Zeolite energy storage building heating

What is zeolite heat storage?

In the last years, an increasing interest in zeolite heat storages and appropriate zeolitic materials (e.g., 4, 5) could be recognized. Zeolite heat storages are chemical storages that promise to reach energy densities of 150–200 kWh m −3 and almost lossless seasonal heat storage 6.

Are zeolite-based heat storage processes based on binderless zeolites?

Binderless zeolites are able to adsorb a higher amount of water and consequently lead to a higher energy storage density than heat storages using zeolites with binder. Therefore, it is the aim of the presented work to develop a simulation model for zeolite-based heat storage processes using special binderless zeolites of type NaY.

Are zeolite-based heat storage a time and space dependent model?

The work can be concluded as follows: A time and space dependent simulation model of an adsorptive, zeolite-based heat storage with binderless zeolites of type NaY could be developed. It succeeded to adapt the model to the experimental results of a laboratory plant, satisfactorily.

How does zeolite 13X store heat?

Due to its special molecular structure, which contains well-defined microchannel and cavities, zeolite 13X can store heat by removing humidity and release heat when humidity is introduced to the compound, which gives zeolite 13X a unique heat storage property. The stored heat will be confined as long as no humidity is introduced to the system.

Why do zeolite heat storage systems have higher convective heat transfer?

This is due to the higher vessel inlet temperature of 40 °C and later 100 °C and, consequently, a higher convective heat transfer to the vessel in comparison to a vessel inlet temperature of 25 °C (Fig. 5). The present study aims to experimentally investigate appropriate operation parameters for a zeolite heat storage system in a laboratory plant.

Are zeolites a thermochemical storage solution?

In contrast, thermochemical storage enables thermal energy produced in the summer to be preserved for use in the cold winter. Zeolites are one such storage solution. Unlike water, zeolites do not store the heat directly – instead, the heat removes the water that is stored within the material.