SU1361443A2 - Helioabsorption thermotransformer - Google Patents

Abstract

The invention makes it possible to increase the efficiency of a thermal transformer. For this, the thermotransformer additionally contains tanks 11 and 12 of cold and warm water. In the lower part of the collection of 9 salt hydrates under the water cooler 8, a heat exchanger 10 is additionally installed, which is connected to the tanks by means of a regulating device. This design improves the working conditions of the adsorber. 1 il. about (L 12 with about: 4 liU WITH 14)

Description

The invention relates to refrigeration engineering, in particular to solar absorption thermotransformers, and is an improvement of the known thermotransformer according to the author. St. No. 992952.

The purpose of the invention is to increase the efficiency of a thermal transformer by improving the working conditions of the absorber.

The drawing shows a solar absorption sorbotransformator.

The thermotransformer contains a generator consisting of a solar heater 1 and an air desorber 2 placed in one housing of the absorber 3 and an evaporator 4, a solution regenerative heat exchanger 5 of irrigation type, accumulator 6, irrigator 7, water cooler 8, collection 9 salt crystallohydrates, a heat exchanger 10 installed in the lower part of the collector 9 of crystalline hydrates, cold 11 and warm 12 water tanks connected to the heat exchanger 10 using a regulating device consisting of a temperature sensor 13, is of the mechanism 14 and three-way valves 15 and 16. Furthermore, thermotransformer comprises pumps 17 and 18, users 19 and 20 of the cold and heat, the valves 21 - 24, check valve 25 and regulator 26, the solution level in the accumulator.

Helioabsorption transformer operates as follows.

During the daytime, when the intensity of solar radiation is maximal, the refrigerant vapors formed in the evaporator 4 are absorbed under vacuum in the absorber 3 with a saline solution, the concentration of which decreases. The weak solution from the absorber 3 is pumped 17 through the open valve 22 to the heat exchanger 5, where it is heated with a strong solution and sent to the solar heater 1 for heating. The hot solution is fed to an air stripper 2, where it is evaporated. The formed strong solution through the check valve 25 is fed through the irrigator 7 to the outer surface of the regenerative heat exchanger 5, where it is cooled with a weak solution. Then, a strong solution is cooled on the surface of the water cooler 8 to the temperature at which crystal formation begins. The crystals accumulate in collections.

Q

about 5 Q

0 5 Q g

five

ke 9 crystals. The liquid saturated solution flows through the holes made in the crystal collector 9 into the lower part of the accumulator 6, from where it is fed through the level regulator 26 to the absorber 3.

Upon the onset of a crystallization process, heat is absorbed or released. At the same time, when absorbing heat, the temperature of the crystalline hydrate decreases and the temperature sensor installed in the lower part of the collector 9 of salt hydrates gives a signal to the actuator 14, which connects the heat exchanger 10 to the cold water collection tank 11 using three-way valves 15 and -16. In the case of heat release during the formation of a crystalline hydrate, its temperature increases and the regulating device connects the heat exchanger 10 to the collection tank 12 of warm water. When crystallization stops, the temperature in the crystal hydrate collector becomes equal to the temperature of the solution (for LiCl solutions - H = 0 and LiBr - approximately 35-40 C), and the temperature sensor 13 outputs a signal to the actuator 14, which turns off the heat exchanger 10 using valves 15 and 16 from tanks-collections cold 11 and warm 12 water.

When the level of solar radiation decreases, the supply of the solution from the absorber 3 to the solar generator (ventil 22 is closed) stops, it is sent to the irrigator 7 (valve 21 is open) of the storage device 6, where it dissolves the crystalline hydrate salt in the collector 9. The solution is strengthened and through a regulator - a level26 is sent to adsorber 3.

When the crystalline hydrate is dissolved, the heat of dissolution is absorbed or absorbed. Temperature in the collection

The crystalline salt of the salt becomes higher or lower than the average temperature of the solution. Temperature sensor 13 outputs a signal to the actuator 14, which, depending on the temperature values, connects the heat exchanger

10k tank collector cold 11 or warm 12 wag. When all the crystals dissolve in the crystal hydrate collector, the average temperature of the solution is established, and the actuator 14 shuts off the heat exchanger 10 from the collection tanks 11 and 12.

 1361443

When the concentration drops, it is strong in that

the solution switches off the pumps 17 and 18. the improved working conditions of the absorber.

Thermotransformer does not work. A heat-transfer transformer additionally solo-supplies consumers with cold and warm water tanks,

It comes from collection tanks 11 and 12a in the lower part of the crystal collector (valves 23 and 24 are open). salt hydrates under a water cooler

Claims (1)

The invention additionally establishes a heat exchange. A helioabsorption thermotransfer connected to the tanks by means of Mator on auth. No. 992952, about tl and th regulating device ..