CN215725263U - Cooling tower for preparing cold water with temperature lower than dew point through negative pressure evaporation - Google Patents
Cooling tower for preparing cold water with temperature lower than dew point through negative pressure evaporation Download PDFInfo
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- CN215725263U CN215725263U CN202121587396.6U CN202121587396U CN215725263U CN 215725263 U CN215725263 U CN 215725263U CN 202121587396 U CN202121587396 U CN 202121587396U CN 215725263 U CN215725263 U CN 215725263U
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- dew point
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Abstract
The utility model discloses a cooling tower for preparing cold water with the temperature lower than the dew point by negative pressure evaporation, which comprises a tower body and a fan (1), wherein the tower body comprises a spraying system (4), a counter-current heat and mass transfer heat exchanger (5) and a water collecting tank (9), the counter-current heat and mass transfer heat exchanger (5) is arranged below the spraying system (4), the water collecting tank (9) is arranged below the counter-current heat and mass transfer heat exchanger (5), and a counter-current air cooler (7) is arranged at an air inlet at the lower part of the tower body. The cold water with the temperature lower than the dew point temperature is generated by the evaporation of water and the mutual cooling of water and air by utilizing the unsaturation of strong negative pressure secondary air, the refrigerating unit can be completely replaced in a proper cold water temperature zone, the investment is less than that of the refrigerating unit, a pressure container is not provided, the operation and the maintenance are simple, and the high efficiency, the energy conservation and the environmental protection are realized.
Description
Technical Field
The utility model belongs to the technical field of air conditioner refrigeration technology and cooling technology, and particularly relates to a device for preparing cold water with the temperature lower than the dew point through negative pressure evaporation.
Background
In the prior art, the evaporative cooling technology utilizes the contact of water and unsaturated wet air to cool the air and the water by the evaporation and heat absorption of the water. The cooling equipment utilizing the evaporative cooling technology has a plurality of forms, the theoretical limit value of the temperature of the cold water prepared by the direct evaporation technology is the wet bulb temperature of the air, the theoretical limit value of the temperature of the cold water prepared by the indirect evaporation technology is the dew point temperature of the air, the air energy is not fully and effectively utilized, the utilization rate of the air energy is low, and the energy is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, fully utilizes air energy, utilizes the unsaturation of strong negative pressure secondary air, prepares cold water with the temperature lower than the dew point temperature by water evaporation and mutual cooling of water and air, breaks through the limitation of the use of the prior evaporation technology, and provides a device for preparing cold water with the temperature lower than the dew point temperature by negative pressure evaporation.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a cooling tower for preparing cold water with the temperature lower than a dew point through negative pressure evaporation comprises a tower body and a fan, wherein the tower body comprises a spraying system, a counter-current heat and mass transfer heat exchanger and a water collecting tank, the counter-current heat and mass transfer heat exchanger is arranged below the spraying system, the water collecting tank is arranged below the counter-current heat and mass transfer heat exchanger, and a counter-current air cooler is arranged at an air inlet at the lower part of the tower body.
Furthermore, the bilateral symmetry of tower body is provided with air cooler against the current.
Furthermore, one side of an air outlet of the countercurrent air cooler is connected with an indirect evaporation vertical heat exchanger.
Furthermore, one side of an air inlet of the countercurrent air cooler is provided with a filtering window.
Furthermore, the upper part of the tower body is communicated with one end of a diversion air duct, and the other end of the diversion air duct is communicated with an air inlet of the fan.
Further, the fan is a centrifugal fan.
Further, the fan is a frequency conversion centrifugal fan.
Furthermore, a water collector is arranged above the spraying system in the tower body.
Further, the counterflow air cooler is a multi-row fin tube bundle air cooler.
Compared with the prior art, the utility model has the beneficial effects that:
1. by increasing the row number of the finned tube bundle air coolers and the indirect evaporation vertical heat exchangers, not only can the air entering the inner cavity of the tower body be precooled, but also the inner cavity can generate strong negative pressure, namely the cold air before entering the countercurrent heat and mass transfer heat exchanger is in the strong negative pressure; therefore, cold water with the temperature lower than the dew point is prepared by the evaporation of water and the mutual cooling of water and air by utilizing the unsaturation of the secondary air with strong negative pressure, and the use limitation of the existing evaporation technology is broken through;
2. the air energy is fully utilized, the utilization rate of the air energy is high, and a large amount of energy can be saved.
3. The system can completely replace a refrigerating unit in a proper cold water temperature region, has less investment than the refrigerating unit, has no pressure container, is simple to operate and maintain, is efficient, saves energy and protects environment.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
in the figure: 1. a fan; 2. a diversion air duct; 3. a water collector; 4. a spray system; 5. a heat and mass transfer heat exchanger; 6. an indirect evaporation vertical heat exchanger; 7. a counter-flow air cooler; 8. a filter window; 9. a water collection tank; 10. a water circulating pump; 11. a circulating water outlet pipe; 12. and a circulating water return pipe.
Detailed Description
The technical solutions of the present invention are described in detail below with reference to the embodiments and the accompanying drawings so that those skilled in the art can more clearly understand the technical solutions of the present invention, but the technical scope of the present invention is not limited thereby.
As shown in fig. 1, a cooling tower for preparing cold water below a dew point temperature by negative pressure evaporation comprises a tower body and a fan 1, wherein the tower body comprises a spraying system 4, a counter-current heat and mass transfer heat exchanger 5 and a water collecting tank 9, the counter-current heat and mass transfer heat exchanger 5 is arranged below the spraying system 4, a water collector 3 is arranged above the spraying system 4, the water collecting tank 9 is arranged below the counter-current heat and mass transfer heat exchanger 5, a tower body inner cavity is formed between the water collecting tank 9 and the counter-current heat and mass transfer heat exchanger 5, and a counter-current air cooler 7 is arranged at an air inlet at the lower part of the tower body; the air cooler 7 symmetry sets up in the both sides of tower body inner chamber against current, air outlet one side of air cooler 7 against current is connected with indirect evaporation vertical heat exchanger 6 and with tower body inner chamber intercommunication, air intake one side of air cooler 7 against current is provided with filtering window 8. The countercurrent air cooler 7 is a multi-row fin tube bundle air cooler.
Preferably, the upper part of the tower body is communicated with one end of a guide air duct 2, and the other end of the guide air duct 2 is communicated with an air inlet of a fan 1; the fan 1 is a centrifugal fan; the fan 1 may also be a variable frequency centrifugal fan. The fan 1 is arranged outside the tower body through the diversion air duct 2, and the effect of the fan is mainly convenient to install and maintain.
The working process of the cooling tower for preparing cold water with the temperature lower than the dew point through negative pressure evaporation is that under the action of a guide air duct 2 at the upper part of a tower body and a centrifugal fan 1, external air exchanges heat with the cold water through fins outside a counter-flow air cooler 7 tube, the air is cooled in an equal humidity manner, the air is divided into two air flows after being cooled, one air flow exchanges heat with the air through fins outside an indirect evaporation vertical heat exchanger tube 6, the temperature is further reduced, and the air flows into the inner cavity of the tower body; the other air flow enters the indirect evaporation vertical heat exchanger tube 6 to carry out evaporation cooling with circulating cold water, and the temperature of the cold water and the air are both reduced. The two air flows are converged in the inner cavity of the tower body, evaporated and cooled in the countercurrent heat and mass transfer heat exchanger 5 together with circulating cold water, and after heat exchange, the air is pumped out of the tower body by the centrifugal fan 1 through the guide air duct 2 and discharged into the atmosphere. A centrifugal fan (the pressure ratio is more than or equal to 2) is selected to overcome the windage resistance of the heat and mass transfer heat exchanger 5, the indirect evaporation vertical heat exchanger 6 and the countercurrent air cooler 7, and strong negative pressure is formed in the tower body. The cold water with the temperature lower than the dew point prepared in the water collecting tank 9 at the bottom of the tower body is conveyed to a user through the circulating water pump 10 and the circulating water outlet pipe 11, wherein one part of the cold water is shunted into the countercurrent air cooler 7 to exchange heat with the external air entering the countercurrent air cooler 7, then the cold water is mixed with the user return water passing through the circulating water return pipe 12 and enters the spraying system 4 to be uniformly sprayed into the heat and mass transfer heat exchanger 5, the cold water is evaporated and cooled in the countercurrent heat and mass transfer heat exchanger 5 and then enters the inner cavity of the tower body, the cold water is evaporated and cooled under strong negative pressure with the secondary cold air which is subjected to heat exchange in sequence by the countercurrent air cooler 7 and the indirect evaporation vertical heat exchanger 6, the cold water after evaporation and cooling is divided into two parts, one part of the cold water directly flows into the water collecting tank 9 at the lower part of the tower body, the other part of the cold water enters the vertical pipe of the indirect evaporation vertical heat exchanger 6 to be subjected to secondary evaporation and heat exchange with the cold air flow which is shunted once through the countercurrent air cooler 7, after heat exchange and cooling, the mixture enters a water collecting tank 9 at the lower part of the tower body to be mixed and is sequentially circulated to provide cold water.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, which is still within the scope of the utility model.
Claims (9)
1. The cooling tower for preparing cold water with the temperature lower than the dew point through negative pressure evaporation comprises a tower body and a fan (1), wherein the tower body comprises a spraying system (4), a counter-current heat and mass transfer heat exchanger (5) and a water collecting tank (9), the counter-current heat and mass transfer heat exchanger (5) is arranged below the spraying system (4), the water collecting tank (9) is arranged below the counter-current heat and mass transfer heat exchanger (5), and the cooling tower is characterized in that: and a countercurrent air cooler (7) is arranged at an air inlet at the lower part of the tower body.
2. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 1, wherein: and countercurrent air coolers (7) are symmetrically arranged on two sides of the tower body.
3. A cooling tower for producing cold water below the dew point by negative pressure evaporation according to claim 1 or 2, wherein: and one side of an air outlet of the countercurrent air cooler (7) is connected with an indirect evaporation vertical heat exchanger (6).
4. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 3, wherein: and a filtering window (8) is arranged on one side of an air inlet of the countercurrent air cooler (7).
5. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 1, wherein: the upper part of the tower body is communicated with one end of the diversion air duct (2), and the other end of the diversion air duct (2) is communicated with an air inlet of the fan (1).
6. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 5, wherein: the fan (1) is a centrifugal fan.
7. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 6, wherein: the fan (1) is a frequency conversion centrifugal fan.
8. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 1, wherein: a water collector (3) is arranged above the spraying system (4) in the tower body.
9. The cooling tower for producing cold water below the dew point temperature by negative pressure evaporation as claimed in claim 1, wherein: the countercurrent air cooler (7) is a multi-row fin tube bundle air cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121587396.6U CN215725263U (en) | 2021-07-13 | 2021-07-13 | Cooling tower for preparing cold water with temperature lower than dew point through negative pressure evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121587396.6U CN215725263U (en) | 2021-07-13 | 2021-07-13 | Cooling tower for preparing cold water with temperature lower than dew point through negative pressure evaporation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215725263U true CN215725263U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121587396.6U Active CN215725263U (en) | 2021-07-13 | 2021-07-13 | Cooling tower for preparing cold water with temperature lower than dew point through negative pressure evaporation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215725263U (en) |
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2021
- 2021-07-13 CN CN202121587396.6U patent/CN215725263U/en active Active
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