[AR] Re: Peltier specifications

  • From: "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Tue, 04 Aug 2015 00:50:10 -0700

Just use antifreeze? But yeah Peter a refrigerator system would be my
next choice.

A related question: Any simple ways to equalize temperature between
the top and bottom of the rocket's oxidizer tank???

Yeah fill it fast and launch it! With like a 1" line or whatever you
need to fill the tank in 15 seconds prior to flight. Use a float valve
to shut off the fill solenoid valve and open a Purge valve when that
line hits zero psi you get a disconnect go and all that's automatic you
then get a green light. Push the button!

Should take less than 30 seconds to fill and fly. (not counting the 30
seconds to chill with CO2)

Just saying.




-------- Original Message --------
Subject: [AR] Re: Peltier specifications
From: Peter Fairbrother <zenadsl6186@xxxxxxxxx>
Date: Mon, August 03, 2015 6:40 pm
To: arocket@xxxxxxxxxxxxx


On 04/08/15 02:33, Mark C Spiegl wrote:
Wow... Im out of the office for a day and my inbox is full! :-)

Anyway.. Anyone who has followed my hybrid projects knows Im a fan of
high density Nitrous. Im looking to cool 20-50 lbs of Nitrous to
25-ish degF.

Modify a domestic refrigerator/deep freeze. Or use it unmodified to cool
salt water, and pump the cooled salt water around the nitrous.

You can freeze stuff with a peltier, just about - but probably not in
the desert. They don't do large temperature differences well.


A related question: Any simple ways to equalize temperature between
the top and bottom of the rocket's oxidizer tank???

bubble gas in the bottom? Or stir.


-- Peter F

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