P11462: Thermoelectric and Fan System for Cook Stove
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Flow Rate Variation Test

Through research into fan sizing and our stove pressure drop test we realized that providing the initial required airflow (1.2 kg/min) would be difficult. We were interested in specifying a lower flow rate. A water boil test was performed to better understand the added effect of the forced air. The time for 2 Liters of water to boil was recorded at 3 different flow rates: 20, 30, and 40 CFM. Before the tests were run the stove was run for 20 minutes to allow it to reach a thermal steady state.

Flow Rate Considerations
Starting Water Temp (degF) Flow Rate (CFM) Time to boil (min)
51.1 20 3:54
48.6 30 3:15
50.9 40 3:13

Based on these results we determined that the flow rate could be scaled back to about half of our initial specification.


Overall Heat Transfer Coefficient Test | Stove Pressure Drop Test | Flow Rate Variation Test | Beam Sizing Memo | Heat Sink Sizing Memo | Additional Mechanical Considerations | Proposed Design Screenshots | Thermoelectric I-V and Power Curves | Battery Sizing | Mechanical Detailed Drawings | Electrical Schematics | Bill of Materials | Preliminary Test Plans | Detailed Design Review Documents | Detailed Design Review Action Items | Managerial Design Review Presentation

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