if i mix 40 gallons of 50 degree water and 40 gallons of 80 deg. water, does that make it 65 degrees?

Question

i’m just wondering how fluid & heat transfer works, if you mix water that is 20 or 30 degrees apart in temperature does the hot or cold have an advantage or does it meet in the middle and equalize?

In: 6

Answer 1

Yes, and if you mix 3 parts boiling water with 2 parts cold water or milk from the refrigerator you get `(3*212°F+2*36°F)/5 = 141°F` perfect temperature beverage.