Heat Storage Material Composition for Stable 22.5°C Control
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Solution Overview
Problem
Conventional heat storage materials are inadequate for stably maintaining temperatures around 22.5°C, particularly for temperature control target articles like blood platelet preparations, and fail to maintain comfortable living space temperatures due to variations in melting and solidification behaviors.
Innovation Solution
A heat storage material composition comprising a higher hydrocarbon with specific hydrocarbons and lauryl alcohol, where the hydrocarbon includes multiple types of hydrocarbons with 20-35 carbon atoms, a weight ratio of 50% or more, and a melting peak temperature between 35°C and 70°C, with a minimal difference between melting and solidification temperatures and a low degree of solidification point depression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat storage materials are used, then temperature control is achieved, but stable temperature maintenance around 22.5°C is insufficient
Solution Approach 1:
The patent changes the chemical composition parameters of the heat storage material by using a specific mixture of higher alcohols (10-20 carbon atoms) and higher alkanes (20-35 carbon atoms) in controlled weight ratios. This composition adjustment enables the material to maintain a stable melting point around 22.5°C with minimal supercooling, directly resolving the temperature stability issue while improving reliability for blood platelet storage.
Solution Approach 2:
The patent creates a composite heat storage material by combining higher alcohols and higher alkanes in specific proportions (alcohol: 70-95 wt%, alkane: 5-30 wt%). This composite approach leverages the complementary properties of both components to achieve reliable and stable temperature maintenance at 22.5°C, overcoming the limitations of single-component materials.
2Temperature
If higher alcohol content is increased to maintain temperature, then melting temperature control improves, but supercooling increases
Solution Approach 1:
The patent optimizes the alcohol-to-alkane ratio parameter to maintain melting temperature control while minimizing supercooling. By limiting higher alcohol content to 70-95 wt% and adding 5-30 wt% higher alkane, the composition achieves reliable solidification behavior with reduced supercooling compared to conventional high-alcohol formulations.
3Temperature
If conventional heat storage materials are used, then temperature control is achieved, but comfortable living space temperature maintenance is insufficient
Solution Approach 1:
The patent develops a heat storage material with universal applicability by optimizing its composition to maintain comfortable temperatures (20-25°C) for both medical applications (blood platelet storage at 22.5°C) and living space temperature control. The material's stable melting point and minimal supercooling make it adaptable to multiple uses, significantly enhancing versatility.
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 composition effectively maintains temperatures within the range of 21.5°C to 23.5°C with minimal variations, ensuring stable storage and transport of temperature-sensitive articles and comfortable living space temperatures.
Implementation Method 1
utilizing the latent heat of the heat storage material to keep the temperature control target article cool or warm
Implementation Method 2
the alcohol changes phases
Implementation Method 3
placing, into a thermally insulative container, a heat storage material
Data Source
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AI summary
An object of an embodiment of the present invention lies in providing (i) a novel heat storage material composition which (a) makes it possible to stably maintain a temperature of a temperature control target article at around 22.5°C, and/or (b) makes it possible to maintain a comfortable temperature in a living space, and (ii) techniques for using the novel heat storage material composition. This object is attained by a heat storage material composition including a particular higher hydrocarbon and lauryl alcohol.