| # | Customer Requirement | Engineering Requirement |
|---|---|---|
| 1 | Capture CO2 as efficiently as possible • Capture the most amount of CO2 for the least amount of energy | • Maximize kg CO2 / Watt |
| 2 | Capture as much CO2 as possible • Capture as much CO2 as possible from the air pulled through the reactor | • Maximize kg CO2 / hour |
| 3 | Utilize Vacuum moisture swing • Utilize Vacuum pressures that allow water to vaporize with minimal heating to allow for a more efficient moisture swing |
• Operating pressure < saturation pressure • At 23°C saturation pressure is 2811Pa |
| 4 | Minimize water use • Recycle as much water as possible through the system | • <1 Liter added per cycle |
| 5 | Track the metrics of the apparatus as it runs • Position various sensors in critical areas to record pressures, temperatures and evaporation rates |
• ≥3 Thermocouples • ≥3 Pressure Transducers • ≥1 mass scale (for water) |
| 6 | Variable flow rate and pressure • Allow variation in operational conditions to allow for testing and optimization of various structures |
• ≥1 Variable frequency drive • ≥1 Adjustable valve • ≥1 Programmable logic controller |
| 7 | Maintain clean lab environment to protect experimental equipment • Avoid any contaminants such as oil and dust from interfering with sensors, pumps and other equipment |
• 0 oiled components • ≥1 filter on each inlet • ≥1 filter or trap before pump • ≥1 filter after sorbent bed |
| 8 | Keep design compact • The design must be a practical scale for small batch tests of experimental sorbents and fit within the available lab space. |
• <1m height and depth • <2m width |
| 9 | Utilize existing common vacuum parts • Most components should be selected from commercially available options to keep costs down, save time, and allow for future modifications or scaling. | • ≤3 fabricated components |