Phase Change Matters RSS


The award-winning Phase Change Matters blog tracks the latest news and research on phase change materials and thermal energy storage. E-mail tips and comments to Ben Welter, communications director at Entropy Solutions. Follow the blog on Twitter at @PureTemp. Subscribe to the weekly PCM newsletter. Or join the discussion on LinkedIn.




Patent application: Engineered foam and foam mattress with PCM

Ben Welter - Thursday, March 19, 2015

Sealy patent application 20150067967U.S. patent application 20150067967 [Assignee Sealy Technology LLC]: 

"In accordance with one aspect of the disclosure and inventions, there is provided engineered foam for use as a layer in a foam mattress construction having multiple layers including a top layer of foam and at least one additional layer of foam, and a coating of phase change material applied to a top surface of the top layer of foam. Surface application of phase change material to a top surface of a top layer of foam of a foam mattress provides more efficient transfer of heat away from a body on the mattress and reduced heat accumulation at the body-mattress interface."

Patent application: Cooling apparatus using solid-liquid PCMs

Ben Welter - Tuesday, March 10, 2015

Patent application 20150060017: "The cooling apparatus includes a pipeline, a housing enclosing the pipeline, and the solid-liquid PCM filling in an interior of the pipeline and a space between the pipeline and the housing. The solid-liquid PCM can contact a heat source and absorb the heat generated by the heat source, so as to transform from solid state to liquid state. The solid-liquid PCM in the liquid state can circulate inside the pipeline and the space between the pipeline and the housing. Thus, the heat is dissipated by the means of thermal convection. Meanwhile, the heat also can be dissipated through the housing. Therefore, the heat dissipation can be achieved by thermal conduction and heat convection simultaneously."

New patent: Thermal energy storage device

Ben Welter - Wednesday, March 04, 2015

U.S. patent 8966902, "Storage and recovery of thermal energy based on counter current principle of heat transfer medium transportation": "A thermal energy storage device is provided. The device has a heat exchanger arrangement for guiding a flow of a heat transfer medium between a first end and a second end of the heat exchanger arrangement, and a heat storage material surrounding the heat exchanger arrangement."

Patent application: Composite construction panels and applications

Ben Welter - Friday, February 27, 2015

U.S. patent application 20150056404 (assignee Phase Change Energy Solutions Inc.):

"In some embodiments, a composite construction panel comprises a substrate layer, a cover layer separated from the substrate layer by one or more spacers, and at least one mat disposed between the substrate layer and the cover layer, wherein the mat comprises at least one phase change material disposed in at least one phase change region."

Patent application: Heat recovery system incorporating PCMs

Ben Welter - Tuesday, February 24, 2015

U.S. patent application 20150047579:

"A heat recovery system arranged to heat water includes at least one heat exchanger arranged to heat water by heat exchange with waste heat. ... A preferred type of heat storage unit for this aspect of the invention are those containing phase change materials in order to access the latent heat associated with phase change."