Abstract
Recently, renewable sources of energy, particularly solar thermal energy, have gained significant attention for developing heating and cooling mechanisms for buildings. Present work aims at developing a theoretical model for space heating based on phase change material (PCM) using solar energy in winter conditions for northern region of India. The system has PCM container placed inside the room near the wall, which receives heat from concentrating solar system during the daytime. After achieving the temperature of PCM above its melting point using the solar system, the stored heat of PCM is released to the room ambient during the nighttime when the room ambient is at lower temperature. OM-37, having melting temperature of 37 °C, has been used as a PCM for the current research work. The numerical investigation of the system shows that temperature of room reaches to 23–24 °C from 15 °C in 4–6 h of operation due to high latent heat capacity of the PCM and thus ensuring thermal comfort of occupants.
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Abbreviations
- ρ :
-
Fluid density (kg m−3)
- p :
-
Static pressure (N m−2)
- h :
-
Sensible enthalpy (J kg−1)
- k :
-
Thermal conductivity (W m−1 K−1)
- β :
-
Thermal expansion coefficient (K−1)
- μ :
-
Dynamic viscosity (kg m−1 s−1)
- A mush :
-
Mushy zone constant (kg m−3 s−1)
- \(\vec{\nu }\) :
-
Velocity component (m s−1)
- \(\overline{\overline{\tau }}\) :
-
Stress tensor (N m−2)
- H :
-
Enthalpy (J kg−1)
- T :
-
Temperature (K)
- γ :
-
Liquid fraction
- Ref:
-
Reference
- s:
-
Solidus of the PCM
- l:
-
Liquids of the PCM
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Acknowledgements
The authors gratefully acknowledge the financial support by a grant from the Science and Engineering Research Board, Department of Science and Technology, India, under the grant number SB/FTP/ETA-0311/2013.
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Vaidhyanathan, A., Banker, N.D. (2020). Theoretical Modeling of Phase Change Material-Based Space Heating Using Solar Energy. In: Singh, S., Ramadesigan, V. (eds) Advances in Energy Research, Vol. 2. Springer Proceedings in Energy. Springer, Singapore. https://doi.org/10.1007/978-981-15-2662-6_24
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DOI: https://doi.org/10.1007/978-981-15-2662-6_24
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