KR200221381Y1 - Structure of generator in an absorption chiller - Google Patents

Abstract

The present invention relates to a regenerator structure of a medium temperature water absorption chiller. The purpose of the present invention is to construct a regenerator composed of a shell in which absorbent solution flows and a heat pipe in which warm water flows as a heat source. With the flow as the counter flow, the temperature is uniformly maintained throughout the shell, and the operating temperature of the regenerator is kept higher than the outlet temperature of the hot water, which is the heat source. It is to provide a regenerator structure for a high freezer.

The structure of the present invention is a conventional medium temperature water absorption chiller, wherein the regenerator has a plurality of regenerator shell inner solution turbulence plate (11) formed at the lower portion of the regenerator shell partition (12) with one side open. Dividing the solution flow into several by dividing into regenerator shells (3-1, 3-2), and the solution passage (10) to the regenerator shell partition (12) so as to communicate with the next shell (3-2) on the opposite side of the inlet (9) of the solution. The structure of 1) is formed so that the heat source hot water and the absorbent solution flow in opposite flows to each other.

Description

Structure of generator in an absorption chiller

The present invention relates to a regenerator structure of a medium temperature water absorption chiller, and more particularly, to a full boiling regenerator.

Generally, absorption chiller is a means of evaporating condensed water, which is a refrigerant, in a vaporized evaporator to recover cold water for cooling, and recovering refrigerant vapor evaporated in the process of making cold water in an evaporator. After absorbing the refrigerant from the absorber and absorber and the regenerator for making the diluted lithium bromide solution into a concentrated solution, and a condenser for condensing the refrigerant vapor generated from the regenerator, and sends the condensation refrigerant to the evaporator to use as a refrigerant Concentrated liquid is sent to the absorber to absorb the refrigerant is configured to enable continuous cold water production operation.

In the regenerator of the absorption chiller, a regenerator of an absorption chiller using mid-temperature water using 90-120 ° C. hot water is used as a heat source of the regenerator. The regenerator structure of the commercially available medium-temperature water chiller is a pool boiling method and a falling film. It can be classified into two types, such as film boiling method.

The regenerator structure of the conventional pool boiling water absorption chiller uses a one-pass solution in the regenerator composed of one shell, and a multipass flow structure for the hot water side due to the flow rate of the hot water. Have

Absorption chiller using warm water takes only the sensible heat of the heat source as the energy source, so the higher the temperature difference between the inlet and outlet of the heat source hot water, the higher the energy utilization rate. However, in the current regenerator structure, the outlet temperature of the hot water source can not be lower than the driving temperature of the regenerator. The operating temperature of the refrigerator is lowered and the concentration of the concentrate in the regenerator is lower than the appropriate value. As a result, the absorption capacity is lowered. Therefore, the heat transfer area of the absorber and the evaporator needs to be increased.

1 is a side view of a regenerator of a conventional chilled water absorption chiller, and FIG. 2 shows a flow chart of a solution in a regenerator plane. A regenerator of a conventional chilled water chiller is supported by a tube 6 in a single shell 2 structure. It consists of a support plate 4 for, and a tube (6), etc., the condenser is installed on top of the regenerator and consists of a tube (7), a support plate (5) and the refrigerant receiver (8).

The rare solution enters the regenerator inlet (9), concentrates and exits to the opposite outlet (10) and is sent to the absorber.

The refrigerant heated by the hot water inside the regenerator tube (6) and evaporated in the regenerator is condensed in the condenser. At this time, the hot water side, which is the heat source, is designed as a multiple pass, and the number of passes is a path design factor such as the hot water flow rate and the temperature difference between the solution and the hot water. It is determined by the efficiency according to.

However, in the conventional form, the above pass design factors cannot be satisfied at the same time, and in particular, since the temperature difference between the solution and the hot water is not uniform throughout the shell, there is a limit in increasing the regeneration efficiency.

In order to solve the above problems, an object of the present invention is to make the structure of the regenerator a multi-pass flow method, and the flow of fluid in the regenerator shell side through which the absorbing solution flows and the regenerator heat pipe side through which hot water as a heat source flows. It provides a regenerator structure for a smaller and more efficient freezer by maintaining a uniform temperature difference throughout the shell and maintaining the operating temperature of the regenerator higher than the outlet temperature of hot water as a heat source to produce a concentrate close to an appropriate concentration to promote absorption. have.

The purpose of the regenerator and condenser (upper float) of the absorption chiller for medium temperature water is to divide the regenerator into a shell (two in the embodiment of the present invention) in one shell structure, and the hot water as a heat source flows into the regenerator heat pipe. But

Reducing the size of the regenerator because the solution flows higher than the outlet temperature of the heat source medium temperature water by allowing the solution flowing to the regenerator shell side and the heat transfer of the regenerator and the flow of the heat source water flowing inside to be opposite to each other. Of course, as the solution is absorbed, the size of the evaporator and the absorber can be reduced while increasing the efficiency of the device.

In addition, by connecting the shells in a cascade structure, the solution flow between the shells is smooth and the solution level in each shell is properly maintained.

1 is a side structure diagram of a regenerator of an existing chilled water absorption chiller,

Figure 2 is a flow chart of the solution in the existing medium temperature hot water absorption chiller regenerator plane,

3 is a schematic structural view of a player of the present invention;

4 is a solution flow diagram in the schematic regenerator plane of the present invention.

<Explanation of symbols for main parts of the drawings>

(1): solution passage (2): regenerator shell

(3-1, 3-2): Regenerator shell (4): Regenerator tube support plate

(5): condenser tube support plate (6): regenerator tube

(7): condenser tube (8): condensation refrigerant receiver

(9): solution inlet (10): agricultural solution outlet

11: solution turbulence plate inside the regenerator shell

12: regenerator shell divider

If described in detail in connection with the accompanying drawings the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the task for removing the conventional drawbacks.

3 is a schematic side view of the regenerator of the present invention, and FIG. 4 illustrates a flow chart of the solution in the regenerator plane. In the regenerator of the absorption chiller for mid-temperature water of the present invention, the regenerator shell partition 12 having one side open at the regenerator is shown. The solution flow is divided into several (two in the embodiment of the present invention) by dividing into a plurality of regenerator shells (3-1, 3-2) having a regeneration shell inner solution turbulence plate 11 formed therebetween. The solution passage (1) is placed in the regenerator shell partition (12) so as to communicate with the next shell (3-2) on the opposite side of the inlet (9) side of the solution, and the plurality of regenerator shells (3-1) and the shell (3-2) ) Is arranged in a stepped structure so that the solution flows naturally.

The condensation refrigerant receiver 8, which receives the condensation refrigerant under the condenser tube support plate 5 supporting the condenser tube, located above the regenerator, has a horizontal structure that is not inclined.

In addition, the solution between each shell or inside the shell is moved by the natural liquid level and the solution level in each shell of the regenerator during operation is appropriately maintained, and the number of shells of the regenerator may be varied as necessary.

Reference numeral 4 denotes a regenerator tube support plate, 6 a regenerator tube, 7 a condenser tube, 9 a rare solution inlet, and 10 a concentrate solution outlet.

The present invention configured as described above maintains the temperature difference uniformly throughout the shell by using the structure of the regenerator as a multi-pass flow method and the flow of fluid at the shell side through which the absorption solution flows and the regenerator heat transfer tube side where the hot water as the heat source flows. In addition, by maintaining the operating temperature of the regenerator higher than the outlet temperature of the hot water as the heat source to make a concentrated solution close to the appropriate concentration to promote the absorption capacity.

That is, the regenerator is divided into several shells in one shell structure, and the hot water as a heat source flows into the regenerator heat pipe, but the flow of the shell side as the solution and the tube side as the heat source hot water are opposed to each other so that the temperature of the agricultural solution is the heat source medium temperature. It can be higher than the outlet temperature of the water, making it possible to prepare a higher concentration of the solution than before.

In addition, the shells are connected in a cascading structure to facilitate solution flow between the shells and to maintain appropriate solution levels in each shell.

The present invention is not limited to the above-described specific preferred embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The structure of the regenerator of the present invention absorption chiller configured as described above is applicable to all absorption chillers for producing cold water using hot water, and greatly improves the efficiency of the regenerator, the size of the regenerator and condenser (upper float) of the absorption chiller. In addition to reducing the volume of water, as the preparation of agricultural solutions increases, the absorption capacity in the hop harvester increases, reducing the number of heat pipes in the evaporator and absorber (lower dong), reducing the size of the lower dong, thereby reducing the installation space and initial installation cost. Improved efficiency and improved hot water use efficiency can reduce hot water consumption, reducing operating costs.

The advantages of the present invention are summarized as follows.

1. As the efficiency of regenerator is increased, the number of regenerator heat pipes is reduced, and at the same time, the absorber and evaporator heat pipes are also reduced due to the improvement of absorption capacity according to agricultural solution production.

2. The cascading arrangement of the regenerator shells ensures proper solution level inside each shell, thus reducing the solution injection volume.

3. Operation and maintenance costs are reduced by improving regeneration efficiency and reducing hot water consumption.

Claims (2)

In a conventional medium temperature water absorption chiller having a regenerator having a structure in which hot water is used as a driving heat source, and hot water, which is a heat source, flows into the regenerator heat pipe and an absorption solution flows to a shell outside the regenerator heat pipe. The regenerator is divided into a plurality of regenerator shells 3-1 and 3-2 having a regenerator shell inner solution turbulence plate 11 formed therebetween with a regenerator shell partition 12 having one side open. Dividing the flow into several, and forming the solution passage (1) in the regenerator shell partition (12) to the opposite side of the inlet (9) side of the solution to the next shell (3-2) so that the heat source hot water and the absorbing solution are opposed to each other A regenerator structure of a medium temperature hot water absorption chiller characterized by flowing structure. The method of claim 1, The regenerator structure of the water-cooled absorption chiller using the hot water according to claim 1, wherein the connection structure between the shells of the regenerators is a stepped structure having a step difference so that the solution flow between the shells is moved by a natural drop.