CN117291035A - Power evaluation method and system for intake cooling system of absorption refrigeration gas turbine - Google Patents
Power evaluation method and system for intake cooling system of absorption refrigeration gas turbine Download PDFInfo
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Abstract
The invention discloses a power evaluation method and a power evaluation system for an intake cooling system of an absorption refrigeration gas turbine, and belongs to the technical field of upgrading and reconstruction of combined cycle units. Under the condition of given expected benefits of the additionally arranged absorption type refrigerating gas turbine air inlet cooling system, key parameters such as heat absorption capacity of refrigerating equipment, auxiliary power, steam extraction capacity of a steam turbine, power change and the like are calculated by a repeated iteration method based on unit design parameters and performance correction curves, the gap between a calculated value and a target value of net power change of the unit is continuously reduced, and finally, a parameter table of the gas turbine air inlet cooling system under the condition of meeting the expected benefits is obtained. The method avoids complex thermodynamic simulation modeling, can rapidly and accurately calculate the parameters of the intake cooling system of the absorption refrigeration gas turbine, and is used for guiding feasibility research of modification projects and equipment design and model selection work.
Description
Technical Field
The invention belongs to the technical field of upgrading and reforming of combined cycle units, and relates to a power evaluation method and a power evaluation system for an air inlet cooling system of an absorption refrigeration gas turbine.
Background
The gas turbine inlet cooling system can improve the electric power of the combined cycle unit under the high-temperature condition, plays an important role in peak shaving of a power grid in summer, and therefore more and more combined cycle power plants are in demand for the gas turbine inlet cooling system reconstruction engineering application project.
The absorption refrigeration technology is a common and widely applied technical means for realizing the air intake cooling of the gas turbine, and because the absorption refrigeration needs to consume the energy of the original turbine of the unit to cause the power reduction of the turbine, the influence caused by the steam consumption needs to be considered when analyzing the net gain of the electric power of the unit. For engineering practical application, the capacity of the refrigeration station equipment is limited by a field, so that the subsequent evaluation work is generally carried out after the capacity of the refrigeration station equipment is roughly determined according to the field reserved space. Conventional thermodynamic simulation modeling methods are often complex and it is difficult to quickly evaluate the capacity of the refrigeration equipment required for system retrofit.
Disclosure of Invention
The invention aims to solve the problems that a thermodynamic simulation modeling method is generally complex and the capacity of refrigerating equipment required by system transformation is difficult to evaluate rapidly in the prior art, and provides a power evaluation method and a power evaluation system for an intake cooling system of an absorption refrigeration gas turbine.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention provides a power evaluation method for an intake cooling system of an absorption refrigeration gas turbine, which comprises the following steps:
acquiring a unit load and a fitting performance correction curve, and acquiring unit power change according to the fitting performance correction curve and the unit load;
acquiring the refrigerating capacity of the absorption refrigeration equipment, acquiring driving steam flow according to the refrigerating capacity of the absorption refrigeration equipment, and acquiring the power change of a steam turbine according to the driving steam flow;
acquiring a unit power increment and an auxiliary power consumption curve, and acquiring a unit net power change according to the unit power change, the turbine power change and the auxiliary power consumption curve;
and if the net power change of the unit and the power increment of the unit meet constraint conditions, obtaining a performance parameter table of the air inlet cooling system, and realizing power evaluation of the air inlet cooling system.
Preferably, the method for obtaining the fitting performance correction curve f (T) is as follows:
f(T)＝a×T 2 +b×T+c
wherein a, b and c are fitting constants for the change rule of the output power of the combined cycle unit along with the air inlet temperature of the combustion engine, and T is the temperature;
the unit power change DeltaW g The acquisition method of (1) is as follows:
wherein W is 0 For the unit load, T 0 Is the temperature of the gas inlet of the combustion engine, T 1 For the cooled air temperature, f (T 1 ) For unit power variation at gas engine inlet temperature, f (T 0 ) Is the unit power change at the cooled air temperature.
Preferably, the refrigerating capacity Q of the absorption refrigeration equipment 0 The acquisition method of (1) is as follows:
wherein RH is 0 The air inlet humidity, D is the air moisture content, F 0 Air flow, h is air moisture content, T 1 To cool the air temperature, T 0 Is the temperature of the gas inlet of the combustion engine, T b Dew point temperature;
calculating the corresponding dew point temperature T under the design parameters b The acquisition method of (1) is as follows:
preferably, the absorption refrigeration device drives steam flow F CQ The acquisition method of (1) is as follows:
wherein Q is 0 For the refrigerating capacity of the absorption refrigeration equipment, COP is the energy efficiency coefficient of the refrigeration equipment, H CQ Steam enthalpy for extracting steam from turbine to absorption refrigerator, H DW Is the return enthalpy of the absorption refrigerator.
Preferably, the turbine power change ΔW st The acquisition method of (1) is as follows:
wherein W is st0 For turbine load, F MS Is mainly steam flow, H MS Is the main vapor enthalpy, H EX Is the exhaust enthalpy of the steam turbine.
Preferably, the unit net power change ΔW u The acquisition method of (1) is as follows:
ΔW u ＝ΔW g -ΔW st -ΔW a
wherein DeltaW is a To fit the power consumption of the auxiliary machine of the refrigeration equipment, deltaW st For power variation of steam turbine, deltaW g The power of the unit is changed;
fitting refrigeration equipment auxiliary power consumption delta W a The acquisition method of (1) is as follows:
wherein d and e are fitting constants representing law of power consumption of refrigeration equipment paving machine along with change of refrigerating capacity, and Q 0 Is the refrigerating capacity of the absorption refrigeration equipment.
Preferably, the unit net power change and the unit power increment satisfy a constraint of ΔW u >ΔW 0 The method comprises the steps of carrying out a first treatment on the surface of the If DeltaW u ≤ΔW 0 Let T 1 ＝T 1 Delta T is brought into the turbine power change until the net power change of the unit and the increment of the unit power meet the constraint condition and the cycle is ended; wherein, deltaT is the temperature change value of the iterative calculation process.
The invention provides a power evaluation system of an intake cooling system of an absorption refrigeration gas turbine, which comprises:
the unit power change acquisition module is used for acquiring a unit load and a fitting performance correction curve and acquiring unit power change according to the fitting performance correction curve and the unit load;
the turbine power change acquisition module is used for acquiring the refrigerating capacity of the absorption refrigeration equipment, acquiring driving steam flow according to the refrigerating capacity of the absorption refrigeration equipment and acquiring turbine power change according to the driving steam flow;
the unit net power change acquisition module is used for acquiring a unit power increment and an auxiliary power consumption curve and acquiring the unit net power change according to the unit power change, the turbine power change and the auxiliary power consumption curve;
and the constraint condition judgment module is used for obtaining the performance parameter table of the air inlet cooling system and realizing power evaluation of the air inlet cooling system when the net power change of the unit and the power increment of the unit meet constraint conditions.
A computer device comprising a memory storing a computer program and a processor implementing the steps of a method for evaluating power of an intake cooling system of an absorption refrigeration burner when the computer program is executed.
A computer readable storage medium storing a computer program which when executed by a processor implements the steps of a method of power assessment of an absorption refrigeration combustion engine intake air cooling system.
Compared with the prior art, the invention has the following beneficial effects:
the invention aims to provide a power evaluation method of an absorption type refrigerating gas turbine air inlet cooling system, which is characterized in that under the condition of given expected benefits of an additionally arranged absorption type refrigerating gas turbine air inlet cooling system, key parameters such as heat absorption capacity of refrigerating equipment, auxiliary power, steam extraction capacity of a steam turbine, power change and the like are calculated by a repeated iteration method based on unit design parameters and performance correction curves, the gap between a calculated value and a target value of net power change of the unit is continuously reduced, and finally the net power change of the gas turbine air inlet cooling system under the condition of meeting the expected benefits is obtained. Therefore, the evaluation method provided by the invention can be used for quickly and accurately calculating the parameters of the air inlet cooling system of the absorption refrigeration gas turbine under the given expected benefit condition by combining the set design parameters, and guiding the feasibility study of the modification project and the equipment design and model selection work. Complex thermodynamic simulation modeling is avoided, and the method can be used for guiding feasibility study of modification projects and equipment design and model selection work.
According to the power evaluation system for the intake cooling system of the absorption refrigeration gas turbine, provided by the invention, the power evaluation of the intake cooling system is realized by dividing the system into the unit power change acquisition module, the turbine power change acquisition module, the unit net power change acquisition module and the constraint condition judgment module. The modules are mutually independent by adopting a modularized idea, so that the modules are convenient to manage uniformly.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for evaluating the power of an intake cooling system of an absorption refrigeration combustion engine.
Fig. 2 is a flowchart of a power evaluation method of an intake cooling system of an absorption refrigeration gas turbine according to the present invention.
Fig. 3 is a trend chart of the calculation results of a case item according to the present invention.
Fig. 4 is a diagram of an intake air cooling system power evaluation system of an absorption refrigeration combustion engine according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention is described in further detail below with reference to the attached drawing figures:
the invention provides a power evaluation method of an intake cooling system of an absorption refrigeration gas turbine, as shown in figure 1, comprising the following steps:
s1, acquiring a unit load and a fitting performance correction curve, and acquiring unit power change according to the fitting performance correction curve and the unit load;
the method for acquiring the fitting performance correction curve f (T) comprises the following steps:
f(T)＝a×T 2 +b×T+c
wherein a, b and c are fitting constants for the change rule of the output power of the combined cycle unit along with the air inlet temperature of the combustion engine, and T is the temperature;
the unit power change DeltaW g The acquisition method of (1) is as follows:
wherein W is 0 For the unit load, T 0 Is the temperature of the gas inlet of the combustion engine, T 1 For the cooled air temperature, f (T 1 ) For unit power variation at gas engine inlet temperature, f (T 0 ) Is the unit power change at the cooled air temperature.
S2, acquiring the refrigerating capacity of the absorption refrigeration equipment, acquiring driving steam flow according to the refrigerating capacity of the absorption refrigeration equipment, and acquiring the power change of a steam turbine according to the driving steam flow;
refrigerating capacity Q of the absorption refrigeration equipment 0 The acquisition method of (1) is as follows:
wherein RH is 0 The air inlet humidity, D is the air moisture content, F 0 Air flow, h is air moisture content, T 1 To cool the air temperature, T 0 Is the temperature of the gas inlet of the combustion engine, T b Dew point temperature;
calculating the corresponding dew point temperature T under the design parameters b The acquisition method of (1) is as follows:
the absorption refrigeration equipment drives steam flow F CQ The acquisition method of (1) is as follows:
wherein Q is 0 For the refrigerating capacity of the absorption refrigeration equipment, COP is the energy efficiency coefficient of the refrigeration equipment, H CQ Steam enthalpy for extracting steam from turbine to absorption refrigerator, H DW For backwater enthalpy of absorption refrigerator。
Turbine power variation ΔW st The acquisition method of (1) is as follows:
wherein W is st0 For turbine load, F MS Is mainly steam flow, H MS Is the main vapor enthalpy, H EX Is the exhaust enthalpy of the steam turbine.
S3, acquiring a unit power increment and an auxiliary power consumption curve, and acquiring a unit net power change according to the unit power change, the turbine power change and the auxiliary power consumption curve;
the net power change DeltaW of the machine set u The acquisition method of (1) is as follows:
ΔW u ＝ΔW g -ΔW st -ΔW a
wherein DeltaW is a To fit the power consumption of the auxiliary machine of the refrigeration equipment, deltaW st For power variation of steam turbine, deltaW g The power of the unit is changed;
fitting refrigeration equipment auxiliary power consumption delta W a The acquisition method of (1) is as follows:
wherein d and e are fitting constants representing law of power consumption of refrigeration equipment paving machine along with change of refrigerating capacity, and Q 0 Is the refrigerating capacity of the absorption refrigeration equipment.
S4, if the net power change of the unit and the power increment of the unit meet constraint conditions, obtaining a performance parameter table of the air inlet cooling system, and realizing power evaluation of the air inlet cooling system.
The net power change of the unit and the increment of the unit power meet constraint conditions as delta W u >ΔW 0 The method comprises the steps of carrying out a first treatment on the surface of the If DeltaW u ≤ΔW 0 Let T 1 ＝T 1 Delta T is brought into the turbine power change until the net power change of the unit and the increment of the unit power meet the constraint condition and the cycle is ended; wherein DeltaT isAnd (5) iteratively calculating the temperature change value of the process, wherein DeltaT is 0.1.
As shown in fig. 2, a detailed flowchart of a power evaluation method of an intake cooling system of an absorption refrigeration gas turbine according to the present invention is described in detail below with reference to examples:
A. the obtained unit design parameters comprise:
load W of unit 0 = 61.467MW, gas turbine inlet temperature T 0 =33 ℃, intake humidity RH 0 =80%, air flow rate F 0 = 610.7t/h, main steam flow F MS =65.1 t/H, main steam enthalpy H MS =3509 kJ/kg, steam turbine extraction to absorption chiller vapor enthalpy H CQ Return enthalpy H of absorption refrigerator with 2966kJ/kg DW =762 kJ/kg, steam turbine exhaust enthalpy H EX ＝2402kJ/kg。
The energy efficiency coefficient of the absorption refrigerator to be used is COP=1.4, and the refrigerating capacity Q is improved 0 Equipment auxiliary power consumption DeltaW when 775kW a 115kW, refrigerating capacity Q 0 Equipment auxiliary power consumption DeltaW when 1500kW a ＝200kW。
The fitting formula of the environmental temperature correction curve f (T) of the combined cycle unit is as follows:
f(T)＝-9.2818×10 -5 ×T 2 -5.6910×10 -4 ×T+1.0452
refrigeration equipment auxiliary power consumption curve delta W a The fitting formula is:
B. expected unit power increment delta W after given additionally arranged absorption type gas turbine air inlet cooling system 0 =2mw. Assuming that the temperature of the air after intake air cooling is T 1 = (33-1) deg.c, the change in unit power Δw is calculated g ：
C. Calculating the correspondence under the design parametersDew point temperature T of (2) b ：
T 1 At =33℃, T 1 >T b Calculating refrigerating capacity Q of refrigerating equipment 0 ：
Q 0 ＝F 0 ×[h out (RH 0 ,T 1 ,D 0 (RH 0 ,T 0 ))-h in (RH 0 ,T 0 )]
＝400×1000×(100.0-98.9)kJ/h＝421786kJ/h
The energy efficiency coefficient of the absorption refrigeration machine to be adopted in a certain reconstruction project is COP=1.4, and the steam flow F required by the absorption refrigeration equipment is calculated according to the energy efficiency coefficient CQ ：
D. Calculating turbine power change ΔW st ：
E. Net power change ΔW of computer group u ：
ΔW u ＝ΔW g -ΔW st -ΔW a ＝(0.460-0.020-0.019)MW＝0.421MW
F. At this time DeltaW u =0.421 MW less than Δw 0 =2.5 MW, let T 1 ＝T 1 -0.1 ℃ =29.9 ℃, repeating steps B to D. Continuing to calculate when T 1 At =29.0deg.C, T 1 <T b Calculating refrigerating capacity Q of absorption refrigeration equipment 0 The formula changes. Continuing to calculate when T 1 Δw at=25.4℃ u =2.488 MW; when T is 1 ＝25.3℃，ΔW u = 2.508MW, the calculation ends. Detailed process calculation tables are shown in tables 1 and 2, and the calculation junctionsThe result is shown in figure 3.
Table 1 case project set design parameters table
Table 2 case project calculation forms
The invention provides a power evaluation system of an intake cooling system of an absorption refrigeration gas turbine, which is shown in fig. 4, and comprises a unit power change acquisition module, a turbine power change acquisition module, a unit net power change acquisition module and a constraint condition judgment module;
the unit power change acquisition module is used for acquiring a unit load and a fitting performance correction curve, and acquiring unit power change according to the fitting performance correction curve and the unit load;
the turbine power change acquisition module is used for acquiring the refrigerating capacity of the absorption refrigeration equipment, acquiring driving steam flow according to the refrigerating capacity of the absorption refrigeration equipment and acquiring turbine power change according to the driving steam flow;
the unit net power change acquisition module is used for acquiring a unit power increment and an auxiliary power consumption curve and acquiring the unit net power change according to the unit power change, the turbine power change and the auxiliary power consumption curve;
and the constraint condition judging module is used for obtaining the performance parameter table of the air inlet cooling system when the net power change of the unit and the power increment of the unit meet constraint conditions, so as to realize power evaluation of the air inlet cooling system.
The terminal equipment provided by the embodiment of the invention comprises: a processor, a memory, and a computer program stored in the memory and executable on the processor. The steps of the various method embodiments described above are implemented when the processor executes the computer program. Alternatively, the processor may implement the functions of the modules/units in the above-described device embodiments when executing the computer program.
The computer program may be divided into one or more modules/units, which are stored in the memory and executed by the processor to accomplish the present invention.
The terminal equipment can be computing equipment such as a desktop computer, a notebook computer, a palm computer, a cloud server and the like. The terminal device may include, but is not limited to, a processor, a memory.
The processor may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like.
The memory may be used to store the computer program and/or module, and the processor may implement various functions of the terminal device by running or executing the computer program and/or module stored in the memory and invoking data stored in the memory.
The modules/units integrated in the terminal device may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
The power evaluation method for the intake cooling system of the absorption refrigeration gas turbine provided by the invention has the following advantages:
1) According to the method, under the given expected income condition, the unit design parameters are combined, a simple mathematical formula is utilized, complex thermodynamic simulation modeling is avoided, the parameters of the air inlet cooling system of the absorption refrigeration combustion engine can be rapidly and accurately calculated, and feasibility research of modification projects and equipment design and model selection work are guided.
2) Under the condition of given expected benefits of the additionally arranged absorption type refrigerating gas turbine air inlet cooling system, key parameters such as heat absorption capacity of refrigerating equipment, auxiliary power, steam extraction capacity of a steam turbine, power change and the like are calculated by a repeated iteration method based on unit design parameters and performance correction curves, the gap between a calculated value and a target value of net power change of the unit is continuously reduced, and finally parameters of the gas turbine air inlet cooling system under the condition of meeting the expected benefits are obtained.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The power evaluation method for the intake cooling system of the absorption refrigeration combustion engine is characterized by comprising the following steps of:
acquiring a unit load and a fitting performance correction curve, and acquiring unit power change according to the fitting performance correction curve and the unit load;
acquiring the refrigerating capacity of the absorption refrigeration equipment, acquiring driving steam flow according to the refrigerating capacity of the absorption refrigeration equipment, and acquiring the power change of a steam turbine according to the driving steam flow;
acquiring a unit power increment and an auxiliary power consumption curve, and acquiring a unit net power change according to the unit power change, the turbine power change and the auxiliary power consumption curve;
and if the net power change of the unit and the power increment of the unit meet constraint conditions, obtaining a performance parameter table of the air inlet cooling system, and realizing power evaluation of the air inlet cooling system.
2. The power evaluation method of an intake air cooling system of an absorption refrigeration combustion engine according to claim 1, wherein the method for obtaining the fitting performance correction curve f (T) is as follows:
f(T)＝a×T 2 +b×T+c
wherein a, b and c are fitting constants for the change rule of the output power of the combined cycle unit along with the air inlet temperature of the combustion engine, and T is the temperature;
the unit power change DeltaW g The acquisition method of (1) is as follows:
wherein W is 0 For the unit load, T 0 Is the temperature of the gas inlet of the combustion engine, T 1 For the cooled air temperature, f (T 1 ) For unit power variation at gas engine inlet temperature, f (T 0 ) Is the unit power change at the cooled air temperature.
3. The absorption chiller gas turbine intake cooling system power of claim 1The evaluation method is characterized in that the refrigerating capacity Q of the absorption refrigeration equipment 0 The acquisition method of (1) is as follows:
wherein RH is 0 The air inlet humidity, D is the air moisture content, F 0 Air flow, h is air moisture content, T 1 To cool the air temperature, T 0 Is the temperature of the gas inlet of the combustion engine, T b Dew point temperature;
calculating the corresponding dew point temperature T under the design parameters b The acquisition method of (1) is as follows:
4. the method for evaluating power of an intake cooling system of an absorption refrigeration burner according to claim 1, wherein the absorption refrigeration device drives a steam flow F CQ The acquisition method of (1) is as follows:
wherein Q is 0 For the refrigerating capacity of the absorption refrigeration equipment, COP is the energy efficiency coefficient of the refrigeration equipment, H CQ Steam enthalpy for extracting steam from turbine to absorption refrigerator, H DW Is the return enthalpy of the absorption refrigerator.
5. The method for evaluating the power of an intake cooling system of an absorption refrigeration combustion engine as recited in claim 1, wherein the turbine power varies by Δw st The acquisition method of (1) is as follows:
wherein W is st0 For turbine load, F MS Is mainly steam flow, H MS Is the main vapor enthalpy, H EX Is the exhaust enthalpy of the steam turbine.
6. The method for power assessment of an absorption chiller gas turbine intake cooling system of claim 1, wherein the unit net power change aw u The acquisition method of (1) is as follows:
ΔW u ＝ΔW g -ΔW st -ΔW a
wherein DeltaW is a To fit the power consumption of the auxiliary machine of the refrigeration equipment, deltaW st For power variation of steam turbine, deltaW g The power of the unit is changed;
fitting refrigeration equipment auxiliary power consumption delta W a The acquisition method of (1) is as follows:
wherein d and e are fitting constants representing law of power consumption of refrigeration equipment paving machine along with change of refrigerating capacity, and Q 0 Is the refrigerating capacity of the absorption refrigeration equipment.
7. The method for power assessment of an absorption chiller gas turbine intake cooling system of claim 1 wherein the net power change of the unit and the unit power delta meet a constraint of Δw u >ΔW 0 The method comprises the steps of carrying out a first treatment on the surface of the If DeltaW u ≤ΔW 0 Let T 1 ＝T 1 Delta T is brought into the turbine power change until the net power change of the unit and the increment of the unit power meet the constraint condition and the cycle is ended; wherein, deltaT is the temperature change value of the iterative calculation process.
8. An absorption refrigeration gas turbine intake cooling system power evaluation system, comprising:
the unit power change acquisition module is used for acquiring a unit load and a fitting performance correction curve and acquiring unit power change according to the fitting performance correction curve and the unit load;
the turbine power change acquisition module is used for acquiring the refrigerating capacity of the absorption refrigeration equipment, acquiring driving steam flow according to the refrigerating capacity of the absorption refrigeration equipment and acquiring turbine power change according to the driving steam flow;
the unit net power change acquisition module is used for acquiring a unit power increment and an auxiliary power consumption curve and acquiring the unit net power change according to the unit power change, the turbine power change and the auxiliary power consumption curve;
and the constraint condition judgment module is used for obtaining the performance parameter table of the air inlet cooling system and realizing power evaluation of the air inlet cooling system when the net power change of the unit and the power increment of the unit meet constraint conditions.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the method for evaluating the power of an intake cooling system of an absorption refrigeration burner according to any one of claims 1 to 7.
10. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the absorption refrigeration burner intake cooling system power evaluation method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311257038.2A CN117291035A (en) | 2023-09-26 | 2023-09-26 | Power evaluation method and system for intake cooling system of absorption refrigeration gas turbine |
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