Functioning Efficiency of the Central Air-Conditioning System on the Selected Example

• Autorzy: Szlązak Nikodem , Swolkień Justyna

Identyfikatory

DOI

10.2478/ntpe-2020-0005

• Języki publikacji: EN

Abstrakty

EN

One of the particularly significant threats during exploitation is the climatic threat, which is associated with an increase in the overall costs that are allocated to combating it. The rise in the virgin temperature of the rock mass by 1^oC increases the demand for the required cooling capacity to be taken from the air. The publication assesses the effectiveness of the air-conditioning installation by testing its operation on a selected example. The assessment of the efficiency of the air-conditioning installation for a selected hard coal mine showed that none of the five tested coolers achieved the maximum assumed rated power. The use of total power (7.5 MW) in mining excavations was less than 50% and amounted to η = 0.472%. The research showed that the main reason for obtaining low cooling parameters is the inability to locate them in the place of the highest air temperatures. The other problem is an insufficient airflow rate of cooling water supplied to the coolers at too high temperature. The above considerations indicated that the cooling power from built-in air- conditioning systems is not properly and effectively used. Improving the efficiency of its functioning is possible by proceeding research that will eliminate the above factors and by using air conditioning equipment, taking into account the periodic audit of their work to reduce electricity consumption.

Słowa kluczowe

EN

air conditioning; climate hazard; cooling power

PL

klimatyzacja; zagrożenie klimatyczne; moc chłodzenia

• Wydawca: STE GROUP ; De Gruyter
• Czasopismo: New Trends in Production Engineering
• Rocznik: 2020
• Tom: Vol. 3, Iss. 1
• Strony: 41--55
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Szlązak Nikodem

• AGH University of Science and Technology, Poland

autor

Swolkień Justyna

• AGH University of Science and Technology, Poland

Bibliografia

• 1. Rozporządzenia Ministra Energii z dnia 23 listopada 2016 r. w sprawie szczegółowych wymagań dotyczących prowadzenia ruchu podziemnych zakładów górniczych,
• 2. Rozporządzeniu Ministra Środowiska z 1 lipca 2017 roku w sprawie zagrożeń naturalnych w zakładach górniczych,
• 3. Guo, P.; Wang, Y.; Duan, M.; Pang, D.; Li, N. (2015): Research and application of methods for effectiveness evaluation of mine cooling system. Int. J. Min. Sci. Technol. 25, 649–654.
• 4. Hartman, H.L.; Mutmansky, J.M.; Ramani, R.V.; Wang, Y.J. (1997): Mine Ventilation and Air Conditioning, 3rd ed. John Wiley & Sons, Inc.: New York, NY, USA, 1997; p. 583; ISBN 978-0-471-11635-6.
• 5. Maurya, T.; Kailash, K.; Vardhan, H.; Aruna, M.; Raj, G.M. (2015): Effect of Heat on Underground MineWorkers. Procedia Earth Planet. Sci. 11, 491-498.
• 6. McPherson, M.J. (2012): Subsurface Ventilation and Environmental Engineering; Springer Science & Business Media. New Delhi, India, Chapter 14; p. 491; ISBN 978-94-011-1550-6.
• 7. Millar, D.; Trapani, K.; Romero, A. (2016): Deep mine cooling, a case for Northern Ontario: Part I. Int. J. Min. Sci. Technol. 26, 721-727.
• 8. Ramsden, R.; Branch, A.R.; Wilson, R. (2007): Factors influencing the choice of cooling and refrigeration systems for mines. J. Mine Vent. Soc. S. Afr. 60, pp. 92-98.
• 9. Szlązak N., Obracaj D., Borowski M. (2005) – Kierunki rozwoju klimatyzacji w polskich kopalniach węgla kamiennego. XXXVII Dni Chłodnictwa: aktualne tendencje w rozwiązaniach technicznych urządzeń i systemów chłodniczych i klimatyzacyjnych. Konferencja naukowo-techniczna, Poznań, 23-24 listopada 2005 Wyd. SYSTHERM Chłodnictwo i Klimatyzacja Sp. z o. o. Poznań, pp. 243-256.
• 10. Szlązak N, Obracaj D, Borowski M. (2008a) – Methods for controlling temperature hazard in Polish coal mines. Archives of Mining Sciences, Vol. 53, issue.4, pp. 497-510.
• 11. Szlązak N, Obracaj D, Borowski M. (2008b): Forecasting air temperature and humidity in workings with separate ventilation systems and cooling devices of the immediate application using computer software. Wiadomości Górnicze 59 (2), pp. 86-96.
• 12. Szlązak N, Obracaj D, Borowski M. (2008a) – Methods for controlling temperature hazard in Polish coal mines. Archives of Mining Sciences, Vol. 53, issue.4, pp. 497-510.
• 13. Szlązak N, Obracaj D, Borowski M. (2008b): Forecasting air temperature and humidity in workings with separate ventilation systems and cooling devices of the immediate application using computer software. Wiadomości Górnicze 59 (2), pp. 86-96.
• 14. Szlązak N., Obracaj D., Borowski M., Swolkień J. (2009): Methods for improving thermal work conditions in Polish coal mines. Ninth International Mine Ventilation Congress, Oxford & IBH Publishing Co. Pvt. Ltd, New Delhi, pp. 253-262.
• 15. Szlązak N., Obracaj D., Głuch B. (2013): Estimation of microclimate condition in longwall excavations in hard coal mines. AGH Journal of Mining and Geoengineering; ISSN 2299-257X. Vol. 37 no. 1, pp. 117-128
• 16. Szlązak N., Obracaj D., Swolkień J. (2018a): An evaluation of and possible improvements of the state of climate hazard in Polish underground mines: a monograph, Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Kraków: Agencja Wydawniczo-Poligraficzna ART-TEKST, 203 pp. ISBN: 978-83-7783-198-4
• 17. Szlązak N., Obracaj D., Swolkień J. (2018b): An evaluation of the functioning of cooling systems in the Polish coal mine industry, [an electronic document]. Electronic journal; ISSN 1996-1073., vol. 11 issue 9, art. no. 2267, pp. 1-5. System requirements: Adobe Reader. Available online since 2018-08-29: https://www.mdpi.com/1996-1073/11/9/2267/pdf
• 18. Whillier, A. (1980): Refrigeration applied in the cooling of mines. Int. J. Refrig. 3, pp. 341-345.
• 19. WUG (Higher Mining Institute) (2018): An evaluation of the state of work safety, mine rescue operations and public safety in the context of mining and geological activity in 2017 State Mining Authority, Katowice,pp. 1-54.
• 20. Vosloo, J.; Liebenberg, L.; Velleman, D. (2012): Case study: Energy savings for a deep-mine water reticulation system. Appl. Energy 92, pp. 328-335.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).