The One-Piece Aero-Slat

20" BOX FAN ONE-PIECE BLOCK

One Part. More Polymer. Same Money.

We kept removing pieces until only the useful ones were left. The result is a single molded block of high-capacity polymer that already contains the aerodynamic channels and the magnets. It snaps onto the front of any standard 20″ box fan.

No separate frame. No twenty individual slats to coat and assemble. Just one part that does the job.

“This is the purest Nash/Occam point we have reached: one part, more polymer, same money, higher real-world kilograms, lower cognitive load.”

Standard one-piece version: middle-of-the-road estimate 2.0–3.0 kg of CO₂ per month under continuous indoor use (~600 ppm).

Optional Extra-Strength version: the same block with a small percentage of inexpensive, non-toxic hydroxyl promoters (PEG, glycerol, sorbitol or similar) blended in during molding. These improve CO₂ diffusion and amine efficiency. Expected range 2.5–3.8 kg per month, with high-end possibility approaching 4 kg under favorable humidity and duty cycle.

The additive is optional, costs almost nothing, and keeps the rinse fully non-toxic.

Occam’s Chisel (Again)

We Fired a Few of Our Own Ideas

Earlier versions still had a nice wooden frame and a set of discrete coated slats. They looked good and they worked. But the frame and the coating steps were buying aesthetics and assembly time, not extra capture.

So we asked the same rude question one more time: what if the polymer itself became the entire shroud?

Still the only rule that matters:

“Entia non sunt multiplicanda praeter necessitatem.”

The molded block carries more active polymer in the same space, costs about the same, and asks less of the person who owns it. That felt like the honest next step. The optional hydroxyl blend is a quiet extra that stays true to the same spirit.

LEFT BEHIND SEPARATE FRAME 20 COATED SLATS EXTRA ASSEMBLY COATING STEPS KEPT ONE MOLDED BLOCK MORE POLYMER BUILT-IN MAGNETS SAME 20" FAN

Thermodynamics (Still Quiet)

THERMAL SWING 900°C ENERGY PENALTY VS MOISTURE / PASSIVE SWELL → RELEASE ≈ 0°C NO EXTRA HEAT

We Still Refuse to Boil Anything

High-temperature regeneration remains off the table. The polymer binds CO₂ when the air is relatively dry and lets it go when humidity rises or the fan stops long enough for local conditions to shift.

The equation we keep declining:

Q = m · Cp · ΔT + ΔHdesorption

The only electricity involved is the same electricity the fan was already using to move air around the room. That feels like the least dishonest energy story we can tell.

Kinetics & Constraints

More Mass, Same Airflow

A typical 20″ fan moves 1 500–2 000 CFM. At ordinary indoor concentrations that is several kilograms of CO₂ passing the face of the block every hour. Capture is still limited by contact time and the polymer’s ambient isotherm, but packing 400–500 g of active material into one molded piece improves the monthly total without raising static pressure.

Flow we already have:

Q ≈ 2 500–3 400 m³ h⁻¹

Mass transfer still holds:

NA = kc · (C – Cs)

The optional Extra-Strength version simply blends a small amount of low-toxicity hydroxyl promoter (PEG, glycerol, sorbitol or similar) into the polymer during molding. These improve diffusion and amine efficiency without changing the overall geometry or rinse chemistry.

BOUNDARY LAYER ON MOLDED WALL ONE-PIECE POLYMER SURFACE MOISTURE / PASSIVE CYCLE DRY +CO₂ WET RELEASE

Quiet Reality Checks

A few things we made sure were still true after the simplification.

1. Static Pressure

The channels are molded to the same open geometry that previously kept ΔP negligible. The fan continues to move roughly the same amount of air it always did. No new strain on the motor.

2. Regeneration

Still moisture-swing or gentle passive release. A short rinse every month or so, or simply letting the block sit when the fan is off, is enough. No high temperatures, no special equipment.

3. Capacity Honesty

Standard one-piece: middle-of-the-road 2.0–3.0 kg per month. Optional Extra-Strength (hydroxyl-promoted) version: 2.5–3.8 kg per month, with high-end possibility approaching 4 kg under good indoor conditions. These remain estimates pending measured data.

The Carbon Numbers

2.0–3.0 kg STANDARD 2.5–3.8 kg EXTRA-STRENGTH MONTHLY

Middle-of-the-Road with Headroom

By moving to a single molded block we increased active polymer mass without raising the bill of materials. That remains the main source of performance.

Continuous indoor estimates (~600 ppm):

Standard one-piece: 2.0–3.0 kg CO₂ / month

Optional Extra-Strength (hydroxyl blend): 2.5–3.8 kg / month

High-end possibility under favorable humidity and duty cycle: approaching 4 kg

These are grounded middle-of-the-road figures. Real-world results will depend on indoor conditions, cycling frequency, and the final polymer formulation.

The Optimistic Adoption Curve

From Living Rooms to Real Scale

Because the block simply snaps onto fans people already own, the path from first unit to meaningful numbers is unusually gentle. No new behavior has to be invented. The fans were already running.

Projected annual capture at scale (using ~30–36 kg CO₂ per unit per year as a middle-of-the-road average):

Year 1 — 10 000 units → ~300–360 tons

Year 5 — 1.5 million units → ~45 000–54 000 tons

Year 10 — 50 million units → ~1.5–1.8 million tons

Even at these moderate per-unit numbers, tens of millions of ordinary household fans start to look like a quiet, distributed contribution that did not require new land, new substations, or multi-year permitting fights.

That is still a hopeful number. It means ordinary people, without changing much about their lives, can still move the needle.

CUMULATIVE CO₂ YR 1 YR 5 YR 10 Quiet growth → real tons

Bill of Materials — One Piece

Everything That Remains

The parts list got shorter. Most of the money now sits in the polymer itself, which is the only component that actually captures carbon. The optional Extra-Strength hydroxyl blend adds almost nothing to the cost.

Component Function Est. Cost
Molded high-capacity polymer block Channels + sorbent in one shot $30–34
Optional hydroxyl promoter (PEG / glycerol / sorbitol type) Diffusion & efficiency boost $0.50–1.50
Insert-molded magnets (×4) Snap attachment $3.50
Optional surface finish / label Appearance $2–4
Packaging & handling $3–5
Target Total (either version) ≈ $45–50
EXISTING FAN ONE BLOCK

Upkeep — Minimal on Purpose

BLOCK BICARBONATE

The Entire Ritual

Once a month, or whenever it occurs to you:

1. Snap the block off

2. Rinse 30–60 seconds

3. Shake, let dry, snap back

That is the complete list. The runoff is dilute bicarbonate — mild, non-toxic, and slightly helpful to ordinary plumbing. The optional hydroxyl promoters do not change the rinse chemistry or safety profile.

Paris Agreement & Public Support

Small Nodes, Real Contribution

Industrial DAC plants are necessary. They are also slow to permit and expensive to build. A network of ordinary household fans wearing simple polymer blocks does not replace them, but it can start removing carbon while the larger projects are still in hearings.

Distributed and Quiet

No new substations. No new concrete. Just the fans people already run, doing a little more work than before.

Government Assistance Options

Because the units are low-cost, point-of-use, and produce a benign bicarbonate end-product, they fit cleanly into existing climate-policy tools:

  • Municipal or utility giveaway programs
  • State or federal tax credits / rebates
  • Inclusion in broader CDR procurement frameworks
  • Local air-quality or net-zero city programs

A modest public subsidy can make the block essentially free to households while still delivering measurable removal at far lower cost per ton than most centralized alternatives.

1.5°C

Eco-Friendly by Design

Low Impact from the Start

The one-piece Aero-Slat was deliberately kept simple so its environmental footprint stays small.

  • No new motors or electronics — it uses the fan that already exists in the room.
  • No high-temperature regeneration — zero extra process heat.
  • Benign end product — dilute aqueous bicarbonate.
  • Decentralized — no trucking of captured CO₂, no large industrial site.
  • Long service life — the polymer is robust; the only regular input is occasional tap water.

The optional Extra-Strength hydroxyl promoters (food- or cosmetic-grade PEG, glycerol, sorbitol types) are themselves low-toxicity and do not change the environmental profile of the rinse water.

Materials & End of Life

The polymer is chosen for ambient performance and chemical stability. At end of life the block can be recycled through ordinary polymer streams. Because it contains no heavy metals, batteries, or complex electronics, disposal risk remains low.

Small, quiet, and already living in the places people already are — that is a form of eco-friendliness that does not need a marketing brochure to explain itself.

Drawing & Claim

10 12 14 16 18 20 22 FIG. 1 — ONE-PIECE AERO-SLAT BLOCK

What is claimed is:

1. A point-of-use carbon-capture apparatus comprising an axial fan and a single molded polymer block magnetically attachable to the exhaust face of the fan, the block containing a plurality of open aerodynamic channels and a high-capacity moisture-swing or lightly functionalized polymer throughout its structure, optionally containing a minor amount of hydroxyl-containing promoter, configured to capture ambient CO₂ by boundary-layer contact and to release the captured carbon upon exposure to elevated humidity or liquid water.

Component Ledger

10Standard box-fan chassis
12Motor & hub
14Blades
16Exhaust plane
18One-piece polymer block
20Integrated channels + sorbent (± optional hydroxyl promoter)
22Outlet airflow

The claim language above is shown together with the drawing for convenience.

Questions We Expect

Practical

Will it slow the fan?

No. The channels are open by design. Airflow stays essentially the same.

How often do I have to rinse it?

Once a month is plenty. Longer intervals still work; the block simply saturates more slowly.

Is the rinse safe?

Yes. The released carbon leaves as dilute bicarbonate. The optional hydroxyl promoters are themselves low-toxicity and do not change that.

Curious

What is the Extra-Strength option?

A small percentage of inexpensive hydroxyl compounds (PEG, glycerol, sorbitol types) blended into the polymer. They help diffusion and efficiency. Expected gain is modest but useful, and the cost is negligible.

Can cities or governments help?

Yes. The low unit cost and benign chemistry make the blocks natural candidates for municipal giveaways, utility rebates, or broader climate-incentive programs.

Acknowledge

Diamond H Designs

INVENTOR: MICHAEL CHRISTOPHER CRICHTON HAWS

Patroness: St. Kateri Tekakwitha

Assisted by Grok

Ave Maria! | Deus Vult! | JMJ!

DISCLAIMER: Theoretical prototype. Yield figures are middle-of-the-road estimates based on published ambient capacities and practical polymer loading; high-end figures are possible under favorable conditions. No oceans were boiled.
Diamond H Designs. All rights reserved.