RU1800244C - Absorption refrigerating plant - Google Patents

Description

The invention relates to refrigeration equipment, in particular absorption heat transfer transformers for producing cold.

The purpose of the invention is to increase profitability ..

The drawing shows a diagram of an absorption refrigeration unit.

The installation contains a condenser 1, a military subcooler 2, a gas subcooler 3, an evaporator 4, a reversed rectifier 5, absorbers 6 and 7 of low-temperature and high-temperature circuits, a pump 8 for hardened mortar, pumps 9 and un-solutions of low-temperature and high-temperature circuits, a coil drainage of the solution through the absorber 6, heat exchangers 12 and 13 of the solutions of the low-temperature and high-temperature circuits, generators 14 and 15 of the low-temperature and high-temperature circuits, coils 16 and 17 reverse from solution water through generators 14 and 15, heater 18, steam superheater 19, reflux rectifiers 20 and 21 of generators 14 and 15, butterfly valves 22,23, 24, 25, 26 and 27, shutoff valves 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, mixer 40, receiver 41. Strong solution and hydraulic shutter 42.

The absorber 7 is made in the form of a bundle of pipes located inside the generator 14, which is located above the reflux condenser-rectifier 21 of the generator 15. The pipes of the generator 15 are connected to the heating coolant line, and the generator pipes 14, used as the absorber 7 of the high-temperature circuit, contain heater pipes 18 connected to the line of the low-temperature coolant, for example to the condensate line of the heating coolant at the outlet of the generator 15.

Additional lines and valves of the installation make it possible to change the mutual arrangement of devices, which makes it possible to turn a system with two solution circuits into a single-circuit one.

Refrigeration unit operates as follows.

Refrigerant vapors from the reflux condenser-rectifier 20 enter the condenser T, cooled by water or air. The liquefied refrigerant, passed through a water subcooler 2 and a gas subcooler 3, is fed through a throttle valve 22 to the evaporator 4. In the evaporator 4, the refrigerant boils at low pressure, producing cold. Steam generated through gas subcooler 3

and the reverse distillation agent 5 is sent to the absorber 6, where it is absorbed by a weak solution, the heat generated by this is removed. driven by water or air. Part of the strong solution formed in the absorber-6

along the line with a throttle valve 23 it is discharged into a reversed rectifier 5, where, by exchanging heat and mass with steam, it is strengthened. The reinforced solution by pump 8 is supplied for cooling and irrigation of the reflux condenser-rectifier 20.

In winter time, the solution in the installation circulates along two circuits with parallel switching on of the devices of the same name, while valves 30, 33, 34, 36 and 38 are closed. A strong solution from the absorber 6 of the low-temperature circuit by the pump 9 through the return coil 11, through the heat exchanger 12 and the valve 31 is fed into

generator 14, where it boils, after which a weak solution from the generator 14 through valve 39, coil 16, valve 32, heat exchanger 12 and throttle valve 24 is returned to the absorber 6. Part of the vapor from the absorber 6 through the valve 28, through the superheater 19 and the hydraulic . the shutter 42 enters the absorber 7 of the high-temperature circuit located in the pipes inside the generator 14. In the absorber 7, the solution is absorbed. rum and a strong solution of che - formed. cut valve 29, enters the receiver 41, and from it is sucked in by a pump 10, which through the heat exchanger 13 and valve 37 pumps the solution into the generator 15 of the high-temperature circuit. In the generator 15, the solution boils and a weak solution is formed through the coil 17, the valve 35, the heat exchanger 13, the throttle valve 25 and the mixer 40 are returned to the absorber 7. The heating medium circulating through

to the pipes of the generator 15, the steam enters the reflux condenser 21. In the last steam, I strengthened with the part of the strong solution discharged after the pump 10 through the throttle valve 26, and with the part of the weak solution 5 discharged from the generator 14 through the throttle valve 27 is present and enters the generator 14 in a state equilibrium with its weak solution. This steam, mixed with the steam distilled off in the generator 10 due to the heat generated by the absorbers 7 and the heat given off by the low-temperature coolant circulating in the heater 18, enters the reflux condenser 15 20 by a common stream . From the reflux condenser-rectifier 20, as already indicated above, the steam enters the condenser 1.

Claims (1)

In the summer, the solution circulates along one circuit c. 20 devices connected by the same name, with valves 25, 26, 27, 28, 29, 31, 32, 35, 37 and 39 closed. A strong solution from the absorber 6 by pump 9 through the coil 11, through the heat exchanger 12 and valve 30 is fed to 25 for secondary injection into pump 10, and then through the heat exchanger nickname 13 and valve 36 enters the generator 14. The solution first boils in the generator 14, and then, draining through the reflux condenser-rectifier 21, it continues .30 flow: to the generator 15. A weak solution from the generator 15 through the coil 17, valve 38, coil 16 and valve 34 enters the heat exchanger 1.3 and through valve 33, the heat exchanger 12 and the throttle valve 24 35 is returned to the absorber 6. Driven by t ashes of the heating coolant circulating in the pipes of the generator 15, steam through. the reflux condenser-rectifier 21 enters the generator 14 and, mixed with 40 steam stripped therein, the total flow - ..,. enters the reinforcement in the reflux correction apparatus 20. The steam in the generator 14 is distilled off either due to the heat of the coolant leaving the generator 15 and circulating through the pipes of the heater 18, or due to another coolant of a reduced temperature. Heat from the coolant in the heater 18 is mainly transmitted through its finned outer surface. Formula is an e-.ten and an Absorption refrigeration unit containing an evaporator and low and high temperature circuits with their own absorbers, steam lines connected to the evaporator, their own strong solution pumps, solution heat exchangers and generators with rectifier reflux condensers and reverse return coils a weak solution, and the pipes of the absorber of the high-temperature circuit are located inside the generator of the low-temperature circuit, with the exception that, in order to increase the economic In addition, the low-temperature circuit generator is equipped with a heater, the pipes of which are located inside the absorber pipes of the high-temperature circuit and are connected to a heat source of low potential, while the return coil of the high-temperature circuit generator is connected to the return coil of the low-temperature circuit generator, the last heat exchanger is connected firmly solution to the pump of the high-temperature circuit, the heat exchanger of which, in turn, is connected via a weak solution to the heat exchange low temperature circuit, and the generator of the latter is placed above the reflux condenser-rectifier of the high-temperature circuit generator and connected to it in pairs directly and through the solution through a drain line with a butterfly valve.