Heat exchange – Conduit within – or conforming to – panel or wall structure – Opposed plates or shells
Patent
1989-03-30
1990-12-18
Schwadron, Martin P.
Heat exchange
Conduit within, or conforming to, panel or wall structure
Opposed plates or shells
165168, 122 6A, F28F 312
Patent
active
049779559
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a heat-transfer wall composed of two plate-like parts for separating two rooms at different temperatures, having several tubular sections substantially parallel to each other, enclosed between the plate-like parts and being in heat conducting connection with at least one part, which tubular sections carry a streaming medium, the two plate-like parts being firmly connected together along an interface which extends substantially parallel to the two principal directions of the wall.
Such a wall is known wherein the tubular sections have a circular cross section, so that for reasons of assembly the interface between the plate-like parts lies in the region of the plane in which also the longitudinal axes of the tubular sections extend. The tubular sections, therefore, each have half their cross section lying in respective channel-like cutouts of the two plate-like parts. As the cutouts of both wall parts must fit together exactly and must be arranged around the tubular sections so as to match, the precision requirements for making such a wall as well as the costs are quite high.
It is the object of the invention to improve a heat-transfer wall of the initially mentioned kind so that it can be made at considerably lower cost for equally good performance.
According to the invention, this problem is solved in that the interface between the plate-like parts is arranged so that it lies outside the outer contour of the tubular sections and that the plate-like part containing the tubular sections faces the room at the higher temperature. This solution is based on the finding that because of the different temperatures in the rooms separated by the wall the heat conduction through the wall can be associated in large part with one of the two plate-like wall parts. The other wall part then serves primarily as covering and/or reinforcing element. This obviates channel-like cutouts for receiving tubular sections in the plate-like wall part which faces the room at the low temperature. Hence also the necessity is eliminated to fit together exactly cutouts in both wall parts and around the tubular sections. In the new wall, therefore, the cost of adapting is considerably reduced. Also assembly of the new wall is much simpler, damage to the tubular sections during the bringing together of the two wall parts being practically ruled out. Of advantage is also that the tubular sections can be secured in one wall part only and can then be handled together with it as a structural unit.
Avoiding damage to the tubular sections during assembly is especially important when the wall is to be installed under difficult operating conditions. This is the case for example when high pressures and temperatures act on the wall simultaneously, possibly combined further with stress from radiactive radiation.
Some embodiment examples of the invention will be explained more specifically in the following description with reference to the drawings, which in
FIGS. 1 to 10 show each a partial transverse section of a wall according to the invention.
According to FIG. 1, a metallic, flat, heat-transferring wall 100 separates a hot room 300 from a cooler room 200. The wall 100 consists of two plate-like parts 2 and 3 and of straight tubular sections 11 enclosed between them. The tubular sections are parallel and are traversed by a cooling medium, e.g. water, which has on the average about the same temperature as the cooler room 200. The other contour of the tubular sections 11 is rectangular. Each tubular section is embedded in a channel-like cutout 31 of the wall part 3. Approximately three fourths of the outer circumference of each tubular section 11 are in heat-conducting contact with the periphery of the respective cutout 31. The corners of the cutouts are rounded, and the corners of the tubular sections 11 associated with them are adapted accordingly, so that good heat flow takes place between the thicker wall part 3 and the tubular sections. The tubular sections 11 are secured in the cutouts 31 by means of solder material 4. T
REFERENCES:
patent: 2440245 (1948-04-01), Chevigny
Flanigan Allen J.
Schwadron Martin P.
Sulzer Brothers Limited
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