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Please use this identifier to cite or link to this item: https://oldena.lpnu.ua/handle/ntb/55664
Title: Investigation of the return flow at the air distribution by swirl and flat laying air jets in small-sized premises
Other Titles: Дослідження зворотного потоку при подачі повітря закрученими та плоскими настильними струминами в приміщеннях невеликого об’єму
Authors: Возняк, О. Т.
Адамскі, М.
Капало, П.
Довбуш, О. М.
Сухолова, І. Є.
Voznyak, Orest
Adamski, Mariusz
Kapalo, Peter
Dovbush, Oleksandr
Sukholova, Iryna
Affiliation: Національний університет “Львівська політехніка”
Політехніка Бялостоцька
Кошицький технічний університет
LvivPolytechnicNationalUniversity
Politechnika Białostocka
Technical University of Košice
Bibliographic description (Ukraine): Investigation of the return flow at the air distribution by swirl and flat laying air jets in small-sized premises / Orest Voznyak, Mariusz Adamski, Peter Kapalo, Oleksandr Dovbush, Iryna Sukholova // Theory and Building Practice. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 2. — No 1. — P. 38–45.
Bibliographic description (International): Investigation of the return flow at the air distribution by swirl and flat laying air jets in small-sized premises / Orest Voznyak, Mariusz Adamski, Peter Kapalo, Oleksandr Dovbush, Iryna Sukholova // Theory and Building Practice. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 2. — No 1. — P. 38–45.
Is part of: Theory and Building Practice, 1 (2), 2020
Issue: 1
Issue Date: 10-Feb-2020
Publisher: Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Place of the edition/event: Львів
Lviv
DOI: doi.org/10.23939/jtbp2020.01.038
Keywords: повітророзподіл
вентиляція
витрата
швидкість повітря
вихровий повітряний потік
стиснений струмінь
настильний плоский повітряний струмінь
air distribution
ventilation
flow rate
air velocity
swirl air jet
compressed stream
tidal flat air jet
Number of pages: 8
Page range: 38-45
Start page: 38
End page: 45
Abstract: Наведено результати експериментальних досліджень зворотного потоку при розподілі повітря плоскими струменями. Наведено графічні та аналітичні залежності. Результатами досліджень доказано високу ефективність запропонованої схеми розподілу повітря в технологічних малогабаритних приміщеннях. Метою роботи є вивчення характеру розповсюдження вихрових та настильних струменів у обмеженому просторі виробничого приміщення малої висоти з наявністю в ньому технологічного обладнання та обслуговуючого персоналу, виявлення закономірностей розвитку повітряного припливного струменя у зворотному потоці та обґрунтування методики розрахунку. Встановлено кількісний опис характеристик та закономірностей розвитку вихрових та плоских настильних стиснених струменів у зворотному потоці. Отримано розрахункові залежності для визначення параметрів вихрових та настильних плоских струменів у зворотному потоці. Обґрунтовано, що ефективність застосування вихрових та плоских настильних струменів для подачі повітря в робочу зону технологічних приміщень є високою. Отримані результати дають змогу обчислити початкову швидкість стисненого потоку вихрового та припливного плоских настильних струменів у невеликих за розмірами виробничих приміщеннях з наявністю технологічного обладнання та обслуговуючого персоналу та визначити геометричні параметри пристрою розподілу повітря. Застосування розподілу повітря за ефектом настилання вихрових та плоских повітряних струменів дозволяє значно підвищити критерії продуктивності розподілу повітря при подачі великої кількості повітря до технологічних приміщень і тим самим зменшити витрату матеріалів у вентиляційній системі.
In this article the results of return flow at air distribution by flat laying jets experimental investigations are presented. The chart is composed, analytic equations are also obtained. By these results high efficiency of proposed air distribution scheme using in technological small-sized rooms is shown. The purpose of the work is to study the nature of the propagation of the swirl and flat flooring jets in a limited space of a production space of low height with the presence of technological equipment and maintenance personnel in it, to identify the patterns of development of the air tidal stream in the reverse flow and to justify the calculation methodology. The quantitative description of the characteristics and regularities of the development of the swirl and flat flooring compressed jets in the reverse flow is established. Calculation dependences were obtained for determining the parameters of the swirl and flat flooring compressed jets in the reverse flow. It is substantiated that the efficiency of the application of the swirl and flat flooring jets to supply air to the working area of the technological premises is high. The obtained results allow us to calculate the initial velocity of the swirl and tidal flat flooring compressed stream in a small-sized production rooms with the presence of technological equipment and service personnel and to determine the geometric parameters of the air distribution device. Application of air distribution with the use of the swirl and flat air jet laying effect allows to significantly increase the Air Distribution Performance Index criteria when supplying a big amount of air to the technological premises and thereby reducing the material consumption of the ventilation system.
URI: https://ena.lpnu.ua/handle/ntb/55664
Copyright owner: © Національний університет “Львівська політехніка”, 2020
© Voznyak O., Adamski M., Kapalo P., Dovbush O., Sukholova I., 2020
References (Ukraine): Bin Zhao, Xianting Li, & Qisen Yanb Zhao. (2003). A simplified system for indoor airflow simulation.
Building and Environment, Vol. 38, 543–552.
Chen, Q., & Srebric, J. (2001). Simplified diffuser boundary conditions for numerical room airflow models.
Final Report for ASHRAE RP-1009, Department of Architecture, Massachusetts Institute of Technology,
Cambridge, MA, 181 p.
Holyoake. (2006). Diffuser Performance Data Sheet, Ceiling Fixed Pattern Radial Swirl Diffuser, Model CFP
Radial Induction Swirl Diffuser.
Kapalo, P., Domnita, F., Bacotiu, C., & Podolak, M. (2018). The influence of occupants' body mass on
carbon dioxide mass flow rate inside a university classroom – case study. International Journal of Environmental
Health Research. Vol. 28, No. 4, 432–447. ISSN 0960-3123. doi:10.1080/09603123.2018.1483010.
Kapalo, P., Meciarova, L., Vilcekova, S., Burdova, E., Domnita, F., Bacotiu, & C. Peterfi, K. (2019).
Investigation of CO2 production depending on physical activity of students. International Journal of Environmental
Health Research. Vol. 29, Issue 1, 31–44. ISSN: 09603123. doi:10.1080/09603123.2018.1506570.
Kapalo, P., & Siroczki, P. (2014). Calculating the intensity of ventilation in classrooms on the basis of
measured concentrations of carbon dioxide in Slovakia – case study. International Journal of Ventilation. Vol. 13,
No. 3, 247–257. ISSN 1473-3315. WOS: 000348585900004.
Kapalo, P., Voznyak, O., Yurkevych, Yu., Myroniuk, Kh., & Sukholova, I. (2018). Ensuring comfort
microclimate in the classrooms under condition of the required air exchange, Eastern European Journal of
Enterprise Technologies, Vol. 5/10 (95), 6–14.
Kapalo, P., Vilcekova, S., & Voznyak, O. (2014). Using experimental measurements the concentrations of
carbon dioxide for determining the intensity of ventilation in the rooms, Chemical Engineering Transactions,
Vol. 39, 1789–1794. ISBN 978-88-95608-30-3; ISSN 2283-9216.
Kapalo, P., Vilceková, S., Domnita, F., Bacotiu, C., & Voznyak, O. (2017). Determining the Ventilation Rate
inside an Apartment House on the Basis of Measured Carbon Dioxide Concentrations – Case Study, The 10th
International Conference on Environmental Engineering, Vilnius, Lithuania, Selected Papers, 30–35.
Srebric, J., & Chen, Q. (2002). Simplified Numerical Models for Complex Air Supply Diffusers. HVAC&R
Research 8(3), 277–294.
Voznyak, O., Korbut, V., Davydenko, B., & Sukholova, I. (2019). Air distribution efficiency in a room by a
two-flow device, Proceedings of CEE, Advances in Resourse-saving Technologies and Materials in Civil and
Environmental Engineering, Springer, Vol. 47, 526–533.
Grimitlin, М. I. (2004). Air distribution in the rooms. Issue 3, adapted and supplemented, Мoscow: AVOK
North-West (in Russian)..
Gumen, O. M., Dovhaliuk, V. B., & Міleikovskyi, V. O. (2016). Determination of the intensity of turbulence
of streams with large-scale vortices on the basis of geometric and kinematic analysis of macrostructure. Proc. of
Lviv Polytechnic National University: The theory and building practice, No. 844, 76–83 (in Ukrainian).
Dovhaliuk, V. B., & Міleikovskyi, V. O. (2007). Efficiency of organization of air exchange in heat-stressed
premises in compressed conditions, Journal: Building of Ukraine, No. 3, 36. (in Ukrainian).
Dovhaliuk, V. B., & Міleikovskyi, V. O. (2008). Estimated model of non-isothermal stream, which is laid out
on a convex cylindrical surface. Ventilation, Illumination and Heat and Gas Supply: Scientific and Technical
Collection, Issue 12, Kyiv, KNUBA, 11–32 (in Ukrainian).
Dovhaliuk V. B., & Міleikovskyi V. O. (2013). Analytical studies of the macrostructure of jet currents for
calculating energy-efficient systems of air distribution. Energy efficiency in construction and architecture, Issue 4, 11–32 (in Ukrainian).
Voznyak, O., Myroniuk, K., & Dovbush, O. (2005). Relationship between a Person Heat Exchange and
Indoor Climate. Selected scientific Papers 10th Rzeszow-Lviv-Kosice Conference 2005 Supplementary Issue.
Technical University of Kosice. 148–152.
References (International): Bin Zhao, Xianting Li, & Qisen Yanb Zhao. (2003). A simplified system for indoor airflow simulation.
Building and Environment, Vol. 38, 543–552.
Chen, Q., & Srebric, J. (2001). Simplified diffuser boundary conditions for numerical room airflow models.
Final Report for ASHRAE RP-1009, Department of Architecture, Massachusetts Institute of Technology,
Cambridge, MA, 181 p.
Holyoake. (2006). Diffuser Performance Data Sheet, Ceiling Fixed Pattern Radial Swirl Diffuser, Model CFP
Radial Induction Swirl Diffuser.
Kapalo, P., Domnita, F., Bacotiu, C., & Podolak, M. (2018). The influence of occupants' body mass on
carbon dioxide mass flow rate inside a university classroom – case study. International Journal of Environmental
Health Research. Vol. 28, No. 4, 432–447. ISSN 0960-3123. doi:10.1080/09603123.2018.1483010.
Kapalo, P., Meciarova, L., Vilcekova, S., Burdova, E., Domnita, F., Bacotiu, & C. Peterfi, K. (2019).
Investigation of CO2 production depending on physical activity of students. International Journal of Environmental
Health Research. Vol. 29, Issue 1, 31–44. ISSN: 09603123. doi:10.1080/09603123.2018.1506570.
Kapalo, P., & Siroczki, P. (2014). Calculating the intensity of ventilation in classrooms on the basis of
measured concentrations of carbon dioxide in Slovakia – case study. International Journal of Ventilation. Vol. 13,
No. 3, 247–257. ISSN 1473-3315. WOS: 000348585900004.
Kapalo, P., Voznyak, O., Yurkevych, Yu., Myroniuk, Kh., & Sukholova, I. (2018). Ensuring comfort
microclimate in the classrooms under condition of the required air exchange, Eastern European Journal of
Enterprise Technologies, Vol. 5/10 (95), 6–14.
Kapalo, P., Vilcekova, S., & Voznyak, O. (2014). Using experimental measurements the concentrations of
carbon dioxide for determining the intensity of ventilation in the rooms, Chemical Engineering Transactions,
Vol. 39, 1789–1794. ISBN 978-88-95608-30-3; ISSN 2283-9216.
Kapalo, P., Vilceková, S., Domnita, F., Bacotiu, C., & Voznyak, O. (2017). Determining the Ventilation Rate
inside an Apartment House on the Basis of Measured Carbon Dioxide Concentrations – Case Study, The 10th
International Conference on Environmental Engineering, Vilnius, Lithuania, Selected Papers, 30–35.
Srebric, J., & Chen, Q. (2002). Simplified Numerical Models for Complex Air Supply Diffusers. HVAC&R
Research 8(3), 277–294.
Voznyak, O., Korbut, V., Davydenko, B., & Sukholova, I. (2019). Air distribution efficiency in a room by a
two-flow device, Proceedings of CEE, Advances in Resourse-saving Technologies and Materials in Civil and
Environmental Engineering, Springer, Vol. 47, 526–533.
Grimitlin, M. I. (2004). Air distribution in the rooms. Issue 3, adapted and supplemented, Moscow: AVOK
North-West (in Russian)..
Gumen, O. M., Dovhaliuk, V. B., & Mileikovskyi, V. O. (2016). Determination of the intensity of turbulence
of streams with large-scale vortices on the basis of geometric and kinematic analysis of macrostructure. Proc. of
Lviv Polytechnic National University: The theory and building practice, No. 844, 76–83 (in Ukrainian).
Dovhaliuk, V. B., & Mileikovskyi, V. O. (2007). Efficiency of organization of air exchange in heat-stressed
premises in compressed conditions, Journal: Building of Ukraine, No. 3, 36. (in Ukrainian).
Dovhaliuk, V. B., & Mileikovskyi, V. O. (2008). Estimated model of non-isothermal stream, which is laid out
on a convex cylindrical surface. Ventilation, Illumination and Heat and Gas Supply: Scientific and Technical
Collection, Issue 12, Kyiv, KNUBA, 11–32 (in Ukrainian).
Dovhaliuk V. B., & Mileikovskyi V. O. (2013). Analytical studies of the macrostructure of jet currents for
calculating energy-efficient systems of air distribution. Energy efficiency in construction and architecture, Issue 4, 11–32 (in Ukrainian).
Voznyak, O., Myroniuk, K., & Dovbush, O. (2005). Relationship between a Person Heat Exchange and
Indoor Climate. Selected scientific Papers 10th Rzeszow-Lviv-Kosice Conference 2005 Supplementary Issue.
Technical University of Kosice. 148–152.
Content type: Article
Appears in Collections:Theory and Building Practice. – 2020. – Vol. 2, No. 1

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