Theoretical and experimental investigation on the transient coupled heat and mass transfer in a radial flow desiccant packed bed

Hamed, Ahmed M.; Abd-Elrahman, Walaa; El-Emam, Salah H.; Awad, M. M.

doi:10.1016/j.enconman.2012.07.025

Cited by 27 publications

(11 citation statements)

References 15 publications

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“…The rapid absorption of desiccant at an initial period was because vapor pressure on the desiccant surface is less than the vapor pressure of experimental air. [13] The vapor pressure difference between desiccant surface and air steadily reduced with time. The maximum dehumidification rate was found to be 21.06 g water/min during the first period and decreased continually with time as shown in Figure 3.…”

Section: Dehumidification Processmentioning

confidence: 98%

Evaluation of cyclic efficiency of multilayer desiccant bed column

2020

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The main objective was to evaluate cyclic efficiency of a multilayer desiccant bed column. The experimental setup consisted of an air humidifier unit, a heating unit for regeneration, and the desiccant bed column with 15 layers. An airflow rate of 2.4 m3/min with the humidity ratio of 20 g water/kg dry air was used in this study. The results showed that the highest dehumidification rate of 21 g water/min was found at the beginning of the dehumidification process. During the regeneration process, the highest regeneration rate was 39 g water/min when regenerating the desiccant at a temperature of 90°C. For cyclic operation process, the cyclic efficiencies were 11% and 7% at the regeneration temperatures of 70°C and 90°C, respectively. The cyclic efficiency was dependent on the regeneration temperature.

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Section: Dehumidification Processmentioning

confidence: 98%

Evaluation of cyclic efficiency of multilayer desiccant bed column

2020

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“…It has a surface area of 150-500 m 2 /g with pore sizes ranging between 1.5 and 6 nm and heat of adsorption nearly equals 3000 kJ/kg [23]. Many times it has been used for desiccant dehumidification and gives interesting results [32][33][34].…”

Section: Activated Aluminamentioning

confidence: 99%

An overview of solid desiccant dehumidification and air conditioning systems

Sultan

El-Sharkawy

Miyazaki

et al. 2015

Renewable and Sustainable Energy Reviews

212

111

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“…Water sorption analysis of clinoptilolite shows that less dehumidification capability is compared to silica gel and alumina [49]. Activated alumina has shown satisfactory results when used for desiccant dehumidification [50]. Furthermore, use of liquid desiccants, for example, lithium chloride, lithium bromide, and calcium chloride results in good COP of desiccant air conditioning because it regenerates at lower temperature [51].…”

Section: Desiccant Materialsmentioning

confidence: 99%

Renewable Energy Application for Solar Air Conditioning

Kousar

Ali

Sheikh

et al. 2020

Renewable Energy - Resources, Challenges and Applications

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This chapter presents an overview of various solar air conditioning technologies such as solar PV, absorption, desiccant, and adsorption cooling systems. It includes feasibility and comparative analysis of numerous standalone and hybrid configurations of solar cooling systems, which were investigated in past. In addition, recent developments in use of solar energy as a regeneration source to dehumidify desiccant wheel in different applications are also discussed. Details of system technologies and climate-based performance comparison in terms of various performance factors, for example, COP th ,Q latent ,Q sensible , COP solar , SF, PES, and Ƞ collector for solar-assisted configurations are highlighted. It is observed that hybridization of solar solid desiccant system results more efficient and cost-effective cooling system as latent and sensible loads are treated independently, especially when regeneration process of desiccant wheel is integrated with solar energy. This review will help to explore further improvements in solar-assisted cooling systems.

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Theoretical and experimental investigation on the transient coupled heat and mass transfer in a radial flow desiccant packed bed

Cited by 27 publications

References 15 publications

Evaluation of cyclic efficiency of multilayer desiccant bed column

Evaluation of cyclic efficiency of multilayer desiccant bed column

An overview of solid desiccant dehumidification and air conditioning systems

Renewable Energy Application for Solar Air Conditioning

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