I think the basic problem is that the duty cycle of the compressor is nowhere near what it needs to be, for a tank chiller. Typically your fridge compressor runs for a little while, then the inside is cool, and the motor "rests" while the fridge stays cool until the temperature rises just a wee little bit, and the cycle begins again.
In the case of the tank, the temperature is always warmer than the temperature setpoint of the fridge. So the motor is always running, it never gets that "off" part of that cycle.
So in the end, it works, but only until the motor burns out.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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