TERRA2Addendum₅₆SVRU4Loop

This Addendum formally discloses two novel extensions to the ALLFROMAIR® TERRA² Tri-Generation Platform, superseding all draft versions of Addendum 5 and Addendum 6. The disclosures are presented with thermodynamically verified calculations for two primary climate scenarios: Desert (40°C/30%RF) and Tropical Max (40°C/80%RF). The first disclosure — SVRU4 Cascade Condensation — establishes a fourth condenser unit (SVRU4), constructed identically to SVRU1, positioned at the exhaust of Module 2 after SVRU3. SVRU4 condenses water from the moisture-saturated exhaust stream (32–34°C/100%RF) using seawater or a night-cooled buffer as cold medium. This produces an additional 172,000–280,000 L/day in desert and 213,000–322,000 L/day in tropical conditions depending on cold medium temperature. The second disclosure — Diurnal Thermal Loop — establishes that the desert night wet-bulb temperature (15.4°C at 22°C/50%RF) enables near-zero-energy pre-cooling of a buffer tank via evaporative cooling. This buffer supplies SVRU4 with cold medium at 17–18°C, substantially improving SVRU4 yield. Night-time compressor operation at COP 4.8 (+72% vs. daytime COP 2.8) enables optional deep cooling of the buffer to 8–12°C. A key architectural refinement is disclosed: HX4 (heat pump evaporator/scavenger) is repositioned to operate after SVRU4 on the cooled exhaust air (22°C), improving heat pump COP by 60–101% compared to operation on uncooled exhaust (32–34°C). SVRU4 construction is identical to SVRU1 (Heresite P-413, 316L SS, direct condensation on cold surfaces), using the standard TERRA² component set without new technology.