THERMAL TESTS SCI-ALL

INTRODUCTION GOAL OF THE EXPERIMENT: Check thermal behavior of allcomp and scientific samples and compare the results. System:

INTRODUCTION ISSUES: Random results with no meaning. Unexpected behave when increase flow. Water takes more heat than heaters dissipate! POSSIBLE CAUSES: Sensor mistakes. Flow is not well mixed in the sensor point, heterogeneous temperature.

MODIFICATIONS System modification: We add a backwater element to get a well mixed flow in the sample exit. MEASURE POINT

RESULTS New results shows a coherent behavior: Smooth development, with no weird peaks. Higher pump power, higher heat absorb the water. System efficiency around 70 %. o We got some new pt100, we repeat the measures with them to cross the results. o Finally we have 3 measures at the same point (exit of the backwater tank), and we work with the average.

RESULTS

RESULTS

RESULTS

CONCLUSIONS For this experiment, thermal behavior is similar Are these results enough?  Experiment with low temperatures (TC variable?).  Using co2 as cooling fluid.  Irradiated behavior? For similar experiments, we have to ensure flow is well mixed at the measurement point. Backwater Tooling.

NEW SAMPLE

Experiments design: Compare results of simulations and experiments to estimate properties: o Thermal test with heaters and pt100 Estimation conductivity o Thermal test in oven with strain gauges Estimation of CTE Useful estimates to future simulations PRIORITY ??