CN113158123A - Wet chiller condenser economic back pressure calculation method based on logarithmic mean temperature difference and traversal method - Google Patents
Wet chiller condenser economic back pressure calculation method based on logarithmic mean temperature difference and traversal method Download PDFInfo
- Publication number
- CN113158123A CN113158123A CN202110512390.0A CN202110512390A CN113158123A CN 113158123 A CN113158123 A CN 113158123A CN 202110512390 A CN202110512390 A CN 202110512390A CN 113158123 A CN113158123 A CN 113158123A
- Authority
- CN
- China
- Prior art keywords
- condenser
- back pressure
- cooling water
- calculating
- economic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000004364 calculation method Methods 0.000 title abstract description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 239000008400 supply water Substances 0.000 claims description 6
- 238000009834 vaporization Methods 0.000 claims description 6
- 230000008016 vaporization Effects 0.000 claims description 6
- 230000000704 physical effect Effects 0.000 claims description 4
- 230000003134 recirculating effect Effects 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000004781 supercooling Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Data Mining & Analysis (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Algebra (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A wet cooling unit condenser economic backpressure calculation method based on logarithmic mean temperature difference and a traversal method relates to the field of cold end system economic optimization of thermal power plants. The invention aims to calculate the most economic backpressure of a condenser of a wet cooling unit so as to calculate the energy-saving effect of the most economic backpressure. The invention relates to a method for calculating the economic backpressure of a condenser of a wet cooling unit based on logarithmic mean temperature difference and a traversal method, which comprises the following steps of firstly, establishing a function between the power consumption of a circulating cooling water variable frequency pump and the backpressure of the condenser; and then, based on the function, calculating the back pressure corresponding to the maximum variation of the power supply power of the unit, and taking the back pressure as the most economic back pressure of the condenser.
Description
Technical Field
The invention belongs to the field of economic optimization of cold end systems of thermal power plants.
Background
The working schematic diagram of a condenser and a cooling tower of a wet cooling unit is shown in fig. 1, a circulating cooling water pump drives cooling water, low-pressure cylinder exhaust steam is condensed into water in the condenser to form vacuum, and meanwhile, the circulating cooling water is cooled by air in the cooling tower. The recirculated cooling water pump of present wet cold unit generally is the power frequency pump, and recirculated cooling water pump flow is unchangeable, and the condenser backpressure only changes along with ambient temperature and low cylinder exhaust flow (unit load): the back pressure is reduced along with the reduction of the unit load; the back pressure decreases as the ambient temperature decreases. Therefore, when the ambient temperature is low and the load of the unit is low, the back pressure is far lower than the designed back pressure, the circulating cooling water is excessive, and the back pressure is not necessarily the most economical back pressure.
With the large-scale grid connection of new energy such as wind power, solar energy and the like, the power generation share of the thermal power generating units is reduced year by year, the power generation load of a single thermal power generating unit is lower and lower, the running time of low load is greatly increased, the back pressure economy of the wet cooling unit under the low load is more and more emphasized, the circulating cooling water power frequency pump is transformed into the variable frequency pump, the back pressure is adjusted by adjusting the flow of the water pump, and the higher economy is sought. However, at present, the most economic back pressure of the condenser of the wet cooling unit is rarely researched, and the most economic back pressure of the condenser of the wet cooling unit cannot be obtained.
Disclosure of Invention
The invention provides a method for calculating the economic backpressure of a condenser of a wet cooling unit based on a logarithmic mean temperature difference and a traversal method, which aims to calculate the most economic backpressure of the condenser of the wet cooling unit and calculate the energy-saving effect of the most economic backpressure, and can perform online calculation of the economic backpressure aiming at the degradation of the heat exchange performance of the condenser.
The method for calculating the economic back pressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method specifically comprises the following steps:
determining the supply water temperature T2 of the circulating cooling water based on the logarithmic mean temperature difference and the return water temperature T1 of the circulating cooling water;
determining the flow rate Q of the circulating cooling water according to the heat dissipation Q of the dead steam, the return water temperature T1 of the circulating cooling water and the water supply temperature T2 of the circulating cooling water2；
By using the flow q of the circulating cooling water2Calculating the power consumption W of the circulating cooling water variable frequency pump;
establishing power consumption W of circulating cooling water variable frequency pump and backpressure p of condensercFunction between NQQJL:
W＝NQQJL(q,T1,pc)，
wherein q is the main steam flow;
combining with a function NQQJL, calculating the back pressure p corresponding to the maximum power supply power variation delta N of the unit based on the traversal methodcnAnd applying the back pressure pcnAs the most economical back pressure p of the condenserjj。
Further, as the condenser heat exchange of the wet cooling unit is conservative, the heat exchange capacity of the cold end and the hot end of the condenser is equal to the heat dissipation capacity Q of the exhaust steam, therefore, the heat exchange area A and the heat exchange coefficient alpha of the cold end and the hot end of the condenser are selected, and the supply water temperature T2 of the circulating cooling water can be determined based on the logarithmic mean temperature difference:
wherein, TSFor back pressure p of condensercThe saturated steam temperature of (c).
Further, the specific method for obtaining the heat dissipation Q of the dead steam comprises the following steps:
selecting main steam flow q and condenser back pressure pc，
According to the back pressure p of the condensercObtaining corresponding vaporization latent heat r by looking up a physical property function table of water,
and calculating the heat dissipation capacity Q of the dead steam according to the vaporization latent heat r and the main steam flow Q.
Further, the heat dissipation Q of the exhaust steam is calculated according to the following formula:
Q＝H(q)*r，
where H (q) is the exhaust steam flow rate, which is a function of the main steam flow rate q.
Furthermore, the moisture content of the dead steam and the supercooling degree of the condensed water are neglected in the heat dissipation capacity Q of the dead steam.
Further, the recirculated cooling water flow rate q is determined according to the following formula2：
q2＝Q/(T1-T2)/Cp，
Wherein, CpThe average constant pressure specific heat capacity of the cooling water.
Further, calculating the power consumption W of the circulating cooling water variable frequency pump according to the following formula:
W＝(q2/q0)3*W0，
wherein q is0Design flow for recirculating cooling water pumps, W0And designing power for the circulating cooling water pump.
Further, the back pressure p corresponding to the maximum variation delta N of the power supply power of the computer set based on the traversal methodcnThe specific method comprises the following steps:
setting back pressure pcnThe variation range is [ p ]cmin,pcbj]Wherein p iscminIs the lowest back pressure, p, of the condensercbjThe back pressure is warned for the condenser,
at back pressure pcnRange of variation [ p ]cmin,pcbj]In the method, the power supply power variation delta N of all the units is traversed by taking 0.1kPa as an interval to obtain the maximum delta N value delta NmaxCorresponding back pressure pcn。
Further, the expression of the variation Δ N of the unit power supply power is as follows:
ΔN＝ΔP-[NQQJL(q,T1,pcn)-W0]，
wherein, W0And designing power for the circulating cooling water pump, wherein delta P is the micro-power increase of the steam turbine.
Further, the turbine incremental work Δ P is calculated according to the following formula:
wherein, PeIs made into a machineThe group rated power.
The economic backpressure calculating method of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method can calculate the most economic backpressure of the condenser of the wet cooling unit aiming at the degradation of the heat exchange performance of the condenser, and further facilitates the calculation of the energy-saving effect of the most economic backpressure.
Drawings
FIG. 1 is a schematic view of the condenser and cooling tower of a wet cooling unit;
FIG. 2 is a flow chart of a method for calculating the economic back pressure of a condenser of a wet cooling unit based on the logarithmic mean temperature difference and the traversal method.
Detailed Description
In a power plant, the power supply power N is the difference between the power P of a generator and the power consumption W of a circulating cooling water variable frequency pump and the power consumption M of other equipment, namely:
N＝P-W-M
when analyzing economic backpressure, it is generally assumed that the power consumption of other devices is not affected by backpressure changes, i.e.
Assuming that the unit operates under a certain load, the circulating cooling water variable frequency pump operates at the designed power, and the operating backpressure of the unit is pc0The generating power at the generator end of the unit is P0The power consumption of the circulating cooling water variable frequency pump is W0The power supply power of the unit is N0. Based on the state, the back pressure of the unit is adjusted to p by adjusting the rotating speed of the circulating cooling water variable frequency pumpcIn the process, the power consumption variation of the circulating cooling water variable frequency pump is delta W, the power generation variation at the generator end is delta P, and if:
ΔN＝ΔP-ΔW＝(P-P0)-(W-W0)≥0
the power supply for the whole machine is increased by adjusting the back pressure, so that the process is called the back pressure adjustment benefit process, and in the process, when the back pressure is adjusted to a certain back pressure pc' when, such that:
ΔNmax＝|ΔP-ΔW|max
to measure the back pressure valuepc' for the economic back pressure under the working condition, the generated economic benefit is delta Nmax。
Based on this, in the present embodiment, a function NQQJL is first established for calculating the condenser back pressure p for different main steam flow rates q (unit load) and circulating cooling water return water temperatures T1cAnd the corresponding functional relation with the power consumption W of the circulating cooling water variable frequency pump. And on the basis, a mode of a traversal method is adopted to find the maximum value of the power supply power variation delta N of the unit and the corresponding most economic backpressure p of the condenserjj. The method comprises the following specific steps:
the first embodiment is as follows: specifically describing the present embodiment with reference to fig. 2, the method for calculating the economic back pressure of the condenser of the wet cooling unit based on the log mean temperature difference and the traversal method in the present embodiment specifically includes:
firstly, establishing a condenser mechanism model for calculating the backpressure p of the condenser under the conditions of different main steam flow q (unit load) and circulating cooling water return water temperature T1cAnd the corresponding functional relation with the power consumption W of the circulating cooling water variable frequency pump is as follows:
1) confirming working condition environment, selecting main steam flow q and condenser back pressure pcThe heat exchange area A of the cold end and the hot end of the condenser, the return water temperature T1 of the circulating cooling water and the heat exchange coefficient alpha.
2) According to the back pressure p of the condensercAnd inquiring a physical property function table of the water to obtain corresponding vaporization latent heat r.
3) Calculating the heat dissipation capacity Q of dead steam according to the vaporization latent heat r released during steam condensation and the main steam flow Q:
Q＝H(q)*r，
wherein H (q) is the flow rate of the dead steam and is a function of the flow rate q of the main steam, and the function is a monotone increasing function and is determined by the running characteristic of the unit. The moisture content of the dead steam and the supercooling degree of the condensed water are neglected in the heat dissipation capacity Q of the dead steam.
4) The supply water temperature T2 of the circulating cooling water is determined.
Because the heat transfer of the condenser is conservative, the heat transfer quantity of the cold end and the hot end of the condenser is equal to the heat dissipation quantity Q of the exhaust steam, and therefore, the calculation formula of the heat transfer quantity of the cold end and the hot end of the condenser is as follows:
the supply water temperature T2 of the circulating cooling water can be calculated from the above. In the above formula, TSThe saturated steam temperature, which is the condenser back pressure P, is determined by the physical properties of water.
Based on this, condenser operating condition is stable occasionally:
when the condenser operates, the backpressure and the cooling water flow of the condenser are always in dynamic change, are not always in a stable state, and cannot be directly used for calculating coefficients. Along with the unit operation, the heat transfer performance of condenser degrades gradually, and the product aA of cold and hot end heat transfer area A and heat transfer coefficient alpha of condenser reduces gradually, and economic backpressure can change thereupon. The implementation method can estimate the alpha A in real time on line, synchronously calculate the economic backpressure, and ensure that the economic backpressure can follow the change in time when the heat exchange performance of the condenser is degraded. Therefore, the alpha A is obtained by using the least square method through on-line calculation, so that the influence of the dynamic change of the working state of the condenser on the calculation of the heat exchange performance of the condenser is eliminated. Meanwhile, in order to avoid the data saturation phenomenon and ensure that the alpha A can track the heat exchange performance degradation of the condenser in time, the memory of the old data is gradually eliminated by adopting a gradually eliminated memory recursive least square method.
5) Determining recirculated cooling water flow q2。
Determining the flow rate Q of the circulating cooling water according to the heat dissipation Q of the dead steam, the return water temperature T1 of the circulating cooling water and the water supply temperature T2 of the circulating cooling water2：
q2＝Q/(T1-T2)/Cp，
Wherein, CpThe average constant pressure specific heat capacity of the cooling water.
6) And determining the power consumption W of the circulating cooling water variable frequency pump.
Circulating cooling water frequency conversion pump power consumption W and circulating cooling water flow q2Is proportional to the third power, the power consumption W of the circulating cooling water variable frequency pump is equal to (q)2/q0)3*W0Wherein q is0Design flow for recirculating cooling water pumps, W0And designing power for the circulating cooling water pump.
Based on the steps, the power consumption W of the circulating cooling water variable frequency pump and the back pressure p of the condenser are establishedcFunction between NQQJL:
W＝NQQJL(q,T1,pc)。
at the lowest back pressure p of the condensercminWhen the back pressure increases to pcnAt the moment, the power consumption of the circulating cooling water variable frequency pump is W0Down to W2n＝NQQJL(q,T1,pcn) The power consumption of the circulating cooling water variable frequency pump is increased by delta W ═ W2n-W0。
When the back pressure changes, the micro-work increase of the turbine is estimated, and the back pressure is generally considered to be reduced by 1kPa, and the power generation power of the turbine is increased by 0.8%. Therefore, at the lowest back pressure p of the condensercminOn the basis of (1), increasing back pressure to pcnMicro power increase of steam turbine
Wherein P iseThe rated power of the unit.
Therefore, under the condition of different main steam flow rates q and circulating cooling water return water temperatures T1, the back pressure is controlled from the lowest back pressure p of the condensercminIs raised to pcnThe variation quantity delta N of the power supply power of the unit and the back pressure pcnThe relationship of (a) to (b) is as follows:
then set the back pressure pcnThe variation range is [ p ]cmin,pcbj]，pcbjAnd the back pressure is warned for the condenser. At back pressure pcnRange of variation [ p ]cmin,pcbj]In the method, the variation quantity delta N of the power supply power of all the units is traversed at the interval of 0.1kPa, and the result is shown in Table 1 to obtain the maximum value delta N of the delta NmaxCorresponding back pressure pcnThe back pressure pcnNamely the most economic backpressure p of the condenserjj。
TABLE 1 Back pressure from pcminIs raised to pcnCorresponding Δ N traversal results
Claims (10)
1. The method for calculating the economic back pressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method is characterized by comprising the following steps of:
determining the supply water temperature T2 of the circulating cooling water based on the logarithmic mean temperature difference and the return water temperature T1 of the circulating cooling water;
determining the flow rate Q of the circulating cooling water according to the heat dissipation Q of the dead steam, the return water temperature T1 of the circulating cooling water and the water supply temperature T2 of the circulating cooling water2；
By using the flow q of the circulating cooling water2Calculating the power consumption W of the circulating cooling water variable frequency pump;
establishing power consumption W of circulating cooling water variable frequency pump and backpressure p of condensercFunction between NQQJL:
W＝NQQJL(q,T1,pc)，
wherein q is the main steam flow;
combining with a function NQQJL, calculating the back pressure p corresponding to the maximum power supply power variation delta N of the unit based on the traversal methodcnAnd applying the back pressure pcnAs the most economical back pressure p of the condenserjj。
2. The method for calculating the economic backpressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the history method as claimed in claim 1, wherein the heat exchange capacity of the cold end of the condenser is equal to the heat dissipation capacity Q of the exhaust steam due to the heat exchange conservation of the condenser of the wet cooling unit, so that the heat exchange area A and the heat exchange coefficient alpha of the cold end of the condenser are selected, and the supply water temperature T2 of the circulating cooling water can be determined based on the logarithmic mean temperature difference:
wherein, TSFor back pressure p of condensercThe saturated steam temperature of (c).
3. The method for calculating the economic backpressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method as claimed in claim 1 or 2, wherein the specific method for obtaining the heat dissipation capacity Q of the exhaust steam is as follows:
selecting main steam flow q and condenser back pressure pc，
According to the back pressure p of the condensercObtaining corresponding vaporization latent heat r by looking up a physical property function table of water,
and calculating the heat dissipation capacity Q of the dead steam according to the vaporization latent heat r and the main steam flow Q.
4. The method for calculating the economic backpressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method as claimed in claim 3, wherein the heat dissipation capacity Q of the exhaust steam is calculated according to the following formula:
Q＝H(q)*r，
where H (q) is the exhaust steam flow rate, which is a function of the main steam flow rate q.
5. The method for calculating the economic backpressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the evolutionary method as claimed in claim 4, wherein the moisture content of the exhaust steam and the supercooling degree of the condensed water are neglected in the heat dissipation capacity Q of the exhaust steam.
6. The method for calculating the economic backpressure of a condenser of a wet cooling unit based on the logarithmic mean temperature difference and the traversal method as claimed in claim 1, wherein the flow rate q of the circulating cooling water is determined according to the following formula2：
q2＝Q/(T1-T2)/Cp，
Wherein, CpThe average constant pressure specific heat capacity of the cooling water.
7. The method for calculating the economic backpressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method as claimed in claim 1, wherein the power consumption W of the circulating cooling water variable frequency pump is calculated according to the following formula:
W＝(q2/q0)3*W0，
wherein q is0Design flow for recirculating cooling water pumps, W0And designing power for the circulating cooling water pump.
8. The method for calculating the economic back pressure of the condenser of the wet cooling unit based on the log mean temperature difference and the traversal method as claimed in claim 1, 2, 4, 5, 6 or 7, wherein the back pressure p corresponding to the maximum variation delta N of the power supply power of the unit is calculated based on the traversal methodcnThe specific method comprises the following steps:
setting back pressure pcnThe variation range is [ p ]cmin，pcbj]Wherein p iscminIs the lowest back pressure, p, of the condensercbjThe back pressure is warned for the condenser,
at back pressure pcnRange of variation [ p ]cmin，pcbj]In the method, the power supply power variation delta N of all the units is traversed by taking 0.1kPa as an interval to obtain the maximum delta N value delta NmaxCorresponding back pressure pcn。
9. The method for calculating the economic backpressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method as claimed in claim 8, wherein the expression of the variation quantity delta N of the power supply of the unit is as follows:
ΔN＝ΔP-[NQQJL(q，T1，pcn)-W0]，
wherein, W0And designing power for the circulating cooling water pump, wherein delta P is the micro-power increase of the steam turbine.
10. The method for calculating the economic back pressure of the condenser of the wet cooling unit based on the logarithmic mean temperature difference and the traversal method as claimed in claim 9, wherein the turbine incremental work Δ P is calculated according to the following formula:
wherein, PeThe rated power of the unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512390.0A CN113158123B (en) | 2021-05-11 | 2021-05-11 | Wet cooling unit condenser economic back pressure calculation method based on logarithmic average temperature difference and traversal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512390.0A CN113158123B (en) | 2021-05-11 | 2021-05-11 | Wet cooling unit condenser economic back pressure calculation method based on logarithmic average temperature difference and traversal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113158123A true CN113158123A (en) | 2021-07-23 |
| CN113158123B CN113158123B (en) | 2023-12-29 |
Family
ID=76874564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110512390.0A Active CN113158123B (en) | 2021-05-11 | 2021-05-11 | Wet cooling unit condenser economic back pressure calculation method based on logarithmic average temperature difference and traversal method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113158123B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569748A (en) * | 2014-10-31 | 2016-05-11 | 王砧 | Operation back pressure continuous optimized control method and system for wet cooling steam turbine |
| US20170322609A1 (en) * | 2016-05-04 | 2017-11-09 | Dell Products L.P. | System and method for determining power supply capability |
| CN108613565A (en) * | 2018-03-29 | 2018-10-02 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of calculation of backpressure method of dry and wet joint cooling system |
| CN112052570A (en) * | 2020-08-24 | 2020-12-08 | 杭州电子科技大学 | Economy backpressure optimization method of wet cooling unit of thermal power plant based on wolf algorithm |
| US10942195B1 (en) * | 2020-07-24 | 2021-03-09 | Core Scientific, Inc. | Measuring airflow for computing devices |
-
2021
- 2021-05-11 CN CN202110512390.0A patent/CN113158123B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569748A (en) * | 2014-10-31 | 2016-05-11 | 王砧 | Operation back pressure continuous optimized control method and system for wet cooling steam turbine |
| US20170322609A1 (en) * | 2016-05-04 | 2017-11-09 | Dell Products L.P. | System and method for determining power supply capability |
| CN108613565A (en) * | 2018-03-29 | 2018-10-02 | 中国电建集团河北省电力勘测设计研究院有限公司 | A kind of calculation of backpressure method of dry and wet joint cooling system |
| US10942195B1 (en) * | 2020-07-24 | 2021-03-09 | Core Scientific, Inc. | Measuring airflow for computing devices |
| CN112052570A (en) * | 2020-08-24 | 2020-12-08 | 杭州电子科技大学 | Economy backpressure optimization method of wet cooling unit of thermal power plant based on wolf algorithm |
Non-Patent Citations (1)
| Title |
|---|
| 张贝;马欢;司风琪;白德龙;解冠宇;: "计及集群效应的直接空冷机组经济背压研究", 中国电机工程学报, no. 19, pages 167 - 174 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113158123B (en) | 2023-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103244433B (en) | Power plant's frequency conversion circulating water pump optimizing operation monitoring method | |
| CN109063255B (en) | Energy-saving control method, electronic equipment, storage medium, device and system | |
| CN111058911B (en) | Thermal generator set cold end back pressure real-time control method based on environment wet bulb temperature | |
| CN110966170A (en) | Real-time control method for cold end back pressure of indirect air cooling generator set | |
| CN106839206A (en) | A kind of multi-gang air conditioner and its progress control method | |
| Liu et al. | Experimental research on the property of water source gas engine-driven heat pump system with chilled and hot water in summer | |
| CN108613565A (en) | A kind of calculation of backpressure method of dry and wet joint cooling system | |
| Tian et al. | Experimental investigation on cooling performance and optimal superheat of water source gas engine-driven heat pump system | |
| CN113221274A (en) | Wet chiller condenser economic backpressure calculation method based on logarithmic mean temperature difference and genetic algorithm | |
| CN113404559A (en) | Running method of closed circulating water system of generator set based on environmental parameters | |
| CN104848708A (en) | Air cooling island array control method based on temperature field and velocity field | |
| CN109779891B (en) | Method for optimizing backpressure and circulating water quantity of steam turbine generator unit | |
| CN113158123A (en) | Wet chiller condenser economic back pressure calculation method based on logarithmic mean temperature difference and traversal method | |
| CN207936347U (en) | A kind of solidifying device of information machine room outdoor unit of precision air conditioner | |
| CN107227981B (en) | System and method for cooperatively controlling exhaust back pressure of steam turbine by utilizing LNG cold energy | |
| CN113221272B (en) | Wet cooling unit condenser economic back pressure calculation method based on condenser end difference and traversal method | |
| CN113239538B (en) | Wet cooling unit condenser economic back pressure calculation method based on condenser end difference and genetic algorithm | |
| CN113513746B (en) | Method for determining optimized operation mode of closed circulating water system of thermal power plant | |
| CN110082140B (en) | Quantitative measurement method for energy efficiency of natural ventilation counter-flow wet cooling tower | |
| CN111914389B (en) | Cold end system operating point determining method based on curve fitting | |
| CN206478790U (en) | A kind of multi-gang air conditioner | |
| CN113686170B (en) | Cold end follow-up tracking adjustment method and system for short-period steam turbine | |
| CN107179788B (en) | A kind of control method of the classification series connection cooling system of low temperature hot fluid | |
| JP7453294B2 (en) | Control method for cooling water system equipment, control device for cooling water system equipment | |
| CN207033516U (en) | One kind utilizes LNG cold energy Collaborative Control turbine discharge back pressure systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |