JPH0339874A - Longitudinal high temperature regenerator device for gas absorption cold/hot water machine - Google Patents

Abstract

PURPOSE:To improve heat efficiency and make a title device compact by providing a shielding plate between fluid tubes, and providing an upper communication path on the upper part of an inner shielding plate, a lower part communication part on the lower part of an outer shielding plate, and a fin on an intermediate line fluid tube, and further constructing each fluid tube such that it communicates with a fluid wall to be heated. CONSTITUTION:A parallel flow heat exchange part 3 is formed on the one side of a heat exchange chamber 1, and the side of the heat exchange chamber 1 is constructed with an inner line fluid tube groups 4a, an intermediate line fluid tube group 4b, and an outer line fluid tube group 4c. An inner shielding plate 5a is provided between the fluid tubes 4 constituting the fluid tube group 4a, an outer shielding plate 5b is provided between the fluid tubes 4 constituting the fluid tube group 4c. Further, an upper communication part 6 is provided on the upper of the inner shielding plate 5a, and a lower communication part 7 is provided on the lower of the outer shielding plate 5b. Further, a fin 8 is provided on the fluid tube constituting the fluid tube group 4b, and each fluid tube 4 communicates with the fluid wall 2 to be heated. Moreover, an exhaust part 9 is provided next to the fluid tube group 4c. Heat exchange between the fluid and the combustion gas is altered to a parallel flow type, a cross type, and a counter flow type as the combustion gas temperature is lowered to increase a path count, whereby heating efficiency is sharply improved and hence the device is made compact.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vertical high-temperature regenerator for a gas absorption chiller/heater.

As shown in FIG. 1, a conventional high-temperature regeneration device for a gas absorption chiller/heater is usually a buried type device having a furnace tube section and a smoke tube section separately. This device exchanges heat by flowing combustion gas from a plasto burner through a smoke tube in a dilute lithium bromide solution reservoir, boils the lithium bromide liquid, and generates a concentrated solution and refrigerant vapor. Conventional equipment is horizontally long, so it requires a large installation space and occupies a large volume.In addition, it holds a large amount of solution and has slow load response. However, such burners have high noise levels,
It requires periodic inspection and has the drawback of high cost. Furthermore, since the furnace tube section and the smoke tube section, that is, the combustion chamber and the heat exchange section, are constructed separately, it was difficult to improve the compactness based on the conventional device. Through repeated efforts, he learned that there were difficulties in improving the conventional device, and arrived at the present invention by approaching it from a completely different angle.

This is a heat exchange room consisting of wall 2. A cocurrent heat exchange section 3 is formed on one side of the first heat exchange chamber, and the other side of the heat exchange chamber 1 is formed with an inner row of liquid tubes 4a, an intermediate row of liquid tubes 4b, and an outer row of liquid tubes. 4C, an inner shielding plate 5a is provided between the liquid tubes 4 constituting the liquid tube group 4a in the inner row, and an outer shielding plate 5a is provided between the liquid tubes 4 constituting the liquid tube group 4C in the outer row. 5
b, an upper communication part 6 is provided at the upper part of the inner shielding plate 5a, a lower communication part 7 is provided at the lower part of the outer shielding plate 5b, and the liquid pipes 4 constituting the liquid pipe group 4b in the middle row are provided with an upper communication part 6. Fins 8 are provided, each of the liquid tubes 4 is in communication with the heated liquid wall 2, and an exhaust section 9 is provided adjacent to the liquid tube group 4C in the outer row.

In the liquid tube group described in Item 1, the liquid tubes 4 in each row are arranged in a staggered manner with respect to the liquid tubes 4 in other rows.

(Function) In the above configuration, the combustion gas generated in the burner 10 ascends through the parallel flow heat exchange section 3. At this time, the liquid in the inner row of liquid tubes 4a and the liquid in the heated wall 2 are moving upward, so heat exchange with the combustion gas is of a cocurrent type. The combustion gas crosses the upper communication part 6 at the upper part of the parallel flow type heat exchange part 3, and all of it flows to the opposite side and then descends.
During this crossing, heat is exchanged with the liquid rising through the liquid pipe 4. This heat exchange is an orthogonal type because it is a heat exchange between the combustion gas flowing laterally and the liquid pipe 4 moving upward. Next, the combustion gas descends between the liquid tube group 4a in the inner row and the liquid tube group 4C in the outer row.
b is installed, and each liquid pipe 4 of this liquid pipe group 4b is provided with a fin 8, so that a countercurrent heat exchange effect between the liquid rising inside the liquid pipe 4 and the combustion gas descending. In addition, good heat exchange can be performed. The combustion gas further enters the outside of the liquid tube group 4C in the outer row from the lower communication part 7,
When exchanging heat from nine or more exhaust units 9 disposed adjacent to the liquid pipe group 4C in the outer row, the liquid pipes 4 in each row are configured in a zigzag shape relative to the liquid pipes 4 in other rows. According to
The heat exchange described above is further promoted. In this way, liquid pipe 4
As the temperature of the combustion gas decreases, the heat exchange between the upwardly moving liquid and the combustion gas changes from parallel flow type, orthogonal flow type, to countercurrent type, and as the number of buses increases, thermal efficiency is significantly improved.
This, combined with the structure of the combustion chamber equal heat exchange chamber 1, allows dramatic downsizing to be achieved.

That is, compared to the conventional device, it can be constructed with an occupied volume of about 50% to 60% and a path area of about 611 to 70%. In addition, since all of the combustion gas is configured to flow from one side of the heat exchange chamber 1 to the other side, the exhaust section 9 can be provided adjacent to the liquid pipe group 4c in the outer row, and this also allows It can make a major contribution to making the device more compact and simple.

(Effects of the Invention) As described above, the present invention has a configuration where the combustion chamber is equal to the heat exchange chamber, and the flow of combustion gas is uniquely configured to improve thermal efficiency, thereby making it possible to dramatically downsize the regenerator. It has advantages.

[Brief explanation of drawings]

FIG. Code 1... Heat exchange chamber, 2... Heated liquid wall, 3...
Parallel flow heat exchange section, 4...Liquid tubes, 4a...Liquid tube group in inner row, 4b...Liquid tube group in middle row, 4C...Liquid tube group in outer row, 5a... Inner shielding plate, 5b... Outer row shielding plate, 6... Upper communication part, 7... Lower communication part, 8
...Fin, 9...Exhaust part, IO...Burner, 1
1...Flame, 12...Liquid introduction tap

Claims (2)

[Claims] (1) A parallel flow heat exchange section is formed on one side of the heat exchange chamber configured with a heated liquid wall, and the other side of the heat exchange chamber is divided into an inner row of liquid tube groups, an intermediate row of liquid tube groups, and an outer row of liquid tubes. A shielding plate is provided between the liquid tubes constituting the liquid tube group in the inner row and between liquid tubes constituting the liquid tube group in the outer row, and an inner shielding plate provided in the inner row. An upper communication part is provided at the upper part of the outer shield plate, a lower communication part is provided at the lower part of the outer shielding plate provided in the outer row, a fin is provided in the liquid pipe in the middle row, and each liquid pipe is connected to the heated liquid wall. A vertical high-temperature regenerator for a gas absorption chiller/heater, the apparatus being configured to be in communication with the outer row and having an exhaust section adjacent to the outer row. (2) In the liquid pipe group described in item 1, the liquid pipes in each row are arranged in a staggered manner with respect to the liquid pipes in other rows.