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  1. dctherandomguy

    Design of Simple -40 Freezer System with LN2 and Styrofoam

    The goal is to design an LN2 Freezer system that is portable and inexpensive as possible. I want to use Styrofoam (polystyrene) walls with a certain R-value to be built around a unit with a certain heat gain. The idea is to purchase components such as a tank, hose, (pump?), solenoid, and nozzle...

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