N2 - Concentrating solar power (CSP) plants can provide dispatchable power with a thermal energy storage capability for increased renewable-energy grid penetration. Particle-based CSP systems permit higher temperatures, and thus, potentially higher solar-to-electric efficiency than state-of-the-art molten-salt heat-transfer systems.
We present an extension of the generalized energy-conserving dissipative particle dynamics method (J. Bonet Avalos, et al., Phys Chem Chem Phys, 2019, 21, 24891–24911) to include chemical reactivity, denoted GenDPDE-RX. GenDPDE-RX provides a means of simulating chemical reactivity at the micro- and mesoscales, while …
Molecular dynamics simulations have been performed to investigate the mechanism of thermal energy transport over the interface between n-heneicosane in solid and liquid phases and few-layer ...
The nano-encapsulated phase change materials (PCM), which have several good thermophysical properties, were proposed as potential for thermal energy storage. …
The meaning of the rest energy in Table 2.1 will become clear after reviewing the theory of relativity. It is listed in energy units of million electron volts (MeV). An electron volt is defined as the energy gained by a particle having one fundamental unit of charge (q = ±e = ±1.6 × 10-. 19 coulombs) passing.
Moving packed bed particle/supercritical carbon dioxide (SCO 2) heat exchanger (MPBE) is a critical equipment to integrate particle thermal energy storage …
A multicomponent framework for energy conserving dissipative particle dynamics (DPD) is presented for the first time in both dimensional and dimensionless forms. Explicit definitions for unknown scaling factors that are consistent with DPD convention are found by comparing the present, general dimensionless governing equations to the …
Fluid particles can be monatomic, diatomic, or polyatomic, mononuclear or polynuclear, with various molecular symmetries and asymmetries, and can have five …
Thermal energy storage (TES) has a pivotal role to play in the energy chain. •. Structure–property relationships are essential for manufacturing composite TES …
Thermochemical energy storage is a promising alternation in heat recovery application compared to phase change energy storage. However, cycling instability caused by agglomeration of the reactant particles is the main problem that hinders the application of this system. The present paper focuses on the agglomeration behavior …
The direct use of heat reduces energy costs of particle TES relative to other storage methods in Table 1, and combining low-cost particle thermal storage with renewable inputs in high renewable generation areas could potentially provide an …
Hereby, important tasks are the optimisation of thermal losses and providing a tuneable storage capacity, as well as tuneable storage dynamics for thermal energy storage modules which are …
Due to the direct coupling of computational fluid dynamics and the simulation of the phase transition of the core material, the influence of the working fluid …
Particle-based thermal energy storage systems are one promising technology by storing excess electricity or heat as sensible thermal energy in …
1 Lattice Boltzmann methods for multiphase flow and phase-change heat transfer Q. Li c, *a, b, K. H. Luo, Q. J. Kang a, Y. L.He d, Q. Chen e, and Q. Liu d a Computational Earth Science Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA b School of Energy Science and Engineering, Central South University, Changsha 410083, China c …
Abstract. In this work, we study the heat transfer performance and particle dynamics of a high mass-loaded, compressible, particle-laden flow in a horizontally oriented pipe using an Eulerian–Eulerian (two-fluid) computational model. Previous experimental work by our group provides the basis for the study. Specifically, a …
The analysis showed that gas-particle convective heat transfer was the dominant mechanism. Lian et al. [35] coupled a chemical reaction model and a radiation heat transfer model with DEM to analyze the correlation between particle trajectories, heat transfer, and chemical reactions. The contributions of radiation heat transfer and reaction …
The thermal storage capacity and the storage dynamics behaviour are crucial for fulfilling certain application requirements. In this work, a novel macro …
Current concentrated solar power (CSP) plants use molten salts as heat storage and heat transfer medium.The thermal property enhancement of molten salts can increase the efficiency and lower the investment cost of CSP plants. In this study, the experiments and molecular dynamics (MD) simulations were employed to investigate the …
Dynamic PCMs are designed to improve the power of thermal storage without significant sacrifice of energy density, in which the front solid–liquid interface of …
In the present study, a two-dimensional CFD approach has been chosen to investigate heat transfer in a packed bed filled with phase change materials (PCM) capsules. In this research, four different geometries, circular, hexagonal, elliptical, and square, are considered PCM packages made of KNO3 covered with a copper layer and …
Abstract. The heat storage technology can improve the performance of a solar thermal utilization system effectively. This work studied the effect of phase-change materials (PCMs) on thermal stratification in a heat storage tank. A 60 l sodium acetate trihydrate heat storage tank with 331.15 K phase-change temperature was designed and …
Particle solar receivers associated with SPT concentrating systems offer very interesting options for high temperature and high efficiency power cycles, thermal storage integration (using the same particles as HTF and storage medium) and chemical applications of concentrated solar energy (e.g. thermo-chemical water splitting processes …
Current concentrated solar power (CSP) plants that operate at the highest temperature use molten salts as both heat transfer fluid (HTF) and thermal energy storage (TES) medium. Molten salts can reach up to 565°C before becoming chemically unstable and highly corrosive. This is one of the higher weaknesses of the technology.