Installation of indirect-evaporative air cooling

 

The invention relates to ventilation and air conditioning of various objects, such as a crane cabins metallurgical plants. Installation of indirect-evaporative air cooling provides consistently reported their ends with each other, with means for placing fluid heat exchangers with packages of plates forming the dry and wet channels associated with the first heat exchanger and in communication with the inputs of its dry and wet channels of the inlet pipe to the overall air flow associated with the second heat exchanger and in communication with the outputs of its dry channel outlet for the primary air flow is common to the heat exchanger and in communication with the outputs of their wet channel outlet for the auxiliary air flow with an exhaust fan and a fan to supply the total air flow, the wet channels of the first and second heat exchangers are plugged with plugs from the side communicated with each other ends of these heat exchangers, and inputs the wet channels of the second heat exchanger is in communication with the outputs of its dry channels. The second heat exchanger is located above the first heat exchanger, the means for placing the fluid of the second heat exchanger is disposed to each other and are coaxial to each other. The technical result of the proposed facility is the reduction of its dimensions in length without affecting the settings in / out air-conditioned air. 2 C.p. f-crystals, 4 Il.

The invention relates to the field of ventilation and air conditioning of various objects, such as a crane cabins metallurgical plants.

Known installation of indirect-evaporative air cooling, containing having means for placing fluid heat exchanger plate pack forming the dry and wet channels provided to the inputs of dry channels of the inlet pipe to the overall air flow provided to the outputs of the dry channels of the outlet for the main air flow and reported to the outputs of the wet channel outlet for the auxiliary air stream, the wet channels of the heat exchanger plugged from the input pipe to the overall air flow, and inputs the wet channels of the heat exchanger is in communication with the outputs of its dry channels (see and.with. The USSR 979796, CL F 24 F 3/14). In this setting, means for placing the liquid is in the lower part of the heat exchanger.

This installation does not provide a sufficiently low temperature conditioned air.

This unit is compared with the above allows to lower the temperature of conditioned air, because it has two heat exchanger.

The disadvantage of this setup is that it has a sufficiently large size in length.

Task nastojasih is managing to reduce its dimensions in length without affecting the settings in / out air-conditioned air.

The problem is solved in that the installation of indirect-evaporative air cooling, containing consistently reported their ends with each other, with means for placing the two liquid heat exchanger with packages of plates forming the dry and wet channels associated with the first heat exchanger and in communication with the inputs of its dry and wet channels of the inlet pipe to the overall air flow associated with the second heat exchanger and in communication with the outputs of its dry channel outlet for the primary air flow, common to these heat exchangers and reported to the outputs of their wet channel outlet for the auxiliary air flow with an exhaust fan and a fan to supply the total flow of the air, the wet channels of the first and second heat exchangers muted side communicated with each other ends of these heat exchangers, and inputs the wet channels of the second heat exchanger is in communication with the outputs of its dry channels, the second heat exchanger is located above the first heat exchanger, the means for placing the fluid of the second heat exchanger is located in a medium-height part of the package of plates, and outputs the wet channels of heat exchangers on the air flow can be installed valve for flow control of the air flow at the outputs of the wet channels of the first and second heat exchangers.

In addition, the means for placing the fluid of the first heat exchanger may be positioned at the middle height of the pack of his plate.

The difference of the proposed installation of indirect-evaporative air cooling from above is known, is closest to it, is that in her second heat exchanger is located above the first heat exchanger, the means for placing the fluid of the second heat exchanger is located in a medium-height part of the package of plates, and outputs the wet channels of heat exchangers are facing each other and are aligned with each other.

The location of the second heat exchanger above the first heat exchanger provides a flow of air in the second heat exchanger on the air flow in the first heat exchanger.

The location of means for placing fluid of the second heat exchanger in a medium-height part of the package of the plates provides the saturation of the material of the plates forming the wet channels of the heat exchanger along the entire length of these plates.

The direction of the outputs of the wet channels of the heat exchangers to each other and the location of these outputs are coaxial to each other provides the connection threads moist air two HEA is length without compromising parameters in / out air-conditioned air.

Installation in the outlet port for the auxiliary air flow valve for flow control of the air flow at the outputs of the wet channels of the first and second heat exchangers allows you to adjust the costs of the air flow at the outputs of these channels.

The location of means for placing fluid of the first heat exchanger in a medium-height part of the package inserts allow you to increase the height of these plates.

The proposed installation of indirect-evaporative air cooling is illustrated in the drawings, is shown in Fig.1-4.

In Fig. 1 shows a General view of the installation of indirect-evaporative air cooling slit wet channel; Fig.2 - section a-a in Fig.1; Fig.3 - section b-B in Fig.1; Fig.4 - section b-b of Fig.1.

Installation of indirect-evaporative air cooling provides consistently reported their ends with each other, with means for placing fluid heat exchanger 1 heat exchanger 2 packages of plates 3 forming a dry channel 4 and the wet channel 5, associated with the first heat exchanger 1 and is in communication with the inputs of its dry and wet channels 4 and 5 of the inlet pipe 6 for the overall air flow associated with the second heat exchanger 2 and oommented and reported to the outputs of their wet channel 5 outlet 8 for the auxiliary air flow with exhaust fan 9 fan 10 to supply the total air flow, the wet channel 5 of the first and second heat exchangers 1 and 2 is plugged by plugs 11 side communicated with each other ends of these heat exchangers, and the inputs 12 wet channels 5 of the second heat exchanger 2 is in communication with the output 13 of his dry channel 4.

The second heat exchanger 2 is located above the first heat exchanger 1, the means for placing the fluid of the second heat exchanger 2 is located in a medium-height part of the package of plates 3, and the outputs 14 of the wet channel 5 these heat exchangers are facing each other and are aligned with each other.

Means for placing liquid such as water to the second heat exchanger 2 may be performed, at least in one cross-section located in the plate pack 3 rows of containers 15, installed in dry and wet channels 4 and 5. Some of the walls of the container 15 are formed by the plates 3. Capacity 15 communicated with each other through holes 16 made in the plates 3, and have a pipe 17 for supplying and discharging fluid. In this specific example, the heat exchanger 2 has two spaced according to the height of a number of containers 15.

Means for placing fluid of the second heat exchanger 2 may be performed, at least in the form of one tank (can not be installed valve 18 to regulate the expenses of the air flow at the outputs 14 of the wet channel 5 of the first and second heat exchangers 1 and 2.

Means for placing fluid of the first heat exchanger 1 can be located in a medium-height part of the package of plates 3. This tool can be made identical to the means for placing the fluid of the second heat exchanger 2. This tool can also be made in the form of a pallet (not shown) located in the lower part of the heat exchanger 1.

Plate 3 are impermeable to liquid coating 19 and capillary-porous material 20.

Position 21 marked the adjusting screw for the valve 18, the position 22 to the connecting pipe that connects the heat exchangers 1 and 2, position 23 to the intake of outdoor air in the inlet pipe 6, and the position of the 24 - conditioned building.

Installation of indirect-evaporative air cooling works as follows.

The total flow of the air sucked by the fan 10 from the conditioned space 24, through the inlet pipe 6 enters the dry and wet channels 4 and 5 of the heat exchanger 1. Of the wet channel 5 of the heat exchanger 1 (see Fig.1) air enters the outlet 8 of the auxiliary air flow. From the dry channels 4 of the heat exchanger 1, the air flows into the connecting pipe 22, and into the dry channels 4 of the heat exchanger 2. Output the output conduit 8 of the auxiliary air flow. Moving air wet channel 5 heat exchangers 1 and 2, and the outlet nozzle 8 is provided by an exhaust fan 9. Regulation costs of air currents at the outputs 14 of the wet channel 5 heat exchangers 1 and 2 is performed by the rotation of the valve 18 by means of an adjusting screw 21. Another part of the air from the dry channels 4 of the heat exchanger 2 enters the outlet 7 of the main air flow, and air-conditioned building 24.

Replenishment of fresh air entering the heat exchanger 1, occurs through the intake 23.

Dry channel 4 and the wet channel 5 heat exchangers 1 and 2 are in heat exchange relationship. The air passing through the wet channel 5 along the walls of the capillary-porous material 20 plates 3 (moistened with water from tank 15 through the capillary wetting), is cooled by evaporation of water from the surfaces of the material to cool the stream of air passing through the dry channels 4.

In the heat exchanger 1, the air flow without changing its moisture content, is cooled to the temperature of the wet thermometer, and then passing through the dry channels 4 of the heat exchanger 2, douglasdale to the dew point.

The location means (vessels 15) for placing fluid in the middle the plate 3 along their entire length. In other words eliminates the drying of capillary-porous material 20 plates 3 of the heat exchanger 2 in the places of the auxiliary air flow in the outlet 8.

Thus, the technical result of the proposed facility is to reduce its dimensions in length without affecting the settings in / out air-conditioned air.

Claims

1. Installation of indirect-evaporative air cooling, containing consistently reported their ends with each other, with means for placing the two liquid heat exchanger with packages of plates forming the dry and wet channels associated with the first heat exchanger and in communication with the inputs of its dry and wet channels of the inlet pipe to the overall air flow associated with the second heat exchanger and in communication with the outputs of its dry channel outlet for the primary air flow is common to the heat exchanger and in communication with the outputs of their wet channel outlet for the auxiliary air flow with an exhaust fan and a fan to supply the total air flow, the wet channels of the first and second heat exchangers muffled by soo what outputs it dry channels, characterized in that the second heat exchanger is located above the first heat exchanger, the means for placing the fluid of the second heat exchanger is located in a medium-height part of the package of plates, and outputs the wet channels of heat exchangers are facing each other and are aligned with each other.

2. Installation under item 1, characterized in that the outlet port for the auxiliary air flow installed valve for flow control of the air flow at the outputs of the wet channels of the first and second heat exchangers.

3. Installation under item 1, characterized in that the means for placing the fluid of the first heat exchanger is located in a medium-height part of the package of plates.

 

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