SPACECOOL is a high-performance, highly durable, flexible optical film.
The SPACECOOL material not only blocks heat absorption from sunlight and the atmosphere but also dissipates heat by radiating it into space,
making it lower in temperature than the ambient air with zero energy consumption.
By taking advantage of naturally decreasing radiant cooling, our unique optical design enables the user to experience the highest level of radiative cooling performance in the world.
It blocks sunlight and suppresses heat absorption (heat shielding with a reflectivity of 95% or more), increases infrared rays in the wavelength range of the “atmospheric window*”, and dissipates heat by radiating it into space (radiative cooling with an emissivity of 95% or more) all at the same time.
*”Heat Shielding” defends against light energy such as sunlight by “reflecting” it.
*When light comes into a material, it either "reflects," "emits," or "transmits" (reflectivity + emissivity + transmittance = 100%). Therefore, it has been difficult to achieve both high reflectivity and high emissivity.
Heat energy on the earth's surface that absorbs sunlight is converted into light energy in the wavelength range of the "atmospheric window" and transported into frigid space, where it is -270°C.
Matter absorbs light energy and converts it into heat energy, which raises its temperature. Thus, light energy from the sun warms the earth's surface and makes it hot during the day.
SPACECOOL increases the radiative cooling effect by converting ambient thermal energy into light energy in the wavelength range of the "atmospheric window.”
Unlike conventional technology that inhibits heat input and slows heat transmission, this new material not only blocks heat from sunlight and the atmosphere to inhibit heat absorption but also releases heat into space, creating temperatures cooler than the atmospheric temperature.
Our engineers are conducting precise research and demonstration tests
to allow clients to fully experience excellent safety, comfort,
and economy of SPACECOOL.
They are carrying out research and testing on a daily basis
so that everyone can use the product without worry.
Solar reflective paint SPACECOOL
Reverse-side Temperature of Solar Reflective Paint Vs. Radiative Sky Cooling Material*
Cf) Solar reflective paint: Ambient air temperature +10 to 20°C, Steel plate: Ambient air temperature +40 to 50°C
*Reverse-side temperature of steel plates painted with solar reflective paint, and SPACECOOL
We conducted tests of radiative sky cooling tents compared to normal white tents.
We confirmed a difference of about -10°C in apparent temperature.* 1 *1 While the forehead temperatures of the subjects in the tents made from radiative sky cooling material were about body temperature, those in the regular tents were around 40°C. Thus, we confirmed a large difference in apparent temperature.
Apparent Temperature (Black body temperature)
| Radiative Sky Cooling Tent | Regular White Tent | |
|---|---|---|
| Thermography |  |
 |
| SubjectA | 36.5℃※2 | 40.0℃※2 |
| SubjectB | 35.5℃※2 | 40.5℃※2 |
| SubjectC | 36.0℃※2 | 40.5℃※2 |
| SubjectD | 36.0℃※2 | 40.5℃※2 |
| SubjectE | 36.0℃※2 | 40.0℃※2 |
| Impressions |
|
|
*2 Skin temperature (measured at head)
White storage sheds were wrapped in radiative sky cooling material for the test.
• Roof temperature: 20°C cooler than white cabinet.
• Temperature inside shed: Up to 10°C lower than initial conditions.
Up to 6°C lower temperature compared to storage shed fully insulated with glass wool as thermal solutions.
We applied radiative sky cooling materials to prefabricated houses for use at construction sites, and compared their electricity consumption with that of an untreated unit.
Electricity consumption from 9:00 AM to 5:00 PM was reduced 20% by presence of radiative sky cooling materials.
Our new material creates comfortable cooling while avoiding over reliance on using energy like electricity.
Protect important things from heat and allow everyone spend their days comfortable and safe.
