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

• Autorzy: Nikodem Szlązak , Justyna Swolkień
• 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 1oC 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. (original abstract)

Słowa kluczowe

PL

Zmiany klimatyczne; Zagrożenia ekologiczne; Chłodnictwo; Górnictwo węgla kamiennego

EN

Climate change; Ecological hazard; Refrigeration; Hard bituminous coal mining

• Czasopismo: New Trends in Production Engineering
• Rocznik: 2020
• Tom: 3(1) Selected Aspects of Production Engineering in Management and Materials Engineering
• Strony: 41-55

Twórcy

autor

Nikodem Szlązak

• AGH University of Science and Technology Kraków, Poland

autor

Justyna Swolkień

• AGH University of Science and Technology Kraków, Poland

Bibliografia

• Rozporządzenia Ministra Energii z dnia 23 listopada 2016 r. w sprawie szczegółowych wymagań dotyczących prowadzenia ruchu podziemnych zakładów górniczych,
• Rozporządzenie Ministra Środowiska z 1 lipca 2017 roku w sprawie zagrożeń naturalnych w zakładach górniczych,
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• 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.
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Identyfikatory

DOI

10.2478/ntpe-2020-0005