Performance of an Adsorptive Heat-Moisture Regenerator Based on Silica Gel–Sodium Sulphate

Belyanovskaya, Elena; Rimár, Miroslav; Lytovchenko, Roman D.; Variny, Miroslav; Sukhyy, K.M.; Yeromin, Oleksandr; Sykhyy, Mikhailo P.; Prokopenko, Elena M.; Sukha, I.V.; Gubinskyi, Mikhailo V.; Kizek, Ján

doi:10.3390/su12145611

Cited by 6 publications

(12 citation statements)

References 34 publications

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“…The heat regeneration factor i.e. temperature efficiency factor is determined by the formula [13,14]:…”

Section: Fig 1 -Algorithm Of Calculating the Operating Parameters Of Adsorptive Regenerator [15]mentioning

confidence: 99%

“…Final temparatures of inflowed and outflowed air are described by thermal balance equations. The air volume which passed through the adsorbent layer during air-in or air-out modes, mass transfer coefficient, final values of absolute humidities, adsorption, heat of adsorption at the inflow or outflow are determined according to [13]. Then, summarized adsorption and time of saturation of adsorbent layer, ie time required to achieve maximal adsorption are calculated according to control-flow chart (Fig.…”

Section: Fig 1 -Algorithm Of Calculating the Operating Parameters Of Adsorptive Regenerator [15]mentioning

confidence: 99%

“…adsorption [11,12]. Mathematic model of performance of adsorptive heat-moisture regenerator suggested in [13,14] allows evaluating only temperature efficiency factor. Nevertheless, the energy performance of the heat-moisture regenerators is characterized not only by temperature efficiency factor, but humidity efficiency factor.…”

mentioning

confidence: 99%

“…The design of the adsorptive regeneration unit is presented in [13,14]. Length of laboratory prototype of heat regenerator is 0.6 m [15]. Composites 'silica gel -sodium acetate' or 'silica gel -sodium sulphate' were used.…”

mentioning

confidence: 99%

“…The device is operated in two-phase mode which involves alternating modes 'inflow' and 'outflow' [13,14]. When inflowed, ambient air is intaken by inner ventilator and got through the adsorbent layer into premise, air flow being heated and water excess being adsorbed.…”

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confidence: 99%

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Performance of adsorptive heat-moisture regenerator

Belyanovskaya

Lytovchenko

Sukhyy

et al. 2020

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The performance of the adsorptive heat-moisture regenerators based on the composite materials ‘silica gel - sodium acetate’ and ‘silica gel – sodium sulphate’ have been studied. The mathematical model and algorithm for determining the basic operating parameters of adsorptive regenerator in the housing and communal services sector have been further developed. The proposed algorithm which involves calculating the air volume passed through the adsorbent layer, the final absolute humidity of air near the outlet from the regenerator, the adsorption and the heat of adsorption during inflow and outflow, the final temperature of the external cold air, the air temperature after mixing the cold external air and the internal warm air in the room near the warm end of the regenerator during inflow, the air temperature after mixing of the cold external air and the warm exhaust air from the premise near the cold end of regenerator during outflow, determining the temperature and moisture efficiency factors has been completed by computing the Reynolds criterion of the adsorbent layer, the coefficient of the hydraulic resistance, the pressure loss, the consumed power of ventilator, summarized adsorption and time to achieve maximal adsorption . The adequacy of suggested mathematical model is confirmed by sufficient correlation of experimental data and calculation results with the proposed algorithm. The performance of adsorptive regenerators based on the adsorbents ‘silica gel – CH3COONa’ and ‘silica gel – Na2SO4’ has been simulated in the conditions of the conventional ventilation system of living quarters. The efficiency of adsorptive regenerators has been compared when ‘silica gel – CH3COONa’ and ‘silica gel – Na2SO4’ used. The correlation of design and efficiency of adsorptive regenerators is shown.

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“…The heat regeneration factor i.e. temperature efficiency factor is determined by the formula [13,14]:…”

Section: Fig 1 -Algorithm Of Calculating the Operating Parameters Of Adsorptive Regenerator [15]mentioning

confidence: 99%

Section: Fig 1 -Algorithm Of Calculating the Operating Parameters Of Adsorptive Regenerator [15]mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Performance of adsorptive heat-moisture regenerator

Belyanovskaya

Lytovchenko

Sukhyy

et al. 2020

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High Temperature Recuperators Cooperating with a Metallurgical Furnace for Heating the Air Under Pressure

2022

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In this paper, a system which uses hot furnace gases from a metallurgical process to heat compressed air necessary for another energy process is presented. The applied construction of the recuperator ensures high temperatures of the heated air needed for its utilisation in a separate process. Their levels depend on the processes in the reactor. A limitation to the construction of the installation is creep resistance of the materials used to assemble the recuperator modules which operate under high-temperature regimes. The well-prepared gas dynamic design of the recuperator ensured low pressure loss for the flowing air. Furnace gases leaving the recuperation system still have a high energy potential which can be utilised. As it is not possible to manage such large amounts of additional energy, the problem will be solved in the future when necessary.

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