Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Heater groove machined successfully
Accomplishments from Previous Week
Heater designed and the groove machined
Sump O-ring replaced and leakage test was successful
2.07 to 1.93 bar (30 to 28psi) in 5min
Main leakage is from the LN2 inlet because of not perfectly airtight valves on the sponsor provided cold gas mixing box
Pump test successful
Valve tests using Arduino and MOSFETs successful
RTD tests successful (0.06K difference between sensors)
Overtemp switch purchased
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish machining heating plate: inlet/outlet NPT: (team)
heating rod holes, vent holes, screw holes and lid
Finish assemble system (team)
Leakage test of entire system (team)
Mount overtemp switch (Yuting, Yanjun)
Mount RTD (Yuting, Yanjun)
Purchase pressure sensors (May)
Try to get cryogenic approval for lab space (Yuting, Yanjun)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Provided thermal paste for heating rod
Suggested moving heating rod lower
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
None received
Risks and Areas of Concern
Cryogenic approval for lab space
Resources or Information Required but not Available
Establish relationship between valve duty cycle and LN2 flow rate
how to test it?
or calculate it?
Schedule
Finish system setup and start controller design
Budget (list amount spent and amount remaining)
Spent: $1,772.51
Remaining: $1,427.49
Progress on Report and Webpage
Draft 1 Complete