CN105465868A - Waste heat energy-saving heat supply system of thermal power plant - Google Patents
Waste heat energy-saving heat supply system of thermal power plant Download PDFInfo
- Publication number
- CN105465868A CN105465868A CN201510870558.XA CN201510870558A CN105465868A CN 105465868 A CN105465868 A CN 105465868A CN 201510870558 A CN201510870558 A CN 201510870558A CN 105465868 A CN105465868 A CN 105465868A
- Authority
- CN
- China
- Prior art keywords
- heat
- power plant
- steam power
- waste heat
- exchange station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a waste heat energy-saving heat supply system and energy-saving heat supply method of a thermal power plant. The waste heat energy-saving heat supply system of the thermal power plant comprises N heat exchange stations, N heat pumps and a digital control module. A first water supply pipe of each heat exchange station is connected with a thermal power plant waste heat water supply pipe, and a first water returning pipe of each heat exchange station is connected with a thermal power plant waste heat water returning pipe; the nth heat pump is correspondingly arranged on the nth heat exchange station; and if the water supply temperature of the nth heat exchange station descends and is smaller than a preset temperature value, the digital control module controls the nth heat pump to raise the water supply temperature according to the water returning temperature of the first water returning pipe of the nth heat exchange station. According to the technical scheme, the heat-supply-quality target rate can be improved, energy waste is reduced, and numerical control heat supply is achieved.
Description
Technical field
The disclosure relates to steam power plant's technical field of waste heat utilization, is specifically related to a kind of steam power plant afterheat energy-saving heating system and steam power plant's afterheat energy-saving heat supply method.
Background technology
Cogeneration of heat and power is a kind of heat-supplying mode efficiently.Current steam power plant produces steam by energy heats, and Steam Actuation steam turbine rotates cutting magnetic induction line and generates electricity.But the efficiency of heat energy power-generating is lower, approximately only have about 40%, the heat energy of about 60% is still had not to be utilized by the steam of steam turbine, but directly pass into condenser liquefaction transfer heat to cooling water, and then by cooling water by heat loss in external environment, cause the waste of waste heat.
For economize energy, protection of the environment; utilize the waste heat of above-mentioned waste; in prior art, a kind of scheme is; the cooling water carrying steam power plant's waste heat is transported to urban district heat exchange station; utilize the heat of cooling water that the water of heat supply network is heated to suitable temperature; and then by heat supply network, heat supply is carried out to a terminal (such as the user side of heat exchange station side), steam power plant's waste heat is utilized again.
But steam power plant is because the odjective cause of producing, and generated energy restriction heating load, control technology falls behind, and quantization control method is blank, causes uncontrollable heating load, energy waste during meteorological temperature height, gives short weight when meteorological temperature is low.Such as, the steam power plant of the prior art waste heat for supplying energy consumption index same industry is higher, there is serious energy waste problem.
Summary of the invention
Object of the present disclosure is to provide a kind of steam power plant waste heat for supplying system, for overcoming at least to a certain extent due to the restriction of correlation technique and defect and the one or more problems caused.
Other characteristics of the present disclosure and advantage become obvious by by detailed description below, or the acquistion partially by practice of the present disclosure.
According to one side of the present disclosure, a kind of steam power plant waste heat for supplying system is provided, comprises:
N number of heat exchange station, the first feed pipe of heat exchange station described in each is connected with steam power plant waste heat feed pipe, and the first return pipe of heat exchange station described in each is connected with steam power plant waste heat return pipe;
N number of heat pump; N-th heat pump correspondence is located at heat exchange station described in n-th;
Digital control module; If the supply water temperature of the n-th heat exchange station decrease beyond preset temperature value, then digital control module controls the n-th heat pump according to the return water temperature of the second return pipe of the n-th heat exchange station and promotes supply water temperature.
In a kind of exemplary embodiment of the present disclosure, described digital control module also for, control each described heat pump and work in coordination to ensure as far as possible that the return water temperature of described steam power plant waste heat return pipe is a steady temperature.
In a kind of exemplary embodiment of the present disclosure, described digital control module also for, after the supply water temperature of each described heat exchange station all meets standard, control described heat pump the water supply heat of the first feed pipe of described heat exchange station is stored, to ensure that the return water temperature of described steam power plant waste heat return pipe is a steady temperature as far as possible.
In a kind of exemplary embodiment of the present disclosure, described steam power plant waste heat for supplying system also comprises:
N number of circulating pump, respectively corresponding be located at N number of described heat exchange station the second feed pipe and the second return pipe between;
Circulating pump control module, for stopping the operation of each described circulating pump during carrying out accumulation of heat at described digital control module.
In a kind of exemplary embodiment of the present disclosure, if reach pipe network accumulation of heat safety value, then described digital control module stops the operation of each described heat pump, and described circulating pump control module starts described N number of circulating pump in batches.
In a kind of exemplary embodiment of the present disclosure, described preset temperature value
wherein, T
0for preset temperature value, T
nit is the supply water temperature of the second feed pipe of the n-th heat exchange station.
In a kind of exemplary embodiment of the present disclosure, Heating Period comprises first cold phase that temperature reduces successively, syncope due to pathogenic cold phase and algid stage; Wherein, the duration that the phase of just trembling with fear opens described heat pump is T1, and the duration that the syncope due to pathogenic cold phase opens described heat pump is T2, and the duration that algid stage opens described heat pump is T3; Wherein, 0≤T1≤T2≤T3.
In a kind of exemplary embodiment of the present disclosure, described heat pump is numerical control heat pump.
In a kind of exemplary embodiment of the present disclosure, described steady temperature is the temperature value in 20 DEG C ~ 40 DEG C.
In a kind of exemplary embodiment of the present disclosure, described steam power plant waste heat for supplying system also comprises:
Cooling tower, is located at described steam power plant waste heat return pipe, for cooling it when the return water temperature of described steam power plant waste heat return pipe does not drop to described steady temperature.
In steam power plant's waste heat for supplying system that a kind of example embodiment of the present disclosure provides, by arranging digital control module, quantified controlling is targetedly carried out to the heat conversion of the heat pump of each heat exchange station and the opening and closing of circulating pump, heating quality compliance rate can be improved on the one hand, reduce the waste of the energy, realize numerical control heat supply, steam power plant's waste heat for supplying can be avoided on the other hand to occur the phenomenon of short weight, the wearing and tearing of equipment can also be reduced simultaneously.
Accompanying drawing explanation
Accompanying drawing to be herein merged in description and to form the part of this description, shows embodiment according to the invention, and is used from description one and explains principle of the present invention.Apparently, the accompanying drawing in the following describes is only embodiments more of the present disclosure, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of steam power plant waste heat for supplying system in example embodiment.
description of reference numerals
11 steam power plants
21 steam power plant's waste heat feed pipes
22 steam power plant's waste heat return pipes
23 second circulating pumps
24 cooling towers
31 heat exchange stations
32 heat pumps
First feed pipe of 33 heat exchange stations
First return pipe of 34 heat exchange stations
Second feed pipe of 41 heat exchange stations
Second return pipe of 42 heat exchange stations
43 first circulating pumps
44 terminals
51 digital control modules
Detailed description of the invention
More fully example embodiment is described referring now to accompanying drawing.But example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, these embodiments are provided to make the disclosure comprehensively with complete, and the design of example embodiment will be conveyed to those skilled in the art all sidedly.In the drawings, in order to clear, exaggerate the thickness of region and layer.Reference numeral identical in the drawings represents same or similar structure, thus will omit their detailed description.
In addition, described feature, structure or characteristic can be combined in one or more embodiment in any suitable manner.In the following description, provide many details thus provide fully understanding embodiment of the present disclosure.But, one of skill in the art will appreciate that and can put into practice technical scheme of the present disclosure and not have in described specific detail one or more, or other method, module, structure etc. can be adopted.In other cases, known features, module or operation is not shown specifically or describes to avoid fuzzy each side of the present disclosure.
A kind of steam power plant waste heat for supplying system is provide firstly, for recycling cooling water of thermoelectric plant waste heat in this example embodiment.Shown in figure 1, this waste heat for supplying system mainly comprises heat exchange station 31, heat pump 32 and digital control module 51, can comprise the first circulating pump 43, second circulating pump 23 and a terminal 44 etc. in addition.Wherein, the quantity of heat exchange station 31 is multiple, and namely in this example embodiment, the quantity of heat exchange station 31 is N number of, and 1<N.Described steam power plant 11 has cooling water heat feed pipe 21 and cooling water heat return pipe 22, and described heat exchange station 31 has the first feed pipe 33, first return pipe 34, second feed pipe 41 and the second return pipe 42.First feed pipe 33 of the 1st heat exchange station is connected with steam power plant waste heat feed pipe 21, and the first return pipe 34 of the 1st heat exchange station is connected with steam power plant waste heat return pipe 22; First feed pipe 33 of the 2nd heat exchange station is connected with steam power plant waste heat feed pipe 21, first return pipe 34 of the 2nd heat exchange station is connected with steam power plant waste heat return pipe 22 ... first feed pipe 33 of N heat exchange station is connected with steam power plant waste heat feed pipe 21, and the first return pipe 34 of N heat exchange station is connected with steam power plant waste heat return pipe 22.In this example embodiment, described steam power plant waste heat feed pipe 21 and steam power plant's waste heat return pipe 22 can form a loop, N number of described heat exchange station 31 is all connected on this primary Ioops, but those skilled in the art also can select other pipe networks to lay mode as required, do not do particular determination in this example embodiment to this.Wherein the quantity of heat pump 32 is not more than N, such as, comprise N number of heat pump 32, and wherein the n-th heat pump 32 correspondence is located at heat exchange station 31 described in n-th.For the ease of controlling, in this example embodiment, described heat pump 32 can be numerical control heat pump.
Digital control module 51 is mainly used in the quantified controlling realizing waste heat for supplying.Specifically, whether digital control module 51 can exceed preset temperature value according to the decline of the supply water temperature of each heat exchange station 31 and carry out heat supply adjustment, such as, if judge, the supply water temperature of the n-th heat exchange station 31 decrease beyond preset temperature value, then digital control module 51 controls the n-th heat pump 32 according to the return water temperature of the second return pipe 42 of the n-th heat exchange station 31 and promotes supply water temperature.For example, after forming complete set numerical control basic data according to parameters such as steam power plant 11 waste heat for supplying area, meteorological temperature, design heating load, heat exchange station efficiency, building energy consumption index (correcting heating load index) and supply backwater temperature differences, test the temperature of all heat exchange stations 31 water supply networks (the second feed pipe 41 of heat exchange station 31 and the second return pipe 42 of heat exchange station 31), find temperature to decrease beyond the heat exchange station 31 of preset temperature value.In this example embodiment, described preset temperature value can be a fixed numbers, also can be the numerical value of a dynamic conditioning.Such as, in this example embodiment, described preset temperature value can be
wherein, T
0for preset temperature value, T
nbe the supply water temperature of the second feed pipe 41 of the n-th heat exchange station 31, namely preset temperature value can be the mean temperature point of each heat exchange station 31.
In order to meet the requirement of steam power plant 11 steady operation, in this example embodiment, described digital control module 51 also works in coordination to ensure as far as possible that the return water temperature of described steam power plant waste heat return pipe 22 is a steady temperature for controlling each described heat pump 32.Such as, constant temperature is that steam power plant 11 steady operation requirement is (certain at about 35 DEG C, in other exemplary embodiments of the present disclosure, also can according to each steam power plant 11 specific requirement determination steady temperature standard, as 20 DEG C ~ 40 DEG C etc.), then can ensure that the return water temperature constant temperature of steam power plant's waste heat return pipe 22 is at about 35 DEG C at control heat pump 32.In order to avoid thermal waste further, in this example embodiment, described digital control module 51 is also for after the supply water temperature of each described heat exchange station 31 all meets standard, control described heat pump 32 the water supply heat of the first feed pipe 41 of described heat exchange station 31 is stored, to ensure that the return water temperature of described steam power plant waste heat return pipe 22 is a steady temperature and just utilizes the heat energy stored when needed as far as possible.Such as, described steam power plant 11 waste heat for supplying system also comprises N number of first circulating pump 43 and circulating pump control module, and N number of first circulating pump 43 is corresponding to be respectively located between the second feed pipe 41 of N number of described heat exchange station 31 and the second return pipe 42.Circulating pump control module then can stop the operation of each described first circulating pump 43 during carrying out accumulation of heat, opens heat pump 32; (pipe network accumulation of heat safety value is such as reached) when pipe network temperature reaches accumulation of heat requirement, stop the operation of each described heat pump 32, divide several batches of the 1st of opening N number of heat exchange stations 31 to N number of first circulating pump 41 heat supply, reduce circulating pump power consumption, thus reach energy-conservation object.In this example embodiment, described circulating pump control module can be integrated in described digital control module 54, also can arrange separately.In addition, continue with reference to shown in figure 1, in this example embodiment, described steam power plant 11 waste heat for supplying system can also comprise a cooling tower 24, described steam power plant waste heat return pipe 22 is located at by cooling tower 24, for cooling it when the return water temperature of described steam power plant waste heat return pipe 22 does not drop to described steady temperature, thus guarantee to meet steam power plant 11 steady operation requirement.
In prior art, the concrete heat supply for each stage of Heating Period does not carry out conservative control.In this example embodiment, each Heating Period is divided into heat supply just cold phase, syncope due to pathogenic cold phase and algid stage, just the temperature of cold phase, syncope due to pathogenic cold phase and algid stage reduces successively and respectively accounts for the heating time 1/3 (as shown in table 1), and then, conservative control is carried out in concrete heat supply for each stage of Heating Period, and such as, the duration that the phase of just trembling with fear opens described heat pump 32 is T1, the duration that the syncope due to pathogenic cold phase opens described heat pump 32 is T2, and the duration that algid stage opens described heat pump 32 is T3; Wherein, 0≤T1≤T2≤T3; For example, just the cold phase does not need to open heat pump 32 in heat supply, and namely T1 is 0; The heat supply syncope due to pathogenic cold phase needs the short time to open heat pump 32, and heat supply algid stage needs long-time unlatching heat pump 32 etc.But those skilled in the art are it is easily understood that in other exemplary embodiments of the present disclosure, and each Heating Period also can carry out other forms of divided stages, not to be limited in this example embodiment.
Table 1. heating just the cold phase, the syncope due to pathogenic cold phase, algid stage timetable
Below for 1,000,000 square meter area of heat-supply service founding mathematical models:
Table 2. is the cold phase just, Q=cm (t2-t1), flow 600t/h
| Return water temperature DEG C | 59 | 58 | 57 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | Add up to |
| The temperature difference | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| Extract heat GJ | 2.52 | 5.04 | 7.56 | 10.08 | 12.6 | 15.12 | 17.64 | 20.16 | 22.68 | 25.2 | 138.6 |
| 60 DEG C of heats | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 |
| Extract % | 0.01 | 0.03 | 0.04 | 0.06 | 0.07 | 0.09 | 0.10 | 0.11 | 0.13 | 0.14 | 0.79 |
The table 3. syncope due to pathogenic cold phase, Q=cm (t2-t1), flow 600t/h
| Return water temperature DEG C | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | Add up to |
| The temperature difference | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | |
| Extract heat GJ | 27.72 | 30.24 | 32.76 | 35.28 | 37.8 | 40.32 | 42.84 | 45.36 | 47.88 | 50.4 | 390.6 |
| 60 DEG C of heats | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 |
| Extract % | 0.18 | 0.20 | 0.22 | 0.23 | 0.25 | 0.27 | 0.28 | 0.30 | 0.32 | 0.33 | 2.58 |
Table 4. algid stage, Q=cm (t2-t1), flow 600t/h
| Return water temperature DEG C | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 | 31 | 30 | Add up to |
| The temperature difference | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
| Extract heat GJ | 52.92 | 55.44 | 57.96 | 60.48 | 63 | 65.52 | 68.04 | 70.56 | 73.08 | 75.6 | 642.6 |
| 60 DEG C of heats | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 | 151.2 |
| Extract % | 0.35 | 0.37 | 0.38 | 0.40 | 0.42 | 0.43 | 0.45 | 0.47 | 0.48 | 0.50 | 4.25 |
Can be found out by above mathematics model analysis, the heating load of steam power plant's waste heat for supplying is stablized to adopt the steam power plant's waste heat for supplying system in this example embodiment to ensure, maximumly utilizes heat energy.Adopt steam power plant's waste heat for supplying system in this example embodiment on average to save percent of calories to be about:
(7.9％+25.8％+42.5％)/3＝25.4％。
Below table 5 ~ table 8 for area of heat-supply service be 1,000,000 square meters, the flow velocity under different pipe network length and the Mathematical Modeling of time relationship.
Table 5. area of heat-supply service 1,000,000 square meter, pipe network length 1km
Table 6. area of heat-supply service 1,000,000 square meter, pipe network length 2km
Table 7. area of heat-supply service 1,000,000 square meter, pipe network length 3km
Table 8. area of heat-supply service 1,000,000 square meter, pipe network length 4km
Analytical table 5 ~ table 8, as shown in table 9, can find out that each heat pump needs 1.295 hour working time:
The table 9. heat pump working time
| Pipe network length | Total ascent time | 10 kinds of operating mode average times | Each average time h |
| 1km | 4.1 | ||
| 2km | 7.1 | ||
| 3km | 16.3 | ||
| 4km | 24.3 | ||
| Average time h | 51.8 | 5.18 | 1.295 |
Table 10. 1,000,000 square meter heat exchange station all circulating pumps power consumption every day:
| Heat exchange station | 1# | 2# | 3# | 4# | 5# | 6# | 7# | 8# | 9# | 10# |
| Power KWh | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Day power consumption | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 |
Can obtain adding up to power consumption 24000kwh every day by table 10, if adjust 6 every day, ten thousand square meter using electricity wisely: 100 × 10 × 6 × 1=6000kwh, power saving rate: 6000kwh ÷ 24000kwh=25%; Can learning further, by opening heat exchange station circulating pump in batches in this example embodiment, heating quality compliance rate can be improved, reduce the waste of the energy, realize numerical control heat supply, and reduce equipment attrition, extension device service life.
The disclosure is described by above-mentioned related embodiment, but above-described embodiment is only enforcement example of the present disclosure.Must it is noted that the embodiment disclosed limit the scope of the present disclosure.On the contrary, not departing from the change and retouching done in spirit and scope of the present disclosure, scope of patent protection of the present disclosure is all belonged to.
Claims (10)
1. steam power plant's afterheat energy-saving heating system, is characterized in that, comprising:
N number of heat exchange station, the first feed pipe of heat exchange station described in each is connected with steam power plant waste heat feed pipe, and the first return pipe of heat exchange station described in each is connected with steam power plant waste heat return pipe;
N number of heat pump; N-th heat pump correspondence is located at heat exchange station described in n-th;
Digital control module; If the supply water temperature of the n-th heat exchange station decrease beyond preset temperature value, then digital control module controls the n-th heat pump according to the return water temperature of the second return pipe of the n-th heat exchange station and promotes supply water temperature.
2. steam power plant according to claim 1 waste heat for supplying system, is characterized in that, described digital control module also for, control each described heat pump and work in coordination to ensure as far as possible that the return water temperature of described steam power plant waste heat return pipe is a steady temperature.
3. steam power plant according to claim 1 and 2 waste heat for supplying system, it is characterized in that, described digital control module also for, after the supply water temperature of each described heat exchange station all meets standard, control described heat pump the water supply heat of the first feed pipe of described heat exchange station is stored, to ensure that the return water temperature of described steam power plant waste heat return pipe is a steady temperature as far as possible.
4. steam power plant according to claim 3 waste heat for supplying system, is characterized in that, described steam power plant waste heat for supplying system also comprises:
N number of circulating pump, respectively corresponding be located at N number of described heat exchange station the second feed pipe and the second return pipe between;
Circulating pump control module, for stopping the operation of each described circulating pump during carrying out accumulation of heat at described digital control module.
5. steam power plant according to claim 4 waste heat for supplying system, is characterized in that, if reach pipe network accumulation of heat safety value, then described digital control module stops the operation of each described heat pump, and described circulating pump control module starts described N number of circulating pump in batches.
6. steam power plant according to claim 1 waste heat for supplying system, is characterized in that, described preset temperature value
wherein, T
0for preset temperature value, T
nit is the supply water temperature of the second feed pipe of the n-th heat exchange station.
7. the steam power plant's waste heat for supplying system according to claim 1-2 or 4-6 any one, is characterized in that, Heating Period comprises first cold phase that temperature reduces successively, syncope due to pathogenic cold phase and algid stage; Wherein, the duration that the phase of just trembling with fear opens described heat pump is T1, and the duration that the syncope due to pathogenic cold phase opens described heat pump is T2, and the duration that algid stage opens described heat pump is T3; Wherein, 0≤T1≤T2≤T3.
8. the steam power plant's waste heat for supplying system according to claim 1-2 or 4-6 any one, is characterized in that, described heat pump is numerical control heat pump.
9. the steam power plant's waste heat for supplying system according to claim 4 or 5, is characterized in that, described steady temperature is the temperature value in 20 DEG C ~ 40 DEG C.
10. steam power plant according to claim 9 waste heat for supplying system, is characterized in that, described steam power plant waste heat for supplying system also comprises:
Cooling tower, is located at described steam power plant waste heat return pipe, for cooling it when the return water temperature of described steam power plant waste heat return pipe does not drop to described steady temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870558.XA CN105465868B (en) | 2015-12-01 | 2015-12-01 | Steam power plant's afterheat energy-saving heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870558.XA CN105465868B (en) | 2015-12-01 | 2015-12-01 | Steam power plant's afterheat energy-saving heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105465868A true CN105465868A (en) | 2016-04-06 |
| CN105465868B CN105465868B (en) | 2018-08-14 |
Family
ID=55603849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510870558.XA Active CN105465868B (en) | 2015-12-01 | 2015-12-01 | Steam power plant's afterheat energy-saving heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465868B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458401A (en) * | 2018-03-26 | 2018-08-28 | 华电能源股份有限公司富拉尔基发电厂 | Steam power plant's waste heat for supplying real-time monitoring method |
| CN112178736A (en) * | 2020-09-24 | 2021-01-05 | 邢台建德水泥有限公司 | Cement plant waste heat power generation cooling water cyclic utilization system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307577A (en) * | 1980-03-12 | 1981-12-29 | Agency Of Industrial Science & Technology | Air conditioning system making use of waste heat |
| CN1312454A (en) * | 2001-03-22 | 2001-09-12 | 上海交通大学 | Phase change accumulating heat-pump heat supply system |
| CN2903753Y (en) * | 2006-03-01 | 2007-05-23 | 李薇 | Heat pump heat recovering central machine for cooling, heating and bathing |
| CN101012964A (en) * | 2007-01-30 | 2007-08-08 | 江苏天舒电器有限公司 | Household hot pump water heater |
| CN101046326A (en) * | 2006-03-29 | 2007-10-03 | 日立空调·家用电器株式会社 | Heat pump water heater |
| CN101109536A (en) * | 2006-07-17 | 2008-01-23 | 葆光（大连）节能技术研究所有限公司 | Waste heat recovery type thermoelectricity cold jointly-supplying technology |
| CN202008182U (en) * | 2010-12-06 | 2011-10-12 | 张宏伟 | Waste heat recycling, energy saving and heat supply system for cooling water of thermal power plant |
-
2015
- 2015-12-01 CN CN201510870558.XA patent/CN105465868B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307577A (en) * | 1980-03-12 | 1981-12-29 | Agency Of Industrial Science & Technology | Air conditioning system making use of waste heat |
| CN1312454A (en) * | 2001-03-22 | 2001-09-12 | 上海交通大学 | Phase change accumulating heat-pump heat supply system |
| CN2903753Y (en) * | 2006-03-01 | 2007-05-23 | 李薇 | Heat pump heat recovering central machine for cooling, heating and bathing |
| CN101046326A (en) * | 2006-03-29 | 2007-10-03 | 日立空调·家用电器株式会社 | Heat pump water heater |
| CN101109536A (en) * | 2006-07-17 | 2008-01-23 | 葆光（大连）节能技术研究所有限公司 | Waste heat recovery type thermoelectricity cold jointly-supplying technology |
| CN101012964A (en) * | 2007-01-30 | 2007-08-08 | 江苏天舒电器有限公司 | Household hot pump water heater |
| CN202008182U (en) * | 2010-12-06 | 2011-10-12 | 张宏伟 | Waste heat recycling, energy saving and heat supply system for cooling water of thermal power plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458401A (en) * | 2018-03-26 | 2018-08-28 | 华电能源股份有限公司富拉尔基发电厂 | Steam power plant's waste heat for supplying real-time monitoring method |
| CN112178736A (en) * | 2020-09-24 | 2021-01-05 | 邢台建德水泥有限公司 | Cement plant waste heat power generation cooling water cyclic utilization system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105465868B (en) | 2018-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107767074A (en) | A kind of energy projects collocated method of meter and integration requirement resource response | |
| CN108930995B (en) | Central heating system for combined heating of solar energy and low-grade industrial waste heat | |
| CN107918811A (en) | A kind of energy internet construction method for improving efficiency of energy utilization | |
| CN106055773B (en) | In conjunction with the method for building up of the multizone integrated energy system allocation models of heat supply network model | |
| CN102518946A (en) | Energy saving method for cooling water circulation system | |
| US20110245986A1 (en) | System and method for multi-objective management of the electrical and thermal energy generated by a co/trigeneration energy system in a multi-source energy plant | |
| CN102261691A (en) | Power transmission system of multi-heat source loop pipe network, system configuration method and operation mode | |
| Wang et al. | A study of district heating systems with solar thermal based prosumers | |
| RU2483255C1 (en) | Method of seasonal use of low-potential heat of surface soil, and downhole heat exchangers for implementation of method's versions | |
| CN116221802A (en) | Combined heating and cooling system | |
| CN104578183A (en) | Tie-line power transmission plan optimization method for improving low-carbon level of electric system | |
| CN106524277B (en) | Regional energy supply system of heat supply in winter of multipotency source form | |
| CN105465868A (en) | Waste heat energy-saving heat supply system of thermal power plant | |
| CN103471175B (en) | Heat supply energy-saving control system and energy-saving control method | |
| CN209978135U (en) | Heat supply system | |
| CN113065249A (en) | Method and device for predicting supply and return water temperature of heating system | |
| CN111656098B (en) | Method for improved utilization of an energy grid | |
| CN202630237U (en) | Intelligent heating control system | |
| CN109659981B (en) | Multi-time scale trans-regional consumption method considering new energy prediction uncertainty | |
| CN105757782B (en) | The control method and system of heating energy-saving | |
| CN202101306U (en) | Power transmission system of multiple-heat-source looped pipe network | |
| CN114757469B (en) | Regional comprehensive energy system day-ahead optimal scheduling method considering multi-energy flow equipment | |
| CN109886584A (en) | A kind of heat supply network dispatching method and device based on intelligent body | |
| CN202171276U (en) | Stepped heat exchange system of a centralized heat-supply primary heat network according to different heating methods | |
| CN102359732B (en) | Heat supply system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |