Air drying system and method therefor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air drying systems for aircraft fail to effectively reduce moisture accumulation on cold surfaces, leading to water vapor condensation and the resulting freeze/thaw cycle, which reduces operational life of aircraft components, affects passenger comfort, and increases operational costs.
Innovation Solution
An air drying system comprising a compressor, first turbine, and second turbine, where the second turbine is driven by a pressure differential, powering the compressor and first turbine to produce dry air that reduces moisture condensation within the aircraft by injecting it between insulation and the exterior skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If zonal dryers or crown ventilation are used to dry air in the crown area, then the air in the crown area is dried, but moisture accumulation on cold surfaces is not reduced and water vapor condensation still occurs
Solution Approach 1:
The patent extracts water vapor from the air stream using a centrifugal separator before the air is recirculated or vented. This removes the harmful moisture component while preserving the drying function, preventing condensation on cold surfaces without requiring additional heating or desiccant systems.
Solution Approach 2:
The system uses pneumatic principles by utilizing the existing air pressure differential between the crown area and cabin to drive airflow through the drying system. The compressed air from the aircraft's pneumatic system powers the centrifugal separator, eliminating the need for external motors or power consumption.
2Object-affected harmful factors
If air drying systems are installed to reduce moisture, then moisture accumulation is reduced, but the system increases device complexity and operational costs
Solution Approach 1:
The system serves multiple functions using existing aircraft systems: it utilizes the aircraft's pneumatic compressed air for power, the existing air circulation paths, and the pressure differential between compartments. This multi-functionality reduces the need for dedicated power sources and control systems, simplifying the overall installation.
Solution Approach 2:
The air drying system operates autonomously by harnessing the aircraft's own pneumatic pressure and existing air flow patterns. The system self-regulates based on natural pressure differentials without requiring external control systems, motors, or additional power consumption, thereby reducing complexity.
3Quantity of substance
If conventional air drying methods are used, then air in the crown area is dried, but energy is consumed without effectively preventing freeze/thaw cycles
Solution Approach 1:
The system converts the naturally occurring pressure differential between the crown area and cabin into useful work by driving the centrifugal separator. This transforms what would otherwise be wasted pressure energy into the driving force for moisture separation, eliminating the need for external power input while effectively removing water vapor to prevent condensation and freeze/thaw cycles.
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 reduces or eliminates water vapor condensation, extends the operational life of aircraft components, enhances passenger comfort, and decreases operational costs by using energy harvesting during cruise flights and supplemental power during other phases.
Implementation Method 1
the second turbine being driven, at least in part, by an air flow caused by a pressure differential between the second air inlet and the second air outlet
Implementation Method 2
a compressor coupled to a first air inlet through which moist air is received
Implementation Method 3
a first turbine in fluid communication with the compressor and coupled to a first air outlet through which dry air is expelled
Data Source
AI summary
An air drying system including a compressor coupled to a first air inlet through which moist air is received, a first turbine in fluid communication with the compressor and coupled to a first air outlet through which dry air is expelled, and a second turbine coupled to a second air inlet and a second air outlet and being driven, at least in part, by an air flow caused by a pressure differential between the second air inlet and the second air outlet, where the second turbine is operably coupled to the compressor and the first turbine by a drive mechanism so that rotation of the second turbine drives rotation of the compressor and the first turbine.