Open AccessLow-Cost High Energy Density Material for Solar Thermal Heat Storage
Author(s) -
Rebhi A. Damseh
Publication year - 2020
Publication title -
jordanian journal of engineering and chemical industries
Language(s) - English
Resource type - Journals
eISSN - 2617-720X
pISSN - 2616-9584
DOI - 10.48103/jjeci362020
Subject(s) - thermal energy storage , thermal conductivity , materials science , thermal conduction , energy storage , thermal , composite material , solar energy , thermal energy , volume (thermodynamics) , joule (programming language) , heat transfer , thermodynamics , electrical engineering , physics , power (physics) , engineering
A low-cost and enhanced thermal properties composite material for sensible heat storage in solar thermalenergy storage applications is introduced. The proposed material is produced primarily for small scale solarthermal applications. However, it can be utilized for large scale solar thermal plants. The material has theadvantages of high thermal conductivity and large energy storage density. The introduced material iscomposed of a mixture of cement and cast-iron particles. To obtain an optimal mixture, different samples ofthe material are prepared with different ratios of the cement-iron weights. The thermal conductivity of theproduced samples is measured by using the linear heat conduction method. The specific heat capacity ofthe produced mixtures is calculated by using the Rule of the mixture. The obtained results show that theintroduced material has a significant enhancement in thermal conductivity. Where, thermal conductivity ashigh as ~6.0 W/m.K and energy storage density as high as ~788 Joule/cm3are achieved. The estimatedvolume energy density is ~89% higher than that of water. The produced material has the advantage of highenergy volume density, being unhazardous, chemically stable, eco-friendly, easy to fabricate, and integratewith solar thermal energy systems and is a low-cost material.