Heat storage capability of a rolling cylinder using Glauber's salt

Abstract

SYNOPSIS Glauber's salt has been melt-refreeze cycled to store heat at 90.3°F in a laboratory sized rolling cylinder surrounded by a calorimeter. The quantitative results show: 1. Complete phase change.2. Theoretical latent heat release.3. Repeatable performance over 150 cycles.4. High heat release rates.5. High internal heat transfer rates.6. High heat exchanger surface temperatures.7. Acceptability of commercial source salts.8. Uniform freezing. Based on these measurements the rolling cylinder continues to be a prospective high performance thermal storage device. No technical barriers to further development were discovered.