Energy Storage Analysis of a Mixed R161/MOF-5 Nanoparticle Nanofluid Based on Molecular Simulations

Abstract

The thermal properties of refrigerants can be modified by adding porous nanoparticles into them. Here, molecular simulations, including molecular dynamics and grand canonical Monte Carlo, were employed to study the thermal energy storage properties of an R161/MOF-5 nanofluid. The results show that the thermodynamic energy change of MOF-5 nanoparticles is linear to the temperature. The adsorption heat calculated by grand canonical Monte Carlo is close to that calculated by the Clausius–Clapeyron equation. Additionally, a negative enhancement of the thermal energy storage capacity of the R161/MOF-5 nanofluid is found near the phase transition area.

Molecular Simulations of Adsorption and Thermal Energy Storage of Mixed R1234ze/UIO-66 Nanoparticle Nanofluid

“…The specific heat capacity of UIO-66 is Cp = 2 21 (kJ/kg K) by corresponding calculation. This is different from the data reported [26,31,32] in the literature, mainly due to the different structures and components of MOFs. According to formula (1), the specific enthalpy difference Δh UIO-66 and desorption heat Δh desorption of UIO-66 in mixed working medium R1234ze/UIO-66 are calculated.…”

The adsorption and desorption processes of organic working fluids R1234yf, R134a, R32 in MOF-5 and Co-MOF-74: a molecular simulation study

“…The results showed that MOFs could store more CO 2 while consuming less energy compared to traditional storage systems. Wang et al (2018) studied the adsorption and energy storage of R161 and similar refrigerants in MOF-5. It was found that fluorine atoms in the organic working pairs enhanced their adsorption in MOFs.…”

The light-responsive oxidase-like activity of MIL-125-NH2@Pd and its application in the determination of casein phosphopeptides

“…MOFs, as the emerging porous crystalline materials, are formed from coordinating metal ions and organic ligands. 11 MOFs' unique characteristics, such as excellent porosity, large surface areas, diverse structures/functions, and unsaturated metal sites, lead to their widespread applications in the fields of gas absorption, 12 energy storage, 13 electrochemiluminescence, 14 etc. Moreover, the inherent coordination between metals or metal clusters and organic linkers in MOFs provides great flexibility in modulating their semiconductor properties to enhance the sensitivity of light collection and light response.…”