Performance enhancement of a desiccant evaporative cooling system using direct/indirect evaporative cooler

Elgendy, E.; Mostafa, A.; Fatouh, M.

doi:10.1016/j.ijrefrig.2014.12.009

Cited by 47 publications

(19 citation statements)

References 14 publications

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“…El-Agouz and Kabeel [5] evaluated performance of a hybrid system integrating a desiccant wheel, solar collectors and geothermal energy, showing the effects of different climates. Elgendy et al [6] discussed the effect of different evaporative cooling arrangements in desiccant wheel based AHU. Liu et al [7] evaluated the integration of a desiccant wheel with existing technologies and discussed the importance of operating conditions on system performance.…”

Section: Introductionmentioning

confidence: 99%

Desiccant wheels for air humidification: An experimental and numerical analysis

Antonellis

Intini

Joppolo

et al. 2015

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 99%

Desiccant wheels for air humidification: An experimental and numerical analysis

Antonellis

Intini

Joppolo

et al. 2015

Energy Conversion and Management

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“…A review of the literature reveals that to date research has targeted cold air production [36][37][38], whereas production of the cold water involved has been neither assessed nor experimentally validated. As cooling the water mass narrows, the gap between energy production and use, optimizing evaporation, it is an issue worth exploring.…”

Section: Evaporative Coolingmentioning

confidence: 99%

Evaporative Mist Cooling as Heat Dissipation Technique: Experimental Assessment and Modelling

et al. 2020

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The severity of extreme weather conditions brought on by climate change are conditioning quality of life, economic development, and well-being in today’s cities. Conventional measures have been shown to be insufficient for tackling climate change and must be supplemented with ecofriendly approaches. Hence, the scientific community’s endeavor to develop natural cooling techniques that lower energy consumption while delivering satisfactory comfort levels. For its simplicity and low cost, evaporative cooling has gained in popularity in recent years. The substantial cooling power to be drawn from evaporative mist cooling, makes it an attractive alternative to conventional systems. Research conducted to date on the technique has focused on producing cold air, whilst cooling the water involved has been neither assessed nor experimentally validated. No readily applicable simplified model for the system able to use operating parameters as input variables has been defined either. The present study consequently aimed to experimentally assess the cooling power of the evaporation of sprayed water and experimentally validate a simplified model to assess and design such systems. The findings confirmed the cooling power of the technique, with declines in water temperature of up to 6 °C, and with it the promise afforded by this natural air conditioning method. Finally, simplified model developed allows to evaluate this technique like a conventional system for producing fresh water.

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“…Although desiccant wheel is a key component of desiccant evaporative cooling (DEC) system, but analysis of complete cooling system is often focused instead of comprehensive analysis of individual desiccant component [18][19][20][21][22][23]. Furthermore, precise prediction of desiccant wheel performance in transient energy system simulations for DEC systems is also of prime importance.…”

Section: --------------mentioning

confidence: 99%

Experimental and model based performance investigation of a solid desiccant wheel dehumidifier in subtropical climate

Chaudhary¹,

Ali²,

Ashiq³

et al. 2019

THERM SCI

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This paper presents real time performance analysis of a silica gel based desiccant wheel dehumidifier. Thermodynamic model is also validated through comparison under a wide range of operating conditions for subtropical climate conditions. Initially, a mathematical model is developed by using various set of equations for desiccant wheel dehumidifier in engineering equation solver. Afterwards, a parametric analysis of the system is performed including various design and climate parameters such as: inlet air humidity ratio, inlet air temperature, regeneration inlet humidity ratio, regeneration temperature, and rotation speed of the wheel. Then, an experimental setup of the system is established in Taxila Pakistan for the real-time performance assessment. The results revealed that the optimal rotation speed of desiccant wheel ranged from 15-17 rph. The maximum model based and experimental effectiveness is 0.45 and 0.43, respectively at regeneration temperature of 80 °C. The maximum and minimum root mean square error values for effectiveness are 3.2% and 2.1%, respectively. Thus, the comparison between experimental and model results showed a good agreement.

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Performance enhancement of a desiccant evaporative cooling system using direct/indirect evaporative cooler

Cited by 47 publications

References 14 publications

Desiccant wheels for air humidification: An experimental and numerical analysis

Desiccant wheels for air humidification: An experimental and numerical analysis

Evaporative Mist Cooling as Heat Dissipation Technique: Experimental Assessment and Modelling

Experimental and model based performance investigation of a solid desiccant wheel dehumidifier in subtropical climate

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