The correlation between the number of fins and the discharge time for a finned heat pipe latent heat storage system
✍ Scribed by Bogdan Horbaniuc; Aristotel Popescu; Gheorghe Dumitraşcu
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 219 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0960-1481
No coin nor oath required. For personal study only.
✦ Synopsis
The concept of a solar energy heat pipe latent heat storage system is presented. Iu order to assure large charging aud discharging rates, finned heat pipes are used to transfer heat to and from the phase-change material (paraffin in this case). The evolution of the solid -liquid interface is studied by considering the radial heat transfer (due to the heat pipe wall) and the angular one (due to the fin). Two mathematical models, corresponding to exponeutial, respectively polynomial functious describing the fin temperature profile are preseuted aud the results are compared. The two models allow the evaluation of the discharge time of the storage unit for a certain number of fms for a single heat pipe. When the discharge time has a fixed value, the methods presented in the paper allow to con&de whether the number of fins is suffkiently large to assure the complete solidification of the phase-change material.