Version 1
: Received: 3 August 2018 / Approved: 3 August 2018 / Online: 3 August 2018 (15:53:56 CEST)
How to cite:
Sevault, A.; Soibam, J.; Haugen, N.E.L.; Skreiberg, Ø. Thermal energy storage in a stovepipe using phase change material: a numerical study. Preprints2018, 2018080076. https://doi.org/10.20944/preprints201808.0076.v1
Sevault, A.; Soibam, J.; Haugen, N.E.L.; Skreiberg, Ø. Thermal energy storage in a stovepipe using phase change material: a numerical study. Preprints 2018, 2018080076. https://doi.org/10.20944/preprints201808.0076.v1
Sevault, A.; Soibam, J.; Haugen, N.E.L.; Skreiberg, Ø. Thermal energy storage in a stovepipe using phase change material: a numerical study. Preprints2018, 2018080076. https://doi.org/10.20944/preprints201808.0076.v1
APA Style
Sevault, A., Soibam, J., Haugen, N.E.L., & Skreiberg, Ø. (2018). Thermal energy storage in a stovepipe using phase change material: a numerical study. Preprints. https://doi.org/10.20944/preprints201808.0076.v1
Chicago/Turabian Style
Sevault, A., Nils Erland L. Haugen and Øyvind Skreiberg. 2018 "Thermal energy storage in a stovepipe using phase change material: a numerical study" Preprints. https://doi.org/10.20944/preprints201808.0076.v1
Abstract
Batch combustion in wood log stoves is a promising application for latent heat storage (LHS), due to the transient heat production with high peak effects. The current study aimed at designing a compact, passive and durable LHS system storing a substantial part of the heat release during batch combustion and effectively releasing the stored heat to the room for 6 to 10 hours after the last batch. The LHS system consists of a coaxial cylinder located at the top of the wood stove, replacing part of the regular stovepipe. Internal metallic fins were applied as heat transfer enhancement to homogenize the temperature distribution inside the PCM. The effect of radial fin lengths was numerically investigated through a parametric study using five different fin lengths within the PCM. Using 35-mm fins in the 70-mm PCM layer yielded the best trade-off for the application. This configuration enabled achieving a slow but close to complete melting of the PCM within a realistic combustion duration, while avoiding overheating the PCM above its degradation temperature. Thereafter, the discharge allowed releasing the stored latent heat for 6 hours. The exhaust gas inlet temperature proved to have a strong influence on the PCM thermal performance.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
