156B Week 4

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

• • Assembled fittings for pump

  • Designed mixer

Accomplishments from Previous Week

• • Finished design of mixer, confirmed with Tom and Ian regarding fabrication

    • Drawings: Mixer.pdf

  • Tubing and fittings arrived

  • Fittings for the pump assembled

  • MOSFET for valve control soldered

  • Sump sealing test in progress

  • Pressure Relief Valve purchased 

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

• • Start machining sump (Zixuan Lan)

  • Assemble heater with overtemp switch and solid state relay (May Lu)

  • Finish sump sealing test (Yuting Huang, Yanjun Pan)

  • Drill and tap 6 1/4'' NPT on sump (Yuting Huang, Yanjun Pan)

  • Purchase 304 Stainless Steel Block for mixer (Yuting Huang)

  • Assemble system (All)

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

• • Sponsor will prvide epoxy for RTD mounting (1-23, in person)

  • Sponsor provided two heaters with different electrical power (1-23)

  • Sponsor will provide pressure regulator for LN2, and we will purchase pressure relief valve for LN2 (1-23)

  • Wiring diagram for pump revieved (1-24 email)

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

• • Wrap RTD with Gasket tape after epoxy applied (1-24 in person)

• Consider using vacuum jacket pipe for LN2 (1-24, in person)

  • Asked sponsor if they have any available

• Perform leak testing on sump (1-24, in person)

  • In progress of testing

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

• • None recieved

Risks and Areas of Concern

• • None

Resources or Information Required but not Available

• • Cryogenic lab safety approval

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • amount spent : 625.3

  • amount remaining: 2408.43

Progress on Report and Webpage

• • impact on society finished