SU571668A1 - Device for indirect evaporative cooling of air - Google Patents

Description

The invention relates to ventilation and air conditioning.

Devices for indirectly evaporative air cooling are known, comprising a housing with a water tray and mixed inside a housing partially heat-immersed two-layer heat exchangers with moisture-proof and capillary-porous layers and {} dry and wet channels formed by plates {1j .

However, in known devices, the cooling process is not intensive enough due to the poor wettability of the capillary-porous material, since in the evaporation process the necessary flow of water from this surface to the volume of the auxiliary flow exceeds the flow of water rising along the capillaries.

In addition, the restriction of the capillary height of water in height reduces the capabilities of the various structural components of this device, which limits the area of application. For example, it does not make

Designed for high performance devices.

The aim of the invention is to attenuate the cooling process.

This is achieved by the fact that the moisture-proof layer has a loop-like shape, and the capillary-porous layer is made in the form of a closed conveyor with driving and driven rollers installed at the bend points.

FIG. 1 shows the device, a general view; in fig. 2 is the same cross section; in fig. 3-plates with moisture-proof and capillary-porous layers in axonometry.

The device for indirectly evaporative air cooling comprises a housing 1 with a pallet 2 and heat-exchange double-layer plates 3 with moisture-proof, 4 and capillary-porous 5 layers placed inside the housing 1. Plates 3 form alternating dry channels 6 for the passage of the total air flow and wet canaps 7 .; for the passage of auxiliary air.

The impermeable junction 4 is made in the form of a pet-shaped 8, and the cap-and-rim porous 5 is made in the form of an automatic transporter 9, where the leading and driven ropi 1O are installed at the bend points. The housing of the device has connections 11-13 for the auxiliary and main air flows. At the ends of the dry channels 6 from the side of the nozzle 12 of the auxiliary flow of the partition wall 14, a device for indirect cooling of the air works as follows. The total air flow enters the device through pipe 11, moves through the dry ducts 6 and is cooled in them without changing its content. Due to the presence of aerodamic resistance, our common flow is divided into two flows, the main and the auxiliary, at the output of the device. The main flow through the nozzle 13 is directed to the consumer (cooled) p and the auxiliary flow enters the wet channels 7, in which the air flow flows countercurrently. At the same time, the main flow through a double-slab plate with moisture-proof capillary-porous layers transfers its heat30 to the auxiliary air flow, and the water evaporates from the surface of the rolling fluid (capillary porous foam 1Pbod 5 into its volume). 12 select-35

is released into the environment. In this case, the auxiliary stream; air is heated by cooling the main air stream and is moistened by evaporation

water from the surface of the kippippn-porisgogo zpo 5.

The capillary-porous layer 5 was removed. Sources of irregularities taken into account in the examination.

1, USSR Author's Certificate No. 407519, kg. G24 F3 / 14, 1972. in the form of a closed conveyor, as it moves, it is moistened with the henter and additional pallet 2. This allows you to wet the capillary-porous layer 5 evenly and efficiently, regardless of the operation of the device and deterioration of the capillary properties of layer 5. the wettability of the capiplary-porous layer 5 allows to significantly increase the efficiency of the device, since it increases the active surface of heat exchange, therefore, increases the amount of evaporated water, which takes away the latent heat of vaporization from the total of air flow. An inventive device for indirectly evaporative air cooling, comprising a housing with a water tray and heat exchange two-layer plates partially immersed in water with moisture-proof and capillary-porous springs and alternate dry in wet channels formed by the plates, differing in water with the fact that, with the chain of intensification of the cooling process, the waterproof seal is loop-shaped, and the capillary-porous layer is made in the form of a closed conveyor installed in estah kinks and leading. led by the role of kamy

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