Re: The question is too vague

Posted by jdemarisj on March 22, 2005 at 08:35:41 from (209.23.28.47):

In Reply to: Re: The question is too vague posted by Bob/Ont on March 22, 2005 at 03:55:29:

I didn't see the prior discussion, but it doesn't change physics. I've heard similar
hot-water, cold-water freezing questions for years. I also know that there is still some
degree are argumentation on the matter, even among experts in the field. Due to that
situation, we did some "real world" experiments when I was in college studying physics
and water science. So, we did some tests of simply putting water in a freezer at various
temperatures and container sizes. Hot water does NOT always freeze first, period.
Now, take the actual case of hot water pipes usually freezing before cold water pipes do,
when side by side and experiencing the same ambient temperature. From what you have
said, the hot water actually takes on a memory of its own, and since it is losing heat faster
than the cold water pipe at the outset, even once it gets to the exact same temperature at the cold
water pipe, it persists with its accelerated rate and freezes first. I don't believe it, and
there are many people more knowledgeable then I that also don't believe it.
From what I've observed, read, and/or studied - the freezing pipe situation occurs
because cold water retains more gas than warmer water - and this situation lowers the
freezing point of cold water. In the pipe situation, we conducted a test using 1/2" copper
type L pipe, the two pipes parallel to each other and 12" apart. Air temperature was 8
degrees F, and surface temp. of the pipes was checked every 15 minutes. Water was not
run though either of the pipes during the test. The cold water pipe cooled down slighty
faster than the hot water pipe, but the hot water pipe froze first - this because the water
within it had a slightly higher freezing point.

Follow Ups:

• Re: The question is too vague Bob/Ont 18:29:49 03/22/05 (0)

Post a Followup Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]