CN105352751A - System and method for measuring thermal efficiency and electrical efficiency of biomass gas generator set - Google Patents
System and method for measuring thermal efficiency and electrical efficiency of biomass gas generator set Download PDFInfo
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- CN105352751A CN105352751A CN201510936602.2A CN201510936602A CN105352751A CN 105352751 A CN105352751 A CN 105352751A CN 201510936602 A CN201510936602 A CN 201510936602A CN 105352751 A CN105352751 A CN 105352751A
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Abstract
The invention discloses a system and a method for measuring thermal efficiency and electrical efficiency of a biomass gas generator set. A biomass gas supply unit is connected with a biomass gas generating device, is used for collecting and filtering biomass gas and is connected with an engine by virtue of a pipeline; a flow and composition measuring unit is arranged on a pipeline and is used for measuring the flow and composition of biomass in real time; the engine is connected with a generator; the generator drives load operation; the power output end of the engine is connected in series with a torque sensor; a revolution speed transducer is used for measuring the real-time revolution speed of the engine; and a data acquisition processing unit is used for acquiring the output voltage and current of the flow and composition measuring unit, the torque sensor, the revolution speed transducer and the generator. According to the system and method disclosed by the invention, the thermal efficiency of the biomass engine, the efficiency of the generator and the thermal efficiency of the biomass gas engine unit or the thermal efficiency in a period of operating time, the efficiency of the generator and the thermal efficiency of the generator set can be measured in real time.
Description
Technical field
The present invention relates to a kind of biogas generating set heat efficiency and electrical efficiency measurement System and method for.
Background technology
Traditional fossil class energy is subject to the restriction of service cost and problem of environmental pollution.In order to the needs of the aggregate consumption and emissions reduction that control primary energy, widely popularize distributed biomass energy, become one of important directions of world energy sources development.Produce biogas or agriculture and forestry discarded object controlled oxygen deprivation thermal cracking with the fermentation such as poultry organic emission to produce thermal cracking biogas for fuel biogas genset and become main distributed energy resource system, the Appropriate application of these resources effectively can reduce atmosphere and water pollution.
An important feature of biogas is exactly that comparatively the fossil class A fuel A such as rock gas is low for its calorific value, there is fluctuation in the composition of its biogas in biogas genset operational process and calorific value, and there is larger otherness in the biogas that different methane station, thermal cracking biogas gasification station produce, the difference of gas component has influence on burning rate, the burning degree of perfection of engine, and then has influence on the thermal efficiency of engine.There is larger difference in the test result in the thermal efficiency, electrical efficiency and product development process when making biogas cluster engine actual motion on testing table.Effectively evaluating cannot be carried out to the design integrity of biogas engine block, can not objective assessment be realized to its energy utilization degree.
Summary of the invention
The present invention is in order to solve the problem, propose a kind of biogas generating set heat efficiency and electrical efficiency measurement System and method for, the present invention can measure the thermal efficiency of the thermal efficiency of biomass fermentation motivation, the efficiency of generator and biogas cluster engine in real time, or the thermal efficiency of the thermal efficiency, efficiency of generator and genset in one period of working time.
To achieve these goals, the present invention adopts following technical scheme:
A kind of biogas generating set heat efficiency and electrical efficiency measurement system, comprise biogas genset, flow and composition measurement unit, rotating speed torsion-testing unit and data acquisition process unit, wherein, biogas genset comprises biogas feed unit, engine and generator;
Described biogas feed unit connects biogas generation device, biogas is gathered, filter, biogas feed unit is by pipeline connecting engine, pipeline is provided with flow and composition measurement unit, the flow of real-time measurement living beings and composition, engine connects generator, generator drives load running, the power take-off of described engine is in series with torque sensor, the real-time rotate speed of engine measured by speed probe, data acquisition process unit gathers flow and composition measurement unit, torque sensor, the output voltage of speed probe and generator and electric current, calculate the power of engine, the electrical efficiency of the thermal efficiency and biogas genset.
Described data acquisition process unit utilizes the biogas flow and biogas composition that gather and goes out to input the heat of biogas generator according to the calorific value calculation of heterogeneity, the power of the engine output torque calculation engine utilizing the rotating speed of engine and torque sensor to gather, obtains the thermal efficiency of biogas engine by calculation engine power and the ratio of input heat.Utilizing the electromotive power output of generator output voltage and Current calculation generator simultaneously, by calculating the efficiency obtaining generator of electric power and engine output, being obtained the electrical efficiency of biogas genset by the ratio calculating electric power and input heat.
Described biogas feed unit, comprise biogas storage tank, biogas filtrator and biogas dehydrator, wherein, described biogas storage tank one end connects biogas generation device, the other end connects biogas filtrator by pipeline, filter particle wherein, biogas filtrator passes through pipeline connecting engine after connecting biogas dehydrator by pipeline.
Be provided with mixer between described engine and biogas feed unit, biogas is mixed with air.
Described biogas generation device is methane-generating pit or biogas producer.
Described generator is connected with load, and series current table in connection line, shunt voltage table, measures output current and the voltage of generator.
Based on the measuring method of said system, comprise the following steps: data acquisition process unit gathers biogas flow and biogas composition, by the actual calorific value of the calorific value calculation biogas of gas with various stored in system, and be input to the heat of biogas genset in conjunction with flow rate calculation; The power of the engine output torque calculation engine utilizing the rotating speed of engine and torque sensor to gather; The thermal efficiency of biogas engine is obtained by calculation engine power and the ratio of input heat, utilize the electromotive power output of generator output voltage and Current calculation generator, by calculating the efficiency obtaining generator of electric power and engine output, obtained the electrical efficiency of biogas genset by the ratio calculating electric power and input heat.
Further, data acquisition process unit solves the av eff in this period of working time to the thermal efficiency, efficiency of generator and the electrical efficiency integrating that set in working time.
Beneficial effect of the present invention is:
(1) the present invention can carry out effectively evaluating to the design integrity of biogas engine block, can realize objective assessment to its energy utilization degree;
(2) thermal efficiency of the thermal efficiency of biomass fermentation motivation, the efficiency of generator and biogas cluster engine can be measured in real time, or the thermal efficiency of the thermal efficiency, efficiency of generator and genset in one period of working time.
(3) according to the thermal efficiency of the thermal efficiency of the tested real-time thermal efficiency, efficiency of generator, biogas cluster engine and evenly heat efficiency, efficiency of generator and the genset in a period of time, optimize the method for operation of biogas generator, improve energy utilization rate, and guide the optimal design direction of genset.
Accompanying drawing explanation
Fig. 1 is biogas generating set heat efficiency of the present invention and electrical efficiency measurement device operating diagram;
Fig. 2 is the logical flow chart of biogas generating set heat efficiency of the present invention and electrical efficiency measurement method of operating;
Wherein, 101 hydrolock biogas storage tanks, 102 biogas filtrators, 103 biogas pipelines, 104 biogas dehydrators, 105 flowmeters, 106 biogas constituent measuring instruments, 107 mixers, 108 speed probes, 109 biogas engines, 110 torque sensors, 111 generators, 112 voltage tables, 113 reometers, 114 loads, 115 data acquisition processing systems.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, biogas generating set heat efficiency and electrical efficiency measurement device comprise: comprise biogas feedway, biogas flow and component measuring device, biogas engine, biomass fermentation motor, rotating speed and torque-measuring apparatus, data acquisition processing system.Function is the thermal efficiency of the thermal efficiency of survey calculation biomass fermentation motivation, the efficiency of generator and biogas cluster engine, or the thermal efficiency of the thermal efficiency, efficiency of generator and genset in one period of working time.Wherein the function of biogas feedway is for biogas engine provides biogas, the function of biogas flow and component measuring device measures flow and the composition of living beings in real time, the function of rotating speed and torque-measuring apparatus measures the output torque of rotating speed and the flywheel end started, and the function of data acquisition processing system calculates the thermal efficiency, efficiency of generator and electrical efficiency according to the data gathered.
The course of work of this biogas generating set heat efficiency and electrical efficiency measurement device is that the biogas produced in methane-generating pit or thermal cracking biogas producer is stored in hydrolock biogas storage tank 101, when biogas engine 109 starts, biogas filters out after particle wherein etc. through biogas filtrator 102 and enters biogas dehydrator 104, remove wherein excessive moisture, prevent the too high engine ignition that makes of water cut in biogas difficult, burning rate is slow, enter after fully mixing with air in mixer 107, supply biogas engine 109 combustion heat release, external acting.Inline flow meter 105 in biogas pipeline, and the flow and the composition that are connected to that biogas constituent measuring instrument 106 measures living beings in real time.The power take-off series connection torque sensor 110 of engine, burning is connected to generator 111, and generator 111 is connected with load 114, series current table 113 in circuit, shunt voltage table 112, measures output current and the voltage of generator 111 in real time.Data acquisition processing system 115 gathers parameters and calculates the electrical efficiency of the thermal efficiency of biogas engine, the efficiency of generator and biogas genset.
The invention provides the measuring method for biogas generating set heat efficiency and electrical efficiency.Be described in detail below with reference to Fig. 2.
In step sl, first start biogas genset, make it run at a certain stable conditions; Then data acquisition system biogas flow and biogas composition in step s 2; In step S3, the actual calorific value of the calorific value calculation biogas of gas with various of data handling system by storing in system, and the heat of biogas genset is input in conjunction with flow rate calculation; In step S4, the power of the engine output torque calculation engine utilizing the rotating speed of engine and torque sensor to gather; In step S5, obtained the thermal efficiency of biogas engine by calculation engine power and the ratio of input heat.In step S6, utilize the electromotive power output of generator output voltage and Current calculation generator; In step S7, by calculating the efficiency obtaining generator of electric power and engine output, obtained the electrical efficiency of biogas genset by the ratio calculating electric power and input heat.
Data handling system can also solve the av eff in this period of working time to the thermal efficiency, efficiency of generator and the electrical efficiency integrating set in working time.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (8)
1. a biogas generating set heat efficiency and electrical efficiency measurement system, it is characterized in that: comprise biogas genset, flow and composition measurement unit and data acquisition process unit, wherein, biogas genset comprises biogas feed unit, engine and generator;
Described biogas feed unit connects biogas generation device, biogas is gathered, filter, biogas feed unit is by pipeline connecting engine, pipeline is provided with flow and composition measurement unit, the flow of real-time measurement living beings and composition, engine connects generator, generator drives load running, the power take-off of described engine is in series with torque sensor, the real-time rotate speed of engine measured by speed probe, data acquisition process unit gathers flow and composition measurement unit, torque sensor, the output voltage of speed probe and generator and electric current, calculate the power of engine, the electrical efficiency of the thermal efficiency and biogas genset.
2. a kind of biogas generating set heat efficiency as claimed in claim 1 and electrical efficiency measurement system, it is characterized in that: described data acquisition process unit utilizes the biogas flow and biogas composition that gather and goes out to input the heat of biogas generator according to the calorific value calculation of heterogeneity, the power of the engine output torque calculation engine utilizing the rotating speed of engine and torque sensor to gather, obtains the thermal efficiency of biogas engine by calculation engine power and the ratio of input heat.Utilizing the electromotive power output of generator output voltage and Current calculation generator simultaneously, by calculating the efficiency obtaining generator of electric power and engine output, being obtained the electrical efficiency of biogas genset by the ratio calculating electric power and input heat.
3. a kind of biogas generating set heat efficiency as claimed in claim 1 and electrical efficiency measurement system, it is characterized in that: described biogas feed unit, comprise biogas storage tank, biogas filtrator and biogas dehydrator, wherein, described biogas storage tank one end connects biogas generation device, the other end connects biogas filtrator by pipeline, filters particle wherein, and biogas filtrator passes through pipeline connecting engine after connecting biogas dehydrator by pipeline.
4. a kind of biogas generating set heat efficiency as claimed in claim 1 and electrical efficiency measurement system, is characterized in that: be provided with mixer between described engine and biogas feed unit, mixed by biogas with air.
5. a kind of biogas generating set heat efficiency as claimed in claim 1 and electrical efficiency measurement system, is characterized in that: described biogas generation device is methane-generating pit or biogas producer.
6. a kind of biogas generating set heat efficiency as claimed in claim 1 and electrical efficiency measurement system, is characterized in that: described generator is connected with load, and series current table in connection line, shunt voltage table, measures output current and the voltage of generator.
7. based on the measuring method as the system as described in arbitrary in claim 1-6, it is characterized in that: comprise the following steps: data acquisition process unit gathers biogas flow and biogas composition, by the actual calorific value of the calorific value calculation biogas of gas with various stored in system, and be input to the heat of biogas genset in conjunction with flow rate calculation; The power of the engine output torque calculation engine utilizing the rotating speed of engine and torque sensor to gather; The thermal efficiency of biogas engine is obtained by calculation engine power and the ratio of input heat, utilize the electromotive power output of generator output voltage and Current calculation generator, by calculating the efficiency obtaining generator of electric power and engine output, obtained the electrical efficiency of biogas genset by the ratio calculating electric power and input heat.
8. measuring method as claimed in claim 7, is characterized in that: data acquisition process unit solves the av eff in this period of working time to the thermal efficiency, efficiency of generator and the electrical efficiency integrating that set in working time.
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Cited By (1)
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| CN113640663A (en) * | 2021-07-27 | 2021-11-12 | 江铃汽车股份有限公司 | Whole vehicle generator efficiency testing method based on power analyzer |
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Inventor after: Zhang Qiang Inventor after: Li Jingwei Inventor after: Li Na Inventor after: Li Guoxiang Inventor after: Li Menghan Inventor before: Zhang Qiang Inventor before: Li Na Inventor before: Li Guoxiang Inventor before: Li Menghan |
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