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Old 01-24-11, 08:35 PM   #503
AC_Hacker
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Quote:
Originally Posted by Drake View Post
Is your heat pump design reversible to "cool" radiant floor in summer?
Where I live, the days you need AC in a year are very few.

Quote:
Originally Posted by electrostunt View Post
Cooling a room with running cold water in a radiant floor is not very efficient. You get a really cold floor in a hot room... (heat rises... )
Technically, hot air rises, heat radiates in all directions. I hate to be picky, but by thinking that "heat rises", it is possible to overlook some important ideas and solutions.

Quote:
Originally Posted by electrostunt View Post
You can use a fan convector as the common choice.
Yes, I'm considering that one.

Quote:
Originally Posted by electrostunt View Post
There is also some test being done by putting the floor pipes and heat spreaders in the ceiling and running cold water in it. This should not be used for heating, as that would be inefficient.
I have read that the Germans are employing the ceiling-cooling approach in office buildings, and it is working very well. The trick is to monitor temperature and humidity so as to avoid condensation on the ceiling.

-AC_Hacker
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