SU817421A1 - Absorption-compression refrigerating unit - Google Patents

Description

one

The invention relates to refrigeration technology, and more specifically to absorption and compression refrigeration units.

Absorption-compression refrigeration units containing high and low pressure generators with steam cavities connected to each other through a compressor equipped with a drive and with lines of weak and strong solutions, the last of which includes a heat exchanger-regenerator and absorber with a pump, a condenser connected to a liquid refrigerant line with a gas subcooler, throttle valve and evaporator, whose vapor space is connected

CALL (through the cooling cavity of the gas -. Subcooler to the absorber

A disadvantage of the known installations is their low efficiency due to a significant decrease in cooling capacity when using low-grade heat for heating high and low pressure generators.

“The purpose of the invention is to increase efficiency.

This goal is achieved in that the installation is equipped with a high-pressure absorber with its pump, an intermediate vessel with its gas subcooler and a throttle valve, as well as an additional heat exchanger-regenerator, and the high-pressure absorber with its pump is included in the line of strong solution in front of the heat exchanger regenerator, intermediate vessel with its gas cooler and throttle valve are included in the liquid refrigerant line after

5 condensers, and the vapor space of the intermediate vessel through the cooling cavity of its gas superheater is connected to the high-pressure absorber, and the additional

0 heat exchanger regenerator is included in the line of strong and weak solutions between the high pressure generator and the absorber. In addition, the compressor drive is designed as

5 of a steam turbine connected at the inlet to the low-pressure generator, and at the outlet to the high-pressure absorber.

In the drawing, a schematic representation of

Claims (2)

0 Lena we offer installation. The installation contains a high generator 1 and a low pressure generator 2, a compressor 3, lines 4 and 5, respectively, of weak and strong solutions, heat exchanger-regenerator 6, absorber 7f pump 8, condenser 9, line 10 of liquid refrigerant gas subcooler 11, throttle valve 12, evaporator 13, high pressure compressor 14 with its pump 15, intermediate vessel 16 with its gas subcooler 17 and throttles with valve 18, additional heat exchanger-regenerator 19, steam turbine 20, additional throttle valves 21-23 and liquid refrigerant 24 The unit operates as follows. In the low pressure generator 2, refrigerant vapors are released from the solutions, which are drawn up to the condensing pressure of the compressor 3. At the same time, in the high pressure generator, refrigerant vapors are also released from the solution, which, mixing with the vapors leaving the compressor 3, enters the condenser 9, in which it is liquefied. The resulting liquid refrigerant is cooled with water in the cooler 24, then the supercooler is given in gas subcoolers II and 17 and through the throttle valve 18 enters the intermediate vessel 16, the pressure in which is the same as in the absorber 14 high pressure. neither Next, the liquid refrigerant enters through the throttle valve 12 into the evaporator 13, in which low pressure boils under low pressure, producing a cooling effect. The resulting vapors from the evaporator 13 flow through the chiller cavity of the gas subcooler 11 into the absorber 7, in which they absorb a weak solution coming from generator 1, which is pre-cooled in the heat exchanger-regenerator 19 and reduce its pressure in the throttle valve 23. Strong solution of. the absorber 7 is supplied by the pump 8 through the second cavity of the heat exchanger of the regenerator 19 again to the generator 1. The compressor 3 is designed as a steam turbine 20, which uses for its work some of the refrigerant vapor generated in the generator 2. The waste steam after the turbine 20 comes along with the steam leaving from intermediate vessel 16 to high pressure absorber 14. The strong solution formed here is supplied by the pump 15 through the regenerator 6 exchanger-6 to the low-pressure generator 2. A weak solution from generator 2 is fed through the second cavity of the heat exchanger-regenerator 6 and the throttle valve 21 is new in the absorber 14. At this time the refrigerant and solution circuits are rolled. The proposed installation provides a reduction in the cost of heat expended in the production of cold, as well as the possibility of efficient use of secondary thermal resources, usually discharged into. swirling environment. Claim 1. Absorption-compression refrigeration unit containing high and low pressure generators with steam cavities interconnected through a compressor equipped with a drive and with lines of weak and strong solutions, the last of which includes a heat exchanger-regenerator and an absorber with pump, a condenser connected by a liquid refrigerant line to a gas subcooler, a throttle valve and an evaporator, the vapor space of which is connected through a gas subcooled cooling cavity Adapter to the absorber, characterized in that, in order to improve efficiency, it is equipped with a high-pressure absorber with its pump, an intermediate vessel with its gas sub-cooler and a throttle valve, as well as an additional heat exchanger-regenerator, and the high-pressure absorber with its pump is included in the line of strong solution in front of the heat exchanger-regenerator, the intermediate vessel with its gas subcooler to the throttle valve are included in the liquid refrigerant line after the condenser, and the vapor space of the intermediate vessel through the cooling cavity of its gas reflux unit is connected to the high-pressure absorber, and the additional heat exchanger-regenerator is connected in the line of strong and weak solutions between the high-pressure generator and the absorber. 2. Installation according to claim 1, characterized in that the drive of the compressor is made in the form of a steam turbine connected at the inlet to the low generator and at the outlet of the high pressure absorber. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 118828, cl. F 25 V 25/02, 1957.