Modular Heat Exchanger Unit for Multi-Compartment Temperature Control
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Solution Overview
Problem
Existing refrigeration systems in transportation vehicles often require multiple refrigeration circuits to maintain distinct temperatures in different compartments, which complicates the system design and increases energy consumption.
Innovation Solution
A modular heat exchanger unit with absorption heat exchangers and expansion devices is introduced, allowing for a single refrigeration circuit to serve multiple compartments by using a frame-supported modular compartment with multiple cooling air outlets and fans, enabling flexible configuration and efficient temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple refrigeration circuits are used to maintain distinct temperatures in different compartments, then temperature control precision is improved, but device complexity and energy consumption increase
Solution Approach 1:
The single refrigeration circuit is segmented into multiple independent cooling zones through modular heat exchanger units. Each module can be independently controlled to provide distinct temperatures to different compartments, achieving temperature control precision without requiring multiple complete refrigeration circuits. The segmentation is achieved by dividing the evaporator into separate modular units that can be independently regulated.
Solution Approach 2:
A single refrigeration circuit is designed to serve multiple compartments simultaneously through a shared refrigerant distribution system. The universal circuit configuration allows one refrigeration system to perform the function of multiple separate circuits, reducing device complexity while maintaining the capability to provide distinct temperatures to different zones through controlled refrigerant distribution.
2Measurement precision
If multiple refrigeration circuits are used to maintain distinct temperatures in different compartments, then temperature control precision is improved, but energy consumption increases
Solution Approach 1:
Multiple refrigeration circuits are merged into a single integrated refrigeration system that shares common components including compressor, condenser, and refrigerant distribution infrastructure. This merging eliminates redundant energy consumption associated with multiple independent systems while maintaining the ability to provide distinct temperature control to different compartments through shared evaporator modules and controlled refrigerant allocation.
Solution Approach 2:
A single refrigeration circuit performs the multi-functional role of multiple separate circuits by simultaneously serving multiple compartments with different temperature requirements. This universal approach reduces total energy consumption by eliminating duplicate compressors and condensing systems, while achieving precise temperature control through intelligent refrigerant distribution and modular heat exchanger control.
3Device complexity
If a single refrigeration circuit is used to serve multiple compartments, then device complexity is reduced, but temperature control precision may deteriorate
Solution Approach 1:
The evaporator is segmented into multiple modular heat exchanger units that can be independently controlled. Each module acts as an independent temperature control zone within the single refrigeration circuit, allowing precise temperature regulation for different compartments without requiring separate refrigeration systems. The segmentation enables zone-specific temperature control while maintaining system simplicity.
Solution Approach 2:
The refrigeration system incorporates dynamic control mechanisms including variable speed compressors, electronic expansion valves, and adjustable fan speeds that allow real-time optimization of temperature control precision. These dynamic elements enable the single refrigeration circuit to adapt and maintain precise temperature control across multiple compartments with varying thermal requirements.
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 solution allows for efficient temperature regulation across multiple compartments using a single refrigeration circuit, reducing energy consumption and simplifying system design while maintaining precise temperature control.
Implementation Method 1
at least one absorption heat exchanger
Implementation Method 2
at least one expansion device
Implementation Method 3
at least one fan
Data Source
AI summary
A transportation refrigeration assembly includes a modular heat exchanger unit that includes at least one absorption heat exchanger and at least one expansion device. A frame supports the modular heat exchanger unit. A first cooling air outlet is in fluid communication with the modular heat exchanger unit. A second cooling air outlet is in fluid communication with the modular heat exchanger unit.