Means, method and system for heat exchange

A heat transfer device for exchange of thermal energy between zones of elevated and reduced temperature, comprising:—

• (a) a heat transportable medium;
• (b) a device body to contain the heat transportable medium;
• and
• (c) a heat transfer member;
• wherein:—(i) said body is configured to allow the heat transportable medium to move between said zones of elevated and reduced temperature;
• (ii) said heat transfer member defines a heat exchange surface with which the heat transportable medium contacts in use and via which heat is transferable between the heat transportable medium at one side of said heat transfer member and a working medium at opposite side of said heat transfer member;
• (iii) said heat transportable medium includes a base fluid and a solid nanofiller;
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• surface
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• area
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• solid
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• nanofiller
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• AA
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• area
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• heat
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• exchange
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• surface
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• Aex
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• is above 100.

A method of manufacturing a heat transfer device, comprising:—

• (a) providing a device body having at least a first wall, a second wall, a third wall and a fourth wall arranged in a layered manner such that a first cavity is defined between said first wall and said second wall, a second cavity is defined between said second wall and a third cavity is defined between said third wall and said fourth wall, and the second cavity is sandwiched or otherwise positioned between said first cavity or said third cavity;
• (b) providing said walls with channels such that the first cavity, the second cavity and the third cavity are in fluid communicable relationship;
• and
• (c) providing said device body with a first passageway allowing fluid to enter or exit the second cavity and a second passageway, and a second passageway allowing fluid to enter or exit the third cavity, such that fluid can pass enter said device body firstly into the second cavity, secondly into the first cavity and thirdly into the third cavity and then exiting said device body, or firstly into the third cavity, secondly into the first cavity and thirdly into the second cavity and then exiting said device body.