Prediction of Melting of Organic Phase Change Materials (PCMs) for Energy Storage with Simple Low Eutectic Systems

2010 ◽  
Vol 96 ◽  
pp. 277-281
Author(s):  
Li Rong Huang ◽  
Ming Xing Ai ◽  
Li Li Yang
Keyword(s):  
Phase Transition ◽  
Energy Storage ◽  
Phase Change ◽  
Binary Systems ◽  
Phase Change Materials ◽  
Single Parameter ◽  
Multiple Phase ◽  
Eutectic Systems ◽  
Solid Liquid ◽  
Margules Equation

The paper predicts the melting of solid-liquid organic PCMs for energy storage by the use of activity coefficient. Single parameter Margules Equation was built for alcohol - carboxylic acid series of binary systems by improving single parameter Margules Equation and introducing new variable temperatures, from which T-X phase diagram was obtained. The results are helpful with prediction of multiple phase change materials with the suitable phase transition temperature.

Ultraviolet-Visible Light-Thermal Conversion Organic Solid-Liquid Phase-Change Materials

2013 ◽  
Vol 679 ◽  
pp. 29-34
Author(s):  
Yun Ming Wang ◽  
Bing Tao Tang ◽  
Shu Fen Zhang
Keyword(s):  
Energy Storage ◽  
Liquid Phase ◽  
Solar Radiation ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Thermal Conversion ◽  
Organic Solid ◽  
Solid Liquid

UV-vis light-driven organic solid-liquid phase change materials exhibited excellent performances of UV-vis light-harvesting, UV-vis light-thermal conversion and thermal energy storage, which is promoted by UV absorbing dye as an effective ‘‘photon capture and molecular heater’’ for direct and efficient use of solar radiation.

Experimental investigations of a solar dryer with and without multiple phase change materials (PCM’s)

2016 ◽  
Vol 13 (3) ◽  
pp. 210-217 ◽  
Author(s):  
T.S. Sreerag ◽  
K.S. Jithish
Keyword(s):  
Energy Storage ◽  
Melting Point ◽  
Phase Change ◽  
Phase Change Materials ◽  
Drying Process ◽  
Absorber Plate ◽  
Content Type ◽  
Air Heater ◽  
Multiple Phase ◽  
Solar Dryer

Purpose This paper aims to present a comparative study of a solar dryer with and without multiple phase change materials (PCMs). It also involves designing and fabricating the experimental model of an indirect solar dryer which uses PCMs for thermal energy storage. Design/methodology/approach A corrugated aluminium sheet is used as an absorber plate. Aluminium pipes of 0.75 inch are welded under the corrugated sheet to store the PCM. Here, multiple PCMs are used – one with a high melting point and the other with a low melting point for the purpose of improving efficiency. A single air pass model in which air moves over the absorber plate is used for the study. Air is heated in an air heater section which also contains thermal energy storage. The energy obtained in the air heater section is first used to heat and melt the PCM. Findings Thus, heat energy is stored into the PCM and then the heated air moves into the drying chamber in which drying take place. When the sun’s insolation reduces, discharging from the PCM takes place. Thus, it reduces the fluctuation in the energy and provides continuous energy to the system. Glass wool is used as an insulation material. Different parameters for this air heater-dryer have been calculated. Originality/value The current study enhances the understanding of solar drying process and the developed model with and without multiple phase change materials can be used for optimising the drying process.

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