Desiccant wheels for air humidification: An experimental and numerical analysis

Antonellis, Stefano De; Intini, Manuel; Joppolo, Cesare Maria; Molinaroli, Luca; Romano, Francesco

doi:10.1016/j.enconman.2015.09.034

Cited by 40 publications

(11 citation statements)

References 21 publications

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“…Measurements have been carried out in representative working conditions of the investigated drying room, which are different from the ones of conventional DEC cycles for air conditioning purposes. -It has been verified that numerical results of the phenomenological desiccant wheel model, previously developed (De Antonellis et al, 2010) and calibrated (De Antonellis et al, 2015b), were in agreement with the experimental data collected in this work. -Five different control strategies have been defined.…”

Section: Methodssupporting

confidence: 83%

“…The test rig has been deeply described in previous works of the authors (De Antonellis et al, 2015a, 2015b. Air temperature and humidity are controlled through heating coils, cooling coils, evaporative coolers and an electrical heater, while air flow rates are controlled by variable speed fans.…”

Section: Test Facility and Adopted Desiccant Wheelmentioning

confidence: 99%

“…1-5), boundary and initial conditions and closure equations are reported in previous works of the authors (De Antonellis et al, 2010, 2015b.…”

Section: Model Description and Validationmentioning

confidence: 99%

See 2 more Smart Citations

On the control of desiccant wheels in low temperature drying processes

Antonellis

Intini

Joppolo

et al. 2016

International Journal of Refrigeration

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Section: Methodssupporting

confidence: 83%

Section: Test Facility and Adopted Desiccant Wheelmentioning

confidence: 99%

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On the control of desiccant wheels in low temperature drying processes

Antonellis

Intini

Joppolo

et al. 2016

International Journal of Refrigeration

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“…De Antonellis et al [3] studied the humidification process for a hospital application during winter period through an experimental and numerical investigation. Water vapour is adsorbed from outdoor air and it is released through a desiccant wheel to the supply air.…”

Section: Introductionmentioning

confidence: 99%

Preliminary experimental and numerical analysis of a silica gel packed bed humidification system

2019

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In this research, an innovative air humidification system based on two packed beds made of silica gel spherical particles is developed. Each bed is alternatively crossed by two airflows (regeneration and process). The first air stream, at outdoor conditions, after being heated and humidified through the sorption material, is supplied to the building. The second one, also at outdoor conditions, provides water vapour to the desiccant packed bed. The system design and optimization is carried out through a numerical and experimental approach. The developed phenomenological model is based on the Pseudo Gas-side Controlled (PGC) method, considering only the gas side resistance and, therefore, assuming uniform water content and temperature distribution within the desiccant particles. A test rig to evaluate performance of the packed bed humidification system has been realized and experimental results have been used to validate the model. Obtained performance highlights that the proposed system can provide adequate humidification and that it can be a valid alternative to conventional adiabatic and steam humidifiers.

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“…When the ratio process air flow rate to the regeneration air flow rate is greater than 1.3, the desired outlet humidity can be achieved. Besides the lower the outdoor air temperature, the higher the process air flow rate [6]. heating source temperature.…”

Section: Introductionmentioning

confidence: 99%

Analysis of dehumidification and humidity removal process of desiccant wheel

Kara

Hürdoğan

Büyükalaca

2017

European Mechanical Science

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Desiccant cooling technology is an environmentally attractive alternative to conventional mechanical air conditioning. A desiccant cooling system is a suitable way to improve indoor air quality due to its superior humidity control and it also provide as economical and cleaner for hot and humid regions. The most important component of the technology is the desiccant wheel which is used to remove the humidity of air. In this study, the analysis of dehumidification and humidity removal process of desiccant wheel were carried out using the performance data given by manufactures of the desiccant rotary wheel. Two parameters (F d , F r ) were defined for the analysis of the process. It was found that dehumidification and regeneration processes do not occur at constant wet bulb temperature. An equation for F d and F r which depends on the humidity ratio of outdoor air and regeneration temperature was composed.

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Desiccant wheels for air humidification: An experimental and numerical analysis

Cited by 40 publications

References 21 publications

On the control of desiccant wheels in low temperature drying processes

On the control of desiccant wheels in low temperature drying processes

Preliminary experimental and numerical analysis of a silica gel packed bed humidification system

Analysis of dehumidification and humidity removal process of desiccant wheel

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