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A NIVAL ceramic rainscreen facade in full sun

NIVAL — Passive cooling systems

Cooling cities
without cooling
the planet.

A passive ceramic skin that rejects heat before it enters the building — no refrigerant, no facade compressor.

Explore the technologyInvestor overview
Refrigerant at the facade
0
Peak surface temperature
−12°C
Peak cooling load
−28%

The problem

The hottest part of the city is the city itself.

Roofs, asphalt and blank facades store solar heat, then release it back when people need relief most.

+4.2°CIllustrative peak surface heat uplift / dense block
  • Roofs

    Dark membranes hold solar gain long after sunset.

  • Asphalt

    Paved ground stores heat and re-radiates it at night.

  • Blank facades

    Sealed envelopes push the whole load onto compressors.

Aerial thermal visualization of a dense urban block, with one hot city block rendered in orange against cooler blue surroundings
Illustrative visualization; not tied to a measured building.

The insight

Cooling starts too late.

Conventional systems remove heat after it has crossed the envelope. NIVAL moves the cooling event to the skin.

Conventional
Solar heatEnergy arrives
Hot skinSurface stores heat
Indoor gainHeat crosses inward
CompressorMachine removes it
NIVAL skin
Solar heatEnergy arrives
Cooling skinEvaporation rejects heat
Lower gainLess heat crosses inward
Smaller peakSystem demand falls

Move the cooling event from the machine to the material.

Conceptual process model. NIVAL is a speculative portfolio concept.

Next

See how the material does the work.

A modular rainscreen tile combines porous ceramic, a capillary wick and a standard rail cassette.

The technology