Sustainable Thermal Management
PureTemp™ bio-based PCM technology from Entropy Solutions uses by-products of vegetable oil production in place of petroleum-based paraffin.
Janet Bealer Rodie, Managing Editor
PureTemp™ PCMs are microencapsulated for incorporation into a fabric, or macroencapsulated for topical application.
Photo courtesy of Outlast Technologies Inc.
According to Entropy Solutions President Eric Lindquist, PureTemp PCMs offer higher levels of latent heat - stored heat that is released or absorbed when a substance changes from one state to another - than comparable paraffin-based PCMs, and those higher levels translate into improved thermal-regulating performance. "The ability to achieve higher latent heat is tied to purity levels," he said. "PureTemp is 98- to 99-percent pure. Paraffin comes from crude oil, and the more refined it is, the more expensive. In paraffin, that level of refinement would be extremely expensive - 12 to 15 times the cost of PureTemp."
Lindquist said PureTemp is offered in 210 different temperature ranges, as opposed to only about 20 for paraffin-based PCMs, which are limited by the paraffin's carbon chain makeup.
PCM product developer and marketer Outlast Technologies Inc., Boulder, Colo, uses PureTemp for some of its PCM temperature-regulation solutions. Melbourne, Fla.-based Glacier Tek Inc. is using the liquid-filled packs in its RPCM® Cool Vest products sold to military and police agencies, and its Chilly Dog® vests for working dogs.
For more information about PureTemp™ PCMs, contact Entropy Solutions +952-941-0306, www.entropysolutionsinc.com.