156B Week 7

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Heater machining successful

Accomplishments from Previous Week

• • Physical system

    • Heater machining successful

  • Electronics

    • Pump test successful (3550 RPM at no load)

    • Connectors for valves done

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Purchase pressure sensors (May)

  • Install RTD (all)

  • Purchase LN2 (all)

  • Connect all parts (all)

  • Test Leakage of entire system (all)

  • Cycle system with CDA (all)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Pressure sensors with -40C should be OK (await final confirmation)

    • use T junction and copper coil to warm up gas before reaching sensor

  • LN2 Dewar has pressure relief valve for hose (ask for spec sheet from Airgas)

  • Control the heating plate to some reference temperature to achieve inlet gas temp of -150C

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Control heating plate temperature instead of gas temperature

  • More work on report

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • None

Risks and Areas of Concern

• • Mounting RTD on heating plate

    • Somewhere not too close to heating rod

    • Current thought: instead of middle of plate, mount two at each end of plate and take average

Resources or Information Required but not Available

• • None

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent: $1,772.51

  • Remaining: $1,427.49   

Progress on Report and Webpage