Evaluation and optimization of solar desiccant wheel performance

Ahmed, Mohamed H.; Kattab, N.M.; Fouad, Moharram

doi:10.1016/j.renene.2004.04.010

Cited by 85 publications

(29 citation statements)

References 9 publications

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“…These systems typically supply super-cooled air to each zone and reheat the air to the appropriate temperature before it reaches the space [16,17]. By cooling the air below the dew point, moisture is removed and appropriate relative humidity is supplied to each zone.…”

Section: Desiccant Dehumidificationmentioning

confidence: 99%

Simulated hygrothermal performance of a desiccant-assisted hybrid air/water conditioning system in a mixed humid climate under dynamic load

O’Kelly

Walter

Rowland

2015

Energy and Buildings

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Section: Desiccant Dehumidificationmentioning

confidence: 99%

Simulated hygrothermal performance of a desiccant-assisted hybrid air/water conditioning system in a mixed humid climate under dynamic load

O’Kelly

Walter

Rowland

2015

Energy and Buildings

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“…Therefore, the LDCS can not only make use of renewable energy, but also meet people's increasing pursuit of indoor thermal comfort more efficiently. As a result, it draws increasing attention worldwide in recent years [1][2][3][4]. Compared with the intense attention on the absorber [3,4], the regenerator has relatively limited research.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, it draws increasing attention worldwide in recent years [1][2][3][4]. Compared with the intense attention on the absorber [3,4], the regenerator has relatively limited research. Even though these two components have similar working principle, many differences exist in the actual operating conditions, such as the concentration of solution, working temperature, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Regeneration and Corrosion Characteristics of an Anodized Aluminum Plate Regenerator

et al. 2018

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Abstract:The traditional vapor compression cooling system (VCS) has been criticized for its heavy reliance on electricity consumption and limited control ability of humidity. Compared with the VCS, the liquid desiccant cooling system (LDCS) is more efficient by handling the sensible and latent load separately. The present study investigated the regeneration and corrosion characteristics of an anodized aluminum plate regenerator for the first time. Comparative tests were conducted to present the regeneration and corrosion characteristics of the normal and anodized regenerator. The influence of internal heating on the regeneration performance was also identified. The results showed that the corrosion rate was reduced from 0.0005218 mm/year for normal aluminum to 0.000011 m/year for anodized one under the same operating conditions. However, pitting corrosion was observed at operating conditions with high solution temperature, as the anodized layer of anodized aluminum was damaged due to the high temperature. Compared with the normal aluminum regenerator, the anodized one had an average enhancement of 24% and 23.7% in terms of regeneration rate and effectiveness, respectively. It was attributed to the increment of surface energy from 26.4 mN/m for normal aluminum to 47.6 mN/m for anodized plate. Besides, it was found that, compared with adiabatic one, the internally-heated regenerator improved the regeneration rate by 6.0%~38% and the regeneration effectiveness by 6.3%~32% depending on the operating conditions. The advantage of present study is that it can guide the design of anodized aluminum regenerator for LDCS.

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“…To control the air humidity, solid desiccants such as silica gel, zeolites, activated alumina hygroscopic salts are generally used. Among these, silica gel is commonly applied in the field of airconditioning, drying and storage of food grains owing to its thermal stability, higher water vapor adsorption capacity, and lower regeneration temperature [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers studied the adsorption and the regeneration performances of various shapes of solid desiccant [1][2][3][4]. Ismail et al [5] developed a fixed-bed device to reduce the enthalpy of air used for grain aeration.…”

Section: Introductionmentioning

confidence: 99%

Effect of internal cooling/heating coil on adsorption/regeneration of solid desiccant tray for controlling air humidity

Hung

Nuntaphan

Kiatsiriroat

2008

Int. J. Energy Res.

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SUMMARYThermal performances of solid desiccant tray having internal cooling/heating coil for air humidity adsorption and desiccant regeneration are investigated. Three units of desiccant tray each of 48 cm Â 48 cm cross-sectional area and 2.5 cm thickness filled with silica gel are tested in a wind tunnel. For adsorption process, an air stream is flowing through the desiccant trays and the air humidity is captured by the silica gel. Approximately 10-40% of air humidity could be adsorbed more in case of the internal cooling. Besides, the outlet air temperature increases only slightly. In regeneration process, a hot air stream is used to repel the moisture in the silica gel. With the internal heating, the regeneration time is shorter compared with that without internal water heating. In addition, a correlation for calculating the adsorption/regeneration performance of the silica gel trays is developed and the results from the model agree well with the experimental data.

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Evaluation and optimization of solar desiccant wheel performance

Cited by 85 publications

References 9 publications

Simulated hygrothermal performance of a desiccant-assisted hybrid air/water conditioning system in a mixed humid climate under dynamic load

Simulated hygrothermal performance of a desiccant-assisted hybrid air/water conditioning system in a mixed humid climate under dynamic load

Investigation on the Regeneration and Corrosion Characteristics of an Anodized Aluminum Plate Regenerator

Effect of internal cooling/heating coil on adsorption/regeneration of solid desiccant tray for controlling air humidity

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