RU19145U1 - AIR TURBO-REFRIGERATING UNIT - Google Patents

Description

AIR TURBO-REFRIGERATING UNIT

The invention relates to air turbo-refrigeration units designed to simultaneously produce heat and cold.

A known installation for air conditioning, which contains a compressor with a drive, a heat exchanger with nozzles for supplying and discharging air (cooling medium), an expander, a fan blade wheel and a guide apparatus, the compressor is located inside the shell (a. St. No. 626318, class P 25B P / OO. 1978)

The disadvantage of this installation is the inability to control the air temperature at the outlet of the turboexpander. disabling sections, operational and periodic monitoring of the state of the heat exchanger during operation

Also known is air tube refrigeration unit (Russian patent No. 2120586, class F 25B 11/00). which is closest to the claimed. The installation has a compressor, a diffuser, and a built-in heat exchanger made up of separate sections mounted on flanges telescopically connected to the inner and outer casings and arranged in series along the air.

A disadvantage of the known installation is the incomplete use of the volume of the space where the sections of the heat exchanger are located, which reduces the heat transfer and thermal efficiency of the installation.

The objective of the present invention is to intensify heat transfer by increasing the surface area of heat transfer, which will significantly increase the efficiency of the entire turbo-refrigeration unit.

This is achieved by the fact that in an air turbo-refrigeration unit containing a compressor, a diffuser, an integrated heat exchanger made of separate main sections mounted on flanges and telescopically connected to the inner and outer cases, the heat exchanger is equipped with additional prismatic quadrangular sections located between the individual main sections and consisting of water pipes interconnected, with additional prismatic sections telescopically connected by tubes with separate main sections of the heat exchanger.

The gap for the passage of air cooled in the additional sections between the main sections of the heat exchanger is 2-0, the width of the upper base of the additional section of the heat exchanger, and the height of the outermost water pipes of the additional section of the heat exchanger is / g, 0.6-0.8 / 7 of height central water pipes of additional sections where

a - the width of the upper base of the additional prismatic section of the heat exchanger;

/ - the gap between the main sections of the heat exchanger;

/ 2 -height of the central water pipes of the additional section

heat exchanger; h, is the height of the extreme water pipes of the additional section of the heat exchanger.

In an air turbo-refrigeration unit, the sectional heat exchanger is made of two types of sections: the main and additional prismatic shapes, which form the maximum surface for the passage of cooled air along the outer perimeter, which ensures an increase in the heat exchange area by 35-40%, which increases the thermal efficiency of the installation.

In FIG. 3 - shows the layout of the sections of the heat exchanger and the parameters of the ratio of the elements.

An air turbo-refrigeration unit contains a compressor 1, a straightening device 2, connected to a compressor 1. A detecting housing 3 and an internal housing 4 of a diffuser 5. Connected to a straightening device 2. A heat exchanger 6 of a sectional design consists of two types of sections: main sections 7 and additional prismatic quadrangular shapes sections 8 telescopically connected by a pipeline 9 to individual main sections 7. The heat exchanger 6 is telescopically connected by the front flange 10 to the inner casing 4 of the diffuser 5. and the rear flange 11 with the outer casing 12 and the casing of the inlet structure 13 of the turbo expander 14. The output diffuser 15 is designed to supply cool air to the consumer. X1 additional sections 8 are blocks of a quadrangular prismatic shape, attached to the front 10 and rear flanges. 11 have a base upper 16 and lower 17 and water pipes central 18 and extreme 19. The minimum losses during the passage of air between the main sections 7 are provided by a gap / for the passage of air cooled in additional sections 8.

.2-0.3s /, where a is the width of the upper base 16 of the additional prismatic section 8.

The width (b) of the lower base 17 of the additional prismatic section 8 of the heat exchanger 6 depends on the number and size of the individual main sections 7 of the heat exchanger 6, as well as the height / 7 of the central water 18 additional prismatic sections 8. The height of the outermost water pipes 19 in the additional sections 8 of the heat exchanger 6 can be h 0.6-0.8 / 7 of the height of the central water water 18.de / - the height of the central water pipes 18 of the additional sections 8: / 7; - the height of the extreme water pipes of 19 additional sections 8.

The geometric dimensions of the additional prismatic sections 8 of the heat exchanger 6 are selected from the conditions of their most rational placement between the individual main sections 7. The size ratio is selected according to the results of experimental studies that provide optimal parameters for the process of air passage between sections 7 of the heat exchanger 6.

An air turbo-refrigeration unit works this way. The air is compressed and heated in the compressor 1 through a straightening apparatus 2 through a diffuser 5 and sent to a heat exchanger 6. which consists of separate main 7 and additional prismatic sections 8. during the passage of which it is cooled, for example by water, and enters a turbine expander 14 through the channels of the input device 13, where it is finally cooled and supplied to the consumer via the output diffuser 15. The water heated in the additional prismatic sections 8 is discharged by a coarse wire 9 into the water cavity of the main sections 7 of the heat exchanger 6. and of these, by the pipeline to the consumer.

This design of an air turbo-turbine plant with a heat exchanger design of two types of sections allows to increase heat transfer, which increases the efficiency of the installation.

Chief Engineer

Claims (2)

1. An air turbo-refrigeration unit containing a compressor, a diffuser, a heat exchanger made of separate main sections mounted on flanges and telescopically connected to the inner and outer cases, characterized in that the heat exchanger is equipped with additional prismatic quadrangular sections located between the individual main sections and consisting from water pipes interconnected, while additional sections are telescopically connected by tubes to individual main sections of heat exchanger. 2. The air turbo-refrigeration unit according to claim 1, characterized in that the gap between the individual main sections of the heat exchanger is f ≈0.2-0.3α - the width of the upper base of the additional section, and the height of the outermost water pipes of the additional section is h ₁ ≈0 , 6-0.8h are the heights of the central water pipes, where α is the width of the upper base of the additional prismatic section of the heat exchanger, f is the gap between the main sections of the heat exchanger, h ₁ is the height of the central water pipes of the additional section of the heat exchanger, h ₁ is the height of the extreme water pipes of the additional section of the heat exchanger.