CN110455856A - A kind of supersaturation flue gas condenser thermal property measuring system and its measurement method - Google Patents
A kind of supersaturation flue gas condenser thermal property measuring system and its measurement method Download PDFInfo
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- CN110455856A CN110455856A CN201910695747.6A CN201910695747A CN110455856A CN 110455856 A CN110455856 A CN 110455856A CN 201910695747 A CN201910695747 A CN 201910695747A CN 110455856 A CN110455856 A CN 110455856A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The invention discloses a kind of supersaturated flue gas condenser thermal property measuring system and its measurement methods, for measuring to single condenser or the multiple condensers being sequentially connected in series；Measuring system includes: test platform ontology, flue, working medium pipeline, flue gas measurement module and working medium measurement module.The present invention can carry out thermal property evaluation to the flue gas condenser of arbitrary structures and material, pass through the acquisition to flue and the different data parameter of working medium pipeline, in conjunction with the calculation formula of condenser efficiency level, it is horizontal to obtain condenser efficiency, by the temperature for changing inlet flue gas, the efficiency curve of condenser is formed, structure is simple, and measurement accuracy is high, measurement effect is good.
Description
Technical field
The present invention relates to condenser thermal property field of measuring technique, more particularly to a kind of supersaturated flue gas is cold
Condenser thermal property measuring system and its measurement method.
Background technique
Condenser is the parts of refrigeration system, belongs to one kind of heat exchanger, gas or steam can be transformed into liquid, will managed
Heat in son is passed in the air near pipe in a manner of cracking.Condenser working process is an exothermic process, institute
It is all higher with condenser temperature.Power plant is condensed with the steam that turbine is discharged in many condensers.It is freezing
With condenser come the refrigerant vapor of condensate ammonia and freon etc in factory.In petro chemical industry with condenser make hydro carbons and other
Chemical evapn condensation.In distillation process, the device that steam is transformed into liquid is also referred to as condenser.All condensers are all
The heat of gas or steam is taken away and is operated.
The boiler combustion of cooling in to(for) flue gas is also required to realize by condenser, and the performance of condenser is for flue gas
Emission effect plays crucial effect, and therefore, measurement and research for condenser thermal property also just become more and more important.
But there are no the system and method for accurately and effectively measuring condenser thermal property currently on the market.
Therefore, how to provide a kind of measurement accuracy is high, measurement effect is good flue gas condenser thermal property measuring system and
The problem of its measurement method is those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, can quickly have the present invention provides a kind of supersaturated flue gas condenser thermal property measuring system
Effect ground, which is realized, carries out thermal property evaluation to the flue gas condenser of arbitrary structures and material, and structure is simple, and measurement is convenient.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of supersaturation flue gas condenser thermal property measuring system, for single condenser or being sequentially connected in series more
A condenser measures；It include: that test platform ontology, flue, working medium pipeline, flue gas measurement module and working medium are surveyed
Measure module；
The test platform ontology generates flue gas by burner combustion, and for flue gas output and working medium reflux；
Described flue one end is connected to the flue gas output end of the test platform ontology, the other end with it is single described cold
Condenser connection, or be sequentially connected in series and be connected to multiple condensers；
The working medium pipeline is used to convey liquid working substance to the condenser, and returns with the working medium of the test platform ontology
Flow end connection；
The quantity of the flue gas measurement module is multiple, and is connected to the flue, the flue gas measurement module cloth
The gas inlet in each condenser and outlet are set, shares a flue gas between the every two adjacent condenser
Measurement module, and temperature, pressure, ingredient and water capacity for measuring flue gas；
The working medium measurement module is connected to the working medium pipeline, and is arranged in the import of the working medium pipeline and is gone out
Mouthful, the working medium measurement module is used to measure the temperature, pressure and flow of liquid working substance.
Through the above technical solutions, the present invention provides a kind of supersaturated flue gas condenser thermal property measuring system, energy
Enough flue gas condensers to arbitrary structures and material carry out thermal property evaluation, pass through the difference to flue and working medium pipeline
The acquisition of data parameters obtains condenser efficiency level, and by changing the temperature of inlet flue gas, the efficiency for forming condenser is bent
Line, structure is simple, and measurement accuracy is high, measurement effect is good.
It should be noted that condenser material and structure need to meet safety requirements as defined in national legislation, standard, it is different
Condenser, every group of cooling is about 10 DEG C.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measuring system, the flue gas measurement module
It include: the temperature sensor for measuring flue-gas temperature, standard uncertainty is no more than 0.5%, for measuring flue gas pressures
Pressure sensor, standard uncertainty are no more than 0.5%, the fume component analysis instrument for measuring smoke components, O2、CO2Mark
Quasi- uncertainty is no more than 0.5%, and CO, NOx standard uncertainty are no more than 2.5%, and for measuring containing for humidity of flue gas
Moisture tester, standard uncertainty are no more than 1.0%.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measuring system, the working medium measurement module
It include: the temperature sensor for surveying Temperature of Working, standard uncertainty is no more than 0.5%, the pressure for measuring power pressure
Force snesor, standard uncertainty are no more than 0.2%, the flowmeter for measuring working medium flow, and standard uncertainty is no more than
2.0%.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measuring system, the flue enters
Mouth temperature control is between 100 DEG C -200 DEG C.Be conducive to change flue-gas temperature, export condenser efficiency curve.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measuring system, in the flue
Dry flue gas flow and the wet flue gas flow before not condensing, pass through NB/T47066-2018 " condensing boiler after flame combustion
Thermal Performance Test method " it is calculated；Smoke moisture passes through " the condensing boiler Thermal Performance Test side NB/T47066-2018
Method " Appendix B measurement obtains.It can quickly and easily realize the calculating of parameter.
The present invention also provides a kind of supersaturated flue gas condenser thermal property measurement methods:
Condenser efficiency level=working medium side inputs heat/fume side quantity of heat given up × 100%；
Wherein:
Working medium side input heat=leave the working medium heat-of condenser into the working medium heat of condenser；
Fume side quantity of heat given up=dry flue gas releases vapor condensation release vaporization latent heat+flue gas in heat+flue gas
Middle gaseous medium releases heat；
By changing the flue-gas temperature of flue entrance, it is capable of forming condenser efficiency assessment of levels curve.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measurement method, dry flue gas is exothermic
Calculation formula are as follows:
In formula:
Qd.fg- dry flue gas releases heat, kJ；
- dry flue gas corresponds to the density under inlet temperature t1, import total pressure p1, kg/m3；By GB/T10184-
E.3,2015 tables carry out calculating ρ0, the density at a temperature of t1 is then converted, convert formula is calculated as follows:
Vd.fg- dry flue gas volume, m3 are calculated by formula in NB/T47066-2018 (29)；
The import average specific heat at constant pressure of-dry flue gas holds, kJ/ (kg DEG C), based on NB/T47066-2018 annex E
It calculates；
t1- inlet temperature, DEG C；
- dry flue gas corresponds to the density under outlet temperature t2, outlet total pressure p2, kg/m3, by GB/T10184-
E.3,2015 tables carry out calculating ρ0, the density at a temperature of t2 is then converted, convert formula is calculated as follows:
The outlet average specific heat at constant pressure of-dry flue gas holds, kJ/ (kg DEG C), based on NB/T47066-2018 annex E
It calculates.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measurement method, vapor is condensed in flue gas
The calculation formula of release vaporization latent heat are as follows:
In formula:
Qd.fgVapor condensation release heat, kJ in-flue gas；
Vapor averag density, kg/m3 are calculated as follows in-flue gas:
t1'Steam temperature in-import flue gas, DEG C, measurement obtains；
t2'Steam temperature in-exiting flue gas, DEG C, measurement obtains；
Vcond.fg.1Vapor volume in-import flue gas, m3 are calculated by formula in NB/T47066-2018 (26)；
Vcond.fg.2Vapor volume in-exiting flue gas, m3 are calculated by formula in NB/T47066-2018 (28)；
γcond- steam gasification latent heat, kJ/ (kg DEG C), is looked by bibliography in NB/T47066-2018 and is taken.
Preferably, in a kind of above-mentioned supersaturated flue gas condenser thermal property measurement method, gaseous medium is put in flue gas
The calculation formula of heat out are as follows:
Qv.fg=ρv.fgVcond.fg.2(hv.fg.1-hv.fg.2)；
Qv.fgVapor (gaseous state) discharges heat, kJ in-flue gas；
ρv.fgVapor averag density, kg/m3 are calculated as follows in-flue gas:
hv.fg.1Vapor (gaseous state) enthalpy in-import flue gas, kJ/kg, according to import water vapour pressure in import flue gas
P1With temperature t1', look into and take by bibliography in NB/T47066-2018；
hv.fg.2Vapor (gaseous state) enthalpy in-exiting flue gas, kJ/kg, according to import water vapour pressure in exiting flue gas
P2With temperature t2', look into and take by bibliography in NB/T47066-2018.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides a kind of supersaturated flue gases
Condenser thermal property measuring system and its measurement method can carry out thermal technology's property to the flue gas condenser of arbitrary structures and material
It can evaluate, by the acquisition to flue and the different data parameter of working medium pipeline, in conjunction with the calculating of condenser efficiency level
Formula obtains condenser efficiency level by the temperature of change inlet flue gas and forms the efficiency curve of condenser, and structure is simple,
Measurement accuracy is high, measurement effect is good.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is system structure diagram provided by the invention.
Wherein:
1- condenser；
2- test platform ontology；
3- flue；
4- working medium pipeline；
5- flue gas measurement module；
6- working medium measurement module；
7- burner.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Referring to attached drawing 1, the embodiment of the invention discloses a kind of supersaturated flue gas condenser thermal property measuring systems, are used for
Single condenser 1 or the multiple condensers 2 being sequentially connected in series are measured；It include: test platform ontology 2, flue 3, work
Matter pipeline 4, flue gas measurement module 5 and working medium measurement module 6；
Test platform ontology 2 generates flue gas by the burning of burner 7, and for flue gas output and working medium reflux；
3 one end of flue is connected to the flue gas output end of test platform ontology 2, and the other end is connected to single condenser 1,
Or it is sequentially connected in series and is connected to multiple condensers 1；
Working medium pipeline 4 is used to convey liquid working substance to condenser 1, and is connected to the working medium of test platform ontology 2 reflux end；
The quantity of flue gas measurement module 5 is multiple, and is connected to flue 3, and flue gas measurement module 5 is arranged in each cold
The gas inlet of condenser 1 and outlet share a flue gas measurement module 5 between every two adjacent condenser 1, and for measuring
Temperature, pressure, ingredient and the water capacity of flue gas；
Working medium measurement module 6 is connected to working medium pipeline 4, and is arranged in the inlet and outlet of working medium pipeline 4, and working medium is surveyed
Amount module 6 is used to measure the temperature, pressure and flow of liquid working substance.
In order to further optimize the above technical scheme, flue gas measurement module 5 includes: to pass for measuring the temperature of flue-gas temperature
Sensor, standard uncertainty are no more than 0.5%, the pressure sensor for measuring flue gas pressures, and standard uncertainty is no more than
0.5%, for measuring the fume component analysis instrument of smoke components, O2、CO2Standard uncertainty is no more than 0.5%, CO, NOx
Standard uncertainty is no more than 2.5%, and the water capacity tester for measuring humidity of flue gas, standard uncertainty are no more than
1.0%.
In order to further optimize the above technical scheme, working medium measurement module 6 includes: the temperature sensing for surveying Temperature of Working
Device, standard uncertainty are no more than 0.5%, the pressure sensor for measuring power pressure, and standard uncertainty is no more than
0.2%, for measuring the flowmeter of working medium flow, standard uncertainty is no more than 2.0%.
In order to further optimize the above technical scheme, the inlet temperature of flue 3 controls between 100 DEG C -200 DEG C.
In order to further optimize the above technical scheme, the dry flue gas flow in flue 3 and wet before not condensing
Flue gas flow is calculated after flame combustion by NB/T47066-2018 " condensing boiler Thermal Performance Test method "；Cigarette
Air humidity degree is obtained by NB/T47066-2018 " condensing boiler Thermal Performance Test method " Appendix B measurement.
Embodiment 2:
The embodiment of the invention discloses a kind of supersaturated flue gas condenser thermal property measurement methods, it is characterised in that:
Condenser efficiency level=working medium side inputs heat/fume side quantity of heat given up × 100%；
Wherein:
Working medium side input heat=leave the working medium heat-of condenser into the working medium heat of condenser；
Fume side quantity of heat given up=dry flue gas releases vapor condensation release vaporization latent heat+flue gas in heat+flue gas
Middle gaseous medium releases heat；
By changing the flue-gas temperature of flue entrance, it is capable of forming condenser efficiency assessment of levels curve.
In order to further optimize the above technical scheme, the exothermic calculation formula of dry flue gas are as follows:
In formula:
Qd.fg- dry flue gas releases heat, kJ；
- dry flue gas corresponds to the density under inlet temperature t1, import total pressure p1, kg/m3；By GB/T10184-
E.3,2015 tables carry out calculating ρ0, the density at a temperature of t1 is then converted, convert formula is calculated as follows:
Vd.fg- dry flue gas volume, m3 are calculated by formula in NB/T47066-2018 (29)；
The import average specific heat at constant pressure of-dry flue gas holds, kJ/ (kg DEG C), based on NB/T47066-2018 annex E
It calculates；
t1- inlet temperature, DEG C；
- dry flue gas corresponds to the density under outlet temperature t2, outlet total pressure p2, kg/m3, by GB/T10184-
E.3,2015 tables carry out calculating ρ0, the density at a temperature of t2 is then converted, convert formula is calculated as follows:
The outlet average specific heat at constant pressure of-dry flue gas holds, kJ/ (kg DEG C), based on NB/T47066-2018 annex E
It calculates.
In order to further optimize the above technical scheme, vapor condensation discharges the calculation formula for vaporizing latent heat in flue gas
Are as follows:
In formula:
Qd.fgVapor condensation release heat, kJ in-flue gas；
Vapor averag density, kg/m3 are calculated as follows in-flue gas:
t1'Steam temperature in-import flue gas, DEG C, measurement obtains；
t2'Steam temperature in-exiting flue gas, DEG C, measurement obtains；
Vcond.fg.1Vapor volume in-import flue gas, m3 are calculated by formula in NB/T47066-2018 (26)；
Vcond.fg.2Vapor volume in-exiting flue gas, m3 are calculated by formula in NB/T47066-2018 (28)；
γcond- steam gasification latent heat, kJ/ (kg DEG C), is looked by bibliography in NB/T47066-2018 and is taken.
In order to further optimize the above technical scheme, the exothermic calculation formula of gaseous medium in flue gas are as follows:
Qv.fg=ρv.fgVcond.fg.2(hv.fg.1-hv.fg.2)；
Qv.fgVapor (gaseous state) discharges heat, kJ in-flue gas；
ρv.fgVapor averag density, kg/m3 are calculated as follows in-flue gas:
hv.fg.1Vapor (gaseous state) enthalpy in-import flue gas, kJ/kg, according to import water vapour pressure in import flue gas
P1With temperature t1', look into and take by bibliography in NB/T47066-2018；
hv.fg.2Vapor (gaseous state) enthalpy in-exiting flue gas, kJ/kg, according to import water vapour pressure in exiting flue gas
P2With temperature t2', look into and take by bibliography in NB/T47066-2018.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of supersaturation flue gas condenser thermal property measuring system, which is characterized in that for single condenser (1) or
The multiple condensers (2) being sequentially connected in series measure；It include: test platform ontology (2), flue (3), working medium pipeline
(4), flue gas measurement module (5) and working medium measurement module (6)；
The test platform ontology (2) generates flue gas by burner (7) burning, and for flue gas output and working medium reflux；
Described flue (3) one end is connected to the flue gas output end of the test platform ontology (2), the other end and single described
Condenser (1) connection, or be sequentially connected in series and be connected to multiple condensers (1)；
The working medium pipeline (4) for give the condenser (1) convey liquid working substance, and with the test platform ontology (2)
Working medium reflux end connection；
The quantity of the flue gas measurement module (5) is multiple, and is connected to the flue (3), the flue gas measurement module
(5) it is arranged in gas inlet and the outlet of each condenser (1), is shared between the every two adjacent condenser (1)
One flue gas measurement module (5), and temperature, pressure, ingredient and water capacity for measuring flue gas；
The working medium measurement module (6) is connected to the working medium pipeline (4), and be arranged in the working medium pipeline (4) into
Mouth and outlet, the working medium measurement module (6) are used to measure the temperature, pressure and flow of liquid working substance.
2. a kind of supersaturated flue gas condenser thermal property measuring system according to claim 1, which is characterized in that described
Flue gas measurement module (5) includes: the temperature sensor for measuring flue-gas temperature, and standard uncertainty is no more than 0.5%, is used for
The pressure sensor of flue gas pressures is measured, standard uncertainty is no more than the 0.5%, smoke components point for measuring smoke components
Analyzer, O2、CO2Standard uncertainty is no more than 0.5%, and CO, NOx standard uncertainty are no more than 2.5%, and for measuring
The water capacity tester of humidity of flue gas, standard uncertainty are no more than 1.0%.
3. a kind of supersaturated flue gas condenser thermal property measuring system according to claim 1, which is characterized in that described
Working medium measurement module (6) includes: the temperature sensor for surveying Temperature of Working, and standard uncertainty is no more than 0.5%, for surveying
The pressure sensor of power pressure is measured, standard uncertainty is no more than 0.2%, the flowmeter for measuring working medium flow, standard
Uncertainty is no more than 2.0%.
4. a kind of supersaturated flue gas condenser thermal property measuring system according to claim 1, which is characterized in that described
The inlet temperature of flue (3) controls between 100 DEG C -200 DEG C.
5. a kind of supersaturated flue gas condenser thermal property measuring system according to claim 1, which is characterized in that described
Dry flue gas flow in flue (3) and the wet flue gas flow before not condensing, pass through NB/ after flame combustion
T47066-2018 " condensing boiler Thermal Performance Test method " is calculated；Smoke moisture passes through NB/T47066-2018 " condensation
Boiler thermal technology method for testing performance " Appendix B measurement obtains.
6. a kind of supersaturated flue gas condenser thermal property measurement method according to claim 1-5, feature
It is:
Condenser efficiency level=working medium side inputs heat/fume side quantity of heat given up × 100%；
Wherein:
Working medium side input heat=leave the working medium heat-of condenser into the working medium heat of condenser；
Fume side quantity of heat given up=dry flue gas releases vapor condensation release in heat+flue gas and vaporizes gas in latent heat+flue gas
State medium releases heat；
By changing the flue-gas temperature of flue entrance, it is capable of forming condenser efficiency assessment of levels curve.
7. a kind of supersaturated flue gas condenser thermal property measurement method according to claim 7, which is characterized in that dry cigarette
The exothermic calculation formula of gas are as follows:
In formula:
Qd.fg- dry flue gas releases heat, kJ；
- dry flue gas corresponds to the density under inlet temperature t1, import total pressure p1, kg/m3；
Vd.fg- dry flue gas volume, m3；
The import average specific heat at constant pressure of-dry flue gas holds, kJ/ (kg DEG C)；
t1- inlet temperature, DEG C；
- dry flue gas corresponds to the density under outlet temperature t2, outlet total pressure p2, kg/m3；
The outlet average specific heat at constant pressure of-dry flue gas holds, kJ/ (kg DEG C).
8. a kind of supersaturated flue gas condenser thermal property measurement method according to claim 7, which is characterized in that flue gas
The calculation formula of middle vapor condensation release vaporization latent heat are as follows:
In formula:
Qd.fgVapor condensation release heat, kJ in-flue gas；
Vapor averag density, kg/m3 in-flue gas；
Vcond.fg.1Vapor volume in-import flue gas, m3；
Vcond.fg.2Vapor volume, m3 in-exiting flue gas；
γcond- steam gasification latent heat, kJ/ (kg DEG C).
9. a kind of supersaturated flue gas condenser thermal property measurement method according to claim 7, which is characterized in that flue gas
The middle exothermic calculation formula of gaseous medium are as follows:
Qv.fg=ρv.fgVcond.fg.2(hv.fg.1-hv.fg.2)；
Qv.fgVapor (gaseous state) discharges heat, kJ in-flue gas；
ρv.fgVapor averag density, kg/m3 in-flue gas；
hv.fg.1Vapor (gaseous state) enthalpy, kJ/kg in-import flue gas；
hv.fg.2Vapor (gaseous state) enthalpy, kJ/kg in-exiting flue gas.
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