Design Improvement of a Vertically Oriented Thermal …
255
providing two/more partitions instead of one can further improve the thermal performance of the TES system. Therefore, such optimization study can be extended further
for the cases involving more number of partitions to further improve the performance
of TES systems.
6 Conclusions
In the present numerical study, a method to improve the performance of the TES
system is identified and the effects of such methods are investigated. The effects of
the introduction of the partition, types of partition and PCM mass proportion of each
zone are analyzed on the performance of the TES system. Following are the major
conclusions that are drawn from this study:
• Increase in surface area and natural convection during melting due to the
introduction of partition improves the performance of the TES system.
• On the effect of partition and its arrangement: Case 1 of the studied system
decreases the PCM total melting time by 18.75%, whereas case 2 decreases it
by 10.94% when compared with a simple TES system (base case).
• On the different proportions of PCM mass in each zone: Case 3 and case 4
decrease the total melting time of PCM by 20.31% and 29.69%, respectively,
when compared with a simple TES system (base case).
References
1. Mekrisuh K, Singh D, Udayraj (2020) Performance analysis of a vertically oriented concentrictube PCM based thermal energy storage system: parametric study and correlation development.
Renew Energy 149:902–916. https://doi.org/10.1016/j.renene.2019.10.074
2. Akgün M, Aydın O, Kaygusuz K (2008) Thermal energy storage performance of paraffin in a
novel tube-in-shell system. Appl Therm Eng 28:405–413. https://doi.org/10.1016/j.appltherm
aleng.2007.05.013
3. Mahdi JM, Lohrasbi S, Ganji DD, Nsofor EC (2018) Accelerated melting of PCM in energy
storage systems via novel configuration of fins in the triplex-tube heat exchanger. Int J Heat
Mass Transf 124:663–676. https://doi.org/10.1016/j.ijheatmasstransfer.2018.03.095
4. Mahdi JM, Lohrasbi S, Ganji DD, Nsofor EC (2019) Simultaneous energy storage and recovery
in the triplex-tube heat exchanger with PCM, copper fins and Al 2 O 3 nanoparticles. Energy
Convers Manage 180:949–961. https://doi.org/10.1016/j.enconman.2018.11.038
5. Singh RP, Xu H, Kaushik SC, Rakshit D, Romagnoli A (2019) Effective utilization of natural
convection via novel fin design & influence of enhanced viscosity due to carbon nano-particles
in a solar cooling thermal storage system. Sol Energy 183:105–119. https://doi.org/10.1016/j.
solener.2019.03.005
6. Farid MM, Kanzawa A (1989) Thermal performance of a heat storage module using PCM’s
with different melting temperatures: mathematical modeling. J Sol Energy Eng 111:152–157.
https://doi.org/10.1115/1.3268301
255
providing two/more partitions instead of one can further improve the thermal performance of the TES system. Therefore, such optimization study can be extended further
for the cases involving more number of partitions to further improve the performance
of TES systems.
6 Conclusions
In the present numerical study, a method to improve the performance of the TES
system is identified and the effects of such methods are investigated. The effects of
the introduction of the partition, types of partition and PCM mass proportion of each
zone are analyzed on the performance of the TES system. Following are the major
conclusions that are drawn from this study:
• Increase in surface area and natural convection during melting due to the
introduction of partition improves the performance of the TES system.
• On the effect of partition and its arrangement: Case 1 of the studied system
decreases the PCM total melting time by 18.75%, whereas case 2 decreases it
by 10.94% when compared with a simple TES system (base case).
• On the different proportions of PCM mass in each zone: Case 3 and case 4
decrease the total melting time of PCM by 20.31% and 29.69%, respectively,
when compared with a simple TES system (base case).
References
1. Mekrisuh K, Singh D, Udayraj (2020) Performance analysis of a vertically oriented concentrictube PCM based thermal energy storage system: parametric study and correlation development.
Renew Energy 149:902–916. https://doi.org/10.1016/j.renene.2019.10.074
2. Akgün M, Aydın O, Kaygusuz K (2008) Thermal energy storage performance of paraffin in a
novel tube-in-shell system. Appl Therm Eng 28:405–413. https://doi.org/10.1016/j.appltherm
aleng.2007.05.013
3. Mahdi JM, Lohrasbi S, Ganji DD, Nsofor EC (2018) Accelerated melting of PCM in energy
storage systems via novel configuration of fins in the triplex-tube heat exchanger. Int J Heat
Mass Transf 124:663–676. https://doi.org/10.1016/j.ijheatmasstransfer.2018.03.095
4. Mahdi JM, Lohrasbi S, Ganji DD, Nsofor EC (2019) Simultaneous energy storage and recovery
in the triplex-tube heat exchanger with PCM, copper fins and Al 2 O 3 nanoparticles. Energy
Convers Manage 180:949–961. https://doi.org/10.1016/j.enconman.2018.11.038
5. Singh RP, Xu H, Kaushik SC, Rakshit D, Romagnoli A (2019) Effective utilization of natural
convection via novel fin design & influence of enhanced viscosity due to carbon nano-particles
in a solar cooling thermal storage system. Sol Energy 183:105–119. https://doi.org/10.1016/j.
solener.2019.03.005
6. Farid MM, Kanzawa A (1989) Thermal performance of a heat storage module using PCM’s
with different melting temperatures: mathematical modeling. J Sol Energy Eng 111:152–157.
https://doi.org/10.1115/1.3268301