Thermal energy storage - overview and specific insight into nitrate salts for sensible and latent heat storage.

Nicole Pfleger,Thomas Bauer,Claudia Martin,Antje Wörner,Markus Eck

doi:10.3762/bjnano.6.154

Abstract

Thermal energy storage (TES) is capable to reduce the demand of conventional energy sources for two reasons: First, they prevent the mismatch between the energy supply and the power demand when generating electricity from renewable energy sources. Second, utilization of waste heat in industrial processes by thermal energy storage reduces the final energy consumption. This review focuses mainly on material aspects of alkali nitrate salts. They include thermal properties, thermal decomposition processes as well as a new method to develop optimized salt systems.

Highlights

Thermal energy storage (TES) is achieved by different techniques (Figure 1): sensible heat storage, latent heat storage and chemical heat storage. appears to be latent
Thermal energy storage (TES) is capable to reduce the demand of conventional energy sources for two reasons: First, they prevent the mismatch between the energy supply and the power demand when generating electricity from renewable energy sources
This review focuses mainly on material aspects of alkali nitrate salts

Summary

Introduction

Thermal energy storage (TES) is achieved by different techniques (Figure 1): sensible heat storage, latent heat storage and chemical heat storage. appears to be latent. Salt systems differ by important properties such as melting temperature and thermal stability which define the lower and upper limits of usable temperature in sensible heat storage systems. For sensible heat storage at elevated temperatures (T > 100 °C) molten salts are most suitable.

Results

Conclusion