Investigation on Long Term Operation of Thermochemical Heat Storage with MgO-Based Composite Honeycombs

Investigation on Long Term Operation of Thermochemical Heat Storage with MgO-Based Composite Honeycombs

Blog Article

The efficient storing and utilizing of industrial waste heat can contribute to the reduction of CO2 and primary energy.Thermochemical heat storage uses a chemical and/or an adsorption-desorption Collections reaction to store heat without heat loss.This study aims to assess the long-term operational feasibility of thermochemical material based composite honeycombs, so that a new thermochemical heat storage and peripheral system were prepared.

The evaluation was done by three aspects: The compressive strength of the honeycomb, heat charging, and the discharging capabilities of the thermochemical heat storage.The compressive strength exceeded 1 MPa and is sufficient for safe use.The thermal performance was also assessed in a variety of ways during 100 cycles, 550 h in total.

By introducing a new process, the amount of thermochemical-only charging was successfully measured for the first time.Furthermore, the heat charging capabilities were measured at 55.8% after the end of the experiment.

Finally, the heat discharging capability was decreased until 60 cycles and there was no further degradation thereafter.This degradation was caused by charging at Containers and Jars a too high temperature (550 °C).In comparative tests using a low temperature (450 °C), the performance degradation became slow, which means that it is important to find the optimal charging temperature.