Indirect evaporative air cooling device

FIELD: air conditioning.

SUBSTANCE: proposed indirect evaporative air cooling device has housing with tray, pipes for feeding and discharging, general, main, and auxiliary air streams, blowdown and drawing fans, and evaporation head incorporating capillary-porous plates separated by corrugated water-tight partitions. Capillary-porous plates are open on both ends and form so-called wet channels together with corrugated partitions wherein evaporation process cools down entire air stream being forced. Plates are made of permeable magnetic material that has bonding adhesive base and spatially oriented particles of magnetic filler characterized in high heat conductivity, corrosion resistance, and magnetization.

EFFECT: enhanced stability of evaporation head, enlarged cold-productivity range, provision for dispensing with regular washing of porous plates.

1 cl, 3 dwg

 

The invention relates to techniques for air-conditioning.

There are settings for indirect evaporative cooling of air, comprising a housing with a sump, pipes for inlet and outlet of the main and auxiliary air flows, packages are installed in series plates having alternating surfaces, in pairs forming channels of waterproof material for the main air flow and capillary-porous for the auxiliary air flow[1], [2].

The disadvantage of these devices is the low efficiency of use of natural cooling capacity of the air, and the slow process of heat transfer due to the significant thermal resistance of a capillary-porous material and waterproofing. In addition, the low cooling efficiency occurs due to the evaporation of moisture from one side only, as the other closed waterproofing.

Also known installation [3], taken as a prototype, comprising a housing with a sump and pipes for the supply of the General and allotment of the main and auxiliary air flows, the inlet and the suction fans, accommodated in the housing plate of the capillary-porous material, separated from each other double corrugated plate of vysokoteploprovodnyh moisture-proof material, form the s channels General and supplementary air flow. Last plugged on the end side of the intake pipe.

The disadvantage of this setup is the dependence of the wetting of porous plates from the salt deposits of water hardness at its surface evaporation that results in obliteration of a significant part of the pores and a significant reduction in cooling capacity.

In view of the above disadvantage of the device type [3] to ensure the stable operation require a sleek system as separate devices that are installed on the water supply line. Most often these systems are devices magnetic impact type[4], [5].

The device [4], [5] contain the housing defined therein magnetic end caps between which is placed alternating magnetic poles with a dielectric tube and the magnetizing coil, the lines of force which pass inside the unit. Either device type [4], [5] there is a body of diamagnetic material, permanent magnets and rectangular channel, the side faces of which are formed of twenty pairs of samarium-cobalt permanent magnets, zachorowania steel magnetic core.

The disadvantages of devices of the type [4], [5] are as follows -

1. these systems are General purpose devices, they are not adapted specifically for softening slowly seeping through the pores of the moisture that is in photospreteen cooling;

2. they are too energy-intensive for use in photospreteen the air coolers, material-intensive and difficult to manufacture.

These and the above-mentioned drawbacks identified the problem, the solution of which the invention is directed.

This task is to increase the efficiency of evaporative nozzles, water softening and to prevent silting then deposits them in salt water hardness.

The solution of the stated problem is achieved in that the device for indirect evaporative cooling of air, comprising a housing with a sump and pipes for the supply of General and auxiliary exhaust airflow, the inlet and the suction fans, accommodated in the housing plate of the capillary-porous and waterproof materials that form open at both ends, "dry" and closed with the input end of the wet channels respectively a square and a "wet" channels respectively square and triangular cross-section, according to the invention, the capillary-porous plate made of a permeable magnetic material consisting of a binder adhesive and spatially oriented ferromagnetic particles filler having a high thermal conductivity, corrosion resistance and magnetization.

The proposed device is illustrated by drawings where rest 1 shows a longitudinal section of the device, figure 2 is a partial cross-section, figure 3 - microstructure of porous magnetic material.

Device for indirect-evaporative air cooling figure 1. includes a housing 1 with the pallet 2 and the nozzles 3, 4 and 5 for the supply of General Ltotaland removal of the main Lcoreand auxiliary LVSPair flows. The pipes 3 and 5 are forcing 6 and 7 suction fans. In building the nozzle 8, consisting of a plate pack 9 (2), made of capillary-porous permeable magnetic material. Plates separated by a pair of corrugated watertight bulkheads 10 (figure 2) so that they form two "wet" 11 and one "dry" 12 channels. At the end of the corrugation of the tear so that the wet channels become closed.

Capillary-porous permeable magnetic material (figure 3) produced by means of a binder adhesive 13 connecting particles 14 corrosion-resistant ferromagnetic filler (for example, fine sawdust Nickel). The porosity of such material is provided by a percentage and viscous properties of the binder adhesive and the amount of ferromagnetic filler. Have also a value of the dispersion characteristics and the geometry of the filler particles. Properties of porous magnetic material allows the molecules proacive the Xia moisture to repeatedly cross the magnetic lines of force of the elementary magnets of the filler, therefore, the dipoles of water and salt ions come to an excited energy state, preventing the intense salinity of the pore.

The device operates as follows.

The total air flow supplied through the pipe 3 and is blown by the fan 6 to the nozzle 8. In the pipe 4, the total flow is divided into primary, going to the consumer, and auxiliary, sucked by the fan 7. At the moment countercurrent movement of the auxiliary stream evaporates the moisture from the magnetic capillary-porous surfaces, transporting fluid with simultaneous softening of water cools the surface and through them the General air flow.

The proposed design provides stability evaporative nozzle, forcing capability of the device speed purge eliminates the need for regular washing of porous plates from salinization.

The sources of information.

1. USSR author's certificate No. 407519, CL F 24 F 3/14, 1972

2. USSR author's certificate No. 979796, CL F 24 F 3/14, 1976

3. RF patent for the invention №2150639, CL F 24 F 3/14, 2000 prototype.

4. RF patent for the invention №2077503, CL 02 1/48 F, 1997

5. RF patent for the invention №2089512, CL 02 1/48 F, 1997

Device for indirect evaporative cooling of air, comprising a housing with a sump and pipes for the supply of the General and allotment basically is about and auxiliary air flows, the pumping and suction fans, accommodated in the housing plate of the capillary-porous and waterproof materials that form open at both ends, "dry" and closed with the input end of the wet channels respectively square and triangular cross-section, characterized in that the capillary-porous plate made of a permeable magnetic material consisting of a binder adhesive and spatially oriented ferromagnetic particles of a filler having a high thermal conductivity, corrosion resistance and namagnichivaemost.



 

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