imported>Chris Day |
imported>Chris Day |
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| Figure 1. Labyrinth (L and M) Calorimeter and Cell developed by McKubre ''et al.'' at SRI. The entire calorimeter is contained in a vacuum Dewar to isolate it from the surroundings. Water flows into the inner region after its temperature is measured where it enters. After passing by and completely covering the wall of the electrolytic cell, it exits through a mixing tube, designed to insure that the measured temperature represents the average. Gas in the cell makes contact with a catalyst to insure all of the O2 and D2 is returned to the cell as D2O. Loss or gain of gas is measured external to the cell. The D/Pd ratio of the Pd cathode is measured using its resistivity, which is determined using the 4 probe method. Heating wire is wrapped around the electrolytic cell to maintain constant temperature and to allow calibration. The device was demonstrated to be accurate and stable to better than ±50 mW.
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