CN103530509A - Method for analyzing energy saving ratio evaluating cogeneration unit economy - Google Patents
Method for analyzing energy saving ratio evaluating cogeneration unit economy Download PDFInfo
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- CN103530509A CN103530509A CN201310462987.4A CN201310462987A CN103530509A CN 103530509 A CN103530509 A CN 103530509A CN 201310462987 A CN201310462987 A CN 201310462987A CN 103530509 A CN103530509 A CN 103530509A
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Abstract
The invention relates to a method for analyzing the energy saving ratio evaluating cogeneration unit economy. The method comprises the steps that the concept of the energy saving ratio is defined, the energy saving ratio is a specific value between the primary energy amount consumed by divided heat and power generation and the primary energy amount consumed by combined heat and power generation when heat energy and electric energy with the same amount and quality are provided; the computational formula of the energy saving ratio is derived; according to the method for calculating the energy saving ratio, the economic analysis of cogeneration units is completed. According to the method, the concept of the energy saving ratio is introduced for the first time, and the comparison of mean level of the primary energy consumed under the combined generation mode and the divided generation mode of the local area is reflected when different types of units produce the same electric quantity and heat quantity under different production modes. Through the method, different types, different capacities and different running modes of the cogeneration units are established on the same benchmark platform for comparison, so that the running economic conditions of the cogeneration units are evaluated more accurately and objectively, and effective reference is provided for carrying out energy-saving supervision on thermoelectric units and putting energy-saving measures into practice.
Description
Technical field
The invention belongs to thermal power generation field of energy-saving technology, especially a kind of energy-conservation analytical approach that compares of evaluating cogeneration units economy.
Background technology
Coal-fired consumption proportion is larger from 6MW to 300MW capacity Bu Deng，Zhan China for China's cogeneration units.The key technical indexes of Evaluation: Current cogeneration units economy comprises the rate of fuel utilization (overall thermal efficiency) and the cogeneration of heat and power thermoelectricity ratio of cogeneration plant.The external conditions such as different its economy of unit and unit capacity, heat demand have substantial connection, i.e. the external condition of the non-unit oneself factor that impact is coal-fired is more, is difficult to scientifically weigh the energy consumption level of thermoelectricity unit with current unit economy index.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of energy-conservation analytical approach that compares of evaluating cogeneration units economy is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
Cogeneration units economy energy-conservation than an analytical approach, comprises that step is as follows:
(1) define the concept of energy-conservation ratio: energy-conservation ratio is when providing the thermal energy of same quantity and quality and electric energy, and thermoelectricity divides the ratio that produces the primary energy amount consuming with cogeneration of heat and power;
(2) the derive computing formula of energy-conservation ratio: equation expression is:
In formula: γ
enfor the energy-conservation ratio of unit;
for cogeneration units online delivery, MW.h;
for this heat supply regional power grid net coal consumption rate, g/ (kW.h);
for central heating critical point heating load, GJ;
for centralized heating boiler plant net thermal efficiency, %; B
coproduction enters stovefor cogeneration units enters stove mark coal consumption amount, ton;
(3) calculate the method for energy-conservation ratio, complete cogeneration units economic analysis; Circular is:
1. by cogeneration units generator power W and integrated plant power consumption rate ε, calculate cogeneration units online delivery
2. by cogeneration units heat supply extraction flow Q, the heat supply enthalpy h that draws gas
gwith the hydrophobic enthalpy h of heat exchangers for district heating
wcalculate central heating critical point heating load
3. cogeneration units enters stove mark coal consumption amount B
coproduction enters stovebe taken from the cogeneration units coal consumption entering furnace amount statistics in timing statistics section;
4. utilize energy-conservation in step (2) can calculate the energy-conservation ratio under this cogeneration units operating condition than computing formula.
And described step (1) energy-conservation ratio is, when energy-conservation ratio is 1.0, to show that the energy consumption level of power supply and heat supply is suitable with local area average level.
And the described step (2) energy-conservation source than each data volume in computing formula is respectively:
1. cogeneration units online delivery
come from unit electricity volume table data in timing statistics section;
2. this heat supply regional power grid net coal consumption rate
in this formula, agreement is got the average coa consumption rate of 340g/kW.h(whole nation 300MW pure condensing steam unit);
3. central heating critical point heating load
come from central heating critical point calorimeter data in timing statistics section;
4. centralized heating boiler plant net thermal efficiency
count collection stove room from electricity consumption, use steam consumption energy, can be taken as 76%;
5. cogeneration units enters stove mark coal consumption amount B
coproduction enters stovecome from cogeneration units coal consumption entering furnace amount statistics in timing statistics section.
Advantage of the present invention and good effect are:
The present invention introduces the concept of energy-conservation ratio first, reflects that dissimilar unit is under the different modes of production when production same charge and heat, and coproduction mode and local area divide the comparison that consumes primary energy average level under product mode.Pass through the method, can reflect cogeneration of heat and power unit operation energy-saving horizontal more scientificly, making the cogeneration units of dissimilar, different capabilities, different running method be based upon same reference platform compares, thereby more accurately and objectively evaluate the economical operation situation of cogeneration units, for thermoelectricity unit, carry out Energy Conservation Supervision, implement conservation measures and scheduling effective reference is provided.
Embodiment
Below the embodiment of the present invention is further described, it is emphasized that following embodiment is illustrative, rather than determinate, can not using this embodiment as limitation of the invention.
Cogeneration units economy energy-conservation than an analytical approach, comprises that step is as follows:
(1) define the concept of energy-conservation ratio: energy-conservation ratio refers to that, when the thermal energy of same quantity and quality and electric energy are provided to society, thermoelectricity divides the ratio that produces the primary energy amount consuming with cogeneration of heat and power; Energy-conservation ratio has reflected that dissimilar unit is under the different modes of production when production same charge and heat, and coproduction mode and local area divide the comparison that consumes primary energy average level under product mode; Energy-conservation ratio is larger, shows coproduction mode more energy-conservation than consuming primary energy by a minute product mode; When energy-conservation ratio is 1.0, illustrate that the energy consumption level of its power supply and heat supply is suitable with local area average level.
(2) the derive computing formula of energy-conservation ratio:
In formula: γ
enfor the energy-conservation ratio of unit;
for cogeneration units online delivery, MW.h;
for this heat supply regional power grid net coal consumption rate, g/ (kW.h);
for central heating critical point heating load, GJ;
for centralized heating boiler plant net thermal efficiency, %; B
coproduction enters stovefor cogeneration units enters stove mark coal consumption amount, ton; The energy-conservation source than each data volume in computing formula is respectively:
1. cogeneration units online delivery
come from unit electricity volume table data in timing statistics section;
2. this heat supply regional power grid net coal consumption rate
in this formula, agreement is got the average coa consumption rate of 340g/kW.h(whole nation 300MW pure condensing steam unit);
3. central heating critical point heating load
come from central heating critical point calorimeter data in timing statistics section;
4. centralized heating boiler plant net thermal efficiency
count collection stove room from electricity consumption, with power consumptions such as vapour, can be taken as 76%;
5. cogeneration units enters stove mark coal consumption amount B
coproduction enters stovecome from cogeneration units coal consumption entering furnace amount statistics in timing statistics section.
(3) calculate the method for energy-conservation ratio, complete cogeneration units economic analysis; Circular is:
1. by cogeneration units generator power W and integrated plant power consumption rate ε, calculate cogeneration units online delivery
2. by cogeneration units heat supply extraction flow Q, the heat supply enthalpy h that draws gas
gwith the hydrophobic enthalpy h of heat exchangers for district heating
wcalculate central heating critical point heating load
3. cogeneration units enters stove mark coal consumption amount B
coproduction enters stovebe taken from the cogeneration units coal consumption entering furnace amount statistics in timing statistics section;
4. utilize energy-conservation in step (2) can calculate the energy-conservation ratio under this cogeneration units operating condition than computing formula.
Claims (3)
1. evaluate the energy-conservation than an analytical approach of cogeneration units economy, it is characterized in that comprising that step is as follows:
(1) define the concept of energy-conservation ratio: energy-conservation ratio is when providing the thermal energy of same quantity and quality and electric energy, and thermoelectricity divides the ratio that produces the primary energy amount consuming with cogeneration of heat and power;
(2) the derive computing formula of energy-conservation ratio: equation expression is:
In formula: γ
enfor the energy-conservation ratio of unit;
for cogeneration units online delivery, MW.h;
for this heat supply regional power grid net coal consumption rate, g/ (kW.h);
for central heating critical point heating load, GJ;
for centralized heating boiler plant net thermal efficiency, %;
for cogeneration units enters stove mark coal consumption amount, ton;
(3) calculate the method for energy-conservation ratio, complete cogeneration units economic analysis; Circular is:
1. by cogeneration units generator power W and integrated plant power consumption rate ε, calculate cogeneration units online delivery
2. by cogeneration units heat supply extraction flow Q, the heat supply enthalpy h that draws gas
gwith the hydrophobic enthalpy h of heat exchangers for district heating
wcalculate central heating critical point heating load
3. cogeneration units enters stove mark coal consumption amount
be taken from the cogeneration units coal consumption entering furnace amount statistics in timing statistics section;
4. utilize energy-conservation in step (2) can calculate the energy-conservation ratio under this cogeneration units operating condition than computing formula.
2. evaluation cogeneration units economy according to claim 1 is energy-conservation than analytical approach, it is characterized in that: described step (1) energy-conservation ratio is, when energy-conservation ratio is 1.0, to show that the energy consumption level of power supply and heat supply is suitable with local area average level.
3. evaluation cogeneration units economy according to claim 1 is energy-conservation than analytical approach, it is characterized in that: the described step (2) energy-conservation source than each data volume in computing formula is respectively:
1. cogeneration units online delivery
come from unit electricity volume table data in timing statistics section;
2. this heat supply regional power grid net coal consumption rate
in this formula, agreement is got 340g/kW.h;
3. central heating critical point heating load
come from central heating critical point calorimeter data in timing statistics section;
4. centralized heating boiler plant net thermal efficiency
count collection stove room from electricity consumption, use steam consumption energy, can be taken as 76%;
5. cogeneration units enters stove mark coal consumption amount B
coproduction enters stovecome from cogeneration units coal consumption entering furnace amount statistics in timing statistics section.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525684A (en) * | 2017-07-03 | 2017-12-29 | 国网山东省电力公司电力科学研究院 | A kind of ratification method and system of cogeneration units heat supply period net coal consumption rate |
| CN107609751A (en) * | 2017-08-21 | 2018-01-19 | 广西电网有限责任公司 | A kind of method for quantitatively evaluating of cogeneration units centralized heating and energy conservation benefit |
| CN108665180A (en) * | 2018-05-18 | 2018-10-16 | 南京瑞松信息科技有限公司 | A kind of combustion and steam cogeneration units energy consumption index measuring method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286377A2 (en) * | 1987-04-10 | 1988-10-12 | International Cogeneration Corporation | Cogeneration system and method |
| CN1371066A (en) * | 2001-02-24 | 2002-09-25 | 谭中翔 | Computerized analysis system for quantified economic performance of coproducing heat and electricity |
| CN102494895A (en) * | 2011-11-29 | 2012-06-13 | 河北省电力建设调整试验所 | Analyzing method for energy saving and optimization of steam turbine set of power station |
-
2013
- 2013-10-08 CN CN201310462987.4A patent/CN103530509A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286377A2 (en) * | 1987-04-10 | 1988-10-12 | International Cogeneration Corporation | Cogeneration system and method |
| CN1371066A (en) * | 2001-02-24 | 2002-09-25 | 谭中翔 | Computerized analysis system for quantified economic performance of coproducing heat and electricity |
| CN102494895A (en) * | 2011-11-29 | 2012-06-13 | 河北省电力建设调整试验所 | Analyzing method for energy saving and optimization of steam turbine set of power station |
Non-Patent Citations (1)
| Title |
|---|
| 刘卫平 等: "评价热电联产机组经济性的节能比分析方法", 《中国电力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525684A (en) * | 2017-07-03 | 2017-12-29 | 国网山东省电力公司电力科学研究院 | A kind of ratification method and system of cogeneration units heat supply period net coal consumption rate |
| CN107525684B (en) * | 2017-07-03 | 2019-05-21 | 国网山东省电力公司电力科学研究院 | A kind of ratification method and system of cogeneration units heat supply period net coal consumption rate |
| CN107609751A (en) * | 2017-08-21 | 2018-01-19 | 广西电网有限责任公司 | A kind of method for quantitatively evaluating of cogeneration units centralized heating and energy conservation benefit |
| CN108665180A (en) * | 2018-05-18 | 2018-10-16 | 南京瑞松信息科技有限公司 | A kind of combustion and steam cogeneration units energy consumption index measuring method |
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Application publication date: 20140122 |