Oh I should say that 15 ml / min is OK, depending on what your expected heat output is. It is almost the "magic" 14.33 ml/min that gives you 1 degree / watt. My guess is that they may practically get to about +/- 50 mW with the system. I would worry that the hot glue and heat shrink may cause problem if something goes wrong. (and it usually does). D2
Date: Wed, 19 Jun 2013 15:51:59 -0400 Subject: Re: [Vo]:MFMP has built a flow calorimeter From: [email protected] To: [email protected] That's something. It is sort of the opposite of most calorimeters, but I guess it should work. It says: "Instead of measuring the exact mass flow rate, or the volume flow rate, however, we measure the heat capacity flow rate." What they mean is, they have a "metering heater." That's the second heater, placed in line just before the copper cell. It adds a precise amount of heat to the flow, and they measure the temperature rise from that. The next temperature rise -- from the copper cell -- can then be compared to the "metering heater" temperature change. The flow rate is only 15 ml/minute which makes me worry that the mixing may not be effective. There may be streamlines. They did give some thought to mixing, putting the sensors after right angle tube connections. - Jed
