CN112597563A - Cooling tower construction optimization method and system - Google Patents
Cooling tower construction optimization method and system Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 293
- 238000010276 construction Methods 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005457 optimization Methods 0.000 title claims description 18
- 238000004088 simulation Methods 0.000 claims abstract description 41
- 230000008520 organization Effects 0.000 claims abstract description 36
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 238000010835 comparative analysis Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
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- 238000005516 engineering process Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000007405 data analysis Methods 0.000 claims description 4
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- 238000009434 installation Methods 0.000 abstract description 4
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- 238000012545 processing Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005057 refrigeration Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2200/00—Prediction; Simulation; Testing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
Abstract
The invention discloses a method and a system for optimizing the construction of a cooling tower, wherein the method comprises the following steps: optimizing the type selection of the cooling tower, designing a plurality of cooling tower construction schemes based on the optimized type selection of the cooling tower, performing air flow organization simulation on the cooling tower in the plurality of cooling tower construction schemes to obtain cooling tower operation data of the plurality of construction schemes, performing comparative analysis on the cooling tower operation data to determine an optimal cooling tower construction scheme, establishing a three-dimensional BIM construction model based on the optimal cooling tower construction scheme, and guiding the field installation of the cooling tower according to the three-dimensional BIM construction model. Under the condition of ensuring the normal operation of the system, the invention can meet the cooling water quantity requirement of the host machine, improve the operation performance efficiency of the system and avoid the problem of shutdown and dismantling change caused by poor later operation effect by optimizing the type selection and the construction process of the cooling tower.
Description
Technical Field
The invention belongs to the technical field of building electromechanical construction, and particularly relates to a cooling tower construction optimization method and system.
Background
The cooling tower is a device which takes water as a circulating coolant, absorbs heat from a system and discharges the heat to the atmosphere so as to reduce the water temperature, wherein the cold is an evaporation heat dissipation device which utilizes the principles that the water flows and contacts with air to exchange heat to generate steam, the steam volatilizes and takes away the heat to achieve evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like so as to dissipate the waste heat generated in the industry or in a refrigeration air conditioner to reduce the water temperature, thereby ensuring the normal operation of the system. However, the construction technology of the existing cooling tower does not fully consider the complex environment of the site, and the cooling tower in the building is often limited in placement space, high in power consumption of equipment and high in exhaust backflow, so that the operation energy efficiency of the cooling tower is affected. Therefore, the selection of the cooling tower and the construction process need to be optimized according to actual conditions.
Disclosure of Invention
The invention aims to provide a cooling tower construction optimization method and a cooling tower construction optimization system, which aim to solve the problems that the arrangement space of a cooling tower is limited, a louver and a perforated plate are blocked outside an outdoor side, a building body is blocked inside an indoor side, the cooling tower runs to output air and flow back, ventilation and heat dissipation are not ideal, power consumption is high, and the running of the cooling tower is influenced.
In order to achieve the purpose, the invention provides a cooling tower construction optimization method, which comprises the following steps:
optimizing the type selection of the cooling tower by considering the field environment factors;
designing a plurality of cooling tower construction schemes based on the optimized cooling tower model selection;
performing air flow organization simulation on the cooling towers in the multiple cooling tower construction schemes to obtain the cooling tower operation data of the multiple construction schemes;
carrying out comparative analysis on the operation data of the cooling tower to determine an optimal construction scheme of the cooling tower;
establishing a three-dimensional BIM construction model based on the optimal cooling tower construction scheme;
and guiding the cooling tower to be installed on site according to the three-dimensional BIM construction model.
According to one embodiment of the present invention, optimizing cooling tower sizing in view of field environmental factors includes:
determining the size of the cooling tower according to the site construction environment, the placing space and the cooling tower model selection specification;
and optimizing the water inlet and outlet temperature of the cooling tower and the power consumption of the cooling tower to obtain the optimized type selection of the cooling tower.
According to one embodiment of the invention, the optimized cooling tower has a power of 45KW and a temperature of 35.5/30.5 ℃ of inlet and outlet water.
According to one embodiment of the present invention, the plurality of cooling tower construction schemes include a first construction scheme, a second construction scheme, and a third construction scheme; the first construction scheme comprises the steps that the optimized cooling tower is arranged according to the original design scheme, and the optimized cooling tower is subjected to air inlet and heat dissipation by means of the bottom frame structure space; the second construction scheme comprises that the cooling tower is lifted to 2m of the frame structure on the basis of the first construction scheme; the third construction scheme comprises adding a partition plate and an air duct to the bottom frame of the cooling tower based on the second construction scheme.
According to an embodiment of the present invention, the performing an airflow organization simulation on a cooling tower in a plurality of cooling tower construction schemes to obtain cooling tower operation data of the plurality of construction schemes includes: and (3) respectively carrying out air flow organization simulation on the cooling tower in each construction scheme by adopting a CFD (computational fluid dynamics) technology to obtain the operation data of the cooling tower in each construction scheme.
According to one embodiment of the invention, the operational data includes average heat rejection and treated water content of the cooling tower.
According to an embodiment of the present invention, the airflow structure simulation of the cooling tower in each construction scheme under a plurality of airflow conditions specifically comprises:
under the windless condition, carrying out airflow organization simulation on the cooling tower in each construction scheme;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is southeast and eastern and the airflow speed is 0.5 m/s;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is southeast and eastern and the airflow speed is 2.7 m/s;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is northeast and the airflow speed is 0.5 m/s;
and carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is northeast and the airflow speed is 2.9 m/s.
According to an embodiment of the present invention, the comparing and analyzing the operation data of the cooling tower to determine the optimal construction scheme of the cooling tower comprises: comparing and analyzing the operation data of the cooling tower under different air flow conditions in each construction scheme to obtain the optimal operation data of the cooling tower; and determining an optimal cooling tower construction scheme corresponding to the optimal operation data according to the optimal operation data.
According to an embodiment of the present invention, the comparing and analyzing the operation data of the cooling tower under different air flow conditions in each construction scheme to obtain the optimal operation data of the cooling tower comprises: and comparing the numerical value of the operation data of the cooling tower in each construction scheme under different airflow conditions with a preset numerical value, meeting the water quantity requirement of the cooling tower when the measured operation data numerical value is greater than or equal to the preset numerical value, and comparing the operation data meeting the cooling water quantity requirement to obtain optimal operation data.
The invention also provides a cooling tower construction optimization system, which comprises:
the cooling tower model selection optimizing module is used for optimizing the cooling tower model selection according to field environment factors;
the construction scheme design module is used for designing a plurality of cooling tower construction schemes according to the optimized cooling tower model selection;
the airflow organization simulation module is used for performing airflow organization simulation on the cooling towers in the multiple cooling tower construction schemes to obtain the cooling tower operation data of the multiple construction schemes;
the data analysis module is used for carrying out comparative analysis on the operation data of the cooling tower and determining an optimal construction scheme of the cooling tower;
and the BIM modeling module is used for establishing a three-dimensional BIM construction model according to the optimal cooling tower construction scheme.
Compared with the prior art, the invention has the following beneficial effects: the cooling tower is optimized and selected in consideration of the construction environment of the site and the energy-saving concept, so that the power consumption of the equipment is reduced. A plurality of cooling tower construction schemes are designed, CFD airflow organization simulation technology is adopted for evaluation and analysis, an optimal construction scheme is sought, and BIM technology is utilized for modeling the optimal construction scheme to guide the construction of the cooling tower process. The method has simple construction process, can meet the cooling water quantity requirement of the main machine and improve the operation efficiency of the system by the selection of the cooling tower and the optimization of the construction process under the condition of ensuring the normal operation of the whole system, and can avoid the problem of shutdown disassembly and modification caused by the need of replacing the tower due to poor operation effect in the later period.
Drawings
Fig. 1 is a flowchart of a method for optimizing the construction of a cooling tower according to an embodiment of the present invention.
FIG. 2 is a flow chart of a method for optimizing cooling tower sizing according to an embodiment of the present invention.
FIG. 3 is a flow chart of a method for determining an optimal cooling tower construction scheme according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a cooling tower construction optimization system according to an embodiment of the present invention.
FIG. 5 is a graph illustrating a distribution of cooling tower process water for each airflow condition according to a first embodiment of the present invention.
FIG. 6 is a graph illustrating water treatment distribution for a cooling tower under various airflow conditions according to a second embodiment of the present invention.
FIG. 7 is a graph illustrating the distribution of water treatment in a cooling tower under various airflow conditions according to a third embodiment of the present invention.
FIG. 8 is a graph illustrating an average heat loss distribution of a cooling tower according to various embodiments of the present invention.
Detailed Description
The present invention is described in detail below with reference to specific embodiments in order to make the concept and idea of the present invention more clearly understood by those skilled in the art. It is to be understood that the embodiments presented herein are only a few of all embodiments that the present invention may have. Those skilled in the art who review this disclosure will readily appreciate that many modifications, variations, or alterations to the described embodiments, either in whole or in part, are possible and within the scope of the invention as claimed.
As used herein, the terms "first," "second," and the like are not intended to imply any order, quantity, or importance, but rather are used to distinguish one element from another. As used herein, the terms "a," "an," and other similar terms are not intended to mean that there is only one of the things, but rather that the pertinent description is directed to only one of the things, which may have one or more. As used herein, the terms "comprises," "comprising," and other similar words are intended to refer to logical interrelationships, and are not to be construed as referring to spatial structural relationships. For example, "a includes B" is intended to mean that logically B belongs to a, and not that spatially B is located inside a. Furthermore, the terms "comprising," "including," and other similar words are to be construed as open-ended, rather than closed-ended. For example, "a includes B" is intended to mean that B belongs to a, but B does not necessarily constitute all of a, and a may also include C, D, E and other elements.
The terms "embodiment," "present embodiment," "an embodiment," "one embodiment," and "one embodiment" herein do not mean that the pertinent description applies to only one particular embodiment, but rather that the description may apply to yet another embodiment or embodiments. Those skilled in the art will appreciate that any descriptions made in relation to one embodiment may be substituted, combined, or otherwise combined with the descriptions in relation to another embodiment or embodiments, and that the substitution, combination, or otherwise combination of the new embodiments as produced herein may occur to those skilled in the art and are intended to be within the scope of the present invention.
Example 1
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention. With reference to fig. 1 to 8, a method for optimizing the construction of a cooling tower provided by the embodiment of the present invention includes the following steps:
s1: and optimizing the type selection of the cooling tower by considering the field environment factors.
S2: and designing a plurality of cooling tower construction schemes based on the optimized cooling tower model selection.
S3: and performing air flow organization simulation on the cooling towers in the multiple cooling tower construction schemes to obtain the cooling tower operation data of the multiple construction schemes.
S4: and comparing and analyzing the operation data of the cooling tower to determine the optimal construction scheme of the cooling tower.
S5: and establishing a three-dimensional BIM construction model based on the optimal cooling tower construction scheme.
S6: and guiding the cooling tower to be installed on site according to the three-dimensional BIM construction model.
Specifically, the step S1 of optimizing the cooling tower model selection in consideration of the field environmental factors further includes:
step S1-1: and determining the size of the cooling tower according to the site construction environment, the placing space and the cooling tower model selection standard.
Step S1-2: and optimizing the water inlet and outlet temperature of the cooling tower and the power consumption of the cooling tower to obtain the optimized type selection of the cooling tower.
Because the placing space of the cooling tower is limited in the field environment, the outdoor side is blocked by the louver and the perforated plate, the indoor side is blocked by the building body, hot air flows back and is influenced by the field air flow, the model selection of the cooling tower needs to be optimized, the complex environment of the field is fully considered, the normal operation of the cooling tower is ensured and the energy-saving requirement is met, the size of the cooling tower is determined according to the requirements of the field construction environment, the placing space and the model selection specification of the cooling tower, the model selection of the cooling tower needs to be at least 2.3 m away from the solid wall, 1 m away from the louver wall and 1.2m in the height of the foundation, the average heat dissipation loss and the processing water quantity of the cooling tower are evaluated through CFD air flow organization simulation (simulating the operation of all equipment and under the hottest environment), the average heat dissipation loss is found to be higher, the explanation that the heat dissipation effect is poor and the processing water quantity is less than 690, the requirement of a host is not met, the power of a motor of the cooling tower is 55KW, the temperature of inlet and outlet water is 37/32 ℃, and the power consumption is high, so that the temperature of the inlet and outlet water of the cooling tower and the power consumption of the cooling tower need to be optimized. According to the embodiment of the invention, the power of the motor of the cooling tower is finally reduced to 45KW from the original 55KW, the temperature of the inlet water and the outlet water of the cooling tower is optimized to 35.5/30.5 ℃ from the original 37/32 ℃, the requirements of the type selection specification of the cooling tower are just met by combining the field environment, the placing space is met, the optimized type selection of the cooling tower can well reduce the water temperature, the operation effect of the cooling tower is good, the power consumption is greatly reduced, the power consumption of equipment is favorably reduced, and the operation energy efficiency of the system is improved.
Specifically, in the step S2, based on the type selection of the cooling tower, a plurality of cooling tower construction schemes are designed, because the space for placing the cooling tower is limited in the field environment, the louver and the perforated plate are blocked on the outdoor side, the building body is blocked on the indoor side, and the air outlet flows back, so that the cooling capacity is reduced to a certain extent. Therefore, the construction scheme of the cooling tower needs to be optimized, the embodiment of the invention respectively adopts a first construction scheme, a second construction scheme and a third construction scheme to optimize the construction of the cooling tower, the first construction scheme is to arrange the cooling tower according to the original design scheme after the optimization and the type selection of the cooling tower, and the cooling tower is subjected to air inlet and heat dissipation by depending on the space of a bottom frame structure; the second construction scheme is to raise the cooling tower to 2m of the frame structure on the basis of the first construction scheme. And the third construction scheme is that on the basis of the second construction scheme, a partition plate and an air duct are additionally arranged on the bottom frame of the cooling tower.
Specifically, step S3 uses a CFD technique to perform airflow organization simulation on the cooling towers in the three construction schemes under multiple airflow conditions, respectively, to obtain operation data of the cooling towers in the three construction schemes under multiple airflow conditions. Wherein the operational data includes average heat rejection and treated water content of the cooling tower. The embodiment of the invention respectively performs airflow organization simulation on the cooling tower in three construction schemes under 5 airflow conditions, and is used for evaluating 5 wind directions and corresponding airflow speeds, and the method comprises the following steps: no wind, ventilation, heat dissipation and cooling water amount under the conditions of southeast and southeast (ESE, 0.5 m/s), southeast and southeast (ESE, 2.7 m/s), northeast (ENE, 0.5 m/s) and northeast (ENE, 2.9 m/s). The method specifically comprises the following steps:
under the windless condition, carrying out airflow organization simulation on the cooling tower in each construction scheme;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is southeast and eastern and the airflow speed is 0.5 m/s;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is southeast and eastern and the airflow speed is 2.7 m/s;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is northeast and the airflow speed is 0.5 m/s;
and carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is northeast and the airflow speed is 2.9 m/s.
Specifically, the step S4 of performing comparative analysis on the cooling tower operation data to determine the optimal cooling tower construction scheme specifically includes:
step S4-1: and comparing and analyzing the operation data of the cooling tower under different air flow conditions in each construction scheme to obtain the optimal operation data of the cooling tower. In the step, the numerical value of the operation data of the cooling tower in each construction scheme measured under different airflow conditions is compared with a preset numerical value, when the measured operation data numerical value is greater than or equal to the preset numerical value, the requirement of the cooling water amount is met, and the operation data meeting the requirement of the cooling water amount are compared to obtain the optimal operation data.
Step S4-2: and determining an optimal cooling tower construction scheme corresponding to the optimal operation data according to the optimal operation data.
After CFD airflow structure simulation, the ventilation and heat dissipation conditions and the cooling capacity of the cooling tower are reflected by comparing and analyzing the data of the average heat dissipation loss and the treated water amount of the three construction schemes. After data analysis, the optimal construction scheme can be obtained under the condition that normal operation of the cooling tower is guaranteed. The optimal scheme of the embodiment of the invention is a third construction scheme, namely that the power of a motor of the cooling tower is 45KW, the temperature of inlet and outlet water is 35.5/30.5 ℃, the equipment is lifted to a frame structure by 2m, and a partition plate and an air guide cylinder are added.
Specifically, step S5 is to establish a three-dimensional BIM construction model based on the optimal cooling tower construction scheme, and establish the three-dimensional construction model of the cooling tower through the BIM technique to guide the site construction.
Specifically, step S6 is to guide the on-site installation of the cooling tower according to the three-dimensional BIM construction model, and after the on-site infrastructure structure is completed and the cooling tower is qualified by on-site acceptance, guide the installation of the cooling tower by using the three-dimensional BIM construction model.
Example 2
The embodiment of the invention also provides a cooling tower construction optimization system, which comprises:
and the cooling tower model selection optimizing module 1 is used for optimizing the cooling tower model selection according to field environment factors.
And the construction scheme design module 2 is used for designing a plurality of cooling tower construction schemes according to the optimized cooling tower model selection.
And the airflow organization simulation module 3 is used for performing airflow organization simulation on the cooling towers in the multiple cooling tower construction schemes to obtain the cooling tower operation data of the multiple construction schemes.
And the data analysis module 4 is used for carrying out comparative analysis on the operation data of the cooling tower and determining an optimal construction scheme of the cooling tower.
And the BIM modeling module 5 is used for establishing a three-dimensional BIM construction model according to the optimal cooling tower construction scheme.
Example 3
The working process proposed by the present invention is explained in detail below with a specific embodiment. It should be noted that this embodiment is described as a specific embodiment, and the specific implementation is not limited to this.
In the embodiment of the invention, 12 cooling towers are arranged and are numbered, the 12 cooling towers are limited in arrangement space, the cooling towers are blocked by a louver and a perforated plate on the outdoor side and blocked by a building body on the indoor side, exhaust air reflows to increase the power consumption of equipment, and in order to improve the operation energy efficiency of a system, the embodiment of the invention optimizes and selects the 12 cooling towers by fully considering the site construction environment and the energy-saving requirement of the cooling towers, reduces the motor power of the cooling towers from the original 55KW to 45KW, and optimizes the temperature of inlet water and outlet water of the cooling towers from the original 37/32 ℃ to 35.5/30.5 ℃, thereby greatly reducing the power consumption of the equipment. On the basis, the embodiment of the invention designs three cooling tower construction schemes, evaluates the three cooling tower construction schemes by adopting a CFD airflow structure simulation technology, evaluates the ventilation and heat dissipation conditions and the cooling capacity of the cooling tower in the three construction schemes by comparing and analyzing the average heat loss and the treated water amount of the cooling tower in the three construction schemes, determines an optimal construction scheme on the premise of ensuring the normal operation of the whole system, and finally models the determined optimal construction scheme by utilizing a BIM technology for guiding the field construction of the cooling tower. The three cooling tower construction schemes and the corresponding evaluation processes designed by the embodiment of the invention are as follows:
the first scheme is as follows:
after the optimized selection of the cooling tower is determined, the optimized motor power of the cooling tower is 45KW, the temperature of inlet and outlet water is 35.5/30.5 ℃, 12 cooling towers are arranged according to the original design scheme, each cooling tower is labeled, and each cooling tower is subjected to air inlet and heat dissipation by depending on the space of a frame structure at the bottom. According to the embodiment of the invention, a CFD airflow organization simulation technology is adopted to simulate and evaluate the cooling tower construction scheme of the first scheme under 5 airflow conditions, wherein the 5 airflow conditions comprise 5 wind directions and corresponding airflow speeds, and specifically comprise no wind, southeast and southeast (ESE, 0.5 m/s), southeast and southeast (ESE, 2.7 m/s), northeast (ENE, 0.5 m/s) and northeast (ENE, 2.9 m/s), the evaluation result is shown in FIG. 3 and FIG. 6, the cooling capacity of each cooling tower is 512-553 m/h under the no wind condition, and the cooling capacity of each cooling tower is 602 m/h under the conditions that the wind direction is 553-553 and the airflow speed is 0.5 m/s; under the conditions that the wind direction is southeast and east (ESE) and the air flow speed is 2.7 m/s, the cooling capacity of each cooling tower is 578 and 635 m/h; under the conditions that the wind direction is northeast (ENE) and the air flow speed is 0.5 m/s, the cooling capacity of each cooling tower is 553 year 619 m; under the conditions that the wind direction is northeast (ENE) and the air flow speed is 2.9 m/s, the cooling capacity of each cooling tower is 594 and 635 m/h. The average heat dissipation loss of the first calculation scheme is 29.47%, the handling capacity of each tower type under various external airflow conditions is less than 635 m/h, and the cooling water requirement of a main machine cannot be met.
Scheme II:
secondly, on the basis of the first scheme, the equipment foundation is raised to 2m from 1.2m to obtain fresh air with larger area contact, the CFD airflow structure simulation technology is adopted to simulate and evaluate the cooling tower construction scheme of the second scheme under the condition of 5 airflow, the evaluation result is shown in fig. 4 and 6, under the windless condition, the cooling capacity of each cooling tower is 612 and 655 m and can be lifted and erected/h, and under the conditions that the wind direction is southeast and southeast east (ESE) and the airflow speed is 0.5 m/s, the cooling capacity of each cooling tower is 647 and 698 m and can be erected/h; under the conditions that the wind direction is southeast and east (ESE) and the air flow speed is 2.7 m/s, the cooling capacity of each cooling tower is 672 and 733 m and/h, and under the conditions that the wind direction is northeast and east (ENE) and the air flow speed is 0.5 m/s, the cooling capacity of each cooling tower is 638 and 707 m; under the conditions that the wind direction is northeast (ENE) and the air flow speed is 2.9 m/s, the cooling capacity of each cooling tower is 690-. The average heat dissipation loss of the second scheme is calculated to be 22.31%, the scheme cannot meet the cooling water quantity requirement of the main machine under the windless working condition, and partial cooling towers can meet the cooling water quantity requirement of the main machine under other air flow conditions.
The third scheme is as follows:
the third scheme is that a partition plate and an air duct are added above the cooling tower on the basis of the second scheme for improving ventilation and heat dissipation capacity and preventing air outlet backflow, the CFD air flow organization simulation technology is adopted to simulate and evaluate the cooling tower construction scheme of the third scheme under 5 air flow conditions, the evaluation result is shown in fig. 5 and fig. 6, under the windless condition, the cooling capacity of each cooling tower is 690 and 724 m and the cooling capacity of each cooling tower is 733 and 759 m and the air flow rate is 0.5 m/s in the southeast east (ESE); under the conditions of southeast east of east China (ESE) and the air flow speed of 2.7 m/s, the cooling capacity of each cooling tower is 750 and 784 m for cultivation/h; carrying out the undersea cultivation at 759 m/h under the conditions of air flow speed of 0.5 m/s in the northeast of the east of China (ENE); under the conditions of northeast (ENE) and the air flow rate of 2.9 m/s, the cooling capacity of each cooling tower is 767 and 793 m for cultivation/h. Through calculation scheme three, the average heat dissipation loss is 12.93%, and the minimum processing capacity under various external airflow conditions is 690 m cultivation/h, so that the cooling water quantity requirement of the host can be met.
And finally determining the scheme III as the optimal construction scheme of the cooling tower by comparing and analyzing the evaluation results of the cooling tower construction schemes of the scheme I, the scheme II and the scheme III, namely that the power of a motor of the cooling tower is 45KW, the temperature of inlet and outlet water is 35.5/30.5 ℃, lifting the equipment to a frame structure for 2m, and adding a partition plate and an air duct above the cooling tower. And after the optimal construction scheme is determined, a BIM technology is adopted to carry out three-dimensional modeling on the cooling tower construction process so as to carry out field installation on the cooling tower.
According to the embodiment of the invention, the model selection optimization of the cooling tower is implemented, the power of the motor of the cooling tower is reduced to 45KW from the original 55KW, the temperature of inlet and outlet water is optimized to 35.5/30.5 ℃ from the original 37/32 ℃, and the power consumption of equipment is greatly reduced. By lifting the equipment foundation to 2m of the frame structure, a larger area is contacted with fresh air. The air guide cylinder and the partition plate are additionally arranged above the cooling tower, so that ventilation and heat dissipation can be facilitated, and air outlet backflow can be prevented. Combine local climatic condition, site conditions and cooling tower and surrounding environment, adopt CFD air current organization simulation technique to assess, at cooling tower motor power 45KW, the business turn over temperature of water is 35.5/30.5 ℃, equipment is raised to frame construction 2m, and average heat dissipation is 12.93% under the condition of increasing baffle and guide duct, and under various external air current conditions, the minimum handling capacity is 690 m and educes the year/h, can satisfy the cooling water demand of host computer.
The concepts, principles and concepts of the invention have been described above in detail in connection with specific embodiments (including examples and illustrations). It will be appreciated by persons skilled in the art that embodiments of the invention are not limited to the specific forms disclosed above, and that many modifications, alterations and equivalents of the steps, methods, apparatus and components described in the above embodiments may be made by those skilled in the art after reading this specification, and that such modifications, alterations and equivalents are to be considered as falling within the scope of the invention. The scope of the invention is only limited by the claims.
Claims (10)
1. The cooling tower construction optimization method is characterized by comprising the following steps:
optimizing the type selection of the cooling tower by considering the field environment factors;
designing a plurality of cooling tower construction schemes based on the optimized cooling tower model selection;
performing air flow organization simulation on the cooling towers in the multiple cooling tower construction schemes to obtain the cooling tower operation data of the multiple construction schemes;
carrying out comparative analysis on the cooling tower operation data to determine an optimal cooling tower construction scheme;
establishing a three-dimensional BIM construction model based on the optimal cooling tower construction scheme;
and guiding the cooling tower to be installed on site according to the three-dimensional BIM construction model.
2. The cooling tower construction optimization method according to claim 1, wherein the optimizing the cooling tower model selection considering field environmental factors comprises:
determining the size of the cooling tower according to the site construction environment, the placing space and the cooling tower model selection specification;
and optimizing the water inlet and outlet temperature of the cooling tower and the power consumption of the cooling tower to obtain the optimized cooling tower model selection.
3. The method for optimizing the construction of the cooling tower as claimed in claim 2, wherein the optimized power of the cooling tower is 45KW and the temperature of inlet and outlet water is 35.5/30.5 ℃.
4. The cooling tower construction optimization method according to claim 1, wherein the plurality of cooling tower construction schemes include a first construction scheme, a second construction scheme, and a third construction scheme;
the first construction scheme comprises the steps that an optimized cooling tower is arranged according to the original design scheme, and the optimized cooling tower is subjected to air inlet and heat dissipation by means of the bottom frame structure space;
the second construction scheme comprises raising the cooling tower to 2m of the frame structure on the basis of the first construction scheme;
the third construction scheme comprises adding a partition plate and an air duct to the bottom frame of the cooling tower based on the second construction scheme.
5. The method of claim 1, wherein the performing an airflow organization simulation on the cooling tower in the plurality of cooling tower construction schemes to obtain the cooling tower operation data of the plurality of construction schemes comprises:
and (3) respectively carrying out air flow organization simulation on the cooling tower in each construction scheme by adopting a CFD (computational fluid dynamics) technology to obtain the operation data of the cooling tower in each construction scheme.
6. The cooling tower construction optimization method according to claim 5, wherein the operation data comprises an average heat loss and a treated water amount of the cooling tower.
7. The cooling tower construction optimization method according to claim 5, wherein the airflow structure simulation is performed on the cooling tower in each construction scheme under a plurality of airflow conditions, and specifically comprises the following steps:
under the windless condition, carrying out airflow organization simulation on the cooling tower in each construction scheme;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is southeast and eastern and the airflow speed is 0.5 m/s;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is southeast and eastern and the airflow speed is 2.7 m/s;
carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is northeast and the airflow speed is 0.5 m/s;
and carrying out airflow organization simulation on the cooling tower in each construction scheme under the conditions that the wind direction is northeast and the airflow speed is 2.9 m/s.
8. The method of claim 1, wherein the comparing the operational data of the cooling tower to determine the optimal cooling tower construction plan comprises:
comparing and analyzing the operation data of the cooling tower under different air flow conditions in each construction scheme to obtain the optimal operation data of the cooling tower;
and determining an optimal cooling tower construction scheme corresponding to the optimal operation data according to the optimal operation data.
9. The method for optimizing the construction of the cooling tower according to claim 8, wherein the comparing and analyzing the operation data of the cooling tower under different air flow conditions in each construction plan to obtain the optimal operation data of the cooling tower comprises:
and comparing the numerical value of the operation data of the cooling tower in each construction scheme under different airflow conditions with a preset numerical value, meeting the requirement of the cooling water amount when the numerical value of the measured operation data is greater than or equal to the preset numerical value, and comparing the operation data meeting the requirement of the cooling water amount to obtain the optimal operation data.
10. A cooling tower construction optimization system, comprising:
the cooling tower model selection optimizing module is used for optimizing the cooling tower model selection according to field environment factors;
the construction scheme design module is used for designing a plurality of cooling tower construction schemes according to the optimized cooling tower model selection;
the airflow organization simulation module is used for performing airflow organization simulation on the cooling towers in the multiple cooling tower construction schemes to obtain the cooling tower operation data of the multiple construction schemes;
the data analysis module is used for carrying out comparative analysis on the cooling tower operation data to determine an optimal cooling tower construction scheme;
and the BIM modeling module is used for establishing a three-dimensional BIM construction model according to the optimal cooling tower construction scheme.
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