Stearic Acid/Inorganic Porous Matrix Phase Change Composite for Hot Water Systems
Abstract
:1. Introduction
2. Results and Discussion
2.1. Absorption Ability
2.2. Microstructure
2.3. Pore Size Distribution
2.4. Thermal Diffusion Coefficient
2.5. Dynamic Response and Long-Term Cycle Stability
3. Experimental
3.1. Materials
3.2. Sample Preparation
3.3. Characterization
3.3.1. Field Emission Scanning Electron Microscopy (FESEM)
3.3.2. Porosity Test
3.3.3. Thermal Diffusion Coefficient
3.3.4. Thermal Shock Tester
3.3.5. Differential Scanning Calorimetry (DSC)
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample Availability: Samples of the compounds are available from the authors. |
Samples | Heating | |||
---|---|---|---|---|
Before 100 Cycles | After 100 Cycles | |||
Melting Temperature (°C) | Enthalpy (J/g) | Melting Temperature (°C) | Enthalpy (J/g) | |
Stearic acid | 72.3 | 216.5 | 72.7 | 218.5 |
Stearic acid/EG-A | 76.1 | 208.0 | 77.3 | 193.1 |
Stearic acid/EG-B | 78.8 | 202.6 | 78.5 | 199.7 |
Samples | Cooling | |||
---|---|---|---|---|
0 cycle | After 100 Cycles | |||
Freezing Temperature (°C) | Enthalpy (J/g) | Freezing Temperature (°C) | Enthalpy (J/g) | |
Stearic acid | 63.0 | 223.4 | 63.1 | 224.4 |
Stearic acid/EG-A | 60.6 | 213.3 | 59.8 | 198.0 |
Stearic acid/EG-B | 59.5 | 206.3 | 60.1 | 202.8 |
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Xu, L.; Yang, R. Stearic Acid/Inorganic Porous Matrix Phase Change Composite for Hot Water Systems. Molecules 2019, 24, 1482. https://doi.org/10.3390/molecules24081482
Xu L, Yang R. Stearic Acid/Inorganic Porous Matrix Phase Change Composite for Hot Water Systems. Molecules. 2019; 24(8):1482. https://doi.org/10.3390/molecules24081482
Chicago/Turabian StyleXu, Ling, and Rui Yang. 2019. "Stearic Acid/Inorganic Porous Matrix Phase Change Composite for Hot Water Systems" Molecules 24, no. 8: 1482. https://doi.org/10.3390/molecules24081482