https://orcid.org/0000-0002-7080-0586
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ABSTRACT
Thermal energy storage system has significant influence on energy conservation. Based on the literature review, it is identified that very few studies have been reported on performance assessment of latent and sensible thermal energy storage systems. This study presents an experimental study on latent and sensible thermal energy storage systems to investigate their performance during discharging cycle. Results have shown that the latent heat storage system has improvement of about 104% in discharging time and 4.1 times more energy is recovered as compared to the sensible heat storage system. It is recommended on the basis of obtained results to operate the systems at lower mass flow rate during discharging.
Nomenclature
| Cp | = | Specific heat capacity (kJ/kgK) |
| E | = | Energy (kJ/kg) |
| ∆H | = | Latent heat of fusion (kJ/kg) |
| m° | = | Air flow rate(kg/s) |
| mc | = | Concrete mass (kg) |
| mp | = | PCM mass (kg) |
| Ti | = | Temperature of air at inlet(°C) |
| Tout | = | Temperature of air at outlet (°C) |
| t | = | Time (sec) |
| Tavg | = | Average bed temperature (°C) |
| Tin | = | Initial temperature (°C) |
| Ts1 | = | Temperature at solidification (°C) |
| Ts2 | = | Peak temperature (°C) |
| f | = | Solid fraction |
| s | = | Solid |
| l | = | Liquid |
| c | = | Concrete |
| P | = | Phase change media |
| HTF | = | Heat transfer fluid |
| PCM | = | Phase change material |
| TES | = | Thermal energy storage |
Acknowledgments
The first author is grateful to the Ministry of human resource and development (MHRD), India, for providing the support financial support to complete this work.