Vehicle Radiator Layout for Higher Cooling Temperature Difference
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Solution Overview
Problem
The existing vehicle heat exchange systems suffer from reduced cooling efficiency due to the positioning of high-temperature and low-temperature side radiators, where the inlet and outlet ports face each other, resulting in a diminished temperature difference between the cooling liquids passing through them.
Innovation Solution
A vehicle heat exchange system is designed with multiple cooling fans generating air flow, featuring a high-temperature side radiator unit and a low-temperature side radiator unit, where the radiators are arranged to maximize the temperature difference by using first and second radiators connected through pipes, allowing for counterclockwise and clockwise circulation of the cooling liquid, respectively, and the radiators are positioned to face each other upstream in the air flow direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the high-temperature side radiator and the low-temperature side radiator are disposed with inlet ports and outlet ports facing each other, then the device complexity is reduced, but the cooling efficiency deteriorates due to reduced temperature difference
Solution Approach 1:
The high-temperature side radiator is segmented into a first high-temperature side radiator and a second high-temperature side radiator, which are disposed at different positions facing different cooling fans. Similarly, the low-temperature side radiator is segmented into a first low-temperature side radiator and a second low-temperature side radiator. This segmentation allows the inlet and outlet ports to be positioned such that cooling liquids flow in opposite directions relative to each other, maintaining a large temperature difference while simplifying the overall device arrangement.
Solution Approach 2:
The invention inverts the conventional arrangement by positioning the first high-temperature side radiator to face a first cooling fan and the second high-temperature side radiator to face a second cooling fan, with corresponding low-temperature side radiators arranged to face the opposite fans. This inversion ensures that the inlet port of one radiator faces the outlet port of the other radiator, creating counter-flow patterns that maximize temperature difference while maintaining simple device structure.
2Productivity
If multiple cooling fans are used to generate cooling air flow, then the cooling performance is improved, but the energy consumption increases
Solution Approach 1:
The invention assigns different functions to different cooling fans by positioning the first cooling fan to primarily cool the first high-temperature side radiator and first low-temperature side radiator, while the second cooling fan cools the second high-temperature side radiator and second low-temperature side radiator. This local quality differentiation allows each fan to operate more efficiently at its designated zone, improving overall cooling performance while reducing total energy consumption compared to using all fans at full capacity.
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 enhances the cooling efficiency by increasing the temperature difference across the radiators, reducing energy consumption and improving cooling performance, thereby optimizing fuel efficiency and cooling performance.
Implementation Method 1
a high-temperature side radiator unit configured to transfer heat between a cooling liquid discharged from a high-temperature heat source and cooling air, and supply the cooling liquid to the high-temperature heat source again
Data Source
AI summary
Provided is a technique for improving the cooling efficiency of a vehicle heat exchange system configured to cool a cooling liquid discharged from each of a plurality of heat sources. The vehicle heat exchange system comprises a high-temperature side radiator unit and a low-temperature side radiator unit, the high-temperature side radiator including: a first high-temperature side radiator that faces a first fan and is connected to a high-temperature side discharge pipe; a second high-temperature side radiator that faces a second fan and is connected to a high-temperature side supply pipe; and a high-temperature side connection pipe for supplying the cooling liquid from the first high-temperature side radiator to the second high-temperature side radiator, and the low-temperature side radiator unit including: a first low-temperature side radiator that is arranged to face the second high-temperature side radiator on the upstream side of the cooling air flow, and is connected to a low-temperature side discharge pipe; a second low-temperature side radiator that is arranged to face the first high-temperature side radiator on the upstream side of the cooling air flow, and is connected to a low-temperature side supply pipe; and a low-temperature side connection pipe for supplying the cooling liquid from the first low-temperature side radiator to the second low-temperature side radiator.