SU1333997A2 - Absorption bromide/lithium refrigerating plant - Google Patents

Abstract

The invention makes it possible to reduce power consumption during the start-up period and increase the operational reliability of the installation. Dp of this high pressure generator (HPV) 11 is equipped with a float shut-off device (ROM) 12, which interrupts the release of refrigerant vapor to the low pressure generator (MLA) 13. A weak solution from the absorber enters the HPV 11. The solution level in the HDV 11 increases during the start-up period , and ROM 12 closes the output (L 1H

Description

refrigerant vapor from the HDV 11, preventing solution from entering the evaporator. The solution from the high pressure pump 11 enters the MLA 13, where it lags before boiling, as a result of which the pressure in the high pressure pump 11 increases and the level of the solution decreases -. ROM 12 opens the refrigerant vapor outlet from the high pressure steam generator 11 to the MLA 13, where the vapors condense and evaporate. The strong solution from MLA 13 is poured into the absorber, all over the vapor of the refrigerant from the evaporator, is again weakened and directed to the ball

The invention relates to refrigeration engineering, in particular to absorption bromide-lithium plants.

The purpose of the invention is to reduce power consumption during the start-up period and increase operational reliability.

The drawing shows schematically the proposed absorption-bromistolithium refrigeration unit.

The refrigeration unit contains the evaporator 1 and the absorber 2, placed in a common housing and communicating with each other through the vapor space, circulation pumps 3 and 4 for circulating the liquid refrigerant and solution in the evaporator and in the absorber, respectively, pump 5 for feeding the weak solution from the absorber 2 for regeneration, preheaters 6–8 cobalt solution, superheater 9 weak solution from external heat source, choke 10, high pressure generator 11, float stop device 12, low pressure generator 13, l The unit 14 exits the refrigerant vapor from the generator 11 into the tube space of the generator 13, the condenser 15, the strong solution line 16, the condensate line 17 after the generator 13, the condensate line 18 after the condenser 15 and the shut-off valves 19-22.

Refrigeration unit operates as follows.

The weak solution from absorber 2 is pumped through pumps 4 and 5 through preheating

as above. The low pressure refrigerant vapor from the MLA 13 enters the condenser and the liquid refrigerant formed there enters the evaporator. The evaporator also drains the condensate formed by the condensation of high pressure refrigerant vapor, which is also used as a refrigerant. Refrigerant vapors formed in the evaporator are absorbed by the solid solution in the absorber. 1 silt

five

drives 6-8 to the superheater 9, from where the solution through the choke 10 enters the high-pressure generator 11. The level of solution in the generator 11 during the start-up period increases, and the float shut-off device 12 closes the line 14 for the refrigerant vapor out of the generator 11 into the tube space of the generator 13, preventing the solution from entering the evaporator 1. The solution from the generator 11 enters the generator 13 through the annular space of the heater 8 In this case, the heat supplied to the superheater 9, the solution is brought to a boil, as a result of which the pressure in the generator 11 increases, the level of the solution decreases, and the float locking device 12 opens The vapor outlet line of the refrigerant from this generator into the tube space of the generator 13. High pressure refrigerant vapor, condensing in the tube space of the generator 13, is evaporated in the annular space of this generator partially fortified solution coming here from the generator 11 through the heater 8. From the generator 13, the strong solution through line 16 is discharged through heater 6 to absorber 2, in which, after being filled with refrigerant vapor from evaporator 1, is again weakened and directed by pumps 4 and 5 to evaporation, as is 5 minutes Kazan higher. Low pressure refrigerant vapors from generator 13 post0

0

drip into condenser 15, where they are condensed, and the liquid refrigerant that forms in line 18 is drained into evaporator 1, which boils at low pressure, producing a refrigerating effect. In the evaporator 1, through line 17, condensate formed during the condensation of high-pressure refrigerant vapor in the tube space of the generator 13, which is also used as a refrigerant, is also drained via the heater 7. Formed in the evaporator 1 refrigerant vapor

Claims (2)

absorbed in a strong solution in the absorber 2. The formula of the invention Absorption bromide lithium cooler installation according to ed. St. No. 652417, characterized in that, in order to reduce power consumption during the start-up period and increase operational reliability, the high-pressure generator is provided with a float-type shut-off device that blocks the release of refrigerant vapor to the low-pressure generator.