Thermal Test Vehicle Layout for Accurate High-Temperature Sensing
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Solution Overview
Problem
Existing thermal test vehicles face challenges with increased temperature differences leading to measurement errors, insulation film deterioration, and reduced lifespan due to high operating temperatures, resulting in faulty data and increased maintenance costs.
Innovation Solution
Incorporation of multiple insulation layers, including insulator plates with higher thermal conductivity and resistance, to manage heat flux distribution between a heat resistor and cold plates, reducing temperature differences and enhancing sensor accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If higher operating temperatures are used to test cooling systems, then the testing can reflect real high-temperature conditions, but measurement accuracy decreases due to increased temperature difference between heat resistor and sensor
Solution Approach 1:
A thermal interface material (TIM) layer is introduced between the heat resistor and the temperature sensor to serve as a thermal intermediary. This TIM layer has high thermal conductivity that is optimized to transmit heat uniformly from the heat resistor to the sensor, reducing the temperature gradient and improving measurement accuracy even at high operating temperatures.
Solution Approach 2:
The thermal conductivity parameter of the interface material is specifically optimized and adjusted to match the thermal characteristics of the heat resistor. By changing the thermal conductivity parameter of the TIM layer, the system achieves better thermal coupling and reduces measurement errors at high temperatures.
2Temperature
If higher operating temperatures are used, then cooling system performance can be evaluated under real conditions, but heat resistor insulation film deteriorates faster leading to short-circuiting and damage
Solution Approach 1:
The thermal interface material acts as a protective intermediary layer between the heat resistor and the environment. This TIM layer provides thermal management that prevents excessive heat accumulation at the heat resistor interface, thereby protecting the insulation film from thermal deterioration and extending component lifespan.
Solution Approach 2:
The optimized TIM layer provides beforehand protection by pre-managing heat distribution before it can cause damage to the insulation film. The thermal interface material cushions the heat flux, preventing hot spots that would otherwise accelerate insulation degradation and lead to short-circuiting.
3Ease of manufacture
If standard heat resistor materials are used at high temperatures, then manufacturing is simpler, but maintenance costs increase due to faster deterioration and shorter lifespan
Solution Approach 1:
The thermal conductivity parameter of the interface material is optimized to extend the lifespan of the heat resistor under high-temperature conditions. This parameter optimization reduces the frequency of failures and maintenance needs, lowering long-term maintenance costs while keeping the manufacturing process relatively simple.
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
Improves measurement accuracy, extends the lifespan of the thermal test vehicle, and reduces maintenance costs by mitigating film deterioration and short-circuiting, ensuring reliable thermal testing at high operating temperatures.
Implementation Method 1
A transfer of at least an other portion of heat flux from the heat resistor to the second cold plate via the second insulator plate
Implementation Method 2
The plurality of insulation layers includes a second insulator plate. The second insulator plate is positioned between the heat resistor and the second cold plate. The second insulator plate transfers the at least an other portion of the heat flux from the heat resistor to the second cold plate.
Data Source
AI summary
A thermal test vehicle including a base plate, first cold plate, heat resistor, second cold plate, plurality of insulation layers, and one or more sensors is provided. The first cold plate is positioned within the base plate and the heat resistor is positioned over the first cold plate and the second cold plate is positioned over the heat resistor. The plurality of insulation layers includes a second insulator plate. The second insulator plate is positioned between the heat resistor and the second cold plate. The second insulator plate transfers at least an other portion of heat flux from the heat resistor to the second cold plate. At least a portion of heat flux from the heat resistor is transferred from a heat source to the first cold plate. The one or more sensors is positioned within at least one of the second cold plate and first cold plate.