Building a non-homogeneous thermal environment for energy savings in the face of deep mines

• Autorzy: Li Xian , Wu Yaru , Zhang Yunfei

Identyfikatory

DOI

10.24425/ams.2021.138600

• Języki publikacji: EN

Abstrakty

EN

Heat exhaustion of mining environments can cause a significant threat to human health. The existing cooling strategies for the mine face aim to cool the whole face. However, the necessary cooling space for the face is small, with a considerable amount of energy for cooling being wasted. Necessary cooling space is a space occupied by the workers in the face. This study proposed to build a non-homogeneous thermal environment for cost-effective energy savings in the face. An inlet air cooler was laid out in the intake airway to cool the whole face to some extent, and the tracking air cooler was designed to track the worker who constantly moved to improve the thermal environment. The cooling load and air distribution for this cooling strategy were investigated. In addition, the airflow in the face was solved numerically to estimate the cooling effect. The results revealed that an average energy saving of approximately 35% could be achieved. The thermal environment of the necessary cooling space within at least 10 m was significantly improved. This cooling strategy should be taken into account in mine cooling.

Słowa kluczowe

EN

mine face; cooling strategy; non-homogeneous environment; air cooler; necessary cooling space

PL

kopalnia; chłodzenie kopalni; klimatyzacja w kopalni

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2021
• Tom: Vol. 66, no. 3
• Strony: 457--474
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Li Xian

• Linyi University, School of Civil Engineering and Architecture, Linyi 276000, P. R. China

• https://orcid.org/0000-0002-8482-8897

autor

Wu Yaru

• Linyi University, School of Civil Engineering and Architecture, Linyi 276000, P. R. China

• https://orcid.org/0000-0001-6168-3376

autor

Zhang Yunfei

• Hohai University, College of Civil and Transportation Engineering, Nanjing 210098, P. R. China

• https://orcid.org/0000-0002-4672-9345

Bibliografia

• [1] J.A. Crawford, H.P.R. Joubert, M.J. Mathews, M. Kleingeld, Optimised dynamic control philosophy for improved performance of mine cooling systems. Appl. Therm. Eng. 150, 50-60 (2019). DOI : https://doi.org/10.1016/j.applthermaleng.2018.12.160.
• [2] Z. Chu, J. Ji, X. Zhang, H. Yan, H. Dong, J. Liu, Development of ZL400 mine cooling unit using semi-hermetic screw compressor and its application on local air conditioning in underground long-wall face. Arch. Min. Sci. 61 (4), 949-966 (2016). DOI: https://doi.org/10.1515/amsc-2016-0063.
• [3] L. Guo, W. Nie, S. Yin, Q. Liu, Y. Hua, L. Cheng, X. Cai, Z. Xiu, T. Du, The dust diffusion modeling and determination of optimal airflow rate for removing the dust generated during mine tunneling. Build. Environ. 178, 106846 (2020). DOI: https://doi.org/10.1016/j.buildenv.2020.106846.
• [4] Z. Różański, P. Wrona, J. Sułkowski, J. Drenda, G. Pach, Two stage assessment of thermal hazard in an underground mine. Arch. Min. Sci. 61 (2), 309-322 (2016). DOI: https://doi.org/10.1515/amsc-2016-0023.
• [5] J. Ji, N. Li, Z. Chang, Y. Fan, L. Ni, Study on heat transfer characteristic parameters and cooling effect of cold wall cooling system in coal mines. Exp. Heat. Transfer. 33 (2), 1-18 (2019). DOI : https://doi.org/10.1080/08916152.2019.1576802.
• [6] Z.G. Su, Z.A. Jiang, Z.Q. Sun, Study on the heat hazard of deep exploitation in high-temperature mines and its evaluation index. Procedia Earth Planet. Sci. 1, 414-419 (2009). DOI: https://doi.org/10.1016/j.proeps.2009.09.066.
• [7] A.M. Donoghue, M.J. Sinclair, G.P. Bates, Heat exhaustion in a deep underground metalliferous mine. Occup. Environ. Med. 57, 165-74 (2000).
• [8] E.H. Lee, C. Luo, Y.L. Sam, A.C. Roberts, K.W. Kwok, J. Car, C. Soh, G.I. Christopoulos, The underground workspaces questionnaire (UWSQ): Investigating public attitudes toward working in underground spaces. Build. Environ. 153, 28-34 (2019). DOI: https://doi.org/10.1016/j.buildenv.2019.02.017.
• [9] G. Katavoutas, M.N. Assimakopoulos, D.N. Asimakopoulos, On the determination of the thermal comfort conditions of a metropolitan city underground railway. Sci. Total. Environ. 566, 877-887 (2016). DOI : https://doi.org/10.1016/j.scitotenv.2016.05.047.
• [10] L.E. Armstrong, R.M. Lopez, Return to exercise training after heat exhaustion. J. Sport Rehab. 16, 182-189 (2007). DOI: https://doi.org/10.1016/j.jsams.2006.11.001.
• [11] Y. Kasap, The effect of work accidents on the efficiency of production in the coal sector. S. Afr. J. Sci. 107, 77-85 (2011). DOI: https://doi.org/10.4102/sajs.v107i5/6.513.
• [12] H.S. Li, S.Y. Liu, H.H. Chang, Experimental research on the influence of working parameters on the drilling efficiency. Tunnel. Underground Space Technol. 95, 11 (2020). DOI: https://doi.org/10.1016/j.tust.2019.103174.
• [13] J.G. Pretorius, M.J. Mathews, P. Maré, M. Kleingeld, J.V. Rensburg, Implementing a DIKW model on a deep mine cooling system. Int. J. Min. Sci. Technol. 29 (2), 319-326 (2019). DOI : https://doi.org/10.3969/j.issn.2095-2686.2019.02.019.
• [14] N. Szlązak, D. Obracaj, J. Swolkień, K. Piergies, Controlling the distribution of cold water in air cooling systems of underground mines. Arch. Min. Sci. 61 (4), 793-807 (2016). DOI: https://doi.org/10.1515/amsc-2016-0054.
• [15] C . Jin, X. Bai, Y. An, J. Ni, J. Shen, Case study regarding the thermal environment and energy efficiency of raisedfloor and row-based cooling. Build. Environ. 182, 107110 (2020). DOI : https://doi.org/10.1016/j.buildenv.2020.107110.
• [16] S. Wang, L. Jin, Z. Han, Y. Li, S. Ou, N. Gao, Z. Huang, Discharging performance of a forced-circulation ice thermal storage system for a permanent refuge chamber in an underground mine. Appl. Therm. Eng. 110, 703-709 (2017). DOI: https://doi.org/10.1016/j.applthermaleng.2016.08.192.
• [17] B. Nowak, P. Życzkowski, R. Łuczak, Functional dependence of thermodynamic and thermokinetic parameters of refrigerants used in mine air refrigerators. Part 1-refrigerant R407C. Arch. Min. Sci. 62 (1), 55-72 (2017). DOI: https://doi.org/10.1515/amsc-2017-0005.
• [18] S. Rahnama, P. Sadeghian, P.V. Nielsen, C. Zhang, S. Sadrizadeh, A. Afshari, Cooling capacity of diffuse ceiling ventilation system and the impact of heat load and diffuse panel distribution. Build. Environ. 185, 107290 (2020). DOI: https://doi.org/10.1016/j.buildenv.2020.107290.
• [19] H . Shi, Q. Chen, Building energy management decision-making in the real world: A comparative study of HVAC cooling strategies. J. Build. Eng. 33, 101869 (2021). DOI: https://doi.org/10.1016/j.jobe.2020.101869.
• [20] H.X. Guo, K.J. Zhu, C. Ding, L.L. Li, Intelligent optimization for project scheduling of the first mining face in coal mining. Expert Syst. Appl. 37, 1294-1301 (2010). DOI: https://doi.org/10.1016/j.eswa.2009.06.025.
• [21] T. Ahmad, H.X. Chen, Short and medium-term forecasting of cooling and heating load demand in building environment with data-mining based approaches. Energ. Buildings. 166, 460-76 (2018). DOI : https://doi.org/10.1016/j.enbuild.2018.01.066.
• [22] P. Guo, C. Chen, Field experimental study on the cooling effect of mine cooling system acquiring cold source from return air. Int. J. Min. Sci. Technol. 23, 453-456 (2013). DOI: https://doi.org/10.1016/j.ijmst.2013.05.008.
• [23] E. Abdelaziz, R. Saidur, S. Mekhilef, A review on energy saving strategies in industrial sector. Renewable Sustainable Energy Rev. 15, 150-168 (2011). DOI: https://doi.org/10.1016/j.rser.2010.09.003.
• [24] G .E. du Plessis, L. Liebenberg, E.H. Mathews, Case study: The effects of a variable flow energy saving strategy on a deep-mine cooling system. Appl. Energ. 102, 700-709 (2013). DOI : https://doi.org/10.1016/j.apenergy.2012.08.024.
• [25] H .L. Hartman, J.M. Mutmansky, R.V. Ramani, Y. Wang, Mine ventilation and air conditioning, 2012 John Wiley & Sons, California.
• [26] A.W. Homer, Coal mine safety regulation in China and the USA. J. Contemp. Asia. 39, 4-39 (2009).
• [27] A.P. Sasmito, J.C. Kurnia, E. Birgersson, A.S. Mujumdar, Computational evaluation of thermal management strategies in an underground mine. Appl. Therm. Eng. 90, 1144-1150 (2015). DOI: https://doi.org/10.1016/j.applthermaleng.2015.01.062.
• [28] X. Li, H. Fu, Development of an efficient cooling strategy in the heading face of underground mines. Energies 13 (5), 1116 (2020). DOI: https://doi.org/10.3390/en13051116.