Pericritical Fluid Phase Control in Turbine Engines
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Solution Overview
Problem
Current technologies face challenges in monitoring and controlling the phase properties of pericritical fluids, such as supercritical and near-supercritical fluids, used in turbine engines, which affect engine operations and efficiency, particularly in thermal management and fuel systems.
Innovation Solution
A pericritical fluid system with sensors to detect phase properties and a control system to adjust conditions, utilizing phase detection sensors, temperature sensors, and pressure sensors to maintain desired phase states, ensuring efficient operation of turbine engines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pericritical fluids are used in turbine engines for thermal management and fuel systems, then engine efficiency is improved, but phase property control becomes difficult
Solution Approach 1:
The patent implements a feedback control system that continuously monitors phase properties (temperature, pressure, density) of the pericritical fluid and adjusts system parameters accordingly. Sensors detect actual phase state, and a controller modifies operating conditions to maintain desired phase properties, resolving the difficulty of phase property control while preserving engine efficiency benefits
Solution Approach 2:
The patent replaces direct mechanical phase control mechanisms with sensor-based detection and electronic control. Instead of relying solely on mechanical regulation, the system uses temperature sensors, pressure sensors, and density measurements combined with electronic control systems to manage phase properties, improving control precision and reducing mechanical complexity
2Temperature
If pericritical fluids are used to cool fluid streams or components, then thermal management performance is improved, but monitoring phase state becomes challenging
Solution Approach 1:
The patent employs a multi-functional monitoring system where temperature sensors, pressure sensors, and density measurements serve multiple purposes: tracking phase state changes, optimizing cooling performance, and controlling fluid flow. This universal approach to measurement enables precise phase state monitoring while maintaining superior thermal management performance
Solution Approach 2:
The patent introduces intermediate measurement parameters (temperature, pressure, density) that serve as proxies for directly measuring phase state. These intermediary parameters are easier to measure with standard sensors and provide sufficient information to control phase behavior, resolving the challenge of direct phase state monitoring while preserving cooling effectiveness
3Adaptability or versatility
If pericritical fluids operate near critical point, then fluid properties are optimized, but system stability decreases
Solution Approach 1:
The patent implements dynamic control of pericritical fluid operating conditions, allowing the system to adapt to changing operational requirements. The feedback control system continuously adjusts temperature and pressure to maintain optimal phase properties while preventing instability, enabling the system to operate near the critical point with enhanced stability through active dynamic management
Solution Approach 2:
The patent utilizes controlled changes in physical parameters (temperature, pressure, density) to optimize fluid properties near the critical point. By systematically varying these parameters within controlled ranges and using sensor feedback to monitor effects, the system achieves optimized fluid behavior while maintaining stability through precise parameter management
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 system effectively monitors and controls phase properties, enhancing the efficiency and reliability of turbine engines by maintaining optimal fluid states, thereby improving thermal management and fuel utilization.
Implementation Method 1
a pericritical fluid may be utilized in a near-supercritical or supercritical state to cool various fluid streams or components of the engine
Implementation Method 2
variations corresponding to a phase change in the pericritical fluid
Data Source
AI summary
A pericritical fluid system for a thermal management system associated with a turbine engine may include one or more sensors configured to generate sensor outputs corresponding to one or more phase properties of a pericritical fluid flowing through a cooling circuit of the thermal management system, and a controller configured to generate control commands configured to control one or more controllable components of the thermal management system based at least in part on the sensor outputs. The one or more sensors may include one or more phase detection sensors, such as an acoustic sensor.