Apparent heat capacity method to describe the thermal performances of a latent thermal storage system during discharge period
نویسندگان
چکیده
In this work, a novel detailed dynamic model for latent cold thermal storage unit containing water as phase change material (PCM) is presented. The proposed based on transient energy balances both PCM capsules and heat transfer fluid (HTF). apparent capacity approach used to transition processes in PCM, where the given temperature-dependent function. This method can be simply integrated into variety of software assess efficiency storage. validated using measured results from literature it investigate influence multiple parameters performance. obtained result show that melting process varies axial direction radial unit. It was also observed higher height tank, longer discharge period. Increasing diameter 47 mm 77 leads increase discharging period by about 30%. addition, varying tank initial temperature between −8 °C −4 does not have significant effect time. Finally, recommended improving performance minimizing pumper consumption, compromise HTF flow rate capsule must determined.
منابع مشابه
A Comprehensive Study on a Latent Heat Thermal Energy Storage System and its Feasible Applications in Greenhouses
Abstract Energy crisis is a major challenge in the current world. Latent heat thermal energy storage (LHTES) systems are known as equipment with promising performance by which thermal energy can be recovered. In the present study a comprehensive theoretical and experimental investigation is performed on a LHTES system containing PEG1000 as phase change material (PCM). Discussed topics can be ca...
متن کاملThermal energy storage – overview and specific insight into nitrate salts for sensible and latent heat storage
Thermal energy storage (TES) is capable to reduce the demand of conventional energy sources for two reasons: First, they prevent the mismatch between the energy supply and the power demand when generating electricity from renewable energy sources. Second, utilization of waste heat in industrial processes by thermal energy storage reduces the final energy consumption. This review focuses mainly ...
متن کاملNumerical Simulation of a Porous Latent Heat Thermal Energy Storage for Thermoelectric Cooling
Porous latent heat thermal energy storage for thermoelectric cooling is simulated via a matrix-based enthalpy formulation, having the temperature as unknown, in a three-dimensional domain. The system is made up of two aluminum containers; the inner one contains the cooling objective in water suspension and the outer one the phase change material (PCM) in a porous aluminum matrix. The system’s c...
متن کاملExperimental Study on Thermal Discharge Performance of A Phase Change Thermal Storage Material
A thermal energy storage (TES) equipment utilizing phase change material (PCM) was designed and built. The PCM is sealed inside metal tubes and exchanges heat with process fluid flowing outside. The storage capacity characteristics of the system was analyzed based on date covering the inlet and outlet temperatures of the process fluid, volumetric flow rate of the process fluid, and temperature ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of energy storage
سال: 2022
ISSN: ['2352-1538', '2352-152X']
DOI: https://doi.org/10.1016/j.est.2022.104960