CN101065632A - Cooling tower - Google Patents
Cooling tower Download PDFInfo
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- CN101065632A CN101065632A CN 200580040673 CN200580040673A CN101065632A CN 101065632 A CN101065632 A CN 101065632A CN 200580040673 CN200580040673 CN 200580040673 CN 200580040673 A CN200580040673 A CN 200580040673A CN 101065632 A CN101065632 A CN 101065632A
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- 238000001816 cooling Methods 0.000 title claims abstract description 184
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims description 86
- 238000005057 refrigeration Methods 0.000 claims description 80
- 230000006835 compression Effects 0.000 claims description 22
- 238000007906 compression Methods 0.000 claims description 22
- 230000002745 absorbent Effects 0.000 claims description 21
- 239000002250 absorbent Substances 0.000 claims description 21
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 abstract description 7
- 239000006096 absorbing agent Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
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Abstract
A method of operating an evaporative cooling tower comprising: contacting the water with air in a cooling zone to cool the water and heat the air; and cooling the heated air to condense water therefrom, thereby reducing water loss from the cooling tower. Generally, cooling of the heated air is performed by means of evaporative cooling using a refrigerant.
Description
Technical field
The present invention relates to a kind of cooling tower.Especially, it relates to a kind of method of operating cooling tower, and can be according to the cooling tower of this method operation.
Summary of the invention
According to a first aspect of the invention, provide a kind of method of operating wet cooling tower, it comprises: contact water with cooling water with air and add hot-air at cooled region; And will be heated the air cooling with from condensed water wherein, thereby reduce the water loss of cooling tower.
The cooling of heated air can be carried out by means of the evaporative cooling of adopting cold-producing medium (such as freon).The evaporative cooling of heated air can be provided by compression refrigerating system.Alternatively, the evaporative cooling of heated air can be provided by absorbent refrigeration system.
Thereby the cooling stack that wet cooling tower can be cooling with the air that moves upward and heated air to carry out at its certain height or level place.This method can comprise that in the cooling elevation-over of heated air, the air that heating moves upward is to promote the ventilation in the cooling tower.
Refrigeration system can comprise and is arranged in a condenser and an evaporimeter in the loop.Evaporimeter can be in air that height lower in the cooling tower moves upward with cooling and by condensation from wherein removing water, and condenser can be positioned the dry air that the evaporimeter top moves upward with heating, to promote the ventilation in the tower.Can exist several such circuit, each has its oneself compressor, condenser etc.
Cooling tower has adopted the filler with drift eliminator usually, and drift eliminator can be for tabular and in tower above the filler.Evaporimeter can comprise be positioned among one or more drift eliminators or on one or more coils and condenser can comprise among the one or more drift eliminators that are positioned at the evaporator coil top or on one or more coils.
According to a further aspect in the invention, in a kind of cooling stack, its type is for being used for extensive water cooling in the employed water cooling of thermo-power station, and it comprises common concrete hollow housing, described housing on the plane for circular and have and in side outline, be concavity and parabola shaped wall, thereby the bottom of tower raises from ground on pillar etc. and provides the air inlet that extends circumferentially and this tower to comprise the filler that is positioned at its lower end in its lower end and be used for moisture to be cooled is fitted on water distribution system on the filler, the memory of water below filler enters tower, and air upwards is circulated throughout filler and goes out with cooling water from the top of tower from air inlet by free convection, a kind of method of operating wherein is provided, it is included in the filler top, the air that moves upward of cooling is with from condensed water wherein, thereby reduces the water loss of tower at the place, top.
This method can comprise that the elevation-over in that the air to upwards motion cools off heats to promote the ventilation in the cooling tower the air that upwards moves.
The cooling of the air that moves upward can be by being undertaken by compression refrigerating system or evaporative cooling that absorbent refrigeration system provided.Refrigeration system generally includes and is arranged in a condenser and an evaporimeter in the loop.Evaporimeter can be positioned in the tower filler top with last air to motion is cooled off and by condensation with water from wherein removing, and condenser can be positioned on dry air that the evaporimeter top moves upward with heating to promote the ventilation in the tower.
Cooling tower has adopted the drift eliminator that is arranged in tower filler top usually.The evaporimeter of refrigerating circuit can comprise be positioned among one or more drift eliminators or on one or more coils, and the condenser of refrigerating circuit can comprise among the one or more drift eliminators that are positioned at the evaporator coil top or on one or more coils.
According to another aspect of the invention, a kind of wet cooling tower is provided, it comprises and is used for water is contacted with air with cooling water and add the cooled region of hot-air, and is used for the heated air from cooled region is cooled off with from the wherein refrigeration or the cooling system of condensed water.
In one embodiment of the invention, refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled compression refrigerating system.Compression refrigerating system can be arranged to cool off the height place of described air and heat cooled air being higher than refrigeration system.
Compression refrigerating system generally includes one or more cooling circuits, and each cooling circuit comprises condenser and evaporimeter, and links to each other with expansion valve with coolant compressor.
Each cooling circuit thereby can comprise by turbine drives and alternatively via the compressor of gear-box.Gear-box if any words then between turbine and compressor.Turbine can be driven by the current to be cooled that enter cooling tower.
In another embodiment of the present invention, refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled absorbent refrigeration system.Cold-producing medium is the gas that dissolves in the liquid flux.Absorbent refrigeration system can be arranged to heat cooled air being higher than the height place that this absorbent refrigeration system cools off described air.
Absorbent refrigeration system generally includes one or more cooling circuits, and each comprises generator, condenser and evaporimeter, and links to each other with expansion valve.The generator in each loop can be positioned at the cooling tower outside.
Cooling tower generally includes filler and drift eliminator.Each evaporimeter can comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
According to another aspect of the invention, a kind of cooling stack is provided, its type is for being used for extensive water cooling in the employed water cooling of thermo-power station, and it comprises common concrete hollow housing, described housing on the plane for circular and have and in side outline, be concavity and parabola shaped wall, thereby the bottom of tower raises from ground on pillar etc. and provides the air inlet that extends circumferentially and this tower to comprise the filler that is positioned at its lower end in its lower end and be used for moisture to be cooled is fitted on water distribution system on the filler, the memory of water below filler enters tower, and air upwards is circulated throughout filler and goes out with cooling water from the top of tower from air inlet by free convection, this cooling tower also comprises and is used for above the tower filler refrigeration system that the air to upwards motion cools off, with from condensed water wherein.
In one embodiment of the invention, refrigeration system is to be used for by means of cold-producing medium the air that upwards moves being carried out transpiration-cooled compression refrigerating system.This compression refrigerating system can be arranged to be cooled off the height place of described air the air that moves upward that has been cooled is heated being higher than compression refrigerating system.
Compression refrigerating system generally includes one or more cooling circuits, and each comprises condenser and evaporimeter, and links to each other with expansion valve with coolant compressor.Can exist several this cooling circuits.
Each cooling circuit thereby comprise by turbine drives and alternatively via the compressor of gear-box.Gear-box if any words then between turbine and compressor.Turbine can be driven by the current to be cooled that enter cooling tower.
In another embodiment of the present invention, refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled absorbent refrigeration system, and cold-producing medium will be the gas that dissolves in the liquid flux.This absorbent refrigeration system also can be arranged to the air that moves upward that has been cooled be heated being higher than the height place that absorbent refrigeration system cools off described air.
This absorbent refrigeration system generally includes one or more cooling circuits, and each comprises generator, condenser and evaporimeter, and links to each other with expansion valve.Can exist several this cooling circuits.The generator in each loop can be positioned at the cooling tower outside.
The cooling tower of described type adopts the tabular drift eliminator that is arranged in tower filler top usually.Each evaporimeter can comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
If evaporator coil and condenser coil can by on the drift eliminator that is positioned to separate or they be on the same drift eliminator by means of the air gap or insulating materials and spaced apart, to avoid direct heat transmission therebetween, because drift eliminator is preferably Heat Conduction Material (such as copper) to promote corresponding cooling of evaporator coil and condenser coil and heating.
Description of drawings
Now with reference to appended schematic diagram the present invention is described by way of example, in the accompanying drawings:
Fig. 1 shows the side view according to cooling tower part section of the present invention;
Fig. 2 schematically shows the compression refrigeration circuits that is used for cooling tower shown in Figure 1;
Fig. 3 shows the schematic side elevation of the component parts in the drift eliminator that is used for cooling tower shown in Figure 1 and loop shown in Figure 2;
Fig. 4 shows the section end view on the line IV-IV direction of drift eliminator shown in Figure 3 in Fig. 3;
Fig. 5 schematically shows the absorption refrigeration circuits that is used for another embodiment of the present invention;
Fig. 6 shows the schematic side elevation of another embodiment of drift eliminator; With
Fig. 7 shows the section end view on the line VII-VII direction of drift eliminator shown in Figure 6 in Fig. 6.
The specific embodiment
In Fig. 1 of accompanying drawing, reference number 10 is generally represented according to cooling tower of the present invention.Cooling tower 10 is the natural ventication cooling towers that are used for extensive water-cooled in thermo-power station.Cooling tower 10 comprises hollow concrete shell 12, and it is circular in plane and has its profile in side view is concavity and Parabolic wall.The bottom 14 of housing 12 is the air inlet 18 of 16 risings to provide all border district to extend from ground.Housing 12 is supported on the pillar 20.Up to the height of about air inlet 18, use the filler of making by for example timber, asbestos etc. 22 to fill from the lower end of tower.Filler can allow air-flow and current see through and the packing material that water can flow downward thereon when using cooling tower 10 is provided, and is used for transpiration-cooled big air/water surface area thereby provide.Filler 22 is supported on the vertical support 21, and vertical support 21 also is used for supporting following water distribution system, drift eliminator etc.
Cooling tower has main hot water and enters pipe 23, and it for example radially inwardly extends into tower 10 bottoms from the power station in ground level, arrives the middle position with standpipe (riser) 24.Schematically show as Fig. 1, extend from the top of standpipe 24 by means of a plurality of radially extension 26, one water distribution systems that are connected to a plurality of injectors 28.Radial tubes 26 has a plurality of arm (not shown), and radial tubes and arm all provide injector 28, so that at the height place at filler 22 tops, have multiple downward sensing, equally distributed injector 28, be used for the water to be cooled from pipe 23 is ejected into filler 22 downwards.Provide holder 30 below tower 10, it enters cooling water outlet pipe 32 with cooling water, is used for cooling water is turned back to power station (usually by means of unshowned pump).Elevation-over at pipe 26 and injector 28 provides a plurality of drift eliminators 34.These drift eliminators provide the multiple elongated flat board that is spaced apart from each other in the parallel array mode, the vertically essentially horizontally extension of each drift eliminator, and extend basically vertically on the plane of each drift eliminator.Thereby, if each drift eliminator 34 is considered as elongated rectangular flat metal plate, so its long limit will be level and its minor face will be vertical.
In Fig. 2, show standpipe 24.At the upper end of standpipe 24, has the manifold 36 of radial tubes of being fed into 26.Turbine 38 is arranged shown in the standpipe 24, and it has the output shaft 40 that extends to compressor 44 via gear-box 42.Compressor 44 has constituted the parts of employing freon as the compression refrigeration circuits 46 of cold-producing medium.Loop 46 comprises condenser 48, evaporimeter 50 and expansion valve 52, and condenser 48 is connected between the outlet of expansion valve 52 and compressor 44, and evaporimeter 50 is connected in again between the import of expansion valve 52 and compressor 44.
With reference to Fig. 3 and 4, the Reference numeral of drift eliminator is 34.Drift eliminator 34 comprises a pair of attached Face to face copper sheet, and is formed and makes drift eliminator 34 have two groups of pipes 54 that extend along its opposing longitudinal edges, and the profile of drift eliminator 34 is an elongated rectangular.In use, drift eliminator 34 will be arranged such that its long limit like that flatly extends as mentioned above and shown in Fig. 3 and 4, constitute the parts of the evaporimeter 50 in loop 46 as shown in Figure 2 so that manage 54 the group that goes up.Groove 56 heart in the drift eliminator 34 is extended, with opposing from the pipe 54 disadvantageous direct heat transmission of the pipe 54 of condenser 48 to evaporimeter 50.
Be contemplated that in use a plurality of compression refrigeration circuits (such as number is four) will be provided in the cooling tower 10, its type is shown among Fig. 2 46.In these loops 46 each will have by gear-box 42 compressor driven 44.The compressor 44 in each loop will have the outlet that is connected to multiple drift eliminator 34, and described drift eliminator 34 for example is arranged in sees 90 ° of quadrants that are in tower at plane.The condenser 48 of upward organizing thereby will form described loop 46 of the pipe 54 of the drift eliminator 34 that described compressor 44 is connected to.These pipes 54 will be fed into common flowline, and will be through relevant expansion valve 52, and cold-producing medium will turn back to compressor 44 via evaporimeter 50 thus.Each group down that evaporimeter 50 comprises pipe 54 in the drift eliminator 34 that this compressor 44 is connected to similarly.
In use, hot water enters cooling tower 10 by managing 23.It distributes along standpipe 24, radial tubes 26 and arm thereof in cooling tower 10, and flows to downwards on the filler 22 via injector 28.Described hot water is downward through filler, and enters memory 30, and it is removed to turn back to its source, such as above-mentioned power station by managing 32 thus.
When water was downward through filler 22, the air of its circumference was located to flow out at the top of tower by the housing 12 of tower 10 thereby air moves up by free convection.Thereby the convection type Natural Circulation of air forms in tower 10, and the top of tower is as the gas outlet, and air enters by circumference or peripheral inlet 18 at the place, bottom of housing 12.Like this, the cold air that enters tower from tower outside is by removing sensible heat and by latent heat is removed and will be downward through by evaporating a part of water the water cooling of filler 22 from water from water.
According to the present invention, the water that enters tower drives turbine 38 via standpipe 24, and turbine 38 drives the compressor 44 of each refrigerating circuit 46 again.Caused the evaporative cooling in the evaporimeter 50 in loop along the cold-producing medium conductance in described loop 46, and condensation and heat radiation in the condenser 48 in loop 46.
The air (referring to Fig. 1) that upwards flows through drift eliminator 34 from the top of filler 22 heats the water that dropped on the filler 22, and will comprise the water vapour of significant proportion.The cooling that is realized by evaporimeter 50 will cause wherein a part of water condensation to the cooling of the air of described rising, drops on the filler 22.This cooling and dry air will will be heated then once more through the condenser 48 in loop 46 when further raising.
Thereby will appreciate that, the use of refrigerating circuit 46 has caused having from the air at tower 10 tops the water loss of reduction, and the heating again of the cool drying air that is undertaken by condenser 48 will be used for promoting the convection type Natural Circulation by the air of tower 10, and will compensate at least in part in this convection loop because 50 pairs of air of devaporizer cool off caused any reduction.In this, will appreciate that each drift eliminator 34 has constituted the parts of relevant refrigerating circuit 46, pipe 54 has constituted the parts of associated evaporators 50 on it.Because evaporation will take place being lower than under the temperature of condensation, therefore between the pipe 54 at the pipe 54 at the place, top of drift eliminator 34 and its place, bottom, will exist temperature difference, and be provided with groove 56 for this reason to reduce the caused direct heat transmission of conduction between the described upper and lower pipe 54.Alternatively, will appreciate that, the thermal insulation of certain other form also can be provided, perhaps in fact, following pipe 54 can be set on the copper sheet that separates with last pipe 54, as drift eliminator.
Substitute and use compression refrigerating system 36, cooling tower 10 can adopt absorbent refrigeration system.In Fig. 5, show the absorption refrigeration circuits 80 that is used for absorbent refrigeration system.Loop 80 comprises the absorber 82 that is connected to heat exchanger 88 by the flowline 84 with pump 86.Fluid passes heat exchanger 88 from pump 86 to be continued to arrive ebullator or the generator 92 that is connected to thermal water source's (not shown) by flowline 94,96 along flowline 90.The solvent return line 98 that is derived from generator 92 reaches absorber 82 through over-heat-exchanger 88.The flow of refrigerant pipeline 100 that is derived from generator 92 extends to condenser 102, evaporimeter 104 and expansion valve 106, and condenser 102 is connected between expansion valve 106 and the generator 92, and evaporimeter 104 is connected in again between expansion valve 106 and the absorber 82.Valve 106 is between condenser 102 and evaporimeter 104.
With reference to Fig. 6 and 7, another embodiment Reference numeral that is used for the drift eliminator of tower 10 is 200.Drift eliminator 200 comprises a pair of attached Face to face copper sheet, and is formed and makes drift eliminator 200 have two groups of pipes 202 that extend along its opposing longitudinal edges, and the profile of drift eliminator 200 is an elongated rectangular.In use, drift eliminator 200 will be arranged such that its long limit like that flatly extends as mentioned above and shown in Fig. 6 and 7, constitute the parts of the condenser 102 of absorption refrigeration circuits 80 as shown in Figure 5 so that manage 202 the group that goes up, and manage 202 following group and constitute the parts of the evaporimeter 104 in loop 80 as shown in Figure 5.Drift eliminator 200 has the ripple 204 of middle heart longitudinal extension so that when a plurality of drift eliminators were packed side by side continuously with intensive relation, their ripple can be inserted in each other.These are being parallel to its surface and are being parallel to flowing thereby interrupted by ripple 204 on the direction of its minor face between remover side by side, and ripple 204 reduces or prevented to be entrained in water droplet process between remover 200 in the fluid, the described ripple 204 of droplets impact its.(in its ripple 204 or next door) can be provided with one or more cannelures 206 in each remover 200, with the pipe 202 disadvantageous direct heat transmission of opposing from the pipe 202 of condenser 102 to evaporimeter 104.
Be contemplated that in use a plurality of absorption refrigeration circuits (such as number is four) will be provided for cooling tower 10, its type is shown among Fig. 5 80.In these loops 80 each will have condenser 102, valve 106 and the evaporimeter 104 that is positioned at tower 10 inboards; And will have the absorber 82, pump 86, heat exchanger 88 and the generator 92 that are positioned at tower 10 outsides.Flowline 100 will extend to from the inboard of tower tower the outside, extend to absorber 82 and generator 92, flowline 84,90 and 98 is positioned the outside of tower 10.Flowline 94,96 extends to the thermal source in tower 10 outsides, following will be in greater detail.The generator 92 in each loop will have the refrigerant outlet (flowline 100) that is connected to multiple drift eliminator, in this object lesson, be connected to 1/4th drift eliminator, be positioned for example in plane, to see 90 ° of quadrants that are in tower 10.The condenser 102 of upward organizing thereby will form described loop 80 of the pipe 202 of the drift eliminator 200 that described generator 92 is connected to.These pipes 202 will be fed into common flowline 100, and will be through relevant expansion valve 106, and cold-producing medium will turn back to absorber 82 via evaporimeter 104 thus.Each group down that evaporimeter 104 comprises pipe 202 in the drift eliminator 200 that this flowline 100 is connected to similarly.
In use, hot water enters cooling tower 10 as described above so that cooled off by air.According to the present invention, external heat source such as the used heat from power station boiler, is used to add hot water to drive absorption refrigeration circuits 80.Thereby the water of heating in each loop 80 flow to generator 92 along flowline 94 (it can be suitable heat insulation pipe (lagged pipe)) under pressure.The suitable refrigerant gas that is dissolved in the suitable solvent with relative high concentration enters generator 92 via flowline 90.Heat from the water of flowline 94 will boil out in the solvent of refrigerant gas from generator 92.Turn back to thermal source along flowline 96 after cooling off in generator 92 from the water of flowline 94.Refrigerant gas flow to condenser 102 (locating it at this is condensed) along flowline 100, by expansion valve 106 and reach evaporimeter 104 (locating it at this is evaporated).Flow along flowline 98 from the solvent that exhausts cold-producing medium of generator 92 and to pass heat exchangers 88, locate it at this and be cooled and it is delivered on the absorber 82 thus.In absorber 82, it is from flowline 100 and evaporimeter 104 absorption refrigeration agent gases.The solvent that comprises again dissolved refrigerant gas flow to heat exchanger 88 (this its be heated) via pump 86 along flowline 84 from absorber 82, and flow to generator 92 via flowline 90 thus.In this, be contemplated that the hot water that flow to generator 92 along flowline 94 will be heated (thermal source comprises the heat ash from power station boiler) usually by thermal source, pass (not shown) such as the suitable heat exchanger in this place, heater coil.Caused the evaporative cooling in the evaporimeter 104 in loop along the cold-producing medium conductance in described loop 80, and condensation and heat radiation in the condenser 102 in loop 80.
The air that upwards flows through drift eliminator 220 from the top of filler 22 heats the water that dropped on the filler 22, and will comprise the water vapour of significant proportion.The cooling that is realized by evaporimeter 104 will cause wherein a part of water condensation to the cooling of the air of described rising, drops on the filler 22.This cooling and dry air will be through the condensers 102 in loop 80 when further raising, and will be heated once more then.
Thereby will appreciate that, the use of refrigerating circuit 80 has caused being accompanied by the water loss that reduces from the air at tower 10 tops, and the heating again of the cool drying air that is undertaken by condenser 102 will be used for promoting the convection type Natural Circulation by the air of tower 10, and will compensate at least in part in this convection loop because 104 pairs of air of devaporizer cool off caused any reduction.In this, will appreciate that each drift eliminator 200 has constituted the parts of relevant refrigerating circuit 80, pipe 202 has constituted the parts of relevant condenser on it, and its following pipe 202 has constituted the parts of associated evaporators.Because evaporation will take place being lower than under the temperature of condensation, therefore between the pipe 202 at the pipe 202 at the place, top of drift eliminator 200 and its place, bottom, will exist temperature difference, and just provide groove 206 for this reason to reduce the caused direct heat transmission of conduction between the described upper and lower pipe 202.Alternatively, will appreciate that, the thermal insulation of certain other form also can be provided, perhaps in fact, following pipe 202 can be arranged on the copper sheet that separates with last pipe 202, as drift eliminator.
The present invention is intended for use in the availability part very in short supply of water, if such as in the thermo-power station that exhausts in the limited and this water supply of water supply then must close.In this, will appreciate that power the entering in the hot water from pipeline 94 that drives loop 80 obtains, and finally must from used heat, obtain from the power station.Yet what believe is, is the key factor part in lack of water, and the present invention can have remarkable use and should be noted that in this present invention need not extra water consumption, remember that flowline 94,96 has constituted the parts of closed water circuit.Power the entering in the hot water from standpipe 24 that drives the compressor 44 in loop 46 obtains, and finally must obtain from this pump that enters water of pumping.Yet if wish, the power of compressor 44 can provide with certain alternate manner, for example by means of being positioned tower 10 outsides easily and being connected to the suitable electro-motor of the gear-box 42 of Fig. 2, or the like.
Although the present invention, the air that promptly cools off the filler top is described with reference to cooling stack with the opposing water loss, will appreciate that, this method can be applicable to forced draught cooling tower in fact equally and therefore the present invention also expands to the there.
(according to the modification of the 19th of treaty)
1. method of operating the vaporation-type cooling stack, described cooling tower has the air that moves upward, and this method comprises:
Contact water with cooling water with air and add hot-air at cooled region;
By means of heated air being cooled off by the evaporative cooling that compression refrigerating system or absorbent refrigeration system provided, and refrigeration system comprises and is arranged in a condenser and an evaporimeter in the loop, evaporimeter be in that low height in the cooling tower is sentenced air that cooling moves upward and by condenser from wherein removing water; And
In the elevation-over of the heated air of cooling, heat with the dry air of condenser, to promote the ventilation in the tower to upwards motion.
2. the method for claim 1, wherein cooling tower has adopted filler, filler has the drift eliminator that is arranged in tower filler top, evaporimeter comprise be positioned among one or more drift eliminators or on one or more coils, and condenser comprises among the one or more drift eliminators that are positioned at the evaporator coil top or on one or more coils.
3. in a kind of cooling stack, its type is for being used for extensive water cooling in the employed water cooling of thermo-power station, and it comprises common concrete hollow housing, described housing on the plane for circular and have and in side outline, be concavity and parabola shaped wall, the bottom of tower raises from ground on pillar etc. thereby the air inlet that extends circumferentially is provided in its lower end, this tower comprises the filler that is positioned at its lower end and is used for moisture to be cooled is fitted on water distribution system on the filler, the memory of water below filler enters tower, and air upwards cycles through filler and goes out with cooling water from the top of tower from air inlet by free convection, a kind of method of operating wherein is provided, it is included in the filler top, the air that moves upward of cooling is with from condensed water wherein, thereby reduce the water loss of tower at the place, top, and in the elevation-over that the air that upwards moves is cooled off, air to upwards motion heats to promote the ventilation in the cooling tower, the cooling of the air that moves upward is by being undertaken by compression refrigerating system or evaporative cooling that absorbent refrigeration system provided, and refrigeration system comprises and is arranged in a condenser and an evaporimeter in the loop, evaporimeter be positioned at that filler top in the tower is cooled off with the air to upwards motion and by condensation with water from wherein removing, and condenser is positioned at dry air that the evaporimeter top moves upward with heating to promote the ventilation in the tower.
4. method as claimed in claim 3, wherein cooling tower has adopted the drift eliminator that is arranged in tower filler top, and the evaporimeter of refrigerating circuit comprise be positioned among one or more drift eliminators or on one or more coils, and the condenser of refrigerating circuit comprises among the one or more drift eliminators that are positioned at the evaporator coil top or on one or more coils.
5. wet cooling tower, it comprises and is used for water is contacted with air with cooling water and the cooled region that adds hot-air, and be used for the heated air from cooled region is cooled off with from the wherein refrigeration or the cooling system of condensed water, refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled compression refrigerating system, and refrigeration system is arranged to cool off the height place of described air and heat cooled air being higher than refrigeration system.
6. cooling tower as claimed in claim 5, wherein refrigeration system comprises one or more cooling circuits, each cooling circuit comprises condenser and evaporimeter.
7. cooling tower as claimed in claim 6, it comprises filler and drift eliminator, each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
8. as claim 6 or 7 described cooling towers, wherein each cooling circuit comprises by turbine drives and alternatively via the compressor of gear-box, and turbine is driven by the current to be cooled that enter cooling tower, gear-box if any words then between turbine and compressor.
9. wet cooling tower, it comprises and is used for water is contacted with air with cooling water and the cooled region that adds hot-air, and be used for the heated air from cooled region is cooled off with from the wherein refrigeration or the cooling system of condensed water, refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled absorbent refrigeration system, and refrigeration system is arranged to cool off the height place of described air and heat cooled air being higher than refrigeration system.
10. cooling tower as claimed in claim 9, wherein refrigeration system comprises one or more cooling circuits, each comprises generator, condenser and evaporimeter, and the generator in each loop is positioned at the cooling tower outside.
11. as claim 9 or 10 described cooling towers, it comprises filler and drift eliminator, each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
12. cooling stack, its type is for being used for extensive water cooling in the employed water cooling of thermo-power station, and it comprises common concrete hollow housing, described housing on the plane for circular and have and in side outline, be concavity and parabola shaped wall, the bottom of tower raises from ground on pillar etc. thereby the air inlet that extends circumferentially is provided in its lower end, and this tower comprises the filler that is positioned at its lower end and is used for moisture to be cooled is fitted on water distribution system on the filler, the memory of water below filler enters tower, and air upwards cycles through filler and goes out with cooling water from the top of tower from air inlet by free convection, this cooling tower also comprises and is used for above the tower filler refrigeration system that the air to upwards motion cools off, with from condensed water wherein.
13. cooling tower as claimed in claim 12, wherein refrigeration system is to be used for by means of cold-producing medium the air of upwards motion being carried out transpiration-cooled compression refrigerating system, and refrigeration system is arranged to cool off the height place of described air the air that moves upward that has been cooled is heated being higher than refrigeration system.
14. cooling tower as claimed in claim 13, wherein refrigeration system comprises one or more cooling circuits, and each comprises condenser and evaporimeter.
15. cooling tower as claimed in claim 14, wherein each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
16. cooling tower as claimed in claim 15, wherein each cooling circuit comprises by turbine drives and alternatively via the compressor of gear-box, and turbine is driven by the current to be cooled that enter cooling tower, gear-box if any words then between turbine and compressor.
17. cooling tower as claimed in claim 12, wherein refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled absorbent refrigeration system, and refrigeration system is arranged to cool off the height place of described air the air that moves upward that has been cooled is heated being higher than refrigeration system.
18. cooling tower as claimed in claim 17, wherein refrigeration system comprises one or more cooling circuits, and each comprises generator, condenser and evaporimeter, and the generator in each loop is positioned at the cooling tower outside.
19. cooling tower as claimed in claim 18, wherein each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
Claims (27)
1. method of operating wet cooling tower, it comprises:
Contact water with cooling water with air and add hot-air at cooled region; With
Will be heated the air cooling with from condensed water wherein, thereby reduce the water loss of cooling tower.
2. the method for claim 1, wherein the cooling of heated air is carried out by means of the evaporative cooling of adopting cold-producing medium.
3. method as claimed in claim 2, wherein the evaporative cooling of heated air is provided by compression refrigerating system.
4. method as claimed in claim 2, wherein the evaporative cooling of heated air is provided by absorbent refrigeration system.
5. arbitrary described method in the claim as described above, wherein wet cooling tower is the cooling stack with the air that moves upward, the cooling of heated air is carried out in its certain height or level place, this method comprises, in the cooling elevation-over of heated air, the air that heating moves upward is to promote the ventilation in the cooling tower.
6. method as claimed in claim 5, wherein the evaporative cooling of heated air is provided by compression refrigerating system or absorbent refrigeration system, and refrigeration system comprises and is arranged in a condenser and an evaporimeter in the loop, this evaporimeter be in air that height lower in the cooling tower moves upward with cooling and by condensation from wherein removing water, and condenser is positioned the dry air that the evaporimeter top moves upward with heating, to promote the ventilation in the tower.
7. method as claimed in claim 6, wherein cooling tower has adopted filler, filler has the drift eliminator that is arranged in tower filler top, evaporimeter comprise be positioned among one or more drift eliminators or on one or more coils and condenser comprises among the one or more drift eliminators that are positioned at the evaporator coil top or on one or more coils.
8. in a kind of cooling stack, its type is for being used for extensive water cooling in the employed water cooling of thermo-power station, and it comprises common concrete hollow housing, described housing on the plane for circular and have and in side outline, be concavity and parabola shaped wall, thereby the bottom of tower raises from ground on pillar etc. and provides the air inlet that extends circumferentially and this tower to be included in the filler of its lower end in its lower end and be used for moisture to be cooled is fitted on water distribution system on the filler, the memory of water below filler enters tower, and air upwards cycles through filler and goes out with cooling water from the top of tower from air inlet by free convection, a kind of method of operating wherein is provided, it is included in air that filler top cooling moves upward with from condensed water wherein, thereby reduces the water loss of tower at the place, top.
9. method as claimed in claim 8, it comprises that the elevation-over in that the air to upwards motion cools off heats to promote the ventilation in the cooling tower the air that upwards moves.
10. method as claimed in claim 9, the cooling of the air that wherein moves upward is by being undertaken by compression refrigerating system or evaporative cooling that absorbent refrigeration system provided, and refrigeration system comprises and is arranged in a condenser and an evaporimeter in the loop, evaporimeter be positioned in the tower filler top with last air to motion is cooled off and by condensation with water from wherein removing, and condenser is positioned at dry air that the evaporimeter top moves upward with heating to promote the ventilation in the tower.
11. method as claimed in claim 10, wherein cooling tower has adopted the drift eliminator that is arranged in tower filler top, and the evaporimeter of refrigerating circuit comprise be positioned among one or more drift eliminators or on one or more coils, and the condenser of refrigerating circuit comprises among the one or more drift eliminators that are positioned at the evaporator coil top or on one or more coils.
12. a wet cooling tower, it comprises and is used for water is contacted with air with cooling water and add the cooled region of hot-air, and is used for the heated air from cooled region is cooled off with from the wherein refrigeration or the cooling system of condensed water.
13. cooling tower as claimed in claim 12, wherein refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled compression refrigerating system, and refrigeration system is arranged to cool off the height place of described air and heat cooled air being higher than refrigeration system.
14. cooling tower as claimed in claim 13, wherein refrigeration system comprises one or more cooling circuits, and each cooling circuit comprises condenser and evaporimeter.
15. cooling tower as claimed in claim 14, it comprises filler and drift eliminator, each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
16. as claim 14 or 15 described cooling towers, wherein each cooling circuit comprises by turbine drives and alternatively via the compressor of gear-box, and turbine is driven by the current to be cooled that enter cooling tower, gear-box if any words then between turbine and compressor.
17. cooling tower as claimed in claim 12, wherein refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled absorbent refrigeration system, and refrigeration system is arranged to cool off the height place of described air and heat cooled air being higher than refrigeration system.
18. cooling tower as claimed in claim 17, wherein refrigeration system comprises one or more cooling circuits, and each comprises generator, condenser and evaporimeter, and the generator in each loop can be positioned at the cooling tower outside.
19. as claim 17 or 18 described cooling towers, it comprises filler and drift eliminator, each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
20. cooling stack, its type is for being used for extensive water cooling in the employed water cooling of thermo-power station, and it comprises common concrete hollow housing, described housing on the plane for circular and have and in side outline, be concavity and parabola shaped wall, thereby the bottom of tower raises from ground on pillar etc. and provides the air inlet that extends circumferentially and this tower to comprise the filler that is positioned at its lower end in its lower end and be used for moisture to be cooled is fitted on water distribution system on the filler, the memory of water below filler enters tower, and air upwards cycles through filler and goes out with cooling water from the top of tower from air inlet by free convection, this cooling tower also comprises and is used for above the tower filler refrigeration system that the air to upwards motion cools off, with from condensed water wherein.
21. cooling tower as claimed in claim 20, wherein refrigeration system is to be used for by means of cold-producing medium the air of upwards motion being carried out transpiration-cooled compression refrigerating system, and refrigeration system is arranged to cool off the height place of described air the air that moves upward that has been cooled is heated being higher than refrigeration system.
22. cooling tower as claimed in claim 21, wherein refrigeration system comprises one or more cooling circuits, and each comprises condenser and evaporimeter.
23. cooling tower as claimed in claim 22, wherein each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
24. cooling tower as claimed in claim 23, wherein each cooling circuit comprises by turbine drives and alternatively via the compressor of gear-box, and turbine is driven by the current to be cooled that enter cooling tower, gear-box if any words then between turbine and compressor.
25. cooling tower as claimed in claim 20, wherein refrigeration system is to be used for by means of cold-producing medium air being carried out transpiration-cooled absorbent refrigeration system, and refrigeration system is arranged to cool off the height place of described air the air that moves upward that has been cooled is heated being higher than refrigeration system.
26. cooling tower as claimed in claim 25, wherein refrigeration system comprises one or more cooling circuits, and each comprises generator, condenser and evaporimeter, and the generator in each loop can be positioned at the cooling tower outside.
27. cooling tower as claimed in claim 26, wherein each evaporimeter comprise among the one or more drift eliminators that are arranged in tower filler top or on coil, and each condenser comprises among the one or more drift eliminators that are positioned at filler top or on coil, condenser coil is in the height place that is higher than evaporator coil.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200407865 | 2004-09-29 | ||
| ZA2004/7865 | 2004-09-29 | ||
| ZA2004/7866 | 2004-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101065632A true CN101065632A (en) | 2007-10-31 |
Family
ID=38965714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580040673 Pending CN101065632A (en) | 2004-09-29 | 2005-09-28 | Cooling tower |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101065632A (en) |
| ZA (1) | ZA200703397B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079687A (en) * | 2010-03-31 | 2013-05-01 | 合成冷却技术有限公司 | Hot water distribution system and method for a cooling tower |
| CN105333749A (en) * | 2015-11-03 | 2016-02-17 | 华北电力大学 | Efficient cooling system based on auxiliary solar cooling tower |
| CN111023860A (en) * | 2019-12-06 | 2020-04-17 | 东华工程科技股份有限公司 | System and method for cooling circulating water by using waste heat of factory |
-
2005
- 2005-09-28 CN CN 200580040673 patent/CN101065632A/en active Pending
-
2007
- 2007-04-25 ZA ZA200703397A patent/ZA200703397B/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079687A (en) * | 2010-03-31 | 2013-05-01 | 合成冷却技术有限公司 | Hot water distribution system and method for a cooling tower |
| CN103079687B (en) * | 2010-03-31 | 2015-12-16 | 合成冷却技术有限公司 | For hot water dispensing system and the method for cooling tower |
| US9835379B2 (en) | 2010-03-31 | 2017-12-05 | Composite Cooling Solutions, L.P. | Hot water distribution system and method for a cooling tower |
| CN105333749A (en) * | 2015-11-03 | 2016-02-17 | 华北电力大学 | Efficient cooling system based on auxiliary solar cooling tower |
| CN105333749B (en) * | 2015-11-03 | 2017-05-17 | 华北电力大学 | Efficient cooling system based on auxiliary solar cooling tower |
| CN111023860A (en) * | 2019-12-06 | 2020-04-17 | 东华工程科技股份有限公司 | System and method for cooling circulating water by using waste heat of factory |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200703397B (en) | 2007-11-28 |
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Open date: 20071031 |