Heat transfer in a latent heat storage device with finned annular tube heat exchanger
Abstract
The present investigation is concerned with an investigation of latent heat storage systems for low-temperature applications in the temperature range from 20 to 80 C. The investigation has the objective to study the melting and solidification characteristics of phase-change materials on a theoretical and on an experimental basis, taking into account the behavior of the materials in a storage device which represents a new passive heat exchanger concept. Every element of the storage device consists of an interior and an exterior tube. Good possibilities for heat transfer between the exterior and the interior tube are provided by longitudinal fins which connect the two concentric tubes. The space between the tubes is filled with the phase-change material. A numerical analysis was performed with the aid of the finite difference method. A test model was provided for the experimental study, and the motion of the phase boundary during the charging and the discharging process was observed.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1982
- Bibcode:
- 1982PhDT.........8A
- Keywords:
-
- Annular Ducts;
- Finned Bodies;
- Heat Exchangers;
- Heat Storage;
- Heat Transfer;
- Latent Heat;
- Phase Change Materials;
- Low Temperature;
- Melting;
- Numerical Analysis;
- Performance Prediction;
- Solidification;
- Fluid Mechanics and Heat Transfer