Superior Heat Capacity (Thermal Mass)

Water has a much higher specific heat capacity than air. This means water can absorb significantly more heat energy from your body without its own temperature rising quickly.

• Technical Fact: Water can store approximately 4 times more energy per kilogram than air.

• Result: It acts as a powerful "thermal sponge," effectively pulling heat away from your skin much faster than any fan or air-based system.

Thermal Conductivity (Heat Transfer)

Water is a far better conductor of heat than air. Air is naturally an insulator (which is why double-pane windows and down duvets work).

• Technical Fact: The heat transfer coefficient of liquid is up to 25 times higher than that of air.

• Result: Because the cooled water flows through the topper directly beneath you, there is an immediate thermal exchange. This creates a cooling sensation that air-based products simply cannot achieve.

• Efficiency of the TEC-Engine The TEC semiconductor (Peltier module) inside the KOZ-E unit requires a medium that can quickly transport the "cold" to the bed.

  • Technical Fact: Using a liquid-cooled loop allows the TEC chip to operate at peak efficiency. The water carries your body heat back to the unit, where the aluminum heat sink dissipates it into the room air.

  • Result: The system functions as a high-performance heat exchanger, continuously "dumping" your body heat outside the bed.

To achieve the same cooling effect with air, you would need massive, high-speed fans that are very noisy.

• Technical Fact: A small, brushless DC water pump can move a massive amount of thermal energy silently.
• Result: You get maximum industrial-grade cooling with a decibel level low enough for deep sleep.

Stable Thermal Buffer Air cooling is volatile and changes with the room temperature. Water provides a stable thermal mass.

• Technical Fact: Once the water in the 2-meter circuit reaches your set temperature (e.g., 18°C), it maintains that state with very little fluctuation.
• Result: A constant, "rock-solid" temperature throughout the night, unaffected by how much you move or how warm the room becomes.