New Approach for Refined Efficiency Estimation of Air Exchange Organization

  • Authors

    • Volodymyr Dovhaliuk
    • Viktor Mileikovskyi
    • . .
    2018-06-20
    https://doi.org/10.14419/ijet.v7i3.2.14596
  • air conditioning, air exchange, energy efficiency, turbulence intensity, ventilation.

  • Abstract

    In the modern conditions, energy efficiency is one of the most important world problems. One of the important factors influencing the overall energy efficiency of buildings is air distribution in rooms. Literature review shows different options of efficiency estimation of air exchange with significant limitations. Some of them have non-obvious physical meaning. Certain of them do not take into account possible room zoning. Consideration of turbulence intensity in the efficiency estimation was not found. In this work, we propose an approach to estimate the air exchange efficiency in different kind of rooms. It is a relation of minimum room demands and inlet air potentials. Additional definitions are introduced for the parameters and demands estimation. The mechanical energy of the air is used for the estimation, which includes the energy of averaged motion and turbulent pulsation. Special approach is offered for turbulence intensity computation for energy calculations. The example of efficiency estimation of air exchange in a museum room with constant air volume system of air conditioning is solved.

     

     

  • References

    1. [1] Grimitlin M. I., Indoor air distribution, ÐVОK-Sеvеrо-Zаpаd, (2004), 320 p. (in Russian).

      [2] Pozin G. М., “New Approach for Evaluation of Air-Exchange Efficiency, Modern problems of science and education, No. 4, (2012), available online: URL: http://www.science-education.ru/ru/article/view?id=657, last visit: 29.03.2018 (in Russian).

      [3] CSN EN 15242 Ventilation for buildings – Calculation methods for determination of air flow rates in buildings including infiltration, CEN, (2007), 54 p.

      [4] Nassif N., Kaji S. & Sabourin R., “Ventilation Control Strategy Using the Supply CO2 Concentration Setpointâ€, HVAC&R Research, Vol. 11, No. 2, (2005), pp. 239-262, available online: https://en.etsmtl.ca/ETS/media/ImagesETS/Labo/LIVIA/Publications/2005/Nassif_ASHRAE_2005b.pdf

      [5] ANSI/ASHRAE Standard 62.1-2016. Ventilation for Acceptable Indoor Air Quality, ASHRAE, (2016), 58 p.

      [6] Korbut V., · Voznyak O., · Myroniuk K., · Sukholova I., · Kapalo K. “Examining a device for air distribution by the interaction of counter non-coaxial jets under alternating modeâ€, Eastern-European Journal of Enterprise Technologies, Vol. 2, No. 8(86), (2017), pp. 30-38, https://doi.org/10.15587/1729-4061.2017.96774

      [7] Conceição E. Z. E., Santiago C. I. M., Lúcio Mª. M. J. R., Awbi H. B. “Predicting the Air Quality, Thermal Comfort and Draught Risk for a Virtual Classroom with Desk-Type Personalized Ventilation Systemsâ€, Buildings, Vol. 8, Iss. 2, No. 35 (2018), 22 p., https://doi.org/doi:10.3390/buildings8020035

      [8] Yang Lv, Haifeng W., Shanshan W. “The transmission characteristics of indoor particles under different ventilation conditionsâ€, E3S Web of Conferences, Vol. 22, No. 00108 (2017), https://doi.org/doi:10.1051/e3sconf/20172200108

      [9] Gumen O, Dovhaliuk V., Mileikovskyi V., Lebedeva O., Dziubenko V., “Geometric Analysis of Turbulent Macrostructure in Jets Laid on Flat Surfaces for Turbulence Intensity Calculationâ€, FME Transactions, Vol.45, No.2, (2017), pp: 236-242, doi:10.5937/fmet1702236G

      [10] Gumen O., Dovhaliuk V., Mileikovskyi V. (2016) “Simplified Simulation of Flows with Turbulent Macrostructureâ€, The 4th International Technical Conference on Hydraulic Engineering (CHE 2016). 16-17 July 2016, Hong Kong. Proceedings, (2016), pp:251-260.

      [11] Dovhaliuk V., Gumen O, Mileikovskyi V., Dziubenko V. (2018), Simplified Analysis of Turbulence Intensity in Curvilinear Wall Jets. FME Transactions, Vol.46, No.2, pp:177-182, doi:10.5937/fmet1802177D

      [12] Brelih N. (Editor), Seppänen O., Berthilsson T., Maripuu M-L., Lamy H.,. Borre A. V., Design of energy efficient ventilation and air-conditioning systems. REHVA Guidebook, No. 17, REHVA, (2012), 102 p.

      [13] Guangyu C., Hazim A., Runming Y., Yunqing F., Kai S., Kosonen R., Jianshun (Jensen) Z. “A review of the performance of different ventilation and airflow distribution systems in buildingsâ€, Building and Environment, No. 73 (2014) pp. 171-186, https://doi.org/10.1016/j.buildenv.2013.12.009

      [14] DBN V.2.5-67:2013 Opalennia, ventyliatsiia ta kondytsionuvannia, Ukrarkhbudinform, (2013), 141 р. (in Ukrainian).

      [15] Dovhaliuk V. B. Aerodynamics of ventilation: Textbook, Ukrheliotеkh, (2015), 365 p. (in Ukrainian).

      [16] EN ISO 7730:2005 Ergonomics of the thermal environment – Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria, Third Edition 2015-11-15, ISO, (2005), 49 p.

      [17] ANSI/ASHRAE Standard 55-2013. Thermal Environmental Conditions for Human Occupancy, ASHRAE, (2013), 56 p.

  • Downloads

  • How to Cite

    Dovhaliuk, V., Mileikovskyi, V., & ., . (2018). New Approach for Refined Efficiency Estimation of Air Exchange Organization. International Journal of Engineering & Technology, 7(3.2), 591-596. https://doi.org/10.14419/ijet.v7i3.2.14596

    Received date: 2018-06-23

    Accepted date: 2018-06-23

    Published date: 2018-06-20