On Thu, Dec 8, 2011 at 12:54 PM, Robert Leguillon < [email protected]> wrote:
> This is exhausting. You're going to blindly believe any evidence > supporting your conclusion, and if I were to give you 10 distinct reasons > that the thermocouple placement is crap, you'll try to dismiss one, and > assume it negates the rest. > Rossi is using a herringbone liquid counterflow heat exchanger. It is > meant for recovery of heat between two liquids. Even without phase change, > it is difficult to produce point-specific analysis. It is worth mentioning > that there are companies that produce proprietary software to analyze the > liquid heat transfer in these units, and it's not something that Google > calculator can do for free. So, I'm going to oversimplify this by > design.<SNIP> etc. etc. > Thanks for that, Robert. I hope Jed reads it with care several times. I am a bit surprised he didn't know about counterflow. I've mentioned it here before and assumed he knew how it was laid out. I even linked the Wikipedia entry about it. If you want to measure an accurate T out of the secondary circuit with such a device, it has to be done preferably inside the liquid and the thermocouple *must* be placed some distance downstream of the secondary outlet and away from the hot parts of the heat exchanger and also away from the steam pipe leading to the primary fluid loop input. Rossi, some would say by intent, did not do that.
