Phase change determination system
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Solution Overview
Problem
Existing cold storage materials face challenges in determining the precise point in time when they completely solidify due to minimal visual changes during phase change.
Innovation Solution
A phase change determination system utilizing a temperature acquisition unit, storage unit, and determination unit to identify phase changes by setting reference temperatures and monitoring temperature fluctuations, including a first reference temperature below the freezing point and a second reference temperature at the completion of solidification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cold storage materials are used to maintain refrigeration, then the storage space can be kept cold through latent heat of fusion, but the point in time when the cold storage material is completely frozen cannot be determined due to small visual changes during phase change
Solution Approach 1:
The patent replaces visual inspection with an automated temperature acquisition system that uses temperature sensors and processing units to detect phase changes. The system acquires temperature values over time and automatically determines when the cold storage material has completely frozen based on temperature trends, eliminating the need for visual observation and providing precise measurement of the freezing completion point
Solution Approach 2:
The system continuously monitors temperature changes and provides feedback to determine phase change completion. By acquiring temperature values at multiple time points and analyzing the temperature trend (whether the temperature is still decreasing or has stabilized), the system can accurately identify when the cold storage material has completely frozen, transforming the undetectable visual change into measurable temperature feedback
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
Enables accurate determination of phase change occurrence in cold storage materials, ensuring efficient preparation and use by identifying the start and completion of solidification processes.
Implementation Method 1
a temperature acquisition unit for acquiring the temperature of the target object
Implementation Method 2
the determination unit determines that the solidification of the target object has started based on the acquisition result of the temperature acquisition unit turning upward in a temperature range below the first reference temperature
Data Source
AI summary
Problem: To provide a phase change determination system capable of determining the occurrence of a phase change.Solution: The phase change determination system 1 includes a temperature sensor 31 for acquiring the temperature of the phase change material 21, a database 43 for storing a reference temperature set in association with the phase change material 21, a determination unit 47 for determining whether or not a phase change has occurred in the phase change material 21 based on the acquisition result of the temperature sensor 31 and the reference temperature, and a determination unit 47 for determining whether or not a phase change has occurred in the phase change material 21 based on the acquisition result of the temperature sensor 31 and the reference temperature. The reference temperature includes a first reference temperature set at a temperature lower than or equal to the freezing point of the phase change material 21, and the determination unit 47 determines that the solidification of the phase change material 21 has begun based on the acquisition result of the temperature sensor 31 turning upward in a temperature range lower than or equal to the first reference temperature.