Dew Condensation Testing Device Water Temperature Control
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Solution Overview
Problem
In dew condensation testing, water in the reservoir concentrates over repeated cycles, leading to impurity accumulation and temperature issues when replacing water, causing inconsistent test conditions.
Innovation Solution
A dew condensation testing device with a heat exchanger in the test chamber to regulate water temperature, using a water supply system that passes water through the heat exchanger before supplying it to the reservoir, ensuring stable and controlled water temperature and minimizing impurity concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water is repeatedly heated and evaporated in the water reservoir during dew condensation tests, then dew condensation can be generated on the test piece, but impurities in the water concentrate and accumulate over time
Solution Approach 1:
The patent implements a water replacement mechanism where water in the reservoir is drained and fresh water is supplied after each dew condensation test cycle. This discards the concentrated impurities from previous cycles while recovering the testing capability, ensuring consistent test conditions across multiple cycles.
Solution Approach 2:
The patent extracts the water from the reservoir after each test cycle through a drainage system, separating the water (and its concentrated impurities) from the testing system. This extraction prevents impurity accumulation and maintains test reliability.
2Ease of operation
If water is supplied from an external tank to the reservoir, then water can be replaced after each cycle, but the water temperature may not be within the predetermined range
Solution Approach 1:
The patent introduces a heat exchanger as an intermediary component between the external water tank and the reservoir. This heat exchanger mediates the temperature transfer, adjusting the water temperature to fall within the predetermined range before it enters the reservoir, thus solving the temperature control issue.
Solution Approach 2:
The patent changes the temperature parameter of the supplied water by passing it through the heat exchanger. The heat exchanger adjusts the water temperature to match the required conditions for reliable dew condensation testing, ensuring consistency across test cycles.
3Device complexity
If the water reservoir is not replaced between cycles, then the testing process is simpler, but impurities from test pieces accumulate in the water
Solution Approach 1:
The patent implements a water replacement mechanism where water in the reservoir is drained and fresh water is supplied after each dew condensation test cycle. This discards the concentrated impurities from previous cycles while recovering the testing capability, ensuring consistent test conditions across multiple cycles.
Solution Approach 2:
The patent extracts the water from the reservoir after each test cycle through a drainage system, separating the water (and its concentrated impurities) from the testing system. This extraction prevents impurity accumulation and maintains test reliability.
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
The solution maintains a stable water temperature within a predetermined range, reducing impurity concentration and ensuring reliable dew condensation tests by continuously refreshing the water, thus improving the consistency and accuracy of the testing process.
Implementation Method 1
a heat exchanger, the heat exchanger being in the test chamber, and water which has passed through the heat exchanger is to be supplied to the water reservoir
Implementation Method 2
A heater is built in the water reservoir. Water in the water reservoir is heated by the heater and is vaporized to increase a humidity in the test chamber
Implementation Method 3
when water vapor comes into contact with the low-temperature test piece, the water vapor condenses and dew condensation is caused to generate water droplets
Data Source
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AI summary
A dew condensation testing device, including: a test chamber configured such that a test piece is disposed therein; an air conditioning means configured to adjust an environment in the test chamber; a water reservoir which is disposed in the test chamber and is configured to be supplied with water from outside the test chamber; and a heating means. The dew condensation testing device is configured to heat water in the water reservoir by using the heating means to increase a humidity in the test chamber so as to generate dew condensation on the test piece. The dew condensation testing device includes a heat exchanger, the heat exchanger being in the test chamber, and water which has passed through the heat exchanger is to be supplied to the water reservoir.