MANY MINDEDHeat-storing gels show promise for building temperature regulation
Texas A&M University researchers created salogels—polymer gels loaded with hydrated salts like calcium chloride hexahydrate—that store thermal energy through melting and crystallization cycles. These materials retain 80-95% of the heat storage capacity of pure hydrated salts and have been tested in model houses using sodium acetate trihydrate gels in floor pipes and 3D-printed wall coatings. In controlled experiments, salogel-coated structures maintained temperature stability during phase change cycles, though specific temperature differences versus control buildings were not quantified in the source material.
The technology operates by absorbing excess heat during warmer periods and releasing it gradually during cooling phases, potentially reducing reliance on active heating or cooling systems. Current applications are being evaluated for passive building integration (roofs, walls, windows) and dynamic HVAC modules, but technical barriers include leakage risks in unencapsulated salts, humidity sensitivity, and durability concerns over repeated cycles.
If scaled effectively, salogels could lower heating and cooling costs for buildings globally by improving energy efficiency. However, the source explicitly notes that model test results do not yet translate to real-world energy savings, and polymer-salt interactions remain poorly understood for large-scale deployment. The next critical steps involve simulation/AI modeling to optimize formulations and address environmental constraints before field trials can quantify actual cost reductions.
What to watch: Leakage prevention in manufacturing, climate-specific performance, and whether building design integration can overcome current scalability limitations.
Source: New Atlas