Monthly Archives: April 2012

Week 4 Update

On the testing end, we continued troubleshooting the non-return valve.  So far, all the designs we’ve tested have been leaky!  Also, we’ve been measuring unusually low concentrations of chlorine with our set-up, despite our highest-ever chlorine stock concentration (0.66%).  The … Continue reading

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Week 4 Prototype Update

This week we tried out different check valves. Last week we prototyped a very crude check valve using a laser cut ring (thanks, Keegan!) and a yogurt top. This week we used this same design idea but substituted the yogurt … Continue reading

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Week 4

This week the evaluation team completed their first deliverable. We wrote a report describing different water disinfection methodologies and made the case for community-level chlorination. We touched upon many of the current approaches that exist at the government and point-of-use … Continue reading

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Week 3

This week we had a team meeting with Libby Wayman who helped us refine our product development strategy. The session was insightful, particularly when understanding best practices for maintaining ideas and organizing risk analysis/brainstorming. We established a set of criteria … Continue reading

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Week 3 Prototype Update

This week we finished our first deliverable – a technology review and recommendation. Also, we tried out another check valve design, the flap design. We made a very crude flap check valve using a laser cut ring and part of … Continue reading

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Week 3 Update

One of our running goals these past three weeks has been to design a custom, non-return valve for our pump so that out-flowing chlorinated water does not leak back into our water source and compromise our testing by resulting in … Continue reading

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Week 2

This week the prototype team started working on the first deliverable – the technology recommendation. We also designed another check valve to build and try out. The pop bottle and marble check valve works well to keep water flowing in … Continue reading

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