The heat exchanger will not work as well when horizontal (the condensate water will not drain out nicely and the steam will not pass in parallel through all channels equally due to pressure gradient from top to bottom of stack), but it will still work - just with greater pressure drop and inconsistent flow, and the outlet from the steam side will not be as cold as it could be. It means that there might be an extra 5-10% heat energy leaving unnecessarily in hot water from the steam outlet, but that doesn't make much difference to the overall calculations.
The key issue we have been discussing ad-nauseum is the bad placement of the outlet thermocouple and the possible contamination of the outlet thermocouple reading by heat leakage through the brass manifold from the hot steam condensing in the brass manifold inlet. We know (approximately) the flow rates on the primary steam inlet side and the cold water secondary outlet side, but as far as the heat leakage in that brass manifold is concerned the heat exchanger is totally irrelevant - you only need the brass manifold with the same steam and water flows and the same thermocouple placement to determine what that heat leakage temperature contamination is. I still can't find the brass manifold anywhere on the SWEP website. If anyone could find me proper engineering drawings or a CAD model for that manifold I could do a pretty accurate FEA analysis to get a good estimate of the temperature contamination. On 11 December 2011 14:57, Peter Heckert <[email protected]> wrote: > Am 11.12.2011 15:15, schrieb Robert Lynn: > > The key is the brass manifold - the heat exchanger is unimportant. But I >> have not seen the Brass manifold anywhere on their website. >> > I dont think the heatexchanger is unimportant. > I got the heater applications handbook from SWEPS website. > http://www.swep.net/index.php?**tpl=page0&lang=en&id=168<http://www.swep.net/index.php?tpl=page0&lang=en&id=168> > It comes as an exefile. > > Here is a screenshot about condensing applications: > http://hphsite.de/vortex/SWEP-**handbook.png<http://hphsite.de/vortex/SWEP-handbook.png> > > I think Rossi did it perfectly wrong and the exchanger cannot work in > horizontal orientation. > SWEP has also a software to calculate heatexchangers. It calculates > everything, flowrates,delta_t and pressures. > Possibly somebody could try it, it is free. > > Best, > Peter > >
