Thermal energy storage (TES) is an advanced technology that could address the energy supply-demand balance in building air conditioning systems. TES is also important in view of the increasing utilisation of solar energy. Although sensible heat storage systems and latent heat storage systems have been heavily researched and are widely used domestically and industrially, thermochemical heat storage (THS) systems are currently undergoing a surge in research and development. Recent studies suggest that THS has significant advantages when compared with the other heat storage methods including higher storage density, lower volume requirements, low heat loss (approaching zero), and lower charging temperature. On the other hand the complexity and higher investment costs remain the main obstacles to rolling out these systems commercially. A comprehensive review has been presented here into all aspects of the current, state of the art THS research. It includes comparisons with other storage methods, description of absorption/adsorption cycles, the materials used in these systems and open/closed storage methods, as well as chemical heat pumps. Recent advances in the field are also investigated and discussed.

The latest advancements on thermochemical heat storage systems

Thermal energy storage and conversion aims to improve the high inefficiency of the industrial processes and renewable energy systems (supply versus demand). Chemical sorption processes and chemical reactions based on solid–gas systems are a promising way to store and convert thermal energy for heating or cooling applications and, thereby to increase the efficiency of the processes and to reduce the greenhouse effect. Although more efforts are required to bring this technology to the market, some important breakthrough have been made regarding to system efficiency. Over the last two decades, the experimental research in this field has increased largely to validate these advances under practical conditions. Therefore, this paper gives a state-of-art review of performances obtained under practical conditions by the different prototypes built over the last two decades. In addition, the main advantages and disadvantages of solid–gas chemical sorption processes and chemical reactions are summarized.

Thermochemical energy storage and conversion: A-state-of-the-art review of the experimental research under practical conditions

https://pure.tue.nl/ws/files/51662523/1_s2.0_S0306261916319316_main.pdf

Sorption heat storage for long-term low-temperature applications: A review on the advancements at material and prototype scale

A critical review of high-temperature reversible thermochemical energy storage systems

Gas–solid thermochemical heat storage reactors for high-temperature applications

Adapting the MgO-CO2 working pair for thermochemical energy storage by doping with salts

Reactivity enhancement of chemical materials used in packed bed reactor of chemical heat pump

Thermochemical storage performance of a packed bed of calcium hydroxide composite with a silicon-based ceramic honeycomb support

https://onlinelibrary.wiley.com/doi/pdf/10.1002/est2.53

Seon Tae Kim

Papers

Adapting the MgO-CO2 working pair for thermochemical energy storage by doping with salts

Reactivity enhancement of chemical materials used in packed bed reactor of chemical heat pump

Thermochemical storage performance of a packed bed of calcium hydroxide composite with a silicon-based ceramic honeycomb support

Composite material for high‐temperature thermochemical energy storage using calcium hydroxide and ceramic foam

Optimization of magnesium hydroxide composite material mixed with expanded graphite and calcium chloride for chemical heat pumps