Removable Aircraft Air Conditioning System Using Segmented Modules
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Solution Overview
Problem
Aircraft, vehicles, and confined spaces often lack air conditioning systems, especially when engines are off or during high-altitude flights, and existing systems are expensive to install and maintain, necessitating a portable and efficient air conditioning solution that can be added or removed as needed.
Innovation Solution
A modular air conditioning system comprising a cooler module for the isolated compartment and a heat exchanger module for the vented compartment, connected by fluid couplings and a voltage control unit to adjust compressor speed based on available power, allowing operation without the engine running and easy installation/removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional air conditioning system is installed in an aircraft, then air conditioning capability is provided, but installation cost and maintenance complexity increase significantly
Solution Approach 1:
The air conditioning system is divided into separate modular components: a condenser unit that can be installed in the aircraft and an evaporator unit that remains outside. This segmentation allows the aircraft to have air conditioning capability without integrating a complete complex system, reducing installation and maintenance complexity while maintaining functionality.
2Temperature
If the aircraft engine is running to power the air conditioning system, then cooling is provided, but fuel consumption increases
Solution Approach 1:
The system uses waste heat from the aircraft engine exhaust to drive the condenser, eliminating the need for dedicated engine power to run the air conditioning. The engine's exhaust heat, which would otherwise be wasted, is utilized to cool the cabin, reducing additional fuel consumption while providing cooling capability.
3Use of energy by moving object
If the aircraft engine is turned off to reduce fuel consumption, then fuel efficiency improves, but air conditioning capability is lost
Solution Approach 1:
By separating the condenser (inside aircraft) from the evaporator (outside aircraft), the system allows the evaporator to be powered by external sources or waste heat when the engine is off, maintaining cabin cooling capability while improving fuel efficiency during ground operations or idle periods.
4Reliability
If air conditioning systems are permanently installed in aircraft, then cooling is always available, but removal for FAA inspection becomes complex
Solution Approach 1:
The modular design with separate condenser and evaporator units allows the external evaporator to be easily removed or disconnected during FAA inspections. The internal condenser remains installed for continuous cooling availability, while inspection accessibility is improved by the ability to quickly remove or isolate the external component.
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
Enables efficient air conditioning in confined spaces without engine power, reducing energy consumption and maintenance costs, and meeting FAA regulations by being easily removable for inspections.
Implementation Method 1
The condenser is positioned to receive ambient air and reject heat to the ambient air
Implementation Method 2
The condenser is positioned to receive ambient air and reject heat to the ambient air
Implementation Method 3
an evaporator positioned within the isolated compartment
Implementation Method 4
an evaporator positioned within the isolated compartment
Implementation Method 5
a compressor positioned within the vented compartment
Data Source
AI summary
An air conditioning system that is designed to be retroactively added to, and removed from, an existing aircraft, vehicle, boat or similar confined space. The air conditioning system includes a cooler module that is carried into a first compartment to circulate and cool the air. The cooler module contains a condenser, an evaporator and a compressor. A heat exchanger module is mounted into a vented second compartment. The heat exchanger is capable of exchanging heat with the ambient air. The heat exchanger module is connected to the cooler module with tubes that contain a heat exchanger fluid. In order for the tubes to pass through a compartment barrier, fluid couplings are mounted through the barrier. The tubes connect to the fluid couplings on either side of the barrier. A control unit is provided within the pressurized cabin and/or cockpit for controlling the operations of the cooler module.