At 10:26 AM 10/11/2011, Robert Lynn wrote:
Peristaltic pump NSF Model # CEP183-362N3 Serial # 060550065 Max output 12.0 liters/h Max press 1.50 barhttp://www.lmipumps.com/Files/lmi/Global/US-en/products/1713e.pdf
- So it was a maximum of 12 l/hr during cool-down, and if we take Lewan's numbers as a ratio -- 6 l/hr when stable.
- 12l/hr gives a maximum transfer rate of 8.8 kW -- close to the peak 7.6 kW recorded on the secondary.
If you know what the frequency is (the large thumping noise in all the videos about every second or so) then you can tell what the maximum flow rate is because the pump is only capable of deliverting 2ml per stroke.
Somebody said 40 strokes a minute (it's audible in Lewan's video) ... which makes 1.33 g /sec (4.8 l/hr) - fairly close to Lewan's 0.9
And there's probably some back-pressure.
Re: [Vo]:Rossi heat exchanger fitting / SOME flow data
Robert LynnMon, 10 Oct 2011 15:18:34 -0700
During Mat's walk through video I make it about 40+/-1 Hz, with same LMI P18 pump with 2ml max stroke (and back pressure of at least 1.3bar if making 124°C steam, pump is limited to 1.5bar) http://www.lmi-pumps.com/datasheets/Pseries-08-01.pdf, that would suggest at maximum 1.3g/s and probably less given close to maximum pressure. http://www.nyteknik.se/nyheter/energi_miljo/energi/article3284823.ece
