Wednesday, November 18, 2009

Meeting: Nov. 16th Highlights

meeting time: Monday, Nov. 16th
team present: Kevin Hawkins, Justin Khan, Skyler Olsen

topics discussed:

- there are three weeks left in the senior design time frame and much is left to be completed. some of the most important aspects left to finish include:

- circuit design for charge controller and compressor speed control
- finalizing refrigeration design including figuring out exact high and low side pressures
tube lengths, a way of cooling the condenser, a way to cool the thermal mass (water-glycol
mix)
- completing the budget

- justin and i discussed what is needed from an electrical standpoint. this included the charge controller, the compressor controller, and safety monitors (under/over charge, leaks, ice over requiring manual defrosting, etc).
- kevin and i discussed solid models and methods of graphic interpretation
- i stated that i would continue to work on a complete model for the refrigerator and proving different systems mathematically. i am going to submit a requirement change/add document that states the maximum allowable milk added to the fridge daily (currently it is theoretically 40L but after the change it will be fixed to 15-17L).

Below is a brief sketch of our design thus far:


Our time is dwindling but everything should be fine if we put our heads together and invest some time into the project. I look forward to working with everyone.

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