Journal of the Architectural Institute of Korea Planning & Design (대한건축학회논문집:계획계)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

A Comparison of Air Flow Characteristics And Power Consumption According to Shape Changes of a Jet Fan Nozzle

제트팬 노즐 형상 변화에 따른 기류 및 전력 사용량 특성비교

  • 권혁민 (영남대학교 일반대학원 건축학과) ;
  • 김금희 (영남대학교 일반대학원 건축학과) ;
  • 박제규 (영남대학교 일반대학원 건축학과) ;
  • 양정훈 (영남대학교 건축학부)
  • Received : 2016.06.02
  • Accepted : 2016.08.18
  • Published : 2016.08.30
⟨ Previous Next ⟩

Abstract

Recently, residents living in high-density residential zones have been ever increasing, with floor area ratios growing higher following the industrial development and the enhancement of our living standards. Consequently, there is an insufficient number parking spaces. In order to solve the lack of parking spaces an increasing number of underground parking lots are being constructed. Nowadays, jet fan ventilation systems utilizing the airflow induced by jet fans are being widely used for the ventilation of large areas such as underground parking lots and tunnels. The purpose of this actual study is to present a jet fan that is designed to reduce electric power consumption and carbon dioxide emissions through the enhancement of its performance. The airflow characteristics of a jet fan that is widely used for the ventilation of underground parking lots and large spaces were realized during the experiments performed in this study. In order to enhance the performance of the existing jet fan, alternative cases were fabricated and their airflow characteristics, etc. were measured. In addition, the power consumption for each case was also measured, thereby predicting the correct amount of carbon dioxide ($CO_2$) emissions. Case 1 (inside guide type) presented as an alternative for the basic case was found to be the most superior type. It was considered to be more effective when reducing the power consumption and carbon dioxide emissions by approximately 30% in comparison to the basic case. It is thought that a better performance than that of an existing jet fan can be realized by simply replacing its nozzle part with a new one.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. ASHRAE. (2005). ASHRAE Handbook: Fundamentals, American Society of Heating, Refrigerating and Air-Conditioning Engineers, chapter 33
  2. Lucy, B. Stephen, I., & Thomas, B. (2013). An empirical examination of the growing phenomenon of off-site residential car parking provision: The situation at UK airports. Transportation Research Part A: Policy and Practice, 54, 26-34. https://doi.org/10.1016/j.tra.2013.07.006
  3. Luciana, M. (2007). The Dutch sustainable building policy: A model for developing countries. Building and Environment, 42, 893-901. https://doi.org/10.1016/j.buildenv.2005.10.007
  4. Marta, G., Miquel, C., Santiago, G., Nuria, F., Xavier, R., & Alba, F. (2011). Assessing concerns of interested parties when predicting the significance of environmental impacts related to the construction process of residential buildings. Building and Environment, 46, 1023-1037. https://doi.org/10.1016/j.buildenv.2010.11.004
  5. Felix, C., & Alejandra, D. (2013). Case analysis of simultaneous concessions of parking meters and underground parking facilities. Transportation Research Part A. 49, 258-378.
  6. Ho, J.C., Xue, H., & Tay, K.L. (2004). A field study on determination of carbon monoxide level and thermal environment in an underground car park. Building and Environment, 39, 67-75. https://doi.org/10.1016/j.buildenv.2003.07.006
  7. Laurent, M., Radu, Z., & Dominique, D. (2012). Experimental assessment of the velocity and temperature distribution in an indoor displacement ventilation jet. Building and Environment, 47, 150-160. https://doi.org/10.1016/j.buildenv.2011.07.029
  8. Lu, S., Wang, Y.H., Zhang, R.F., & Zhang, H.P. (2011). Numerical Study on Impulse Ventilation for Smoke Control in an Underground Car Park. Procedia Engineering, 11, 369-378. https://doi.org/10.1016/j.proeng.2011.04.671
  9. Kim, K.H., Liu, J., Lee, J.H., Lim, Y.C., Oh, M.D., & Kim, J.P. (2002). Prediction of the Flow Characteristics of Jet Fan in a Confined Space. Korean Journal Of Air-Conditioning and Refrigeration Engineering, 14(3), 206-214
  10. Feng, W., Mingnian, W., Heb, S., Jisheng, Z., & Yuanye, D. (2015). Computational study of effects of jet fans on the ventilation of a highway curved tunnel. Tunnelling and Underground Space Technology, 25, 382-390.
  11. Chung, K.C., & Hsu, S.P. (2001). Effect of ventilation pattern on room air and contaminant distribution. Building and Environment, 36, 989-998. https://doi.org/10.1016/S0360-1323(00)00051-2
  12. Esmaeel, E., Alireza, D., Omid, A., Javad, M., & Goodarz, A. (2014). A numerical investigation into the performance of two types of jet fans in ventilation of an urban tunnel under traffic jam condition. Tunnelling and Underground Space Technology, 44, 56-67. https://doi.org/10.1016/j.tust.2014.07.005
  13. Marilena, M., & Giuseppe, R. (2014). Numerical comparison of performance between traditional and alternative jet fans in tiled tunnel in emergency ventilation. Tunnelling and Underground Space Technology, 42, 52-58. https://doi.org/10.1016/j.tust.2014.02.003
  14. Carine, H., Kamel, G., Nesreen, G., Walid, C., & Sorour, A. (2016). Ceiling personalized ventilation combined with desk fans for reduced direct and indirect cross-contamination and efficient use of office space. Energy Conversion and Management, 111, 158-173. https://doi.org/10.1016/j.enconman.2015.12.067
  15. Ryu, S.H., & Kim, S.D. (2011). An analysis on the optimal operation and economic feasibility of household fuelcell system for climate change. Korean Energy Economic Review, 10, 25-48.