciences

Pach

2018

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“…There are limitations to the use of such a platform at facilities, since it is impossible to control the operation of the MFU in automatic mode according to security rules. In this case, a necessary condition for ensuring the operability of the proposed solution is the use of a digital twin of the shaft (mine) ventilation process, in which measurement information will be accumulated, simulation modeling of technological processes will be carried out, and forecasts of the MFU productivity will be made when external factors change [28]. The architecture of the Internet of Things (IoT) platform and its interaction with the digital twin of the ventilation process are given in [26].…”

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confidence: 99%

Application of the cybernetic approach to price-dependent demand response for underground mining enterprise electricity consumption

Nikolaev

Vöth²,

Кычкин

2022

PMI

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The article considers a cybernetic model for the price-dependent demand response (DR) consumed by an underground mining enterprise (UGME), in particular, the main fan unit (MFU). A scheme of the model for managing the energy consumption of a MFU in the DR mode and the implementation of the cybernetic approach to the DR based on the IoT platform are proposed. The main functional requirements and the algorithm of the platform operation are described, the interaction of the platform with the UGME digital model simulator, on which the processes associated with the implementation of the technological process of ventilation and electricity demand response will be simulated in advance, is shown. The results of modeling the reduction in the load on the MFU of a mining enterprise for the day ahead are given. The presented solution makes it possible to determine in advance the necessary power consumption for the operation of the main power supply unit, manage its operation in an energy-saving mode and take into account the predicted changes in the planned one (e.g., when men hoisting along an air shaft) and unscheduled (e.g., when changing outdoor air parameters) modes. The results of the study can be used to reduce the cost of UGME without compromising the safety of technological processes, both through the implementation of energy-saving technical, technological or other measures, and with the participation of enterprises in the DR market. The proposed model ensures a guaranteed receipt of financial compensation for the UGME due to a reasonable change in the power consumption profile of the MFU during the hours of high demand for electricity, set by the system operator of the Unified Energy System.

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The Designing of the New Type of Mine Ventilation Wall

Nikolaev

Gazizullin²,

Nesterov

2019

E3S Web Conf.

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Within the underground mining enterprises, in the event of a fire underground, it is necessary to isolate the mining site or mine workings to protect miners from poisoning by flue gases. To do this, the Mine Ventilation Wall (MVW) is used. Its second purpose is to regulate the air distribution underground, to fence sections not designed for ventilating. This survey describes the design of the MVW new type, which will have a number of competitive advantages in regard analogues existing. The results of mathematical modeling of the MVW properties under different conditions are represented.

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The results of air treatment process modeling at the location of the air curtain in the air suppliers and ventilation shafts

Cited by 8 publications

References 10 publications

Archives of Mining Sciences

Archives of Mining Sciences

Application of the cybernetic approach to price-dependent demand response for underground mining enterprise electricity consumption

The Designing of the New Type of Mine Ventilation Wall

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