Compressor Intake Fog Detection and Dynamic Coalescer Control
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Solution Overview
Problem
Gas turbine engines face performance issues due to contaminants like fog and dust, which lead to excessive pressure loss and increased maintenance and operational costs from the full-time fitment of coalescers.
Innovation Solution
A system with detectors, including chilled mirror hygrometers and laser detection systems, to accurately detect fog and dust conditions, coupled with a controller that activates control measures such as active coalescers only when necessary, reducing the need for constant coalescer fitment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coalescers are fitted full time at gas turbine inlets, then fog and dust conditions are continuously filtered, but differential pressure increases and maintenance requirements increase
Solution Approach 1:
The system dynamically activates coalescers based on real-time detector signals indicating fog or dust conditions, rather than maintaining continuous operation. This dynamic control allows the system to provide protection only when contaminants are present, reducing unnecessary differential pressure effects during clean conditions.
Solution Approach 2:
The detector system automatically monitors conditions and triggers coalescer activation without requiring continuous manual intervention or full-time operation. The system serves itself by detecting when protection is needed and activating the appropriate control measures autonomously.
2Reliability
If coalescers are fitted full time at gas turbine inlets, then continuous protection from contaminants is provided, but operational costs increase
Solution Approach 1:
The system uses periodic detection and activates coalescers only during specific periods when contaminants are detected, rather than maintaining continuous operation. This periodic activation pattern reduces energy consumption and operational costs while maintaining necessary protection levels.
Solution Approach 2:
The system changes the operational parameter of coalescer activation from continuous to conditional based on detector signals. This parameter change allows the system to optimize between protection levels and operational costs by activating control measures only when contaminant parameters exceed thresholds.
3Productivity
If detectors are installed to detect fog and dust conditions, then targeted activation of control measures is enabled, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical continuous filtration with a simpler detection-based control system that activates mechanical coalescers only when needed. This substitution uses optical or electronic detectors to monitor conditions and trigger mechanical responses, reducing overall system complexity while improving efficiency.
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 protects gas turbine inlets from contaminants, reducing maintenance requirements, operational costs, and differential pressure impacts by enabling targeted activation of control measures based on real-time contaminant detection.
Implementation Method 1
a detector configured to detect a fog condition within an air flow directed toward a compressor
Implementation Method 2
detectors, including chilled mirror hygrometers
Implementation Method 3
laser detection systems, to accurately detect fog and dust conditions
Implementation Method 4
laser detection systems, to accurately detect fog and dust conditions
Data Source
AI summary
A system includes a detector configured to detect a fog condition within an air flow directed toward a compressor. The system also includes a controller coupled to the detector, wherein the controller is configured to activate a first control measure in response to the fog condition.