Aircraft Galley Refrigeration Layout for Individual Cart Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Aircraft galley refrigeration systems require significant space due to large airflow supply and return components, leading to reduced passenger cabin space and inefficient cooling with a single heat exchanger that cools all galley carts to the same temperature.
Innovation Solution
A galley refrigeration system incorporating a liquid heat exchange loop and an air heat exchange loop, with the air heat exchange loop configured to provide individual temperature control to each galley cart, reducing the overall footprint by using thinner ducts and smaller fans, and allowing for independent temperature settings for each cart.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single heat exchanger is used to cool all galley carts, then the refrigeration system has high cooling capacity, but the fan becomes large and loud and uses excessive power
Solution Approach 1:
The patent divides the single heat exchanger into multiple smaller heat exchangers, with each serving a specific galley cart. This segmentation allows each fan to be smaller and more efficient, reducing overall power consumption while maintaining adequate cooling capacity for each zone.
Solution Approach 2:
The patent implements local temperature control by providing individual heat exchangers and fans for each galley cart, allowing each zone to be cooled independently according to its specific requirements rather than using a uniform high-capacity system throughout.
2Temperature
If a single heat exchanger is used to cool all galley carts, then the refrigeration system provides uniform cooling, but individual temperature control for each cart is lost
Solution Approach 1:
The patent segments the refrigeration system into independent zones, with each galley cart having its own heat exchanger and fan. This allows each cart to be controlled independently while maintaining uniform cooling within each individual cart zone.
Solution Approach 2:
The patent applies local quality by allowing different temperature settings for different galley carts based on their specific needs, while each individual cart maintains uniform temperature distribution through its dedicated heat exchanger.
3Power
If large airflow supply and return components are used, then adequate cooling is provided, but the galley footprint increases by 4-5 inches
Solution Approach 1:
The patent segments the airflow system into multiple small ducts serving individual carts rather than using large centralized ducts. This segmentation dramatically reduces the space required for airflow components while maintaining adequate cooling performance for each cart.
Solution Approach 2:
The patent relocates the heat exchangers to the top of each galley cart and routes ducts vertically along the rear wall, utilizing the vertical dimension to accommodate airflow components without increasing the horizontal footprint of the galley.
4Power
If the galley footprint is increased to accommodate airflow components, then cooling system requirements are met, but valuable cabin space is lost
Solution Approach 1:
The patent segments the cooling system into distributed small units rather than large centralized equipment, reducing the overall space requirements and allowing the galley to fit within the existing cabin volume without encroaching on passenger space.
Solution Approach 2:
The patent utilizes the vertical space above and around the galley carts to locate heat exchangers and route ducts, freeing up horizontal cabin space that would otherwise be required for airflow components.
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
This configuration reduces the galley's depth, freeing up space for passenger seating by minimizing the airflow components' size and enabling efficient, individually controlled refrigeration for galley carts, thus optimizing space utilization and cooling efficiency.
Implementation Method 1
a liquid heat exchange loop and an air heat exchange loop in thermal communication with the liquid heat exchange loop
Data Source
AI summary
A galley refrigeration system includes a liquid heat exchange loop and an air heat exchange loop in thermal communication with the liquid heat exchange loop. The air heat exchange loop includes a heat exchanger configured to be coupled in flow communication with at least one galley cart. Optionally, the galley refrigeration system may include a control system in operative communication with the liquid heat exchange loop and the air heat exchange loop.