This bundle is smaller but thematically tight: unglazed solar collectors, geographical variation, and perihelion. It reads like a geometric and seasonal refinement of the earlier collector work, with more attention to why performance changes by place and time of year.
| Family | Files | What they contribute |
|---|---|---|
| Geographical variation | 1 PDF | Location-sensitive collector behavior. |
| Unglazed collectors | 1 PDF | Collector form factor and surface behavior. |
| Perihelion | 1 PDF | Seasonal / orbital framing. |
| Sunmen | 1 PDF | Baer's 2004 manifesto on sun-work, IR scanners, and anti-subsidy philosophy. |
collector geometry + latitude + orbit = performance context
The bundle is a raw-source summary, not a conclusion page. It preserves provenance for the file family and points to the compiled concept pages that already distill the ideas.