Phase change energy storage tank design requirements

What is a phase change energy storage tank?

Unlike traditional phase change energy storage tanks, in which PCMs are uniformly distributed across the water tank, the PCMs in the new design are centrally arranged on one side, and a vertical baffle is provided to divide the water tank into a phase-change zone and a non-phase-change zone.

Is npcwt a good design scheme for phase change water tanks?

This demonstrates that the new approach is a reasonable, feasible, and efficient design scheme for future phase change water tanks. With the increase in inlet flow rate, the heat storage and release time of the NPCWT is shortened. And the smaller the flow rate, the more significant the influence it has on heat storage and release.

How do energy storage tanks work?

Energy storage tanks use water as the heat storage medium, and the most common approach to heat storage is sensible heat storage.

How does a non-phase change zone affect heat transfer time?

At the same time, although the temperature rise of the non-phase change zone is slower, the baffle also increases the path the hot water must travel, lengthening the amount of time it stays in the water tank, thus, increasing the amount of time available for heat transfer time from the water to the PCM.