KR0147458B1 - Regenerating apparatus for absorptive airconditioner for small heat assembling power generator - Google Patents

Abstract

The regeneration apparatus of the absorption chiller for small cogeneration according to the present invention is shown in FIG. In the present invention, a regenerator (2) having a large size is used as a regeneration device for generating refrigerant vapor by heating and concentrating the diluted solution in the absorber (4). However, in the present invention, the rare solution generated in the absorber (4) is used as an engine coolant heat exchanger. (20) and the exhaust gas heat exchanger (21) by heating the gas-liquid separator (2a) to separate the concentrated solution and the refrigerant vapor, so the size is much smaller than the existing regenerator, heat exchanger (15) for making hot water for the heat source is The present invention relates to a regeneration device for an absorption type refrigerator for small cogeneration combined with the need for two heat exchangers (21, 20), which is not necessary, thereby simplifying the system structure and making it possible to reduce the size and weight.

Description

Regeneration device for absorption chiller for small cogeneration

1 is a system diagram of a regeneration device of an absorption chiller for a conventional small cogeneration system.

2 is a system diagram of a regeneration device for an absorption refrigerator for small cogeneration according to the present invention.

* Explanation of symbols for main parts of the drawings

1. Conventional Hot Water Absorption Chiller 1a. Absorption Chiller

2. Player 2a. Gas-liquid separator

3. condenser 4. absorber

5. Evaporator 6. Solution Heat Exchanger

7. Cooling tower 8. Air conditioner

15. Heat Exchanger for Absorption Chiller Heat Source 16. Engine Coolant Heat Exchanger

17. Engine 19. Exhaust gas heat exchanger

18. Generator 20. Engine coolant heat exchanger

21. Exhaust gas heat exchanger 30. Refrigerant pump

31. Solution Pump

The present invention relates to a regeneration device for an absorption chiller for a small cogeneration system in order to simplify the structure of the entire system and to reduce the weight of the absorption chiller when a cooling device using waste heat of the small cogeneration system is installed.

Absorption chillers are used to combine air conditioning refrigerators in a small cogeneration system that uses engines such as gas to drive the engine and generates electricity by this driving force, and uses hot water produced using exhaust gas heat and waste water from the engine's cooling water. .

However, the conventional regeneration apparatus of the absorption type refrigerator for small cogeneration is low because the temperature of the hot water supplied is low in order to heat the rare solution generated in the absorber to generate steam and concentrate the size of the regenerator.

In other words, the conventional miniature cogeneration absorption type freezer has a plurality of heat exchangers (16, 19, 15) to make the heat source hot water for heating the rare solution in the regenerator as shown in Figure 1 and the regeneration method is also There is a problem in that the structure is complicated and bulky because the concentrated solution that enters the many heat transfer tubes in (2) and is heated and regenerated is sprayed on the surface of the heat transfer tube.

An object of the present invention is to solve such a problem, by heating the rare solution generated in the absorber during cooling using waste heat in a small cogeneration system that supplies hot water for power generation and cooling and heating using a fuel such as gas In constructing a regeneration device that separates the concentrated solution and the refrigerant vapor, the gas-liquid separator is heated by heating the rare solution above the boiling point by an engine coolant heat exchanger that receives the heat of the engine's cooling water and an exhaust gas heat exchanger that receives the exhaust gas heat of the engine. In (2a), a new regeneration device for separating the concentrated liquid and the refrigerant vapor is provided to simplify the structure of the system, thereby enabling compact and light weight.

With reference to the accompanying Figure 2 attached to the regeneration device of the absorption refrigerator for small cogeneration according to the present invention will be described in detail as follows.

First, the configuration of the present invention, the absorption chiller (1a) comprising a gas-liquid separator (2a) is installed in place of the conventional regenerator, the heat source of the absorption chiller (1a) and the drive shaft is connected to the generator 18 and the inside The engine coolant heat exchanger 20 which is connected to the coolant of the engine 17, the coolant of the engine 17 and the rare solution of the absorption chiller 1a, and performs heat exchange, and the exhaust pipe through which the engine exhaust gas is discharged. And an exhaust gas heat exchanger 21 for exchanging heat between the rare solution and exhaust gas, and a pipe connected to the exhaust gas heat exchanger 21 and the gas-liquid separator 2a.

Operation of the present invention by the above configuration is as follows.

The rare solution generated in the absorber (4) of the absorption chiller (1a) is sent to the engine coolant heat exchanger (20) through the pipe (9) by the solution pump (31), heat exchanged with the coolant of the engine, and heat concentrated. The exhaust gas heat exchanger 21 is heated to a boiling point higher than that of the engine coolant and the exhaust gas, and is pumped to the gas-liquid separator 2a through the pipe 22 to the gas-liquid separator 2a.

The rare solution heated by the above process is separated into the concentrated solution and the refrigerant vapor in the gas-liquid separator 2a, and the concentrated solution is sent to the absorber 10 through the solution heat exchanger 6 and generated in the evaporator 15. The vapor absorbs the vapor, the refrigerant vapor flows into the condenser (3) to condense to become a refrigerant liquid and then transferred to the evaporator (5) is operated in the same manner as the operation of the conventional absorption chiller.

In the present invention, a device for generating a refrigerant vapor by heating and concentrating a rare solution generated in the absorber 4 is used as a heat exchanger tube group. However, in the present invention, a rare solution generated in the absorber 4 is used. It is heated and concentrated directly in the engine coolant heat exchanger (20) and the exhaust gas heat exchanger (21), and instead of the regenerator, the gas-liquid separator (2a) separates the concentrated liquid and the refrigerant vapor, which is much smaller than the conventional regenerator. The use of (2a) eliminates the need for a heat exchanger (15) for making hot water as a heat source of the regenerator (2), and since the few heat exchangers (21, 20) are sufficient, the system structure is simplified and the size of the absorption chiller is small. There is an excellent effect that the weight can be reduced.

Claims (1)

In the regeneration device of an absorption type refrigerator for small cogeneration, an engine coolant heat exchanger in which coolant circulating the heat of the engine (17) is circulated, and a rare solution passed through the solution heat exchanger (6) is introduced to exchange heat with the coolant ( 20) and an exhaust gas heat exchanger 21 connected to the engine coolant heat exchanger 20 and installed in an exhaust pipe through which the exhaust gas of the engine 17 passes, to exchange heat between the rare solution and the exhaust gas; A pipe 22 through which the rare solution heated to the exhaust gas heat exchanger 21 is discharged, and a gas liquid separator 2a connected to the tube 22 and separating the heated rare solution into a concentrated solution and a refrigerant vapor. Regeneration device for absorption chiller for small cogeneration.