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Solar Reactor Engine

Inventor: Robert L. Scragg
Year: 1979
Device: Solar Reactor Engine
Folder: scragg
Original: Open article
Confidence
0.60
Practicability
0.30
Evidence
0.40
Fringe Score
0.90
Risk
0.20
TRL
3

Goal

Generate large amounts of mechanical energy from a light-driven hydrogen-chlorine reaction, providing a low-cost, environmentally benign power source.

Problem

Dependence on fossil fuels, high energy costs, and environmental pollution associated with conventional energy generation.

Concept Summary

A reactor chamber receives hydrogen, chlorine, and oxygen. When exposed to ultraviolet light (solar or artificial), the gases undergo an explosive exothermic reaction that creates a high-temperature plasma of ionized hydrochloric gas. The reaction releases kinetic energy that can be harvested directly by turbines or modified internal-combustion engines, while the resulting hydrochloric acid is recycled back into hydrogen and chlorine. The system claims to produce several times more kinetic energy than conventional hydrogen-oxygen combustion and many times more than gasoline.

Principles

  • Photochemical activation of chemical reaction
  • Exothermic hydrogen-chlorine reaction
  • Direct conversion of reaction energy to kinetic energy
  • Closed-loop recycling of hydrochloric acid

Scientific Domains

Chemistry Physics Mechanical Engineering

Materials

  • Hydrogen gas
  • Chlorine gas
  • Oxygen
  • Hydrochloric acid
  • Silicon carbide blocks
  • Tungsten carbide tubing

Mechanisms of Action

  • Ultraviolet light induces H_2 + Cl_2 -> 2 HCl plasma
  • Rapid expansion of ionized gas drives pistons or turbine blades
  • Electrolysis or thermal decomposition recovers H_2 and Cl_2 from HCl

Energy Sources

Ultraviolet light (solar or artificial lamps) Solar radiation

Applications

  • Automotive power
  • Aircraft propulsion
  • Stationary power generation
  • Marine propulsion

Claimed Performance

Side-by-side tests reported kinetic energy up to 5x that of H_2-O_2 explosions and up to 14x that of a gasoline engine of equal size; thermal temperatures around 1,000 deg F.

Experimental Evidence

Tests using wooden-ball projectiles fired from a mortar with hydrogen-chlorine-arc radiation showed ~5x greater kinetic energy than hydrogen-oxygen-arc; patents filed describing reactor construction; reports of small engines (Honda motorcycle, Tecumseh appliances, custom turbine) operating on UV-induced H-Cl reaction.

Replication Status

Only two independent laboratories (including H.P. White Laboratory) are mentioned; no large-scale or peer-reviewed replication reported.

Limitations

  • Requires high-intensity UV light source
  • Handling of corrosive HCl
  • No demonstrated closed-loop operation at scale
  • Thermal management of 1,000 deg F reaction zone

Red Flags

  • Claims of perpetual motion and over-unity
  • Lack of peer-reviewed, independent replication
  • Reliance on anecdotal test data

Keywords

hydrogen-chlorine reaction ultraviolet light kinetic energy perpetual motion solar reactor closed-loop fuel cycle

Related Technologies

Internal combustion engine conversion Magnetohydrodynamic generator Solar concentrators

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