Hi Peter, It could only be a vacuum if they were pumping the water out of the heat dissipater and they'd need a pretty good pump to get a vacuum.
Colin On Wed, Nov 2, 2011 at 8:17 PM, <peter.heck...@arcor.de> wrote: > Hi, > > I recalculated the pipe diameter needed for the 1MW plant. > There is an important consideration that might have been missed by many: > > If all steam is condensed in the heatdissipator then we cannot assume air > pressure at the other end of the pipe. > In this case we must assume almost vacuum at the other side. > > If this is considered, we cannot use a steam pipe calculation for 1 bar. > We must assume 2 bar for the pressure difference. > So Rossis statement, almost airpressure at this point, where the > temperature was measured, could be true. > Also a inner pipe diameter of about 8.5 cm (as I have measured) could work > in this case. > > What do you think? > > Best, > > Peter > >
