Computational Modeling of the Temperature Regime in a Room with a Two-Panel Radiator

Басок, Б. І.; Davydenko, B. V.; Farenuyk, G. G.; Гончарук, С.М.

doi:10.1007/s10891-014-1147-5

Cited by 15 publications

(5 citation statements)

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“…One of the important tasks of room ventilation is the effective organization of air exchange [1] and in particular air distribution [2]. It should provide the air normalized temperature [3], air velocity [4,5], concentration of CO2 [6,7] and other pollutants [8,9] in a room, noise level [10], scent, etc. However, the air stream velocity often exceeds the normalized values.…”

Section: Introductionmentioning

confidence: 99%

Analysis of air jets velocity attenuation at special initial conditions

Voznyak¹,

Spodyniuk²,

Savchenko³

et al. 2022

Diagnostyka

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The article is devoted to solving the significant problem of efficiency increasing of air distribution in the premise by swirl air jet. The aim of the article is to decrease coefficient of velocity attenuation due to intensification of initial turbulence of different air streams leakage from the air distributor and to obtain of analytical equations for calculation of air distribution in a room to ensure the normative indoor air parameters. Effect of flow twisting results in a reduction of the velocity attenuation coefficient by 2.4 times. The regression analysis testified that the attenuation coefficient of the swirl air jet is more affected by the angle of the twisting plates inclination and less affected by the angle of change of the air flow direction. The attenuation coefficient of all types of rectangular air jets is more influenced by the the ratio of the sides of slit b/l and the angle of change of the air flow direction is also less affected. To minimize the attenuation factor, it is effective to use air distributors at smaller swivel plates inclination angles for swirl air jets and a smaller slit size ratio for all types of rectangular air jets.

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Section: Introductionmentioning

confidence: 99%

Analysis of air jets velocity attenuation at special initial conditions

Voznyak¹,

Spodyniuk²,

Savchenko³

et al. 2022

Diagnostyka

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“…Important problems of room ventilation are to ensure both effective organization of air exchange and air distribution [10]. So, the requirements of ensuring of the normalized air velocity and temperature in the premise working area [4,13,14] and energy efficiency [1,28,38,41] should be followed. Heat utilization of exhaust air by recuperators [2,7,37] is often used.…”

Section: Introductionmentioning

confidence: 99%

“…Analysis of literary data has shown that a comfortable state of a person in a premise depends on many factors: air temperature [4,24], air velocity [13], humidity, temperature of the premise surfaces, noise level, thermal resistance of clothing, concentration of CO2 in the premise [15,16], etc. Air distribution schemes are considered and analyzed for being most appropriate to be used indoors, taking into account first of all the attenuation of inflow air jets [6,26,29].…”

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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“…One of the important tasks for arrangement of premises ventilation is creation of the effective organization of air exchange and in particular air distribution (Dovhaliuk, 2018). At the same time, both the normalized air velocity (Tkachenko, 2020) and the normalized temperature (Basok, 2014;Bilous, 2016) in the working area must be ensured.…”

Section: Introductionmentioning

confidence: 99%

Enhancing of energetic and economic efficiency of air distribution by swirled-compact air jets

Zhelykh

Voznyak

Yurkevych

et al. 2021

Production Engineering Archives

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The article is devoted to solving the urgent task of increasing the efficiency of air distribution by swirled-compact air jets to ensure the normative parameters of indoor air. The dynamic parameters of the swirled-compact air jet during its leakage in the alternating mode and the formation of a dynamic indoor climate in the room are determined. For improvement of comfortable conditions in the room and design of energy saving circuits of air distribution it is suggested to use swirled-compact air jets, which flow from the inflow and exhaust heat recuperators with heat recovery of the exhaust air. An energy audit of the ventilation system reconstruction with a recuperator using was carried out. The method of taking into account the fact of application of several measures, which cannot be carried out simultaneously, and discount rate dynamics is proposed.

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Computational Modeling of the Temperature Regime in a Room with a Two-Panel Radiator

Cited by 15 publications

References 0 publications

Analysis of air jets velocity attenuation at special initial conditions

Analysis of air jets velocity attenuation at special initial conditions

Diagnosis of three types damages to the ventilation system

Enhancing of energetic and economic efficiency of air distribution by swirled-compact air jets

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