Jump to content


Info only


No replies to this topic

#1 Guest_PhilipKukulski_*

Guest_PhilipKukulski_*
  • Guests

Posted 16 August 2010 - 02:19 PM

The PCM will cool if the temperature is over 70F,
and will give off heat if the temperature is under 70F.

STT-521-500 Saf-T-Temp Controlled Room Temperature (CRT) PCM Paks - 500g; 16 / carton
http://www.saf-t-sup...hopperRegionID=
$77.75

PCM = Phase change material
Phase Change = solid to liquid, or liquid to gas
or gas to liquid or liquid to solid
= = melting or freezing

If you rebag the 1000g PCM into two 500g packs, the rebagged 500g packs are $5.40 each.

My calculations
90F outside of the styrofoam box
1.5 inch thick x 8 x 10 x 10 styrofoam box
gains heat at a rate of 1W
PCM will absorb 210,000 J of heat energy
= over 29 hours of continual cooling.

But even better, the PCM only cools when it needs to
and can even recharge if the box gets cold overnight.



Reply to this topic



  


0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users