Журналы →  Gornyi Zhurnal →  2017 →  №3 →  Назад

INDUSTRY SAFETY AND LABOUR PROTECTION
Название Energy-efficient air conditioning in shallow mines
DOI 10.17580/gzh.2017.03.13
Автор Nikolaev A. V.
Информация об авторе

Perm National Research Polytechnic University, Perm, Russia:

A. V. Nikolaev, Associate Professor, Candidate of Engineering Sciences, nikolaev0811@mail.ru

Реферат

Shallow mines (to a depth of 500 m and less), for examples, mines at the Upper Kama potassium–magnesium salt deposit, face difficulties connected with heavy condensate formation in underground excavations during ventilation in warm seasons. This problem is particularly topical in salt rock mines as interaction of salt rocks with water results in generation of electrolytic solution that gives rise to wear of equipment. To prevent (reduce) moisture dropout, mine ventilation networks use mine air conditioning systems (ACS, cooling and dehydration). The application of such systems is limited as they require extremely much electric energy. This article proposes the air conditioning method, when warm air generated during cooling of air conditioner gas is “discharged” to return ventilation air flow in ventilation shaft. Condenser (air cooler) is suggested to be installed at an outlet of air supply shaft near the ventilation shaft. The condenser will pass air cooled in the air supply shaft that is far away from the ventilation shaft. As the condenser is in the underground excavation, it is sufficient to cool air in the condenser only down to temperature of surrounding rocks. In this case, secondary condensation events are eliminated, and energy consumed by the air treatment system is reduced. Owing to positive natural draft (thermal drop of ventilation pressure) and ejection effect, power consumed by ventilation system in whole is decreased. The technical-and-economic calculations have proved high energy efficiency of the proposed method.

Ключевые слова Air conditioning system, energy saving, energy efficiency, ejection process
Библиографический список

1. McPherson M. J., Robinson G. Barometric survey of shafts at Baulby Mine, Cleveland Potash. Journal of Mine Ventilation of South Africa. 1980. Vol. 33(9). pp. 145–164.
2. Mokhirev N. N., Radko V. V. Engineering calculations of shaft ventilation. Construction. Reconstruction. Exploitation. Moscow : LLC «Nedra-Biznestsentr», 2007. 324 p.
3. Knothe S., Nowak B., Szlazak M. Wplyw wilgotnosci na przeplyw powietrza w glebokicii szybach wentylacyjnych. Arch. Gorn. 1986. Vol. 31, No. 2. pp. 289–303.
4. Dudar E. S. The impact of the rock hygroscopicity on the liquid condensation process in the mine ventilation network. Gornyy informatsionno-analiticheskiy byulleten. 2011. No. 3. pp. 202–205.
5. Sanitary Rules and Regulations SNiP 23-01-99. Construction climatology. Moscow : Gosstroy, 2000. 91 p.
6. Voropaev A. F. Thermal conditioning of mine air in deep mines. Moscow : Nedra, 1979. 192 p.
7. Alymenko N. I., Kamenskikh A. A., Nikolaev A. V., Petrov A. I. Numerical modeling of heat and mass transfer during hot and cool air mixing in air supply shaft in underground mine. Eurasian Mining. 2016. No. 2. pp. 45–47. DOI: 10.17580/em.2016.02.11
8. Gendler S. G. The justification of new technique ventilation at conctraction of working with two exits in soil surface. Eurasian Mining. 2016. No. 2. pp. 41–44. DOI: 10.17580/em.2016.02.10
9. Krasnov Yu. S., Borisoglebskiy A. P., Antipov A. V. Ventilation and conditioning systems. Moscow : Termokul, 2004. 373 p.
10. Belousov V. I., Shvab R. G., Batyanovskiy A. L. Control of temperature of mine supply air. Gornyi Zhurnal. 2014. No. 2. pp. 45–47.
11. Nikolaev A. V., Alymenko N. I., Faynburg G. Z., Nikolaev V. A. Shallow mine ventilanion system. Patent RF, No. 140553, IPC E21F1/00. Applied: 05.12.2013. Published: 10.05.2014. Bulletin No. 13.
12. Nikolaev A. V. The System for Conditioning Mine Air. Gornoe oborudovanie i elektromekhanika. 2014. No. 12. pp. 34–39.
13. Bruce W. E. Natural draft: its measurement and modeling in underground mine ventilation systems. US : Dept. of Labor, Mine Safety and Health Administration, 1986. 34 p.
14. Linden P. F. The fluid mechanics of natural ventilation. Annual Review of Fluid Mechanics. 1999. Vol. 31. pp. 201–238.
15. Jianwei Cheng, Yan Wu, Haiming Xu, Jin Liu, Yekang Yang, Huangjun Deng, Yi Wang. Comprehensive and integrated mine ventilation consultation model. Tunneling and Underground Space Technology. 2015. Vol. 45. pp. 166–180.
16. Alymenko N. I., Nikolaev A. V. Influence of mutual alignment of mine shafts on thermal drop of ventilation pressure between the shafts. Journal of Mining Science. 2011. Vol. 47, No. 5. pp. 636–642.
17. Levin L. Yu., Semin M. A., Zaitsev A. V. Mathematical methods of forecasting microclimate conditions in an arbitrary layout network of underground excavations. Journal of Mining Science. 2014. Vol. 50, No. 2. pp. 371–378.
18. Kazakov B. P., Shalimov A. V., Semin M. A. Stability of natural ventilation mode after main fan shutdown. International Journal of Heat and Mass Transfer. 2015. Vol. 86. pp. 288–293.
19. Mokhirev H. H., Kazakov B. P., Stukalov V. A. Testing of air dehumidification system in the mine of JSC «Uralkaliy». Gornyi Zhurnal. 1998. No. 6. pp. 69–70.
20. Shadrina A., Saruev L. Exploration and determination of the principles of rotary-percussive underground slimhole drilling. International Journal of Mining Science and Technology. 2014. Vol. 24(2). pp. 245–249.

Language of full-text русский
Полный текст статьи Получить
Назад