RU2221969C1 - Indirectly evaporative air cooling plant - Google Patents

Abstract

FIELD: air ventilation and conditioning equipment for buildings. SUBSTANCE: device has body with inlet connection pipe and outlet connection pipe for air main flow, and outlet pipe for air additional flow. Plate block covered with waterproof material and capillary- porous material is located in body. Plate block forms dry and wet channels. Device has at least one transverse row of vessels arranged in plate block medium part and defined by wet channel side walls. Vessels connect each other and comprise water supply and discharge means formed, for example, as connection pipes. Vessels communicate each other by tubular members arranged in dry channels. EFFECT: increased heat-exchanging performance. 2 cl, 6 deg

Description

 The invention relates to the field of ventilation and air conditioning in the premises.

 A device for indirect-evaporative cooling of air is known, comprising a housing with inlet and outlet nozzles for the main and auxiliary air flows, a stack of plates forming dry and wet channels, and at least one transverse row located in the middle of the stack of plates longitudinally placed in dry and wet channels, interconnected containers having means for supplying and discharging water (see patent of the Russian Federation 2073174, class F 24 F 3/14). In this device, containers are made in the form of perforated tubes for supplying water.

 This device does not have a sufficiently high intensity of heat transfer properties.

 The objective of the present invention is to develop the design of a device for indirect evaporative cooling of air, which allows it to increase the intensity of heat transfer properties.

 The problem is solved in that in the device of indirect-evaporative air cooling, comprising a housing with inlet and outlet nozzles for the main and auxiliary air flows, a set of plates installed in it, forming dry and wet channels, at least one located in the middle of the package plates transverse row longitudinally placed in the wet channels, connected with each other containers, the walls of which are formed by the plates, and a means for supplying and discharging water into these containers, containers communicated with each other hom through tubular elements placed in dry channels.

 In this case, the tubular elements can be staggered in the longitudinal plane passing through the containers.

 The difference between the proposed device for indirect evaporative cooling of air from the above known, closest to it, is that its tanks are communicated with each other by means of tubular elements placed in dry channels.

 This allows you to communicate the capacity of the wet channels with each other by means of tubular elements, and not by means of containers placed in dry channels. This, in turn, allows to increase the heat transfer area of the dry channel plates.

 Thus, the technical result of the proposed device is to increase its intensity of heat transfer properties.

 The location of the tubular elements in a checkerboard pattern in a longitudinal plane passing through the tanks eliminates the stagnation of water in the tanks and is the most optimal option for solving the problem.

 The proposed device for indirect evaporative cooling of the air is illustrated by the drawings shown in figures 1-6.

Figure 1 shows a General view of the proposed device;
figure 2 is a view aa in figure 1;
figure 3 - view BB in figure 1 (in the embodiment of the arrangement of tubular elements in a checkerboard pattern);
figure 4 is a view bb in figure 2;
figure 5 is a view of GG in figure 2;
Fig.6 is a view of BB in Fig.1 (a variant of the parallel arrangement of tubular elements).

 The indirect evaporative air cooling device includes a housing 1 with an inlet pipe 2, with an outlet pipe 3 for the main and with an outlet pipe 4 for auxiliary air flows, a plate pack 5 installed in it, with a waterproof coating 6 and capillary-porous material 7, which form dry channels 8 and wet channels 9, at least one transverse row located in the middle of the package of plates 5 longitudinally arranged in the wet channels 9, connected with each other containers 10, the walls 11 of which are formed by plates 5, and means for supplying and discharging water to these containers 10, made in this particular example in the form of nozzles 12 for supplying water and nozzles 13 for draining water.

 Tanks 10 are communicated with each other by means of tubular elements 14 placed in dry channels 8.

 The tubular elements 14 can be staggered in a longitudinal plane passing through the tank 10.

 Position 15 denotes plugs for the removal of the auxiliary air flow into the outlet pipe 4.

 In this particular embodiment, two rows of containers 10 are shown.

 The device may also have a tray (not shown in the drawings) with water in the lower part of the housing 1, the lower parts of the plates 5 can be lowered into this tray. The plates 5 can be arranged horizontally in this device (not shown in the drawings).

 The inventive device operates as follows. The total air flow supplied by the fan (not shown) through the inlet 2 passes through the dry channels 8 and wet channels 9, which are in heat transfer relation. The auxiliary air stream passing through the moist channels 9 along the walls and capillary-porous material 7 moistened with water due to capillary wetting from the tanks 10 is cooled by evaporation of water from the surfaces of this material 7 and cools the main air stream passing through the dry channels 8.

 Cooled without changing its moisture content, the main air stream through the dry channels 8 through the outlet pipe 3 is supplied to the consumer. The auxiliary air stream, having moistened and taking away heat from the main air stream, enters through the moist channels 9, deviating with plugs 15, to the outlet pipe 4, and from it to the atmosphere.

 Water in the tank 10 enters through the nozzles 12. Water is discharged through the nozzles 13. Water from one tank 10 to another enters through the tubular elements 14 located in the dry channels 8.

 The location of the tubular elements 14 in a checkerboard pattern in a longitudinal plane passing through the tank 10, eliminates the stagnation of water in these tanks.

 The communication of the containers 10 of the wet channels 9 with each other by means of tubular elements 14 located in the dry channels 8, allows to increase the heat exchange area of the plates 5 of the dry channels 8.

 This allows you to increase the intensity of the heat transfer properties of the proposed device.

Claims (2)

1. An indirect evaporative air cooling device, comprising a housing with inlet and outlet nozzles for the main and auxiliary air flows, a package of plates installed in it, forming dry and wet channels, at least one transverse row of longitudinally placed in the middle of the plate package in moist channels connected to each other by containers, the walls of which are formed by plates, and means for supplying and discharging water into these containers, characterized in that the containers are communicated with each other by tubular elements placed in dry channels. 2. The device according to claim 1, characterized in that the tubular elements are staggered in the longitudinal plane passing through the container.

Images