Performance improvements in solar flat plate collectors by integrating with phase change materials and fins: A CFD modeling
| Autor: | Z. Badiei, Khosrow Jafarpur, Mohammad Reza Eslami |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fin
Materials science business.industry 020209 energy Mechanical Engineering 02 engineering and technology Building and Construction Mechanics Computational fluid dynamics Thermal energy storage Pollution Phase-change material Industrial and Manufacturing Engineering Phase change General Energy 020401 chemical engineering Heat transfer 0202 electrical engineering electronic engineering information engineering Fluid dynamics Transient (oscillation) 0204 chemical engineering Electrical and Electronic Engineering business Civil and Structural Engineering |
| Zdroj: | Energy. 192:116719 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2019.116719 |
| Popis: | Performance of solar flat plate collectors can be improved by using phase change materials for latent thermal energy storage. In this study, a three dimensional transient CFD model is developed to investigate a solar flat plate collector integrated with a layer of PCM. Heat transfer and fluid dynamics are simulated in each component by numerical solving of energy and momentum equations. Fins are also incorporated into the PCM and the resulting temperature distributions are analyzed during two different summer and winter days in Shiraz, Iran. Four different types of PCM with various melting temperatures are considered in this research. Results show that although the system with PCM has lower output temperatures in the morning, hot water can be supplied in a longer duration in the evening while discharging. Also, the average collector efficiency is increased from 33% to 46% in the summer day for the PCM with minimum melting temperature. In addition, incorporation of fins increases the storage capacity especially in PCMs with higher melting temperatures. However, heat dissipation into the ambient is larger in the finned system during the discharge in the afternoon and can reduce the efficiency marginally. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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