Applying heat to zeolite pellets that are saturated with water causes the pellets to dry and absorb heat. When the pellets are rehydrated, the absorbed heat is released. This physical effect makes them suitable for use in heat storage systems. In this application too, says Adler, "the efficiency of the process depends on the thermal conductivity of the zeolite material. It is often necessary to install very complicated heat-exchanger units, which are expensive and reduce the volume available for actual heat storage. The metal-encapsulated packing material could be a valuable improvement here. In the laboratory, we have been able to significantly shorten the heat storage cycle time."
Now that the researchers have demonstrated the feasibility and functionality of the encapsulation technique in the lab, they want to move on to the next step on the way to industrial application. "We need to further optimize the material and the manufacturing process, and gather data so as to determine exactly to what extent the advantages of higher thermal conductivity outweigh the additional costs of metal encapsulation," says Adler.
The chemical industry uses large quantities of packing materials as catalytic support media and adsorbents. A catalyst is a substance that accelerates a chemical reaction without undergoing any chemical change itself. An adsorbent removes and stores specific products of a chemical reaction. As well as being used to optimize chemical reactions, packing materials also play a role in modern heat storage systems. In a packed bed reactor, a gas or liquid flows through the material and triggers a chemical reaction on the surface of the tiny particles.
Applying heat to zeolite pellets that are saturated with water causes the pellets to dry and absorb heat. When the pellets are rehydrated, the absorbed heat is released. This physical effect makes them suitable for use in heat storage systems. In this application too, says Adler, "the efficiency of the process depends on the thermal conductivity of the zeolite material. It is often necessary to install very complicated heat-exchanger units, which are expensive and reduce the volume available for actual heat storage. The metal-encapsulated packing material could be a valuable improvement here. In the laboratory, we have been able to significantly shorten the heat storage cycle time."Now that the researchers have demonstrated the feasibility and functionality of the encapsulation technique in the lab, they want to move on to the next step on the way to industrial application. "We need to further optimize the material and the manufacturing process, and gather data so as to determine exactly to what extent the advantages of higher thermal conductivity outweigh the additional costs of metal encapsulation," says Adler.The chemical industry uses large quantities of packing materials as catalytic support media and adsorbents. A catalyst is a substance that accelerates a chemical reaction without undergoing any chemical change itself. An adsorbent removes and stores specific products of a chemical reaction. As well as being used to optimize chemical reactions, packing materials also play a role in modern heat storage systems. In a packed bed reactor, a gas or liquid flows through the material and triggers a chemical reaction on the surface of the tiny particles.
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