As the name implies, phase change materials are simply materials that change from one phase to another at a designated temperature.
One phase change material we all encounter on a daily basis is water. At 32 degrees F, water transitions from one phase to another. When water transitions from liquid into ice, or from ice to liquid, energy is stored and released in each direction. We see this at work in the way ice keeps a beverage cold.
Phase Change Energy Solutions has applied this same concept of storing and releasing energy, but has moved the transition temperature from 32 degrees F to the mid 70s. Our products add thermal mass to any structure, giving it the ability to hold designated temperatures for much longer lengths of time.
The BioPCM™ Difference
Simple, sustainable and cost-effective
BioPCM™ integrates smart phase change materials (PCM) into building structures. Unlike other PCM products derived from petroleum or salt hydrates, BioPCM is sustainable and cost effective, derived from abundant, bio-based materials. BioPCM absorbs and releases heat using phase change materials that melt and solidify at room temperature. When installed in ceiling and wall panels, the product works day and night to stabilize indoor temperatures.
This simple, passive approach:
- Saves energy
- Enables a more efficient HVAC system
- Extends operating lifetime of HVAC system
- Provides great comfort for building occupants
Results Speak For Themselves
Reducing temperature swings from 25 degrees to only 4 degrees
BioPCM makes a significant difference in the heating and cooling of a structure. The chart below shows actual test results from unconditioned structures located in Asheboro, NC. On a September day when the ambient temperature outside (black colored line) moved 37 degrees from 49 F at night to 86 F during the daytime, the control structure – without phase change materials - (rust colored line) moved 25 degrees inside, from 58 F at night to 83 F during the day.
We added our product to an exact same structure sitting 50 feet away (green colored line), where we see a temperature swing of only 4 degrees in the same 24 hour period. The significant temperature swing reduction – from 25 degrees to only 4 degrees – is due to the phase change material’s ability to absorb and store excess heat during the daytime hours (which in effect cools the structure), and to release that heat at night (to help warm the structure). As this heat is given off, the phase change material refreezes, readying itself to repeat the cycle the next day. The phase change material flattens the curve, which reduces energy consumption in a building with an HVAC system.