Research on Heat and Humidity Transfer Performance Evaluation of Spraying Mine Exhaust Air Heat Exchanger

  • Lingling BaoEmail author
  • Yang Zhao
  • Xiu Su
  • Ziyong Wang
  • Yajing Rong
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 980)


The indexes for evaluating the thermal performance of the spray chamber at home and abroad are introduced and analyzed. Due to the high relative humidity of the exhaust air in the mine, the air-water heat and humidity exchange process is usually carried out along the saturation line, and it is found that the general heat exchange efficiency is basically 1 through testing of different heat and humidity treatment processes, therefore, this indicator has been unable to accurately evaluate the performance of the heat and humidity exchange unit. An index for evaluating the heat and humidity exchange performance of the heat and humidity exchange unit is proposed, defining the heating efficiency and cooling efficiency by used water as the treatment medium in the heat and humidity exchange unit, taking the cooling and dehumidification process of counter-flow air-water heat and mass transfer as an example, the formulas for theoretical calculation include overall heat exchange efficiency, heat transfer efficiency and heating efficiency are derived, furthermore, three dimensionless efficiencies are obtained, and their relationship with the dimensionless mass transfer unit number and water-air ratio is analyzed. It provides a theoretical basis for thermal calculation and performance analysis of counter-flow heat and humidity exchange equipment.


Mine return air Energy recovery Heat and mass transfer Efficiency Number of mass transfer unit (NTUm


  1. 1.
    Sbarba, H.D., Fytas, K., Pareszczsk, J.: Economics of exhaust air heat recovery systems for mine ventilation. Int. J. Min. Reclam. Environ. 26(3), 185–198 (2012)CrossRefGoogle Scholar
  2. 2.
    Lv, X., Zhao, J.: Application of water source heat pump in coal mine. Build. Energy Environ. 2, 64–67 (2011). (In Chinese)Google Scholar
  3. 3.
    Peterson, W.O., Walker, J.N., Duncan, G.A., et al.: Composition of coal mine air in relationship to greenhouse environment control. Trans. ASAE 18(1), 140–144 (1975)CrossRefGoogle Scholar
  4. 4.
    Bao, L.L., Wang, J.G., Zhang, Q.Q., Shi, Z.Z.: Economic analysis of the mine return air heat recovery system. In: International Conference on Energy and Power Engineering (EPE 2014), Hong Kong, 26–27th April, pp. 76–81 (2014)Google Scholar
  5. 5.
    Bao, L., Wang, J., Wang, J.: A waste heat utilization technology of deep coal mine. In: APEC Conference on Low-Carbon Town and Physical Energy Storage, Changsha, Hunan, China, 25–26th May 2013Google Scholar
  6. 6.
    ASHRAE: HVAC 1 toolkit: a toolkit for primary HVAC system energy calculation. American Society of Heating. Refrig. Air Cond. Eng. (1999)Google Scholar
  7. 7.
    Jin, G.Y., Cai, W.J., Lu, L., Lee, E.L., Chiang, A.: A simplified modeling of mechanical cooling tower for control and optimization of HVAC systems. Energy Convers. Manag. 48, 355–365 (2007)CrossRefGoogle Scholar
  8. 8.
    Zhang, L., Niu, J.L.: Effectiveness correlations for heat and humidity transfer processes in an enthalpy exchanger with membrane cores. Heat Transf. 124, 922–929 (2002)CrossRefGoogle Scholar
  9. 9.
    Kadylak, D., Cave, P., Mérida, W.: Effectiveness correlations for heat and mass transfer in membrane humidifiers. Int. J. Heat Mass Transf. 52, 1504–1509 (2009)CrossRefGoogle Scholar
  10. 10.
    Sphaier, L.A., Worek, W.M.: Parametric analysis of heat and mass transfer regenerators using a generalized effectiveness-NTU method. Int. J. Heat Mass Transf. 52, 2265–2272 (2009)CrossRefGoogle Scholar
  11. 11.
    Hasan, A.: Going below the wet-bulb temperature by indirect evaporative cooling: analysis using a modified ε-NTU method. Appl. Energy 89(1), 237–245 (2012)CrossRefGoogle Scholar
  12. 12.
    Huang, X., Wang, T.: Air Conditioning Engineering. Machinery Industry Press, Beijing (2006). (in Chinese)Google Scholar
  13. 13.
    Yu, L.: Heat and mass transfer in air washer. J. China Text. Univ. 1, 26–34 (1987). (in Chinese)Google Scholar
  14. 14.
    Fouda, A., Melikyan, Z.: A simplified model for analysis of heat and mass transfer in a direct evaporative cooler. Appl. Therm. Eng. 31, 932–936 (2011)CrossRefGoogle Scholar
  15. 15.
    Zhao, Y.: Study on the influence mechanism of crosswind on heat and mass transfer of natural ventilation countercurrent wet cooling tower. Shandong University, Jinan (2009). (in Chinese)Google Scholar
  16. 16.
    Mcquistion, E.C., Parker, J.D.: Heating Ventilation and Air Conditioning Analysis and Design, p. 441. Wiley, Hoboken (1977)Google Scholar
  17. 17.
    Yin, P.: An approach to the thermodynamic calculation of air washer. J. Refrig. 4, 49–55 (1987). (in Chinese)Google Scholar
  18. 18.
    Zhang, Y., Zhu, Y., Jiang, Y.: Theoretical analysis and modeling of overall heat transfer of air handling unit by using spraying water. J. Tsinghua Univ. (Sci. Technol.) 39(10), 35–38 (1999). (in Chinese)Google Scholar
  19. 19.
    Muangnoi, T., Asvapoositkul, W., Wongwises, S.: An exergy analysis on the performance of a counter flow wet cooling tower. Appl. Therm. Eng. 27(56), 910–917 (2006)Google Scholar
  20. 20.
    Yaozhen, S.: Model calculation and analysis of heat and mass transfer of air and water in a direct contact forward flow. Trans. Chin. Soc. Agric. Eng. 22(1), 6–10 (2006). (in Chinese)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Lingling Bao
    • 1
    Email author
  • Yang Zhao
    • 1
  • Xiu Su
    • 1
  • Ziyong Wang
    • 1
  • Yajing Rong
    • 1
  1. 1.College of Energy and Environmental EngineeringHebei University of EngineeringHandanChina

Personalised recommendations