Report overview
The report was compiled by Ayaa Maggay, Kathryn Olson, Bindi Patel, and Aakash Datt. - the device consists of two chambers separated by an aqueous chemical solution of sodium acetate trihydrate
- claim that this device may be reused once water evaporates; this needs verificationthe sodium acetate may not stay in its trihydrate state after the water dries up
- some thermo calculations indicate they will add nearly 500g of reagent ($30) to keep the box cold for 12hrs in 38degC ambient temperature
- 6mL of water would need to be added to the system every 20 minutes in their worst case scenario
- the device would be heavily insulated ($20 worth of sytrofoam blocks for each box)
- thermo calculations completed to determine cooling and insulative effects
Comments
The large quantity of reagent required and the need to rehydrate the device frequently are certainly drawbacks. The device has not been built yet but it seems quite feasible and well thought out. It would be worth contacting the group to see if they ended up building a prototype. | 