Applicability of New Calcium based Material for Thermal Energy Storage

Wenqiang Liu, Bo Feng, and Geoff X. Wang


Calcium Oxide, Thermal Energy Storage


The feasibility of applying novel calcium based sorbents in a chemical heat pump using a calcium sorbent/lead oxide/ carbon dioxide reaction system was examined. The sorbent was able to carbonate at 880 °C at 1 atm CO2 pressure and decomposed at 860 °C under 0.4 atm CO2 pressure, with reasonable rates respectively. The sorbent maintained a high conversion over 24 cycles, overcoming one of the major problems existing in the system when using natural calcium oxide.

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