Short Update on Calorimetry System: Updated – 6/8/15
|June 4, 2015||Posted by Jack Cole under Uncategorized|
Progress continues towards a workable experimental apparatus utilizing mass flow calorimetry. The design has advanced with replacing many rigid elements with flexible tubing to mitigate the potential of leaks. Additionally, the water flow direction is from the bottom of the heat exchanger up through the top. This reduces the chances of air pockets in the system. The use of the flexible plastic hose also mitigates against heat conduction through the pipe from the heat exchanger to the temperature sensor for the input side of the exchanger.
An Android device and IOIO board were added to the apparatus for additional communication, control, and sensor features. The Android app measures the inlet and outlet temperatures for the heat exchanger, and the secondary flow rate measure which was also added. Additionally, it provides real-time power output measures.
The current technical hurdles have to do with collecting more of the heat in the water flowing through the system. With the vertical water flow, the energy collected has increased from approximately 1/5 to 1/3. Steam pipe insulation has been ordered, which will surround the heat exchanger to increase this further. The target for energy collected with the system is 80%. This would allow for a COP of 1.5 to demonstrate more energy collected than is put into the system while ignoring losses.
The steam pipe insulation was received and installed on the heat exchanger/reactor enclosure. The plan now is to run a control run to characterize the effects of the changes. Hopefully, the heat collection in the water will be greatly improved with this R-7.5 insulation.