€€
MR> I vaguely remember coming across a furnace once that I think
vented
MR> steam and condensate to the atmosphere instead of
recirculating it. That
MR> could have only meant it was rather low pressure. As far as I
understand
MR> boilers, if it uses a safety relief valve, it requires some
IQ and a
MR> license to fix it.
Piping in refineries and chemical plants use that method for
keeping pipes from freezing. They run tubing along the pipe and
run steam through it and on the end is a steam trap which opens
every so many seconds and lets some steam or condensate out. They
also heat some outbuildings using a steamline to a radiator
or Modine with a steam trap on the end. ...Ken
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