CN104482679B - Multiple-energy-source composite hot-water system control method with anticipation computing function - Google Patents
Multiple-energy-source composite hot-water system control method with anticipation computing function Download PDFInfo
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- CN104482679B CN104482679B CN201410641172.7A CN201410641172A CN104482679B CN 104482679 B CN104482679 B CN 104482679B CN 201410641172 A CN201410641172 A CN 201410641172A CN 104482679 B CN104482679 B CN 104482679B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The present invention provide the multiple-energy-source composite hot-water system control method with anticipation computing function, comprising: 1) utilize system-computed a period of time in averagely use heat Q；2) according to weather forecast temperature information, to averagely being revised by heat Q, further according to revised rate of water make-up V and hot temperature T of storage averagely configuring heat storage water tank with heat；3) according to weather forecast information, the heating capacity Q of system-computed sunny energy heat source system is utilizedSolar energy, 4) and utilize the system-computed operation of heat pump time, according to after-heat QResidueCalculate heat time t needed for heat pump, and set water temperature detection time interval t1, the startup time of heat pump is t1T etc..Utilize the multi-heat source composite hot-water system control method with anticipation computing function that the present invention provides, be prevented effectively from heated many water every day, reduce waste, improve thermal source operational efficiency, give full play to the advantage of each thermal source, more energy-conservation.
Description
Technical field
The present invention relates to the control field of hot-water heating system, particularly relate to a kind of multipotency with anticipation computing function
Source composite hot-water system control method.
Background technology
Solar water heater is the water heater of a kind of economy, energy-saving and environmental protection, is widely used in producing and life
Hot water is supplied.But the greatest problem that solar water heater in use exists is, in overcast and rainy heating amount
Not.For solving this problem, the method using at present is with electrical heating wire auxiliary heating, air source heat pump
Water heater auxiliary heating and gas-aided heating.
But, these current multiple-energy-source composite hot-water systems typically can configure heat storage water tank, in order to store system
The hot water got ready, and the design of heat storage water tank volume is usually according to the water consumption per capita recommended in design specification
And it is calculated by water number.But so the volume of the heat storage water tank of design is usually bigger than normal, so
Have led to having every day its heat of exhaustless hot water to lose in vain, cause waste.In addition, multiple-energy-source
Composite hot-water system, when selecting thermal source, is to judge according to current condition, such judgement side
Formula is difficult to reach optimum in thermal source configuration.
Content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, offer one is energy-conservation, convenient, have oneself
Adjust the control method of the intelligent multiple-energy-source composite hot-water system of function.
Multiple-energy-source composite hot-water system control method with anticipation computing function, it is characterised in that include:
1) averagely heat Q is used in utilizing system-computed a period of time；
2) automatically reading weather forecast temperature information, system-computed goes out the changing value T of temperature, and combines use
Family regimen condition, to averagely being revised by heat Q, obtains correction value QRevise；Further according to revised average use
Heat QReviseConfigure rate of water make-up V and hot temperature T of storage of heat storage water tank；
3) according to weather forecast information, the heating capacity Q of system-computed sunny energy heat source system is utilizedSolar energy,
4) the system-computed operation of heat pump time is utilized, according to after-heat QResidueCalculate the heat time needed for heat pump
T, and set water temperature detection time interval t1, the startup time of heat pump is t1-t；
Wherein, QResidue=Q-QSolar energy；T=QResidue/ (P COP), P are heat pump input power；
5) when system is run to setting time t1When, system detects water temperature T in heat storage water tank automatically0Whether between
Interval (the T of the temperature range setting1,T2In), if water temperature T in heat storage water tank0Between the temperature range setting
Interval (T1,T2Between), then start heat pump and heat, reaching to store hot temperature T to water temperature；If
Water temperature T in heat storage water tank0It is not more than the lower limit of the temperature range setting, then start heat pump and gas and hot water simultaneously
Device heats, reaching to store hot temperature T to water temperature.
Further illustrating as such scheme, described a period of time is 2-30 days, with in nearest a period of time
Average use heat standard with heat Q as next day.
Further illustrating as such scheme, in step 3) in, QSolar energyComputational methods be:
First, to make a reference value J with the unit plane day of year amount of radiation mean value of all sunny days in month last yearBenchmark,
N is sunny number of days in this month；
Then, according to the weather condition in weather forecast, with corresponding quantized value a to a reference value JBenchmarkRepair
Just, it is i.e. multiplied by quantized value；
Finally calculate the heating capacity Q of solar heat source systemSolar energy:
QSolar energy=aAJBenchmarkηcd
Wherein, A is solar thermal collector area, ηcdRepresent the collecting efficiency of solar thermal collector.
Further illustrating as such scheme, the computational methods of quantized value a are: initial value takes all last year
The unit plane day of year amount of radiation average of weather and a reference value JBenchmarkRatio, after bringing into operation, inherit initial value
Data, continue to calculate this weather actual day amount of radiation and JBenchmarkRatio, and accumulative be averaged, make a value every day
Update.
Further illustrating as such scheme, actual emanations amount JActualComputational methods be:
JActual=(QAlways-Q1-Q2)/Aηcd
In formula: QAlwaysRepresent total heating amount,
Q1 represents heat pump amount,
Q2 represents water heater heating amount,
ηcdRepresent the collecting efficiency of solar thermal collector,
A is solar thermal collector area.
Further illustrating as such scheme, heat pump starts the time and reaches time of the highest COP value with heat pump
Point t0Replace, first calculate the time point t that heat pump reaches the highest COP value0, in carrying out practically, if t0Value is early
In t1During-t, then reach the time point t of the highest COP value with heat pump0Start the time for heat pump.
Further illustrating as such scheme, described water temperature detects time interval t1According to true with water time point
Fixed, wherein, t1Ratio water time point carry previous little when.
The multiple-energy-source composite hot-water system control method with anticipation computing function that the present invention provides has following
Beneficial effect:
First, rate of water make-up and heat accumulation temperature are controlled according to the water habits in user's nearest a period of time, laminating
Actual use enthusiasm condition, it is to avoid every day heated many water, reduce waste, raising thermal source operational efficiency.
2nd, selection and the startup time of thermal source are judged in advance according to the heat storage water tank water yield and weather forecast, fully
Play the advantage of each thermal source, more energy-conservation.
Brief description
Fig. 1 show the multiple-energy-source composite hot-water system control method flow process with anticipation computing function that the present invention provides
Figure.
Detailed description of the invention
It is more fully understood that the essence of the present invention for convenience of those of ordinary skill in the art, below in conjunction with the accompanying drawings to this
The detailed description of the invention of invention is described in detail.
As it is shown in figure 1, the multiple-energy-source composite hot-water system control method with anticipation computing function, including following
Step:
1st, the average of nearest 7 days (then enchashment had number of days less than 7 days) uses coolant-temperature gage T peace to calculate user
Equal water consumption V, calculates and averagely uses heat Q, and computing formula is as follows:
Wherein, c represents specific heat of water appearance, and ρ represents the density of water.
2nd, systems connection reads weather forecast temperature information automatically, calculates the changing value T of temperature, and combines
User obtains correction value Q by regimen condition to averagely being revised by heat QRevise；Further according to revised averagely
Use heat QReviseConfigure rate of water make-up V and hot temperature T of storage of heat storage water tank.
Wherein, temperature Change value T is with the per day gas of the daily mean temperature in weather forecast and the previous day
The fiducial value of temperature.
It with the concrete modification method of heat Q is averagely: the changing value T according to temperature is scaling up or reduces
Averagely use heat Q.In the present embodiment, temperature often reduces by 1 DEG C, averagely should increase 100kJ with heat.At it
In his embodiment, temperature often reduces by 1 DEG C, and the average correction value of heat is used according to water number and user
Water custom adjusts, and is not limited to the present embodiment.
The configuration mode of rate of water make-up V and hot temperature T of storage is: use hot temperature so that slightly above user is averagely high
Value as hot temperature T of storage, then store hot temperature T with this and revised heat calculates water consumption.This reality
Execute in example,Unit, DEG C.
Certainly, when calculating average heat Q, user can adjust above-mentioned average taking with heat as required
Value number of days, when the rate of water make-up V configuring heat storage water tank and hot temperature T of storage, user also can manually adjust rate of water make-up
The hot temperature with storage.
3rd, the calculating of solar energy service condition judges
Calculating solar energy hot amount, computational methods are: with last year with the unit plane day of year of all sunny days in month
Amount of radiation mean value makees a reference value JBenchmark,
N is sunny number of days in this month.
Last year is with unit plane day of year amount of radiation J of each sunny day in monthSunnyRelated data can be searched in advance and input
In system.If the unit plane day of year amount of radiation of this city last year cannot not check in, then with reference to adjacent cities or latitude
Spend the data in close city.
Followed by with the quantized value a of weather condition to a reference value JBenchmarkIt is modified, be i.e. multiplied by quantized value.
Finally calculate the heating capacity Q of solar heat source systemHeating capacity, QHeating capacityCircular as follows:
QHeating capacity=aAJBenchmarkηcd
Wherein, A is solar thermal collector area, ηcdRepresent the collecting efficiency of solar thermal collector.
The computational methods of quantized value a are: initial value takes the unit plane day of year amount of radiation average of all last year weather
With a reference value JBenchmarkRatio, after bringing into operation, inherit initial value data, continue calculate this weather actual day
Amount of radiation and JBenchmarkRatio, and accumulative be averaged, make a value renewal every day.For example, when running at the beginning of system,
The value of a corresponding to Yin Tian is unit plane day of year amount of radiation average and a reference value J at cloudy day all last yearBenchmark
Ratio, after running 40 days, have ten days cloudy day, then the ensuing cloudy day, corresponding quantized value a just took
The average adding ten days in 1 year, by that analogy.
Actual emanations amount J of certain weatherActualComputational methods be:
JActual=(QAlways-Q1-Q2)/AηcdHere, the total computational methods of total heating amount Q are: record thermal source starts work
Before work, the water temperature T of water tank1With water yield V, the same day water tank hot temperature T of storage；Then formula Q is utilizedAlways=Cp
ρV(T-T1) calculate and can obtain.
Heat pump amount Q1Computational methods be: take the average COP of heat pump, the power consumption of record heat pump on the same day
W, then utilizes formula Q1=W × COP calculates.
Gas heater heating amount Q2Computational methods be: record gas heater average inflow temperature T0
With leaving water temperature TC, mass velocity g, and working time t, then utilize formula Q2=Cpgt(Tc-T0) meter
Calculate.
In other embodiments, if JActualCan directly find, only need to directly inquire about inputting, that
Just need not calculate, be not limited to the present embodiment.
4th, operation of heat pump calculates
First the highest COP value and the correspondence of operation of heat pump is judged according to the temperature information in water temperature and forecast
Time；
Then, with after-heat QResidueWhen (total amount of heat deducts solar energy and obtains heat) calculates heat pump required heating
Between t.
T=QResidue/(P·COP)
Wherein, P is heat pump input power.
Finally carry out heat time distribution: by 18 in afternoon with water as a example by, reach the highest COP value from heat pump
Time point backward, distributes the heat time, and 17 later times do not include computer capacity in, if this time point is extremely
The duration of 17 is less than the required heat time, then the residue heat time distributes forward from this time point.
5th, water tank concurrent heating: when the time is when later, detect water tank water temperature at 17
1) if preset temperature T1＜ water temperature ＜ preset temperature T2When, start heat pump and heat, reach to water temperature
Till storing hot temperature.
2) if water temperature≤preset temperature T1When, start heat pump simultaneously and gas heater heats, to water temperature
Till reaching to store hot temperature.
The Design Thinking of whole system is, depends merely on solar energy as far as possible every day and enabling of air energy heat pump just can be full
Foot user uses heat demand.It is designed to one hour in advance complete heating, allow for theoretical calculating and actual feelings
Condition may have gap, and in last hour, two temperature detects, and is to judge theoretical calculating and actual conditions
Between gap whether can depend merely on heat pump and supply.Such design, is in order to ensure that with heat demand be big
Premise, as far as possible energy-conservation consideration.Certainly, in other embodiments, in last hour, only carry out one
Secondary temperature detection also can, be not limited to the present embodiment.
The essence to the present invention for the above detailed description of the invention has been described in detail, but can not come to this with this
The protection domain of invention limits.It should be evident that under the enlightenment of essence of the present invention, the art
Those of ordinary skill also can carry out many improvement and modification, it should be noted that these improve and modify all to fall
Within the claims of the present invention.
Claims (7)
1. the multiple-energy-source composite hot-water system control method with anticipation computing function, it is characterised in that include:
1) averagely heat Q is used in utilizing system-computed a period of time；
2) automatically reading weather forecast temperature information, system-computed goes out the changing value T of temperature, and combines user's use
Regimen condition, to averagely being revised by heat Q, obtains correction value QRevise；Further according to revised average heat
Amount QReviseConfigure rate of water make-up V and hot temperature T of storage of heat storage water tank；
3) according to weather forecast information, the heating capacity Q of system-computed sunny energy heat source system is utilizedSolar energy,
4) the system-computed operation of heat pump time is utilized, according to after-heat QResidueCalculate heat time t needed for heat pump,
And set water temperature detection time interval t1, the startup time of heat pump is t1-t；
Wherein, QResidue=Q-QSolar energy；T=QResidue/ (P COP), P are heat pump input power；
5) when system is run to setting time t1When, system detects water temperature T in heat storage water tank automatically0Whether between setting
Interval (the T of fixed temperature range1,T2In), if water temperature T in heat storage water tank0Between the temperature range district setting
Between (T1,T2Between), then start heat pump and heat, reaching to store hot temperature T to water temperature；If storage
Water temperature T in boiler0It is not more than the lower limit of the temperature range setting, then start heat pump and gas heater simultaneously
Heat, reaching to store hot temperature T to water temperature.
2. the multiple-energy-source composite hot-water system control method with anticipation computing function according to claim 1,
It is characterized in that, described a period of time is 2-30 days, makees with the average heat Q of using in nearest a period of time
Use heat standard for next day.
3. the multiple-energy-source composite hot-water system control method with anticipation computing function according to claim 1, its
It is characterised by, in step 3) in, QSolar energyComputational methods be:
First, to make a reference value J with the unit plane day of year amount of radiation mean value of all sunny days in month last yearBenchmark,
N is sunny number of days in this month；
Then, according to the weather condition in weather forecast, with corresponding quantized value a to a reference value JBenchmarkIt is modified,
It is i.e. multiplied by quantized value；
Finally calculate the heating capacity Q of solar heat source systemSolar energy:
QSolar energy=aAJBenchmarkηcd
Wherein, A is solar thermal collector area, ηcdRepresent the collecting efficiency of solar thermal collector.
4. the multiple-energy-source composite hot-water system control method with anticipation computing function according to claim 3, its
Being characterised by, the computational methods of quantized value a are: initial value takes the unit plane day of year radiation of all last year weather
Amount average and a reference value JBenchmarkRatio, after bringing into operation, inherit initial value data, continue calculate this weather
Actual day amount of radiation and JBenchmarkRatio, and accumulative be averaged, make a value renewal every day.
5. the multiple-energy-source composite hot-water system control method with anticipation computing function according to claim 4, its
It is characterised by, actual emanations amount JActualComputational methods be:
JActual=(QAlways-Q1-Q2)/Aηcd
In formula: QAlwaysRepresent total heating amount,
Q1 represents heat pump amount,
Q2 represents water heater heating amount,
ηcdRepresent the collecting efficiency of solar thermal collector,
A is solar thermal collector area.
6. the multiple-energy-source composite hot-water system control method with anticipation computing function according to claim 1,
It is characterized in that, the heat pump startup time reaches the time point t of the highest COP value with heat pump0Replace, first calculate
Heat pump reaches the time point t of the highest COP value0, in carrying out practically, if t0Value is early than t1During-t, then with
Heat pump reaches the time point t of the highest COP value0Start the time for heat pump.
7. the multiple-energy-source composite hot-water system control method with anticipation computing function according to claim 1,
It is characterized in that, described water temperature detects time interval t1Determine according to water time point, wherein, t1Ratio water
Time point puies forward previous hour.
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| CN105737410B (en) * | 2016-03-17 | 2017-12-05 | 广西大学 | Intelligent solar hot-water heating system and control method |
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| JP5343867B2 (en) * | 2010-01-12 | 2013-11-13 | 株式会社デンソー | Hybrid water heater |
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| US9157634B2 (en) * | 2011-08-30 | 2015-10-13 | Wacker Neuson Production Americas, LLC | Indirect fired heater with inline fuel heater |
| CN102967001B (en) * | 2012-11-28 | 2015-04-01 | 无锡中自能源科技有限公司 | System for real-time control air source heat pump assisted solar central hot water supply |
| CN104101102B (en) * | 2013-08-27 | 2017-02-01 | 芜湖美的厨卫电器制造有限公司 | Water heater and control system and control method for same |
| CN104121703B (en) * | 2014-08-01 | 2017-01-18 | 江苏天舒电器股份有限公司 | Method and device for controlling direct heat type double-source heat pump water heater |
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Effective date of registration: 20170510 Address after: 528425 Guangdong city of Zhongshan province Dong Feng Zhen Dong Fu Road No. 68 4 floor Patentee after: Guangdong wanxinda Electronics Technology Co., Ltd. Address before: 528333 Guangdong province Foshan city Shunde District Daliang Shunfengshan Industrial Zone Patentee before: Guangdong Wanjiale Gas Burning Appliance Co., Ltd. |