At 11:09 PM 4/2/04 +0800, you wrote:
>Hi All. - In the case of horizontal centre flue boilers -
Jim describes the ways of reducing or eliminating cross-tube problems
very well. I expand on those ideas to include increasing tube wall
thickness and careful location with respect to the heat source. Properly
done cross-tubes should be a win-win propositon. Another benefit that's
forgotten is that cross-tubes increase the internal volumn, not by much of
course, but some, and that's more than you would have without them. I
could be making the mistake of assuming that people could use more
water/steam space in their boilers.
Regards,
Harry
