SI26020A - The heat exchanger of the intermediate state - Google Patents

Abstract

The intermediate heat exchanger is a solution in the field of the use of media that must not come into contact in any way (so-called safety heat exchangers). Also, the intermediate medium (8) (aluminum) allows a more even and flexible heat transfer between the two media. The housing itself consists of tubular walls (1) and (2) and sides (5), (6) and (7), all welded together. The pipe bundle (3) is welded to the pipe wall (1) and the pipe bundle (4) is welded to the pipe wall (2). An intermediate medium (8) (aluminum) is poured into the housing, which envelops the tube bundles (3) and (4).

Description

INTERMEDIATE HEAT TRANSFER

1) The intermediate state heat exchanger represents a complete novelty in the world in the field of construction of tubular heat exchangers. An essential advantage of the intermediate heat exchanger is that the heat transfer between the two media (X and Y) takes place via a third non-liquid or gaseous medium 8 (aluminum), which surrounds the tubes of both media traveling in separate tubes and so we take advantage of the high thermal conductivity of aluminum, and the velocities of the media in the tube bundles 3 and 4 must be the same.

The intermediate heat exchanger has a completely separate bundle of pipes, where each bundle of pipes has its own connection part (cap) and where the distance between the pipes in the pipe bundle is 3-4 mm.

2) The intermediate heat exchanger prevents the possibility of mixing both media, which would result in both material and safety damage. As a safety heat exchanger, it is suitable for use in the following fields of technology:

• Energy (heating, cooling, evaporation, condensation) • Pharmacy (heating, cooling, evaporation, condensation) • Food industry (heating, cooling, evaporation, condensation) • Process industry (heating, cooling, evaporation, condensation) • Chemical industry heating, cooling, evaporation, condensation)

3) Due to the unique construction of the intermediate state heat exchanger, in no case can two different media be mixed, be they in gaseous or liquid state, which other constructions in the field of heat exchanger manufacturing do not guarantee 100%. Given that the primary and secondary sides of the gearbox are both made in the form of tube bundles and that the distribution of heat or cold via aluminum is extremely uniform, we can adjust the thermodynamic properties of both media. The intermediate heat exchanger operates in the temperature range from -200 ° C (cryogenic range) to + 400 ° C.

By exploiting the properties of the intermediate medium (aluminum) we avoid the effect of very high (steam, thermal oil) or very low temperatures (liquid gases), where there is too rapid transfer of heat from the outer walls of the pipe bundle to liquid or. gaseous medium. The above-mentioned high or. low temperatures on the outer walls of the pipe bundle cannot be regulated with such high-quality heat exchangers. The construction of so-called safety heat exchangers (eg Sicherheitswarmetauscher DE3717010A1, Karl-Heinz Funke) is much more demanding and expensive and does not offer as high a level of safety as an intermediate heat exchanger.

4) In the state of the art known so far, there is no similar technical or constructional solution of tubular gears. The heat exchanger of the intermediate state forms an assembly of two pipe walls 1 and 2, in which the bundles of pipes 3 and 4 are welded (all together we call this register). The bundle of pipes is represented by U-shaped pipes. The register itself is surrounded by sides 5, 6 and 7, which together with pipe walls 1 and 2 are welded together to form a housing in the form of an open box (Figures 1 and 2).

Liquid aluminum 8 is poured into the housing, which fills and fills all gaps between the pipes and the sides. Aluminum is poured to the upper edge of the housing and when it hardens it forms a compact unit (Figures 3 and 4). Medium X enters the tube bundle 3 below (or above) and exits above (or below), as well as medium Y enters tube bundle 4 above (or below) and exits below (or above). Heat transfer between media X and Y is via intermediate medium 8 (aluminum).

Claims (2)

PATENT APPLICATIONS Intermediate heat exchanger, characterized in that the heat transfer between the two media (X and Y) takes place via a third non-liquid or gaseous medium 8 (aluminum) which surrounds the tubes of the two media traveling separately tube bundles and thus take advantage of the high thermal conductivity of aluminum, also the velocities of the media in the tube bundles 3 and 4 must be the same. 2. Intermediate heat exchanger, characterized in that it has a completely separate bundle of pipes, where each bundle of pipes has its own connecting part (cap) and where the distance between the pipes in the pipe bundle is 3-4 mm.