Numerical study of a MIL101 metal organic framework based desiccant cooling system for air conditioning applications

Bareschino, Piero; Hanak, Dawid P.; Pepe, Francesco; Angrisani, Giovanni; Roselli, Carlo; Sasso, Maurizio

doi:10.1016/j.applthermaleng.2017.06.024

Cited by 34 publications

(21 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Analyses of the dehumidification performance were carried out considering the amplitude of the regeneration section, the DW rotation speed, the material porosity, etc., at different regeneration and process air conditions (T and ω) and for both the adsorbents. Under optimal parameter values, it was observed that the dehumidification effectiveness of MILGO DW was about 30% higher than that of the conventional silica-gel based desiccant wheel [18], while with zeolite-rich tuff rotor the moisture removal was better than with silica-gel DW, when relative humidity was low and the regeneration air temperature was very high.…”

Section: Hygroscopic Materials: Modeling and Characterizationmentioning

confidence: 98%

“…In order to describe the behavior of the desiccant wheel a mathematical model consisting of mass and energy balances for gas-side and solid-side was implemented in previous works [18,19]:…”

Section: Hygroscopic Materials: Modeling and Characterizationmentioning

confidence: 99%

“…where ω is the air absolute humidity, M the moisture content of solid adsorbent (M e at equilibrium condition), T the temperature, ρ the density, c p the heat capacity, k the thermal conductivity, K the effective mass transfer coefficient, V the air superficial velocity, ε the void fraction, θ the time, z the axial coordinate, D s the surface diffusion coefficient, q s isosteric heat of adsorption, M w the molecular weight of water, and the subscript m and d, where used, refer the above to moist air and solid adsorbent, respectively. Details about the equilibrium correlation and the absorption heat calculation, along with validation carried out with experimental data, as well as model implementation and results are reported in [18,19] for MILGO and tuff, respectively. The model was solved using the commercial software package Comsol Multiphisycs ® .…”

Section: Hygroscopic Materials: Modeling and Characterizationmentioning

confidence: 99%

“…where: E AS/CS p = E IS/CS el,CH + E IS/CS el,aux + E US el,non−HVAC /η EG + E IS/CS th,B /η B (18) and:…”

Section: Energy and Environmental Indexesmentioning

confidence: 99%

See 3 more Smart Citations

Desiccant-Based Air Handling Unit Alternatively Equipped with Three Hygroscopic Materials and Driven by Solar Energy

et al. 2019

Self Cite

View full text Add to dashboard Cite

The energy demand for the air-conditioning of buildings has shown a very significant growth trend in the last two decades. In this paper three alternative hygroscopic materials for desiccant wheels are compared considering the operation of the air handling unit they are installed in. The analyses are performed by means of the TRNSYS 17® software, simulating the plant with the desiccant wheel made of: silica-gel, i.e., the filling actually used in the experimental plant desiccant wheel of the University of Sannio Laboratory; MIL101@GO-6 (MILGO), a composite material, consisting of graphite oxide dispersed in a MIL101 metal organic framework structure; Campanian Ignimbrite, a naturally occurring tuff, rich in phillipsite and chabazite zeolites, widespread in the Campania region, in Southern Italy. The air-conditioning system analyzed serves a university classroom located in Benevento, and it is activated by the thermal energy of a solar field for which three surfaces are considered: about 20, 27 and 34 m2. The results demonstrate that a primary energy saving of about 20%, 29%, 15% can be reached with silica-gel, MILGO and zeolite-rich tuff desiccant wheel based air handling units, respectively.

show abstract

Section: Hygroscopic Materials: Modeling and Characterizationmentioning

confidence: 98%

“…In order to describe the behavior of the desiccant wheel a mathematical model consisting of mass and energy balances for gas-side and solid-side was implemented in previous works [18,19]:…”

Section: Hygroscopic Materials: Modeling and Characterizationmentioning

confidence: 99%

Section: Hygroscopic Materials: Modeling and Characterizationmentioning

confidence: 99%

“…where: E AS/CS p = E IS/CS el,CH + E IS/CS el,aux + E US el,non−HVAC /η EG + E IS/CS th,B /η B (18) and:…”

Section: Energy and Environmental Indexesmentioning

confidence: 99%

See 2 more Smart Citations

Desiccant-Based Air Handling Unit Alternatively Equipped with Three Hygroscopic Materials and Driven by Solar Energy

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, graphene‐based materials can prevent aggregation of electrodes and volume expansion or contraction during charge and discharge process, providing the hybrid increased electrical conductivity. To synthesize the composites, the solvothermal method and direct mixing method were used for LIBs and SIBs and endowed the composites with suitable structures for the transformation to battery electrodes …”

Section: Batteriesmentioning

confidence: 99%

Metal‐Organic Frameworks/Graphene‐Based Materials: Preparations and Applications

Zheng

Xue

et al. 2018

Adv Funct Materials

242

107

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs), a new class of crystalline porous materials, can be applied in many fields as adsorbents, supercapacitors, catalysts, and so on because of, among others, their superior properties of large surface area, tunable pore size, diverse structures. However, the low stability and selectivity of traditional MOFs indicate that they are not the best configuration for the applications outlined above. In this case, a type of composite made from an assembly of graphene-based materials and MOFs that exhibits the advantages of the parent materials has attracted widespread attention in recent years. This review provides an overview of the recent developments of MOF/graphene-based materials, focusing on their applications in gas separation/storage, water purification, chemical sensors, batteries, supercapacitors, and catalysts, as well as their preparation methods.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201804950. traditional method, they can be excellent alternatives of single MOFs to overcome the above-mentioned difficulties. [34][35][36][37][38] Graphene-based materials have recently introduced new possible applications because of their unique structure and low toxicity, as well as their excellent electronic, thermal, electrochemical, and mechanical properties. [39] More recently, many reports have confirmed that the introduction of graphene-based materials into other materials can lead to surprising improvements in electronic conductivity and stability. [38,40] Under these circumstances, it is reasonable to consider whether composites made from the assembly of graphene-based materials and MOFs possess extraordinary characteristics given that the parent materials have complementary properties. [40][41][42] Naturally, the idea of hybridizing graphene derivatives with MOFs materialized and soon attracted widespread attention. [43][44][45] According to recent research, composites of MOF/graphene-based materials can integrate the advantages and mitigate the shortcomings of the individual components perfectly, enabling the composites to possess improved stability, enhanced electrical conductivity, high selectivity, and template effects. [34,[46][47][48][49] With the combination of MOF and graphene-based materials, the unexpected interactions take place and bring unique performance in many applications. Thanks to the ionic groups and the aromatic sp 2 domains, graphene-based materials can not only function as structural nodes, but also participate in bonding interactions, which would be more active in MOFs. What's more, carboxylate and pyridine groups of graphene-based materials play important part in the assemble, which could enhance the coordination bonding and guide the growth of MOF, providing a more beneficial structure. These special interactions are unique in MOF/graphenebased materials, which indicates that this kind of materials deserve more attention. As concluded in Scheme 1, the addition of graphene-based material...

show abstract

Review on Polymer Materials for Solid Desiccant Cooling System

Liu,

Sundarrajan,

Kumar

et al. 2023

Macro Materials & Eng

View full text Add to dashboard Cite

As an alternative form of vapor compression air conditioning devices, solid desiccant cooling (SDC) techniques have increasingly been explored recently. The overall performances of SDC primarily rely on the capability of dehumidification and regeneration of desiccant. A desiccant with a great uptake capability and excellent regeneration potential is preferred in an SDC system. Although traditional desiccants like silica gels and zeolites are able to absorb moisture at moderate levels, hygroscopic polymers show a superior ability in moisture sorption and desorption. Significant research has been conducted to investigate the hygroscopic polymers in SDC for household and industrial applications. Here, first, an introduction to SDC systems is presented, and then hygroscopic polymers from natural and synthetic origins are discussed. Synthetic polymers discussed are metal–organic frameworks (MOFs), covalent organic frameworks (COFs), covalent triazine frameworks (CTFs), amorphous porous organic polymers (POPs), polyelectrolytes, and polymer‐based composites. Their dehumidification behaviors in SDC systems, primarily desiccant‐coated heat exchanger (DCHE) systems, are compared and summarized. Binders employed in SDC systems are also summarized, as a proper binder enhances the overall performance of the desiccant system. It can be anticipated that hygroscopic polymers and binder materials would witness extensive applications in the future.

show abstract

Numerical study of a MIL101 metal organic framework based desiccant cooling system for air conditioning applications

Cited by 34 publications

References 33 publications

Desiccant-Based Air Handling Unit Alternatively Equipped with Three Hygroscopic Materials and Driven by Solar Energy

Desiccant-Based Air Handling Unit Alternatively Equipped with Three Hygroscopic Materials and Driven by Solar Energy

Metal‐Organic Frameworks/Graphene‐Based Materials: Preparations and Applications

Review on Polymer Materials for Solid Desiccant Cooling System

Contact Info

Product

Resources

About