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Thermal storage material composition, auxiliary heat source and heat supply method using the thermal storage material composition

一种蓄热材料、组合物的技术，应用在热交换的材料、化学仪器和方法、蓄热设备等方向，能够解决结晶速度慢等问题，达到热能储存稳定性高的效果

Inactive Publication Date: 2021-02-19
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, a method of adding sodium thiosulfate pentahydrate has also been proposed as a means of maintaining a supercooled state at low temperatures (see Patent Document 4), but there is a problem that the crystallization rate is slow

Method used

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  • Thermal storage material composition, auxiliary heat source and heat supply method using the thermal storage material composition
  • Thermal storage material composition, auxiliary heat source and heat supply method using the thermal storage material composition
  • Thermal storage material composition, auxiliary heat source and heat supply method using the thermal storage material composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Each heat storage material sample whose total heat storage material was 4g was produced using the heat storage material composition of following Table 1.

[0070] The following items of these respective samples were measured.

[0071] (Determination of spontaneous crystallization initiation temperature)

[0072] 4 g of each sample (heat storage material) was sealed in an airtight container, and after melting at 80° C., it was cooled to room temperature to be in a supercooled state. Thereafter, a thermocouple was attached, and after that, it was set in a constant temperature bath, and the temperature of the atmosphere was lowered at a rate of about 0.7°C / minute, and cooled to -40°C. The temperature change of the thermal storage material was observed with a thermocouple, and the temperature at which a sudden temperature rise due to crystallization occurred was taken as the spontaneous crystallization initiation temperature.

[0073] (Measurement of crystallization speed...

Embodiment 2

[0085] The addition amount dependence of ethanol was evaluated.

[0086] The obtained results are shown in Table 2.

[0087] 【Table 2】

[0088]

[0089] In addition, the sample 105 is the same sample as the sample 4 of Table 1.

[0090] Here, the crystallization speeds of samples 102, 104, and 105 were 2.9 mm / s, 1.6 mm / s, and 1.4 mm / s in this order.

[0091] The spontaneous crystallization initiation temperature of samples 102 to 107 was -25°C or lower.

[0092] In samples 101 to 106, the crystallization rate was 0.6 mm / sec or more, and the heat dissipation was 130 kJ / kg or more.

[0093] The crystallization rate of sample 107 was less than 0.6 mm / sec, and the heat release was less than 130 kJ / kg.

Embodiment 3

[0095] The addition amount dependence in the case of ethylene glycol was evaluated in the same manner as in Example 2.

[0096] The obtained results are shown in Table 3.

[0097] 【table 3】

[0098]

[0099] The spontaneous crystallization initiation temperatures of samples 202 to 208 were all below -25°C. The spontaneous crystallization onset temperature of sample 201 was higher than -25°C.

[0100]In samples 201 to 207, the crystallization rate was 0.6 mm / sec or more. The crystallization rate of sample 208 was less than 0.6 mm / sec.

[0101] The heat dissipation of samples 201 to 208 was 130 kJ / kg or more.

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Abstract

A heat storage material composition, at least containing at least one organic compound selected from ethanol, ethylene glycol, propylene glycol, and acetic acid, sodium acetate, and water, wherein a content of the water is 72.4 to 100 parts by mass, relative to 100 parts by mass of the sodium acetate; an auxiliary heat source arid a heat supply method, using the heat storage material composition.

Description

technical field [0001] The present invention relates to a thermal storage material composition, particularly a supercooled thermal storage material composition, an auxiliary heat source and a heat supply method using the thermal storage material composition. More specifically, it relates to a supercooled thermal storage material composition mainly composed of sodium acetate, an auxiliary heat source and a heat supply method using the thermal storage material composition. Background technique [0002] Heat storage materials, especially supercooled latent heat storage materials, utilize heat that absorbs and releases a large amount of latent heat at a certain temperature during melting and solidification. When the main raw material is sodium acetate trihydrate, it is used for heating and warming in the middle temperature range, and when the main raw material is sodium sulfate decahydrate, it is used for air conditioning and cooling in the low temperature range. [0003] Howev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06F28F23/02
CPCC09K5/063F28D20/02Y02E60/14
Inventor 志村隆广池田匡视中村敏明都筑秀和南达哉
Owner FURUKAWA ELECTRIC CO LTD
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