Latent Heat Storage Applications Research Articles

Utilization of waste glass powder for latent heat storage application in buildings

The feasibility of using soda–lime waste glass powder for latent heat storage application was investigated. n-Octadecane was loaded into glass powder (GP). The surface morphology, chemical compatibility, phase change behavior, thermal stability and reliability were determined using Scanning electron microscope (SEM), Fourier transformation infrared spectrum analysis (FT-IR), Differential scanning calorimetry (DSC), Thermo gravimetric analyzer (TGA) and thermal cycling test. The thermal performance of cement paste composite PCM was also evaluated.The maximum mass percentage of n-octadecane retained by GP was found to be 8. FT-IR results showed that the interaction between the components of composite PCM is physical in nature. The melting and freezing temperatures of the composite PCM were found to be 26.93°C and 25.03°C while the latent heat of melting and freezing were 18.97J/g and 18.95J/g. TGA and thermal cycling results confirmed that the composite PCM is thermally stable and reliable. Thermal performance test showed that the cement paste panel with composite PCM reduced the indoor temperature by 3°C. It can be concluded that the composite PCM can be used for thermal energy storage applications in buildings. Its usage will provide sustainable solution to reuse the waste glass. Thus, landfills can be saved for useful applications.

03/02432 Thermal reliability test of some fatty acids as PCMs used for solar thermal latent heat storage applications: Sarl, A. Energy Conversion and Management, 2003, 44, (14), 2277–2287

03/02432 Thermal reliability test of some fatty acids as PCMs used for solar thermal latent heat storage applications: Sarl, A. Energy Conversion and Management, 2003, 44, (14), 2277–2287

Thermal reliability test of some fatty acids as PCMs used for solar thermal latent heat storage applications

The purpose of this study is to determine the thermal reliability of stearic acid, palmitic acid, myristic acid and lauric acid as latent heat energy storage materials with respect to various numbers of thermal cycles. The fatty acids, as phase change materials (PCMs), of industrial grade (purity between 90% and 97%) were subjected to accelerated thermal cycle tests. The differential scanning calorimetry (DSC) analysis technique was applied to the PCMs after 0, 120, 560, 850 and 1200 melt/freeze cycles in order to measure the melting temperatures and the latent heats of fusion of the PCMs. The DSC results indicated that the change in melting temperature for the PCMs was in the range of 0.07–7.87 °C, and the change in latent heat of fusion was −1.0% to −27.7%, except for stearic acid between 560 and 1200 melt/freeze cycles. However, the decrease in the latent heats of fusion for all the PCMs was not regular with increasing thermal cycles. The experimental results also show that the investigated fatty acids as latent heat energy storage materials have a good thermal reliability in view of the latent heat of fusion and melting temperature with respect to thermal cycling for thermal energy storage applications in the long term.

Thermal cycle test of urea for latent heat storage applications

Accelerated thermal cycle tests for melt/freeze cycles of urea were conducted. Urea has shown a very high degradation in its latent heat and melting point within the first few cycles and did not melt after a few cycles. It is recommended that urea should not be used as a latent heat storage material. Copyright © 2001 John Wiley & Sons, Ltd.

Evaluation and selection of energy storage systems for solar thermal applications

Energy storage is one of the key technologies for energy conservation and therefore is of great practical importance. One of its main advantages is that it is best suited for solar thermal applications. This study deals with a comprehensive discussion of the evaluation and the selection of sensible and latent heat storage technologies, systems and applications in the field of solar energy. Several issues relating to energy storage are examined from the current perspective. In addition, some criteria, techniques, recommendations, checklists on the selection, implementation and operation of energy storage systems are provided for the use of energy engineers, scientists and policy makers. Copyright © 1999 John Wiley & Sons, Ltd.