I was referring to the fact that the steam is condensing and not just loosing heat slowly along the entire distance. We know that the stream consists of entirely water some where near the end of the primary exchanger output port. The pipes from that point forth are in the form of a plumbing trap and hold liquid water throughout. Since the water traps steam somewhere within the exchanger, it seems like the active condensation region will change as the net flow into the condenser changes. Do you think that this active condensation region must vary with net flow? What happens as the net flow approaches zero as a thought experiment. The last point that allows condensation must finally get to the manifold as the remainder of the exchanger fills with liquid water. Am I wrong in thinking that the major heat transfer is due to condensation? This is a complicated issue but I am sure you can get it resolved.
-----Original Message----- From: Alan J Fletcher <a...@well.com> To: vortex-l <vortex-l@eskimo.com> Sent: Wed, Oct 26, 2011 7:26 pm Subject: Re: [Vo]:Manifold mispositioning makes measurements meaningless http://www.engineeringtoolbox.com/overall-heat-transfer-coefficients-d_284.html water-copper-air is 13.1 (W/m2 K) steam-copper-air is 17 And for flowing water/steam, I think that the MASS flow is what counts, not the volume flow, so there isn't a big transferdifference between the two.
