RU1789848C - Evaporating cooling gas heat exchanger - Google Patents

Abstract

Usage: cooling liquid and gas in various technological processes and air conditioning systems. Summary of the invention: the heat exchanger comprises a casing (1) with inlet and outlet pipes (2,3) and an adjustable shutter (4) in the output pipe (3). The space between the end grids (5 and 6) is filled with a hydrophilic material (7) with longitudinal channels (8) and pipes (9) of a moisture-proof material. The casing (1) is provided with a nozzle (12) connected to the chamber (11). From the side of the outlet pipe (3), the channels (8) are in communication with the pipes (9), the pipe

Description

The invention relates to the design of heat exchangers, in particular heat exchangers of an air-evaporative type, and can be used to cool gas in various technological processes and in air conditioning systems, as well as to cool any fluid substances.

The purpose of the invention is to increase the degree of cooling and expand the scope of application.

In FIG. 1 is a schematic sectional view of the proposed heat exchanger; figure 2 - cross section aa in fig. 1.

The heat exchanger contains a casing 1 with inlet and outlet pipes 2, 3, and the output pipe 3 is equipped with an adjustable damper 4. In the casing 1 there are end grids 5 and 6, the space between which is filled with a hydrophilic material 7 with longitudinal channels made in it 8. In addition, pipes 9 made of a moisture-proof material are placed in the hydrophilic material 7. The casing 1. is equipped with a tube sheet 10, placed on the side of the inlet pipe 2, and the camera 1-1. Moreover, the pipes 9 are fixed in the tube sheet 10, In addition, the casing 1 is equipped with a pipe 12 connected to the chamber 11, and from the side of the output pipe 3, the channels 8 are in communication with the pipes 9. The heat exchanger is also equipped with a tray 13, where liquid (water) is poured which wets the hydrophilic material 7, in order to eliminate the vacuum that may occur in the sump 13, the latter has openings 14 connected to the atmosphere. In addition, the inlet pipe 2 and the outlet pipe 3 are provided with tube sheets 15 and 16, in which a tube bundle of pipes 17 is fixed. From the side of the inlet pipe 2, the tube sheets 10 and 15

Xi 00

Yu

00 4 00

ho

form a collector associated with the inlet pipe 18. The pipe 12 is equipped with a suction fan 19, and the pipe 2 is a blower fan 20.

The heat exchanger operates as follows. Cooled gas or other flowing gas from the fan 20 is pumped into the pipe 17, through which the gas is cooled without changing its moisture content. Through the outlet pipe 3 it is sent to the consumer. Adjustable damper 4 provides regulation of the flow rate of the cooled gas. At the same time, external air enters through the inlet pipe 18, which is sent to the pipes 9. They are pre-cooled in the air in the chamber 11 section due to heat exchange with a reverse air flow that enters the chamber 11 from the channels 8. Here, the reverse flow crosses exactly with respect to the pipes 9 and is sucked into the atmosphere through the nozzle 12 by the fan 18f. Preliminarily damping in chamber 11, the air flow is further cooled by movements inside the tubes 9. The outer surface of these tubes is in contact with the hydrophilic material 7, the capillary icpToporci is moistened with water poured into the pan 13. At the outlet of the tubes 9, the cooled air flow is rotated 180 ° and directed flows into channels 8, the surface of which consists of a moistened hydrophilic material 7. When the return air flows in the channels 8, its surface heat and mass transfer occurs with a countercurrently moving flow of cooled gas Extending inside the pipe 17 and direct the air flow passing inside the pipe 9, through heat and massoobmen- hydrochloric surface consisting of a surface water resistant pipes 9, 17 and

wetted hydrophilic material 7. In the process of this process, the flow of cooled gas (at the outlet of the pipes 17) is the same. like the direct air flow itself (at the outlet of the pipes 9), it is cooled in the limit to the temperature of the dew point of the outdoor air without changing its moisture content, and the return air flow in the channels 8 is heated (by taking heat from the gas being cooled and from its own direct water flow) and moisture (due to evaporation of moisture from hydrophilic material 7). Next, the return air stream at the exit of the channels 8 enters the chamber 11, where it cross-precisely exchanges heat both with the gas to be cooled and with its own direct stream. As a result of this process, the gas to be cooled and the direct air stream are pre-cooled, and the return air stream removed to the atmosphere is heated to the limit. It is sucked into the atmosphere through the nozzle 12 to the temperatures of the incoming flows.

Claims (1)

SUMMARY OF THE INVENTION Heat exchanger for evaporative gas cooling No. 1768910, characterized in that, with the whole i. increasing the cooling and expanding areas of the HIGHLIGHTS, B; a casing on the chamber’s sides An additional collector is installed, connected to the gas inlet pipe and bounded by a tube plate, and on the gas outlet side, a second tube plate is installed in the casing and a tube bundle for a cooled medium passing through the collector chamber is fixed in both tube plates and hydrophilic material. WITH Editor T. Shagova Compiled by V. Dobrotvortsev Tehred M. Morgenthal Corrector N. Milyukova Order 343 Mintage Subscription VNIIIPI of the State Committee for Inventions and Discover at the USSR State Committee for Science and Technology 113035, Moscow, Zh-35, Rauska nab., 4/5