Potassium carbonate energy storage

Can potassium carbonate be used in heat storage applications?

In this study, the use of potassium carbonate in heat storage applications is investigated experimentally. The most important objective is to form a kinetic model for the de/re-hydration reaction of the material. In order to do so, it is crucial to understand the behavior of the salt when it reacts with water vapor.

Can potassium carbonate be used as thermochemical heat storage in salt hydrates?

Thermochemical heat storage in salt hydrates is a promising method to improve the solar fraction in the built environment. One of the most promising salt hydrates to be used as thermochemical material is potassium carbonate. In this study, the use of potassium carbonate in heat storage applications is investigated experimentally.

Can potassium carbonate be used as a thermochemical material?

One of the most promising salt hydrates to be used as thermochemical material is potassium carbonate. In this study, the use of potassium carbonate in heat storage applications is investigated experimentally. The most important objective is to form a kinetic model for the de/re-hydration reaction of the material.

Is potassium carbonate toxic?

Potassium carbonate (K 2 CO 3) is an abundant and non-toxic chemical with many applications. (1) With the growing need for CO 2 neutrality and sustainable energy solutions, K 2 CO 3 has gained interest both as a thermochemical material (TCM) for domestic heat storage (2) and as a CO 2 capture material. (3)

Why is potassium carbonate a good salt hydrate?

2.1. Potassium carbonate The interest in potassium carbonate has been sparked by its easy availability and subsequently low price (around 0.50 € /kg ), high capacity for water uptake and energy storage density, better chemical stability than other salt hydrates, low corrosiveness and non-toxicity.

What is the state of hydration of potassium carbonate?

The material used in this study is the pure salt (Sigma–Aldrich) in powder form ( 500 − 1000 µm particles) and the state of hydration for the material in the container is 1.5 moles of water per mole of potassium carbonate (sesquihydrate K 2 CO 3 · 1.5 H 2 O  ).