Ice Maker

Ice Maker is a machine that freezes water into ice or snow. It will relocate the heat energy from the water until the water is -20 °C ice/snow. The ice maker heats up significantly but the total heat output is negative 3700 DTU/second. The DTU deleted per second does not change depending on the input water temperature though hotter water will take longer to become ice or snow.

It will start new production cycles as long as there is less than 300 kg of ice or snow in storage.

History: Before "the Automation Update" several years ago, the Ice Maker used to have no overheat temperature, so it could be used to achieve high temperatures. However, this has been addressed in a patch for the Automation Update, and it now has an overheat temperature.

Heat deletion:

The Ice Maker cools 40kg of Water at a rate of 0.16K/s.

We calculate the heat change in water as: SHC * ΔT * Mass : 4,179 (DTU/g)/C * -0.16C * 40kg = 26.75kDTU.

The Ice Maker produces +16k DTU/s this means we delete ~10.75kDTU/s while it's running.

Accounting for the heat it releases, the Ice Maker net cooling per watt is 44.77 DTU/W.

In comparison the Thermo Aquatuner would cool 10 kg of water at 14 K/s and consume 1200 W for 487.43 DTU/W. This is a transfer of heat form the water to the Thermo Aquatuner so net cooling is 0 DTU/W.

Pairing a Thermo Aquatuner cooling water with a Steam Turbine can delete ~923 DTU/W

Note that the Ice maker does not respect the usual hysteresis of water's freezing temperature: the water it contains will turn to ice/snow at exactly 0.6 °C.

This can be helpful early game. Especially since the heat can be removed from specific areas easily by moving the ice/snow into the vicinity and it's an easy way to turn duplicant labor into heat deletion.