Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Water loss testing will be based on temperature (solar loading - heat lamps), humidity (air-conditioning in closed room), and wind (heat fan)
Finalized Controlled test bed with 12 volt powered fan
We have done continued water loss testing via Arduino controlled environment
Accomplishments from Previous Week
We did multiple runs with silk bag with new controlled test environment
Able to get data and graphs on vapor pressure inside and outside of silk bag
Did further mass transfer analysis as well as test bed designs to model Darcy’s Law
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Albert/Jordan: Get website updated especially the Gantt Chart
Albert: Document closely any small or big comments or suggestions made by instructor or lead sponsor during meetings
Kevin: Create a prototype for Noryl Shading Structure
Dylan: Keep in contact with Todor for updates on project
Dylan: Go into GroundMetrics quarters to do Noise performance testing of sleeved bags
Everyone: Continue water loss testing using the 120mm Antec fan for circulating the air (lower humidity) for sleeved bags and prototype Noryl Shading Structure
Everyone: Create Sleeved bags if bags are not to be sewn (most likely)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments
· What other materials have we possibly come up with to test and our water loss test results
· Initial 30 Minutes: 183 mV (Silk) & 153 nV (cotton window)
· After 7 hours anti-static was bad noise performance wise (hit > 360 nV)
· Acceptable noise performance should be around < 200 nV for around 10 hours or so
· We will do continued testing of controlled environment test bed with the addition of fan
Instructor Comments from Last Meeting and Actions Taken to Address these Comments
There needs to be some research and proper test bed on mass transfer of the bag (some theoretical work to back up the experimental testing – better accelerate the test bed)
We constructed graphs for vapor pressure over time inside and outside of bag
Do as much necessary testing that seems reasonable (all possible causes of water loss)
Risks and Areas of Concern
What are we going to do to ensure that there isn’t too much heat seeping away from our water loss tested
Getting the new bag materials as fast as possible for testing (time is running out)
What will the noise performance be for the new sleeved, windowed bags
How are we going to ensure that there is less than 200 nV noise wise for around 10-12 hours
Resources or Information Required but not Available
Water loss rate for the prototype and company silk bags
What is the primary cause for water loss in the bag?
How well do the sleeved, windowed bags perform noise performance wise when tested with the actual sensors
Schedule
Do more rigorous controlled water loss testing on new bags
Create new Sleeved bags and prototype Noryl Shading Structure
Update Gantt chart.
Budget (list amount spent and amount remaining)
Currently, we have only used approximately $500 out of the $1000 so far.
Total cost of the bags were $83.93 (materials and fabrication accounted for)
We ordered the bulk of our controlled water loss testing equipment, which cost us $74.19
Kevin spent about $25 for the heat gun
$98.16 for sensors
$210 for new bag materials and adhesives
Progress on Report and Webpage
Update the Gantt Chart
Added diagrams to controlled test bed
Upload Weekly Progress Report
Work on 2nd Draft of Final Report Paper