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post Mar 7, 2014 - 4:36 PM
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Spider77



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The "fill in blank" raises boiling temp/point in a cooling system?
Im trying to put something together..thanks.
 
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post Mar 7, 2014 - 8:02 PM
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Syaoran



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In coolants, it's the ethylene glycol (an alcohol), also used to avoid freezing at below 30*F (that's why it's also known as anti-freeze).

The radiator cap, however, is what is used to increase pressure in the system. When water is submitted to a pressure higher than atmosphere, it boils at a higher temperature. It's something like 212*F at 1 atmosphere, 14.7PSI or 100kPa, or 1 bar. Submitting it to a higher pressure (most radiator caps increase pressure by 0.9bar which is like 12PSI) makes its boiling point higher. (something like 232* at 1.9bar)



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