Liquid Nitrogen Engine Phase Change Propulsion
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Solution Overview
Problem
Existing propulsion systems relying on fossil fuels face environmental damage and depletion issues, and alternative energy systems like solar and wind power are impractical for applications like motor vehicles due to size and complexity constraints.
Innovation Solution
A propulsion engine utilizing liquid nitrogen's phase change from liquid to gas to generate propulsive force, where air is drawn through a casing with a constriction, causing rapid evaporation and expansion of nitrogen, driving a continuous stream of air and fans to produce a steady propulsive force, with adjustable components for environmental adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If fossil fuels are burned to generate thermal energy, then mechanical energy is produced, but environmental damage occurs and fuel supplies are depleted
Solution Approach 1:
The patent utilizes the phase transition of nitrogen from liquid to gas form. Liquid nitrogen is introduced into the combustion chamber where it rapidly evaporates, absorbing heat and creating a pressure differential that drives the piston. This phase change provides the necessary mechanical energy without combustion, eliminating harmful emissions while maintaining power output.
Solution Approach 2:
The patent replaces the traditional thermal-mechanical energy conversion system (combustion engine) with a phase-change-driven mechanical system. Instead of burning fuel to create thermal energy that converts to mechanical energy, the system uses liquid nitrogen evaporation to directly create pressure differentials that drive mechanical motion, eliminating the need for combustion and its associated environmental harms.
2Use of energy by moving object
If solar or wind power systems are used to generate energy, then alternative energy is provided, but large expensive structures are required
Solution Approach 1:
The patent extracts the essential energy-generating function from complex large-scale structures like solar panels and wind turbines. By using liquid nitrogen stored in a simple tank that evaporates on demand, the system provides alternative energy generation in a compact, portable form factor suitable for mobile applications, eliminating the need for large stationary structures.
Solution Approach 2:
The patent changes the physical state of nitrogen from liquid to gas to generate propulsive force. Liquid nitrogen is stored in a compact tank and introduced into the combustion chamber where it rapidly evaporates, creating pressure differentials that drive the piston. This phase change enables energy generation in a compact system without requiring large structures.
3Force
If liquid nitrogen is introduced into the bore, then rapid evaporation and expansion occur providing propulsive force, but system complexity increases
Solution Approach 1:
The patent employs a system where the expanding nitrogen gas automatically drives the piston and crank mechanism without requiring external control systems. The phase change of nitrogen provides self-regulating pressure that drives the mechanical components, reducing the need for complex control systems while maintaining effective propulsive force generation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The engine provides a lightweight, inexpensive, and environmentally friendly propulsion system that maintains a steady propulsive force as long as liquid nitrogen is supplied, adaptable to varying conditions without the need for large structures.
Implementation Method 1
utilizing the energy provided when liquid nitrogen undergoes a phase change from liquid to gaseous nitrogen
Implementation Method 2
causing rapid evaporation and expansion of nitrogen
Implementation Method 3
exchanges heat with heat energy of another substance
Implementation Method 4
a continuous stream of air passes through the bore
Data Source
AI summary
An engine is described that derives its propulsive energy from the flash expansion of liquid nitrogen from a liquid form to a gaseous form. The gaseous nitrogen is forced to escape from the rear of a casing of the engine, thereby providing a propulsive force to the casing. The escaping gaseous nitrogen, mixed with air, is harnessed to rotate a first fan that in turn rotates a second fan that draws air into the front of the engine. The warmer air flowing through the engine is utilized to regulate the temperature of the engine, and to facilitate the evaporation of the nitrogen propellant, thereby creating a steady state condition that may last as long as the supply of liquid nitrogen.