| 摘要 |
A heat exchanger matrix comprises tubes of drop-shaped cross-section arranged in parallel rows. The tubes of each row face in the same direction, and alternate rows of tubes face in opposite directions. The tube rows have a regular spacing 91, 92. In the preferred embodiment the tubes 1 comprises a circular inner tube 4 through which, in use, a heat exchange fluid flows, and an outer profile tube 6 around which a further heat exchange fluid flows. The space between the inner and outer tubes may be filled with a metal, which may be molten at the operational temperature, or with a ceramic material (possibly fibre reinforced). The tubes are arranged in a matrix (Fig's 2a and 2b), to extend between headers (10, 10b, Fig' 3) or (10a, 10b, 12, Fig' 4). Processes for producing a matrix of the tubes are also disclosed (claims 18 and 23). <IMAGE>
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