Examining a device for air distribution by the interaction of counter non-coaxial jets under alternating mode

Korbut, V.; Voznyak, Orest; Myroniuk, Khrystyna; Sukholova, Iryna; Kapalo, Peter

doi:10.15587/1729-4061.2017.96774

Cited by 14 publications

(8 citation statements)

References 2 publications

(10 reference statements)

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“…The physical meaning of E z is an estimation of air share passed from air distributors to target zones. Today, there are too many different air distribution possibilities, such as [6][7][8], which require high amount of reference data. The data may be regularly widen because of the air distribution development.…”

Section: Literature Reviewmentioning

confidence: 99%

New Approach for Refined Efficiency Estimation of Air Exchange Organization

Dovhaliuk¹,

Mileikovskyi²,

2018

IJET

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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.

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Section: Literature Reviewmentioning

confidence: 99%

New Approach for Refined Efficiency Estimation of Air Exchange Organization

Dovhaliuk¹,

Mileikovskyi²,

2018

IJET

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“…Heat utilization of exhaust air by recuperators [2,7,37] is often used. It is obvious that creation of a dynamic indoor climate is also advisable in the closed spaces [20,38]. It means periodic change of air temperature or air velocity in the working area of the room.…”

Section: Introductionmentioning

confidence: 99%

“…An adequate choice of air distribution devices [3,20,35] with the appropriate coefficient of air jet velocity attenuation and also achieving proper air jet long range in a premise is mean for overcoming damage to the ventilation system of both types.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of three types damages to the ventilation system

Voznyak¹,

Spodyniuk²,

Sukholova³

et al. 2022

Diagnostyka

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The article is devoted to solving of urgent problem to eliminate damage in ventilation system. That is caused by non-adequate long range, stagnant unventilated areas in the room existance and high noise level in the premises at air distribution by swirled air flow, compact air jet, flat air stream and rectangular air jet. A noise level of air supply with swirled air flow, compact air jet, flat air jet and rectangular air stream in the room has been investigated. It is shown that in order to achieve the maximum noise level decreasing it is necessary to ensure its supply by jets, which less intensively attenuate before entering the premise working area. Results of the experimental research are presented as graphical and analytical dependences. The acoustic properties of the swirled air flow, compact air jet, flat air stream and rectangular air jet have been investigated and means of situation improving have been determined. The results of experimental research of air supply to the room are presented. It is established that with the increase of the angle of swirling plates inclination and ratio of the slit sides the air jets noise level decreases.

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“…A progressive direction in overcoming damage to the ventilation system of both types is an adequate choice of air distribution devices [3,23,34] with the appropriate coefficients of attenuation of air jet velocity and temperature and also achieving proper air jet long range in a premise. Attention should be paid to the distribution of air by compact, flat, rectangular jets and swirled air streams.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of damage to the ventilation system

Spodyniuk¹,

Voznyak²,

Sukholova³

et al. 2021

Diagnostyka

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The article is devoted to solving of urgent problem to eliminate damages of two types in ventilation systems for air distribution efficiency increasing in the premises by swirled air flow, compact air jet, flat air stream and rectangular air jet. A mathematical model of air supply with swirled air flow, compact air jet, flat air jet and rectangular air stream in the room has been developed. It is shown that in order to achieve the maximum efficiency of air distribution it is necessary to ensure its supply by jets. Graphical and analytical dependences on the basis of the conducted experimental research are presented. Parameters of swirled air flow, compact air jet, flat air stream and rectangular air jet during the formation of a comfortable indoor climate are determined. The results of experimental studies of air supply to the room by the air distribution devices, which form a swirled air flow, compact air stream, flat air flow and rectangular air jet with adequate turbulence and long range of the supply air flow, are presented. It is established that with the increase of the angle of swirling plates inclination and ratio of the slit sides the air jets long range increases.

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Examining a device for air distribution by the interaction of counter non-coaxial jets under alternating mode

Cited by 14 publications

References 2 publications

New Approach for Refined Efficiency Estimation of Air Exchange Organization

New Approach for Refined Efficiency Estimation of Air Exchange Organization

Diagnosis of three types damages to the ventilation system

Diagnosis of damage to the ventilation system

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