The Clean Air team is working feverishly to develop the Pollution Removal Prize Design and want to solicit feedback from the community on what the final phase of testing can and should look like.
The (preliminary) way we imagine this going is as follows: teams submit paper proposals describing their solution, how it would work and what new innovation is embedded within. XPRIZE and our judging panel would review submissions and advance the most compelling/promising proposals.
Fast forward roughly 12-18 months and those promising/compelling solutions arrive at our semi-finalist testing facility. The semi-finalists’ solutions will be tested within an environmental chamber of approximately 100m3 for the ability to remove PMs and PM precursors (O3, NOX, SOX, NH3) from the chamber in a 30-60 minute period. In this round of testing, we want to validate that the team’s solution does in fact work and could, with additional work, meet the challenge of the final round of testing. We anticipate utilizing particle counters (to quantify the number of particles captured of different sizes) and other standard regulatory-grade air monitoring equipment to measure precursor levels before and after intervention. Judges would review the data and again select the most promising solutions to move onto the Finals.
(Note that these details are subject to change)
Fast forward another 12-18 months and teams show up at a different XPRIZE testing facility. Now we are playing with some ideas about how we want to do this, but curious to get the community’s thoughts.
- Outdoor testing - we’ve been thinking of this in two ways:
- true outdoor, live environment testing or
- an environmental testing chamber erected in a live environment and using outdoor air
How might we test the first example? We’ve been taking some cues from 'Urban-scale SALSCS, Part I: Experimental Evaluation and Numerical Modeling of a Demonstration Unit" and thinking a number of aerosol monitors in and around the solution might do the job, but what other avenues might we have to test and validate different types of removal systems?
- Scale - what if we skipped using outdoor air and instead performed another environmental chamber test, only substantially larger? Say 10x or 100x. What volume of air would be a significant achievement for a solution to clean in a period of time? Would proving new levels of large-scale indoor air pollution filtration move us closer to achieving ambient air pollution removal?