VTOL Cabin-Avionics Airflow Layout for Redundant Cooling
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Solution Overview
Problem
Existing air conditioning systems in moving objects, such as aircraft, face issues with avionics equipment cooling failures and waste heat discharge inefficiencies.
Innovation Solution
A dual air conditioning system with separate circulation paths for passenger and component compartments, along with a heat utilization circuit to harness waste heat for cabin heating and a redundant cooling system to ensure continuous component cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If avionics equipment is cooled by air discharged from the cabin through a single discharge flow path, then the cooling system is simple, but the system reliability decreases when failure occurs in the discharge flow path
Solution Approach 1:
The cooling system is divided into two independent flow paths: a first flow path for the passenger compartment and a second flow path for the component compartment. This segmentation ensures that failure in one path does not affect the other, thereby improving reliability while maintaining reasonable system complexity.
Solution Approach 2:
The system changes the operational parameters of different flow paths based on conditions. The first flow path operates independently for passenger cooling, while the second flow path operates independently for component cooling, allowing flexible parameter adjustment to maintain reliability.
2Device complexity
If waste heat from avionics equipment is discharged directly to the outside, then the cooling function is simple, but energy utilization efficiency decreases
Solution Approach 1:
The waste heat generated by avionics equipment in the component compartment is converted into a useful resource by using it to heat the passenger compartment through the heat utilization circuit. This transforms the harmful waste heat into a beneficial heating source, improving energy utilization efficiency while maintaining simple system structure.
Solution Approach 2:
The heat utilization circuit enables the waste heat from the component compartment to serve multiple functions: it can heat the passenger compartment during cold conditions and can be discharged when heating is not needed, making the system multi-functional and improving overall energy efficiency.
3Device complexity
If a single air conditioning system is used for both passenger and component compartments, then the system structure is simple, but the air conditioning performance for each compartment decreases
Solution Approach 1:
The air conditioning system is segmented into two independent systems: the first air conditioning system for the passenger compartment and the second air conditioning system for the component compartment. Each system can be controlled independently, ensuring optimal air conditioning performance for each compartment while maintaining manageable system structure.
Solution Approach 2:
The system dynamically adjusts the operation of different air conditioning systems based on the specific needs of each compartment. The first air conditioning system operates independently for passenger comfort, while the second system operates independently for component temperature control, allowing flexible and optimal performance adjustment.
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
Ensures continuous cooling of electric components and effective utilization of waste heat for cabin heating, enhancing reliability and energy efficiency.
Implementation Method 1
an evaporator configured to absorb heat from the air flowing through the second circulation path
Implementation Method 2
a condenser configured to release heat to the air flowing through the first circulation path
Implementation Method 3
a heat transfer flow path configured to transfer heat from the evaporator to the condenser by circulating a heating medium between the evaporator and the condenser
Data Source
AI summary
A VTOL aircraft (moving object) includes: a first communication path allowing a cabin (passenger compartment) and a component compartment to communicate with each other; and a second communication path for opening the component compartment to the outside of a fuselage. A portion of air in the cabin flows through a first circulation path and returns to the cabin, and the remaining air in the cabin flows through the first communication path and is introduced into the component compartment. A portion of air in the component compartment flows through a second circulation path and returns to the component compartment, and the remaining air in the component compartment flows through the second communication path and is discharged to the outside of the fuselage.