JPH07117319B2 - Vertical high-temperature regenerator for gas absorption chiller / heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vertical high temperature regenerator for a gas absorption chiller / heater.

As a conventional high-temperature regenerator for a gas absorption chiller-heater, as shown in Fig. 1, a furnace tube smoke tube type apparatus having a furnace tube section and a smoke tube section separately has been usually used. Such an apparatus is an apparatus for causing heat exchange by flowing combustion gas from a blast burner to a smoke pipe section in a lithium bromide dilute solution reservoir to boil the lithium bromide solution to generate a concentrated solution and a refrigerant vapor. Since such a conventional device is horizontally long, the installation space is large,
In addition to occupying a large volume, it also has a large amount of solution and has a slow load response. Further, since it is a horizontally long type, it is necessary to use a blast burner with a long flame length, and such a burner has a high noise value, requires periodic inspection, and has a drawback of high cost. Furthermore,
Since the furnace tube part and the smoke tube part, that is, the combustion chamber and the heat exchange part are separately configured, it is difficult to improve the compactness on the premise of the conventional device. While repeating trial and error, the inventors of the present invention have found that there is a problem in improving the conventional device, and arrived at the present invention by shipping from a completely different angle.

(Structure of the Invention) In FIGS. 2 and 3, reference numeral 1 is a heat exchange chamber constituted by a heated liquid wall 2. A parallel flow heat exchange section 3 is formed on one side in the heat exchange chamber 1, and the other side of the heat exchange chamber 1 is provided with a liquid pipe group 4a in the inner row, a liquid pipe group 4b in the middle row, and a liquid pipe group in the outer row. 4c, and an inner shield plate 5a is provided between the liquid pipes 4 forming the liquid pipe group 4a in the inner row, and an outer shield plate 5b is formed between the liquid pipes 4 forming the liquid pipe group 4c in the outer row. Provided with an inner shield plate
An upper communication part 6 is provided on the upper part of 5a, a lower communication part 7 is provided on the lower part of the outer shield plate 5b, and a fin 8 is provided on the liquid pipe 4 constituting the liquid pipe group 4b of the intermediate row. The liquid pipe 4 is in communication with the heated liquid wall 2, and an exhaust part 9 is provided adjacent to the liquid pipe group 4c in the outer row.

According to the second aspect, in the liquid pipe group according to the first aspect, the liquid pipes 4 in each row are arranged in a puddle shape with respect to the liquid pipes 4 in the other rows.

(Operation) In the above configuration, the combustion gas generated in the burner 10 rises in the co-current heat exchange section 3. At this time, the liquid tube group in the inner row
Since the liquid in 4a and the liquid in the wall 2 to be heated are moving upward, the heat exchange with the combustion gas is a parallel flow type. In the upper part of the parallel flow type heat exchange section 3, the combustion gas traverses the upper communication section 6, all of which flows to the opposite side, and this time it descends, but rises the liquid pipe 4 during this crossing. Exchange heat with liquid. This heat exchange is of the orthogonal type because it is a heat exchange that raises the combustion gas flowing in the lateral direction and the liquid pipe 4. Next, the combustion gas descends between the liquid pipe group 4a in the inner row and the liquid pipe group 4c in the outer row, but between the liquid pipe group 4a and the liquid pipe group 4c, the liquid pipe group 4c in the middle row. Is installed, and fins 8 are provided in each liquid pipe 4 of this liquid pipe group 4b, so that a countercurrent heat exchange effect between the liquid rising in the liquid pipe 4 and the combustion gas descending is obtained. In addition, good heat exchange can be performed. The combustion gas further enters from the lower communication portion 7 to the outside of the liquid pipe group 4c in the outer row, and the liquid pipe group in the outer row
It is discharged from the exhaust unit 9 adjacent to 4c. In the above heat exchange, since the liquid pipes 4 in each row are configured in a puddle shape with respect to the liquid pipes 4 in the other rows, the heat exchange described above is further promoted. In this way, the heat exchange between the liquid moving upward in the liquid pipe 4 and the combustion gas is changed to the parallel flow type, the cross flow type, or the counter flow type as the combustion gas temperature becomes lower, and the number of passes is increased, so that the thermal efficiency is increased. Is significantly improved, which, combined with the configuration of the combustion chamber equal heat exchange chamber 1, can achieve a dramatic reduction in size. That is, compared with the conventional device, the occupied volume is about 50% to 60%, and the installation area is 60% to 70%.
It can be configured with a size of about 50%. In addition, since all of the combustion gas flows from one side of the heat exchange chamber 1 to the other side, the exhaust unit 9 can be provided adjacent to the liquid pipe group 4c in the outer row. It is possible to make a great contribution to downsizing and simplification of the device.

(Effects of the Invention) As described above, the present invention has the structure of the combustion chamber equal heat exchange chamber and the unique structure of the flow of the combustion gas to improve the thermal efficiency, thereby achieving a drastic downsizing of the regenerator. It has advantages.

[Brief description of drawings]

1 (A) and 1 (B) are explanatory views of a conventional device, FIG. 2 is an explanatory plan view of the present invention, and FIG. 3 is an explanatory vertical sectional view taken along the line AA. Reference numeral 1 ... Heat exchange chamber, 2 ... Liquid wall to be heated, 3 ... Parallel heat exchange section, 4 ... Liquid pipe, 4a ... Liquid pipe group in inner row, 4b ... Liquid pipe group in intermediate row , 4c …… outer row liquid tube group, 5a …… inner shield plate, 5b …… outer row shield plate, 6 …… upper communication part, 7
...... Lower communication part, 8 ...... Fin, 9 ...... Exhaust part, 10 ......
Burner, 11 ... Flame, 12 ... Liquid inlet

Claims (2)

[Claims] 1. A parallel-flow heat exchange section is formed on one side of a heat exchange chamber constituted by a liquid wall to be heated, and the other side of the heat exchange chamber is provided with a liquid pipe group of an inner row, a liquid pipe group of an intermediate row, and An inner side provided with a shield plate between the liquid tubes forming the inner row liquid tube group and between the liquid tubes forming the outer row liquid tube group An upper communication part is provided on the upper part of the shield plate, a lower communication part is provided on the lower part of the outer shield plate provided on the outer row, and fins are provided on the liquid pipes of the intermediate row, and each liquid pipe is heated by A vertical high-temperature regenerator for a gas absorption chiller-heater configured to communicate with a liquid wall and provided with an exhaust portion adjacent to the outer row. 2. A vertical high-temperature regenerator for an absorption chiller-heater according to claim 1, wherein the liquid pipes in each row are arranged in a puddle shape with respect to the liquid pipes in the other rows.