Hybrid Power Generation on Mars Using Flash Steam
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Solution Overview
Problem
Mars presents a hostile environment for human habitation due to limited natural resources, making it challenging to establish a reliable and efficient power generation system for long-term human presence, as traditional methods like solar, wind, and nuclear power face logistical and environmental constraints.
Innovation Solution
A hybrid power generation method that combines auxiliary solar or nuclear power with locally available water ice, using the 'Mareekh Process' to extract and utilize water at high pressure and temperature for steam generation in turbines, leveraging the low Martian atmosphere for efficient power production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If solar power is used for power generation on Mars, then electrical energy can be produced, but the solar flux is low due to the greater distance of Mars from the Sun
Solution Approach 1:
The patent combines solar power generation with flash steam power generation in a hybrid system. The solar panels generate electrical energy during the day, while the flash steam system uses stored water and solar heat to generate additional power, compensating for the low solar flux conditions on Mars.
Solution Approach 2:
The solar system serves multiple functions: generating electrical energy directly through photovoltaic panels and simultaneously providing thermal energy for the flash steam generation process, maximizing the utilization of limited solar resources on Mars.
2Use of energy by moving object
If wind power is used for power generation on Mars, then electrical energy can be produced, but the atmosphere is too thin to generate useful force for wind turbines
Solution Approach 1:
The patent extracts and utilizes water ice from the Martian subsurface, converting it into liquid water and then into steam for power generation. This approach bypasses the limitation of thin atmosphere by using a fluid (water/steam) that can generate sufficient force under Martian conditions.
3Reliability
If nuclear power is used for power generation on Mars, then reliable electrical energy can be produced, but transporting nuclear fuel from Earth to Mars poses logistical challenges and safety risks
Solution Approach 1:
The patent utilizes water ice that is naturally abundant on Mars as the working fluid for power generation. This eliminates the need to transport fuel from Earth, as the system uses locally available resources (water ice, atmospheric CO2) to sustain itself, reducing logistical complexity and safety risks.
4Power
If water ice is melted and used for power generation, then sufficient power can be produced, but the low atmospheric pressure causes water to boil at low temperatures
Solution Approach 1:
The patent applies preliminary compression to the water before heating it, raising the pressure and consequently the boiling temperature. This allows the water to be heated to higher temperatures before flashing into steam, extracting more energy and generating sufficient power despite the low atmospheric pressure.
Solution Approach 2:
The patent changes the pressure parameter of the water from the low ambient Martian pressure to a high compressed pressure state, which fundamentally alters the phase change characteristics and enables high-temperature steam generation for efficient power production.
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
This method provides a reliable, efficient, and cost-effective power generation system by exploiting Martian water ice, enabling sufficient power production while also providing water for human consumption and other uses, thus supporting sustainable human habitation on Mars.
Implementation Method 1
a heater, wherein the auxiliary power source is electrically connected to the heater
Implementation Method 2
a pump, wherein the heater and the pump are operatively connected to one another
Implementation Method 3
the liquid water at high temperature and pressure, once extracted and exposed to the very low atmospheric pressure on Mars, will explosively evaporate and expand, generating sufficient power to run steam turbines for electricity generation
Implementation Method 4
generating sufficient power to run steam turbines for electricity generation
Implementation Method 5
The present invention utilizes an auxiliary power source, such as solar panels
Implementation Method 6
or limited nuclear power using RTGs or modified SMRs
Data Source
AI summary
In a method of hybrid power generation in an environment with a gas pressure below the earth's atmospheric pressure, liquid water is extracted from a subsurface water ice deposit by pumping superheated-supercritical fluid heated by a heater through an extraction well into the subsurface water ice deposit in order to form a liquid water reservoir. Liquid water is pumped from the liquid water reservoir through the extraction well to the buffer tank. The liquid water is pumped from the buffer tank into a high pressure feeder system (HPFS) and a low pressure feeder system (LPFS), which are each also heated by the heater. The HPFS outputs supercritical water and the LPFS outputs flash steam into a combined injector and the mixture is injected into a turbine at near environmental pressure. This mixture explosively expands into superheated steam and passes through the turbine, powering an electrical generator.