Thread: Pumps and heat
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Unread 07-18-2002, 01:59 PM   #54
bigben2k
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Another bit, while I'm walking out of the tunnel...

Some people at OC (from the link posted in this thread) seem to think that an increased mass of water would make a difference. I disagree. Since we're inducing heat, in the form of a heat source (say 7 watts, for our little 1048), from its efficient part, the heat is "applied" to the water over time, regardless of the mass of the water, which can be translated into work.

This heat will be dissipated by the rad, as it achieves the balance point, between ambiant air, and the water temp. Since the rad dissipates the same heat, and reaches the same balance point, the increase in mass of the water would only delay reaching that balance point.

My other step-outside-the-tunnel is this: couldn't we calculate this heat, if we knew the exact (effective) flow rate?

Let's say that we have 100 gph. The work performed by moving 100 gallons of water over a time period of 1 hour, that can be calculated, can't it?

What if the density of the coolant was less (or more) than that of water? Would it make any difference? I'm guessing no, but why?
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