First and second order simplified models for the performance evaluation of low temperature activated desiccant wheels

Comino, Francisco; Peci, F.

doi:10.1016/j.enbuild.2016.02.005

Cited by 22 publications

(3 citation statements)

References 21 publications

(21 reference statements)

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“…Numerous researchers have analyzed the energy performance of desiccant systems [2]. Silica gel or zeolite are the most widely used desiccant materials in commercial systems [3,4]. Nevertheless, green desiccants materials obtained from furniture industry or forestry waste have also been studied previously [5], achieving adequate adsorption capacity values [6,7].…”

Section: Introductionmentioning

confidence: 99%

Desiccant Dehumidification System Developed Using Additive Manufacturing and Biodegradable Materials

Comino,

Romero,

Molero

et al. 2023

KEM

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Traditional dehumidification equipment is based on vapour compression units. However, they depend mainly on electrical energy and use polluting gases. An alternative to this equipment is desiccant dehumidification systems, which is based on adsorbent materials. These desiccant systems are an efficient way of removing moisture from the air in buildings with high latent loads. This work presents a new way to manufacture fixed-bed desiccant elements that can remove moisture from an air flow. The desiccant element is obtained by material extrusion-based additive manufacturing (fused filament fabrication or FFF). This technology is cost-effective and provides a precision and finish suitable for the intended use. The filament used is Pine, consisting of an easy printable thermoplastic matrix (polylactic acid, PLA, 80 wt%) and a filler based on pine wood powder (20 wt%). This composite material reached a water absorption capacity of 11.5 %. The experimental results of the desiccant air unit demonstrated high dehumidification capacity, up to 39 mg/s, for a regeneration air temperature of 50 °C. The volumetric adsorption rate was also high, up to 30 g/s·m3, for low pressure drop values, below 522 Pa. The proposed method allows the customised, on-demand and just-in-time manufacturing of air dehumidification systems based on the use of biodegradable desiccant materials of organic origin. Such solutions contribute to the circular economy promoted by The United Nations in the Sustainable Development Goals.

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Section: Introductionmentioning

confidence: 99%

Desiccant Dehumidification System Developed Using Additive Manufacturing and Biodegradable Materials

Comino,

Romero,

Molero

et al. 2023

KEM

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“…Different models of the desiccant wheel have been developed by many researchers over the years [30][31][32]. In this work, the operation of the desiccant wheel is simulated using the Type 1716 (component of the TESS library), containing a model based on the equations for F1 and F2 potentials developed by Jurinak [33]:…”

Section: Desiccant Wheel Modelmentioning

confidence: 99%

Experimental Validation of the Simulation Model of a DOAS Equipped with a Desiccant Wheel and a Vapor Compression Refrigeration System

2017

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A dedicated outdoor air system (DOAS) can be designed to supply 100% of the outside air and meet the latent load of the room with dry air. The objectives of this study were to develop a model of a DOAS equipped with a desiccant wheel and a vapor-compression refrigeration system, build a prototype, validate the model with experimental data, and gain knowledge about the system operation. The test facility was designed with the desiccant wheel downstream of the cooling coil to take advantage of the operating principles of cooling coils and desiccants. A model of the DOAS was developed in the TRNSYS environment. The root mean standard error (RMSE) was used for model validation by comparing the measured air and refrigerant properties with the corresponding calculated values. The results obtained with the developed model showed that the DOAS was able to maintain an indoor humidity ratio depending on outdoor conditions. Laboratory tests were also used to investigate the effect of changes in the regeneration air temperature and the process airflow rate on the process air humidity ratio at the outlet of the wheel. The results are consistent with the technical literature.

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“…However, the cooling demand coverage of a building was not studied in this piece of work, and there is no information about the climates in which UTC's have a better performance. In another study, [20] showed that desiccant wheel can work satisfactorily with low regeneration air temperature. Regarding heating with UTC's, many authors have studied its potential for building heating and industry drying processes [21].…”

mentioning

confidence: 99%

Performance of an unglazed transpire collector in the facade of a building for heating and cooling in combination with a desiccant evaporative cooler

Peci

Comino

2018

Renewable Energy

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First and second order simplified models for the performance evaluation of low temperature activated desiccant wheels

Cited by 22 publications

References 21 publications

Desiccant Dehumidification System Developed Using Additive Manufacturing and Biodegradable Materials

Desiccant Dehumidification System Developed Using Additive Manufacturing and Biodegradable Materials

Experimental Validation of the Simulation Model of a DOAS Equipped with a Desiccant Wheel and a Vapor Compression Refrigeration System

Performance of an unglazed transpire collector in the facade of a building for heating and cooling in combination with a desiccant evaporative cooler

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