I'm trying to find a Phase Change Material (PCM), but the entire industry is pretty one-minded when it comes to what it should be used for - energy storage. You can see by the wording of the Wikipedia article: https://en.wikipedia.org/wiki/Phase-change_material that they list advantages like "High volumetric latent heat storage capacity" and disadvantages like "Change of volume is very high" However, for my project, I'm actually trying to find the opposite! I'm looking for a PCM with large volume change but low heat storage capacity. Finding it really hard to google this as the industrial bias means everyone is looking the other direction, so I'm putting this out here. Anyone knows of any PCM, or broadly any PCM type, that fits this description? Thanks!