CN108592140A - The system for reducing return water temperature of heat supply pipeline - Google Patents
The system for reducing return water temperature of heat supply pipeline Download PDFInfo
- Publication number
- CN108592140A CN108592140A CN201810433668.3A CN201810433668A CN108592140A CN 108592140 A CN108592140 A CN 108592140A CN 201810433668 A CN201810433668 A CN 201810433668A CN 108592140 A CN108592140 A CN 108592140A
- Authority
- CN
- China
- Prior art keywords
- heat
- accumulation
- module
- return water
- primary side
- 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
-
- 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/13—Heat from a district heating network
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
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)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The system for reducing return water temperature of heat supply pipeline, it is characterised in that：The system includes heat source (1), heat pump (2) and accumulation of heat module (3), and secondary side is transferred to for digesting and assimilating the interference of secondary side load fluctuation, realizing the even running of heating system in the return water temperature of primary side absorption heat reduction primary side, again by the heat absorbed.The means being combined with accumulation of heat using heat pump enhance adaptive performance, the simplify control flow of heating system, realize efficient, low cost operation heating system.
Description
Technical field
The present invention relates to a kind of means being combined with accumulation of heat using heat pump, enhance adaptive performance, the letter of heating system
Change control flow, realizes efficient, low cost operation heating system, belong to the technical field of heating system design and control.
Background technology
Central heating system is realized " the big temperature difference, small flow " by reducing return water temperature, increasing supply backwater temperature difference
Economic operation model, for reducing pipe network transmission ＆ distribution energy consumption, enhancing heat supply ability, reducing system investments, improve to concentrate and supply
Heat-economy suffers from important meaning.
101629733 B of Chinese patent CN disclose a kind of profit in " a method of reduce return water temperature of heat supply pipeline "
The method for reducing return water temperature of heat supply pipeline with absorption heat pump/refrigeration machine, the method still have some problems：
1. the structure of absorption heat pump is more complicated, system investments are higher；
2. this method is only applicable to heat exchange station system, the household products of miniaturization cannot be designed as and used for terminal user.
Invention content
To solve the problems, such as existing central heating system, the technical scheme is that, by heat pump techniques and accumulation of heat skill
Art combines, as the auxiliary conditioning unit of central heating system, can not only reduce the return water temperature of heat supplying pipeline, and can
With the fluctuation of thermic load in absorption system, realize peak load shifting.The system includes heat source 1, heat pump 2 and accumulation of heat module 3, primary
Side, which absorbs heat, to be reduced the return water temperature of primary side, the heat absorbed is transferred to secondary side for digesting and assimilating secondary side again
The interference of load fluctuation, the even running for realizing heating system, concrete scheme includes following three kinds of schemes, and three kinds of schemes can below
Independently to use or be applied in combination：
Scheme one：The system includes heat pump 2 and accumulation of heat module 3, and evaporator E0 and condenser C0, accumulation of heat are included at least in heat pump 2
Heat storage, First Heat Exchanger E1, the second heat exchanger E2 are included at least in module 3；The evaporator E0 of heat pump 2 is arranged in primary side
Backwater section, the condenser C0 of heat pump 2 connect to form circulation loop with the First Heat Exchanger E1 of accumulation of heat module 3, and heat pump 2 is with primary side
Return water be low level heat energy to the heat storage additional heat of accumulation of heat module 3 and the return water temperature of primary side reduced；Accumulation of heat mould
Second heat exchanger E2 settings of block 3 absorb secondary side load fluctuation by accumulation of heat module 3, realize peak load shifting in secondary side；When
Secondary side is in peak hours, the inlet segment of secondary side or backwater section are connected to the second heat exchanger E2 of accumulation of heat module 3, by
Water inlet or return water of the heat storage of accumulation of heat module 3 as auxiliary heating source for heating secondary side；It, will when secondary side load at a low ebb
Second heat exchanger E2 of accumulation of heat module 3 is set as off-state.The program is primarily adapted for use in heat exchange station system.
Scheme two：The system includes heat pump 2 and accumulation of heat module 3, and evaporator E0 and condenser C0 is included at least in heat pump 2,
Heat storage, First Heat Exchanger E1, the second heat exchanger E2, third heat exchanger E3 are included at least in accumulation of heat module 3；Accumulation of heat module 3
Third heat exchanger E3 be arranged primary side into water return loop, the evaporator E0 of heat pump 2 backwater section in primary side, heat are set
The condenser C0 of pump 2 connect to form circulation loop with the First Heat Exchanger E1 of accumulation of heat module 3；Primary side is intake or return water is logical first
The third heat exchanger E3 progress heat exchanges for crossing accumulation of heat module 3 absorb heat, to reduce the return water temperature of primary side by heat storage,
Primary side return water after cooling is again by the evaporator E0 of heat pump 2, heat pump 2 using the return water of the primary side after cooling as low level heat energy
Heat storage additional heat to accumulation of heat module 3 and the return water temperature for further decreasing primary side, the second heat exchange of accumulation of heat module 3
Device E2 settings absorb secondary side load fluctuation in secondary side, by accumulation of heat module 3, realize peak load shifting；When secondary side is in height
When peak load, the backwater section of secondary side is connected to the second heat exchanger E2 of accumulation of heat module 3, made by the heat storage of accumulation of heat module 3
For the return water of auxiliary heating source for heating secondary side；When secondary side load at a low ebb, the second heat exchanger E2 of accumulation of heat module 3 is set
It is set to off-state.The program is primarily adapted for use in heat exchange station system.
Scheme three：The system includes heat pump 2 and accumulation of heat module 3, and evaporator E0 and condenser C0 is included at least in heat pump 2,
Heat storage, First Heat Exchanger E1, the second heat exchanger E2 are included at least in accumulation of heat module 3；Second heat exchanger E2 of accumulation of heat module 3 is set
It sets in the backwater section of primary side, by absorbing heat by heat storage with the progress heat exchange of the return water of primary side, reducing primary side
Return water temperature；The condenser C0 settings of heat pump 2 are in secondary side, the evaporator E0 of the heat pump 2 and First Heat Exchanger E1 of accumulation of heat module 3
Connection forms circulation loop；Secondary side load fluctuation is absorbed by heat pump 2, realizes peak load shifting；When secondary side is negative in peak
When lotus or primary side heat source disconnect, the inlet segment of secondary side or backwater section are connected to the condenser C0 of heat pump 2, heat pump 2 is to store
Thermal modules 3 are that low level heat energy heats the water inlet of secondary side or return water, and heat is provided for secondary side；When secondary side is in low
When paddy load, heat pump 2 is out of service.The program is primarily adapted for use in the domestic system of terminal user.
Wherein, heat pump 2 is compression heat pump or absorption heat pump, preferentially uses compression heat pump.When using compression type heat
When pump, since the low level heat energy of heat pump 2 is primary side return water or accumulation of heat module 3, energy grade is moderate, stability is good, therefore heat
The Energy Efficiency Ratio of pump 2 is very high, and cycle performance coefficient COP (Coefficient of Performance) value can accomplish to be more than 6.
Wherein, the heat storage in accumulation of heat module 3 is sensible heat heat-storing material or phase change heat storage material, can when using sensible heat accumulation of heat
Use hot water storage tank etc..Since phase change heat storage material heat absorption/exothermic temperature is constant, heat transfer temperature difference is small, the storage of accumulation of heat module 3
Hot body preferentially uses phase change heat storage material.
Wherein, preferential to select to secondary side when heating water inlet or the return water of secondary side using heat pump 2 or accumulation of heat module 3
The scheme that is heated of return water, the amplitude that heat pump 2 promotes heat quality can be reduced in this way, to improve the efficiency of heat pump 2.
The beneficial effects of the invention are as follows：
1, the Energy Efficiency Ratio of heat pump 2 is very high, and the main heat exchanging process of primary/electrical secondary system is still using heat exchange or the knot of mixed water
Structure, heat pump 2 only need to handle primary side into the temperature difference increases the heat corresponding to part on the basis of existing system in backwater temperature difference,
Generally system gross heat input 1/3 or so, therefore the overall electric energy energy consumption of heat pump 2 is relatively low；
2, when scheme three is applied to the domestic system of terminal user, the regulating power of terminal user can be enhanced, solve terminal use
The problem of family capacity of self-regulation difference reduces the difficulty of regulating of heating net, improves the comfort level of user and can meet user's winter
Domestic hot-water demand；
3, peak load shifting is realized by accumulation of heat module 3, improves the stability of heating system and is advantageously implemented and promotes " behavior
It is energy saving ".
Description of the drawings
Attached drawing 1：One systematic schematic diagram of scheme
Attached drawing 2：The high load capacity working condition chart of one system of scheme
Attached drawing 3：The running on the lower load figure of one system of scheme
Attached drawing 4：Scheme two system schematic diagram
Attached drawing 5：The high load capacity working condition chart of scheme two system
Attached drawing 6：The running on the lower load figure of scheme two system
Attached drawing 7：Three systematic schematic diagram of scheme
Attached drawing 8：The high load capacity working condition chart of three system of scheme
Attached drawing 9：The running on the lower load figure of three system of scheme
Attached drawing 10：Domestic hot-water's heating structure figure of three system of scheme
Attached drawing 11：The high load capacity working condition chart of one system of scheme（The relatively low situation of corresponding secondary side return water temperature）
In figure：1：Heat source； 5：Once/secondary heat exchange or water admixing device； 6：End system； 7：On-off control valve；
5a：First segment is primary/secondary heat exchange or water admixing device；5b：Second segment is primary/secondary heat exchange or water admixing device；
In trunk circuit, solid arrow direction is system water supply direction, dotted arrow direction is system return direction；Duplexure
Direction is indicated by solid arrow；In attached drawing 10：W1 is domestic water inlet, and W2 is life hot water outlet.
Specific implementation mode
Embodiment 1：
As illustrated in the accompanying drawings from 1 to 3, be heat exchange station system schematic diagram corresponding to scheme one, have chosen in figure a typical operating mode into
Row explanation.
Traditional heat exchange station, the supply water temperature of 1 corresponding primary side of heat source is 110 DEG C, return water temperature is 60 DEG C, primary side
Into backwater temperature difference be 50 DEG C, after primary/secondary heat exchange of heat exchange station or water admixing device 5 carry out heat exchange, end system 6
The supply water temperature of corresponding secondary side is 70 DEG C, return water temperature is 55 DEG C.
Primary side described in the present embodiment corresponds to a heating network in central heating system, the secondary side collection
Secondary heating network in middle heating system carries out heat transfer between primary net and secondary network by heat exchange station.
In the present embodiment, heat pump 2 is compression heat pump, and the heat storage of accumulation of heat module 3 is phase change heat storage material, phase transition temperature
TxIt is chosen to be 60 DEG C.
In the present embodiment, the backwater section in primary side, the condenser C0 of heat pump 2 is arranged in the evaporator E0 of heat pump 2 first
It connect to form circulation loop with the First Heat Exchanger E1 of accumulation of heat module 3, starts heat pump 2 with the return water of primary side（Th1a=60℃）For
Heat storage additional heat of the low level heat energy to accumulation of heat module 3.After evaporator E0 heat exchange coolings, the final return water temperature of primary side
Spend Th1b30 DEG C are dropped to, the output temperature T of the condenser C0 of heat pump 2gcFor 68 DEG C, to after 3 additional heat of accumulation of heat module flow back temperature
Spend ThcIt is 63 DEG C.Heat pump 2 keeps continuously running duty, more heat pump alternate runs may be used to improve the stability of system.
When primary side flow changes, heat pump 2 can do adaptability adjusting by frequency control.
The backwater section in secondary side is arranged in second heat exchanger E2 of accumulation of heat module 3, and accumulation of heat module 3 is intermittent work herein
Make, play the role of peak regulation, be adjusted here by three-way control valve F1, so that secondary side return water fully or partially through
Second heat exchanger E2 of accumulation of heat module 3 carries out heat exchange heating or is passed straight back to without the second heat exchanger E2 primary/secondary
Heat exchange or water admixing device 5.
As shown in Fig. 2, when secondary side is in peak hours, the heat dissipation capacity increase of end system 6, the return water temperature of secondary side
Degree declines（Th2a=50℃）, the backwater section of secondary side is connected to, with the second heat exchanger E2 of accumulation of heat module 3 by accumulation of heat module at this time
3 heat storage is promoted as the return water of auxiliary heating source for heating secondary side, by return water temperature（Th2b=55℃）It returns to afterwards once/bis-
Secondary heat exchange or water admixing device 5.
As shown in figure 3, when secondary side load at a low ebb, the heat dissipation capacity decline of end system 6, the return water temperature of secondary side
Degree is stepped up to 55 DEG C, sets the second heat exchanger E2 of accumulation of heat module 3 to off-state by three-way control valve F1 at this time,
The return water of secondary side is returned directly to primary/secondary heat exchange or water admixing device 5.
For ease of expression, three-way control valve is concealed in Fig. 2, Fig. 3 and is in after being adjusted by three-way control valve
The circuit of off-state.
When secondary side is in peak hours, accumulation of heat module 3 is not only accumulation of heat but also exothermic state, amount of stored heat are less than heat release
Amount；When secondary side is in average load, accumulation of heat module 3 is not only accumulation of heat but also exothermic state, the amount of stored heat and basic phase of thermal discharge
When；When secondary side load at a low ebb, accumulation of heat module 3 is a heat storage state.It can be seen that the accumulation of heat total amount of accumulation of heat module 3
10-20% that is relatively low, can be designed as Daily treatment cost heat.
By above measure, the return water temperature of primary side falls to 30 DEG C, increases to 80 DEG C into backwater temperature difference from 50 DEG C.
The ability and efficiency of distributing system are all greatly improved.And realize that peak regulating function, system self are adjusted by accumulation of heat module 3
Energy saving power is enhanced, the performance of secondary side is improved.
When the return water temperature of secondary side is lower, with Th2aDecline Th1aAlso decline therewith, the heat storage of accumulation of heat module 3
Phase transition temperature may be selected by lower temperature, and the Energy Efficiency Ratio of heat pump 2 is promoted and needs to be promoted by heat pump 2
The heat proportion of grade declines.Therefore, if can take measures to increase secondary side into backwater temperature difference, be more advantageous to this
Embodiment（Reference implementation example 4）.
Embodiment 2：
As shown in figs. 4 through 6, be heat exchange station system schematic diagram corresponding to scheme two, have chosen in figure a typical operating mode into
Row explanation.On the basis of scheme one, to further decrease the workload of heat pump 2, improving efficiency, one has been carried out to system structure
A little adjustment.
In the present embodiment, heat pump 2 is compression heat pump, and the heat storage of accumulation of heat module 3 is phase change heat storage material, phase transition temperature
Tx50 DEG C are chosen to be, 10K has been turned down than scheme one.
In the present embodiment, the backwater section in primary side, the condenser C0 of heat pump 2 is arranged in the evaporator E0 of heat pump 2 first
It connect to form circulation loop with the First Heat Exchanger E1 of accumulation of heat module 3, starts heat pump 2 with the return water of primary side（Th1a=50℃）For
Heat storage additional heat of the low level heat energy to accumulation of heat module 3.After evaporator E0 heat exchange coolings, the final return water temperature of primary side
Spend Th1b30 DEG C are dropped to, the output temperature T of the condenser C0 of heat pump 2gcFor 58 DEG C, to after 3 additional heat of accumulation of heat module flow back temperature
Spend ThcIt is 53 DEG C.Heat pump 2 keeps continuously running duty, more heat pump alternate runs may be used to improve the stability of system.
When primary side flow changes, heat pump 2 can do adaptability adjusting by frequency control.
The backwater section in secondary side is arranged in second heat exchanger E2 of accumulation of heat module 3, and accumulation of heat module 3 is intermittent work herein
Make, play the role of peak regulation, be adjusted here by three-way control valve F1, so that secondary side return water fully or partially through
Second heat exchanger E2 of accumulation of heat module 3 carries out heat exchange heating or is passed straight back to second segment one without the second heat exchanger E2
Secondary/secondary heat exchange or water admixing device 5b.
The third heat exchanger E3 of accumulation of heat module 3 is arranged in primary side into water return loop, and specific location is according to actually answering
With the case where be adjusted.（As shown in Figure 4）Primary/secondary heat exchange or water admixing device 5 are divided to for two sections i.e. 5a in the present embodiment
And 5b, primary side into return water, secondary side into return water all respectively sequentially through 5a and 5b.The third of accumulation of heat module 3 exchanges heat
Device E3 is arranged between two sections, and be adjusted for service intermittent, by three-way control valve F2, so that accumulation of heat module 3 the
Circuit communication or the disconnection of three heat exchanger E3 and primary side.
As shown in figure 5, when secondary side is in peak hours, the heat dissipation capacity increase of end system 6, the return water temperature of secondary side
Degree declines（Th2a=40℃）, the backwater section of secondary side is connected to, with the second heat exchanger E2 of accumulation of heat module 3 by accumulation of heat module at this time
3 heat storage is promoted as the return water of auxiliary heating source for heating secondary side, by return water temperature（Th2b=45℃）Second segment is returned to afterwards
Once/secondary heat exchange or water admixing device 5b.At this point, the third heat exchanger E3 of accumulation of heat module 3 is off so that primary/
The heat exchange amount of secondary heat exchange or water admixing device becomes larger to adapt to the peak load of secondary side.
As shown in fig. 6, when secondary side load at a low ebb, the heat dissipation capacity decline of end system 6, the return water temperature of secondary side
Degree is stepped up to 45 DEG C, sets the second heat exchanger E2 of accumulation of heat module 3 to off-state by three-way control valve F1 at this time,
The return water of secondary side be returned directly to second segment it is primary/secondary heat exchange or water admixing device 5b.At this point, the third of accumulation of heat module 3 is changed
Hot device E3 is in connected state so that the heat exchange amount of primary/secondary heat exchange or water admixing device becomes smaller to adapt to the low ebb of secondary side
Load.
For ease of expression, three-way control valve is concealed in Fig. 5, Fig. 6 and is in after being adjusted by three-way control valve
The circuit of off-state.In principle, the second heat exchanger E2 and third heat exchanger E3 of accumulation of heat module 3 are to work alternatively, i.e., same
Time point only one of which heat exchanger is in connected state or is both off, by three-way control valve F1,
F2 switches over control.
By above measure, the return water temperature of primary side into backwater temperature difference be 80 DEG C.Heat pump 2 compared with Example 1
The output temperature T of condenser C0gcFor 58 DEG C, have dropped 10K；And the inlet and outlet temperature difference of 2 evaporator E0 of heat pump also reduced
10K, therefore not only efficiency improves heat pump 2, needs the thermal energy total amount for promoting grade to also reduced 1/3, power savings are apparent.
Embodiment 3：
Scheme three can be used for heat exchange station system, but be particularly suited for terminal user family system.It is scheme as shown in attached drawing 7-10
The schematic diagram of terminal user family system corresponding to three has chosen a typical operating mode in figure and illustrates.
Existing terminal user family system, capacity of self-regulation is poor, different terminals otherness is big, to ensure all terminals
User's normal use haves no alternative but the operational mode using " big flow, the small temperature difference ".Operating cost is high, and thermal losses is big.Even if operation
Good system generally can only also accomplish 15K or so into backwater temperature difference.
It is secondary heating network or building pipe network in central heating system, institute that primary side described in the present embodiment is corresponding
It is the indoor system of terminal user that the secondary side stated is corresponding.It by primary/secondary heat exchange or is mixed in the hot inlet of terminal user
Water installations 5 are independent by end-user system, maintain the water of terminal user's secondary side to recycle by the way that internal circulating pump 8 is arranged,
And on-off control valve 7 can be installed in terminal user hot inlet.Wherein, heat pump 2 is compression heat pump, the accumulation of heat of accumulation of heat module 3
Body is phase change heat storage material, phase transition temperature TxIt is chosen to be 30 DEG C.The supply water temperature T of primary sideg1For 70 DEG C, return water temperature Th1aFor
55℃。
In the present embodiment, the second heat exchanger E2 of accumulation of heat module 3 is arranged in the backwater section of primary side, by with one first
The return water of secondary side carries out the return water temperature that heat exchange absorbs heat by heat storage, reduces primary side, and primary side return water temperature is from Th1a
=55 DEG C fall to Th1b=33 DEG C, herein the second heat exchanger E2 keep continuous work, to ensure that primary side return water temperature is constant.So
Afterwards, the backwater section in secondary side, the First Heat Exchanger of the evaporator E0 and accumulation of heat module 3 of heat pump 2 is arranged in the condenser C0 of heat pump 2
E1 connects to form circulation loop, the input temp T of the evaporator E0 of heat pump 2geIt is 27 DEG C, the input temperature of the evaporator E0 of heat pump 2
Spend TheIt is 23 DEG C；Heat pump 2 is that low level heat energy heats secondary side return water with accumulation of heat module 3, provides heat for secondary side, heat
Pump 2 is service intermittent or converting operation.
As shown in figure 8, when secondary side is in peak hours, the heat dissipation capacity increase of end system 6, the return water temperature of secondary side
Degree declines（Th2a=50℃）, the backwater section of secondary side is connected to the condenser C0 of heat pump 2 at this time, starts heat pump 2 as auxiliary
The return water of heat source heating secondary side promotes return water temperature（Th2b=55℃）Primary/secondary heat exchange or water admixing device are returned to afterwards
5。
As shown in figure 9, when secondary side load at a low ebb, the heat dissipation capacity decline of end system 6, the return water temperature of secondary side
Degree is stepped up to 55 DEG C, and heat pump 2 is out of service at this time, although the return water of secondary side does not have by the condenser C0 of heat pump 2
Actual influence, that is, the return water of secondary side is returned directly to primary/secondary heat exchange or water admixing device 5.
It further,, will by on-off control valve 7 in the case where condition is suitble to when secondary side load at a low ebb
Primary side disconnects.Only it is heat source with heat pump 2, is indoor heat supply；Or heat pump 2 is closed, merely with the water in pipeline and radiator
Stored heat is indoor heating.
By above measure, the characteristics of return water temperature of primary side falls to 33 DEG C, the program is primary side return water temperature
Spend it is highly stable, for simplify end system it is significant.The supply water temperature of central heating system can be sent out according to actual conditions
Changing, and the return water temperature of the present embodiment is very low, therefore no matter how the supply water temperature of central heating system changes, it can
Realize the big temperature difference operation of end system.
For domestic hot-water's demand of terminal user, realized using structure as shown in Figure 10.On the basis of scheme three,
Third heat exchanger E3 is set in accumulation of heat module 3, and domestic water first passes around the third heat exchanger E3 preheating heating of accumulation of heat module 3
To 27 DEG C or so, you can meet general demand.For bath water etc., the domestic water after preheating is connected to heat pump 2
Condenser C0 export again, start heat pump 2 domestic water can be heated to 40-50 DEG C for using.Since domestic hot-water needs
The presence asked, a part of heat stored in accumulation of heat module 3 are used directly in the preheating of domestic water, accumulation of heat module 3
The phase transition temperature T of heat storagexBeing chosen to be 30 DEG C becomes more reasonable.
It is in order to adapt to the handling characteristics of resident, its main feature is that winter heating using specific structure as shown in Figure 10
The mount of using heat is more much larger than domestic hot-water the mount of using heat, but the instantaneous power demands that domestic hot-water needs are then the several of normal heating power
Times.By taking 100 square metres of house as an example, heating demand is about 4KW, daily the mount of using heat 50-100KWh；Domestic hot-water's power is
16-32KW, daily the mount of using heat are about 16-32KWh.After using the above structure, heat pump 2 can be set according to lower heating load
Meter, and make full use of accumulation of heat module 3 to preheat the cold water of 5 DEG C or so of domestic water, reach 27 DEG C or so, in this base
Heat pump 2 can also meet the heating requirements of domestic hot-water using lower power on plinth.
Further, electrical heating module can be set in accumulation of heat module 3, preferentially supplemented for accumulation of heat module 3 using paddy electricity
Heat.The structure can correspond to the non-special circumstances that cannot connect to heat source for hot season or terminal user.Such as before for the hot season/
When temperature is relatively low afterwards, terminal user can voluntarily open electrical heating pattern, and it is indoor heating to open heat pump 2 as heat source；Together
Sample can provide domestic hot-water to the user non-for the hot season.
Embodiment 4：
Further, embodiment 1 can be used in combination with embodiment 3, i.e., between the primary net of central heating and secondary network（Heat exchange
It stands）Using embodiment 1, embodiment 3 is used in end user location.After end-user system uses embodiment 3, secondary network returns
Coolant-temperature gage is directly reduced to 33 DEG C, and can maintain the temperature always.At this point, the scheme of heat exchange station system is in embodiment 1
On the basis of do corresponding adjustment.
As shown in figure 11, the operating status of peak hours is in for system, the heat storage of accumulation of heat module 3 is phase-transition heat-storage
Material, phase transition temperature Tx45 DEG C are chosen to be, final primary water temperature Th1bCan descend to 25 DEG C it is even lower.Entire heat supply
System realizes the economic operation model of " the big temperature difference, small flow " and has self very strong peak modulation capacity, the adjusting of system comprehensively
Very simple, " fool " heat supply network of realization truly that control becomes.
Certainly, the invention is not limited to the above embodiment, and those skilled in the art are without prejudice to the present invention
Equivalent variations or replacement can be also made under the premise of spirit, these equivalent modifications or replacement are all contained in the application claim
In limited range.
Claims (5)
1. the system for reducing return water temperature of heat supply pipeline, it is characterised in that：The system includes heat source (1), heat pump (2) and accumulation of heat mould
Block (3) is transferred to secondary side for disappearing in the return water temperature of primary side absorption heat reduction primary side, again by the heat absorbed
Change the interference for absorbing secondary side load fluctuation, the even running for realizing heating system, concrete scheme includes following three kinds of schemes, with
Lower three kinds of schemes can independently using or be applied in combination：
Scheme one：The system includes heat pump (2) and accumulation of heat module (3), and evaporator (E0) and condenser are included at least in heat pump (2)
(C0), heat storage, First Heat Exchanger (E1), the second heat exchanger (E2) are included at least in accumulation of heat module (3)；The evaporation of heat pump (2)
First Heat Exchanger (E1) company in the backwater section of primary side, the condenser (C0) of heat pump (2) and accumulation of heat module (3) is arranged in device (E0)
Connect to form circulation loop, heat pump (2) using the return water of primary side as low level heat energy to the heat storage additional heat of accumulation of heat module (3),
And the return water temperature of primary side is reduced；The second heat exchanger (E2) of accumulation of heat module (3) is arranged in secondary side, passes through accumulation of heat mould
Block (3) absorbs secondary side load fluctuation, realizes peak load shifting；
Scheme two：The system includes heat pump (2) and accumulation of heat module (3), and evaporator (E0) and condenser are included at least in heat pump (2)
(C0), heat storage, First Heat Exchanger (E1), the second heat exchanger (E2), third heat exchanger are included at least in accumulation of heat module (3)
(E3)；The third heat exchanger (E3) of accumulation of heat module (3) be arranged primary side into water return loop, the evaporator of heat pump (2)
(E0) backwater section, the condenser (C0) of heat pump (2) being arranged in primary side are connect with the First Heat Exchanger (E1) of accumulation of heat module (3)
Form circulation loop；Primary side intake or return water first by the third heat exchanger (E3) of accumulation of heat module (3) carry out heat exchange by
Heat storage absorbs heat, to reduce the return water temperature of primary side, and the primary side return water after cooling passes through the evaporation of heat pump (2) again
Device (E0), heat pump (2) using the return water of the primary side after cooling as low level heat energy to the heat storage additional heat of accumulation of heat module (3),
And the return water temperature of primary side is further decreased, the second heat exchanger (E2) of accumulation of heat module (3) is arranged in secondary side, passes through accumulation of heat
Module (3) absorbs secondary side load fluctuation, realizes peak load shifting；
Scheme three：The system includes heat pump (2) and accumulation of heat module (3), and evaporator (E0) and condenser are included at least in heat pump (2)
(C0), heat storage, First Heat Exchanger (E1), the second heat exchanger (E2) are included at least in accumulation of heat module (3)；Accumulation of heat module (3)
Second heat exchanger (E2) is arranged in the backwater section of primary side, by carrying out heat exchange with the return water of primary side absorbs heat by heat storage
Amount, the return water temperature for reducing primary side；Condenser (C0) setting of heat pump (2) in secondary side, the evaporator (E0) of heat pump (2) with
First Heat Exchanger (E1) connection of accumulation of heat module (3) forms circulation loop；Secondary side load fluctuation, reality are absorbed by heat pump (2)
Existing peak load shifting.
2. the system according to claim 1 for reducing return water temperature of heat supply pipeline, it is characterised in that：Heat pump (2) is compression
Formula heat pump or absorption heat pump preferentially use compression heat pump.
3. the system according to claim 1 for reducing return water temperature of heat supply pipeline, it is characterised in that：In accumulation of heat module (3)
Heat storage be sensible heat heat-storing material or phase change heat storage material, preferentially use phase change heat storage material.
4. the system according to claim 1 for reducing return water temperature of heat supply pipeline, it is characterised in that：For terminal user's
Domestic hot-water's demand, on the basis of scheme three of claim 1, setting third heat exchanger (E3), life in accumulation of heat module (3)
Water is applied flexibly to first pass around third heat exchanger (E3) preheating of accumulation of heat module (3) and export, meet general demand；According to need
The condenser (C0) that the domestic water after preheating can be connected to heat pump (2) is wanted to export again, life can be used by starting heat pump (2)
Water heats to use.
5. the system according to claim 1 for reducing return water temperature of heat supply pipeline, it is characterised in that：In accumulation of heat module (3)
Middle setting electrical heating module is preferentially accumulation of heat module (3) additional heat using paddy electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433668.3A CN108592140B (en) | 2018-05-08 | 2018-05-08 | System for reducing return water temperature of heat supply pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433668.3A CN108592140B (en) | 2018-05-08 | 2018-05-08 | System for reducing return water temperature of heat supply pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108592140A true CN108592140A (en) | 2018-09-28 |
| CN108592140B CN108592140B (en) | 2020-02-18 |
Family
ID=63635783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810433668.3A Active CN108592140B (en) | 2018-05-08 | 2018-05-08 | System for reducing return water temperature of heat supply pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108592140B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413896A (en) * | 2020-11-06 | 2021-02-26 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Hot water loop variable load device and hot water loop |
| CN112577100A (en) * | 2020-11-26 | 2021-03-30 | 清华大学 | Heating compensation method and device and readable storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4443204C2 (en) * | 1994-12-05 | 2000-06-08 | Zae Bayern Bayerisches Zentrum Fuer Angewandte Energieforschung Ev | Heat transfer system |
| CN101629733A (en) * | 2009-08-18 | 2010-01-20 | 清华大学 | Method for reducing return water temperature of heat supply pipeline |
| CN201885295U (en) * | 2010-09-29 | 2011-06-29 | 北京建筑工程学院 | Compression-type heat pump heat exchange device |
| CN103776079A (en) * | 2014-02-28 | 2014-05-07 | 清华大学 | Electric peaking combined heat and power (CHP) waste heat recovery device and operating method thereof |
| CN104197397A (en) * | 2014-09-23 | 2014-12-10 | 大连葆光节能空调设备厂 | Energy-saving heat supply system for decreasing temperature of heating return water and recovering waste heat of thermal power plant |
| CN204693561U (en) * | 2015-03-30 | 2015-10-07 | 杭州华电双良节能技术有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN heating installation with peak regulating function |
| CN105180247A (en) * | 2015-08-26 | 2015-12-23 | 朱杰 | Central heating system and method with heat accumulation peak regulation function |
| CN105240897A (en) * | 2015-11-03 | 2016-01-13 | 朱杰 | Heat-storage peak regulating device used for power supply system |
| CN105953426A (en) * | 2016-05-13 | 2016-09-21 | 湖南同为节能科技有限公司 | Heat pump type large-temperature-difference heat supply method |
| EP3101351A1 (en) * | 2014-01-31 | 2016-12-07 | Daikin Industries, Ltd. | Temperature regulation system |
| CN106352388A (en) * | 2016-09-05 | 2017-01-25 | 华北电力大学 | Electric heat pump and heat storage device combined thermal station system |
-
2018
- 2018-05-08 CN CN201810433668.3A patent/CN108592140B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4443204C2 (en) * | 1994-12-05 | 2000-06-08 | Zae Bayern Bayerisches Zentrum Fuer Angewandte Energieforschung Ev | Heat transfer system |
| CN101629733A (en) * | 2009-08-18 | 2010-01-20 | 清华大学 | Method for reducing return water temperature of heat supply pipeline |
| CN201885295U (en) * | 2010-09-29 | 2011-06-29 | 北京建筑工程学院 | Compression-type heat pump heat exchange device |
| EP3101351A1 (en) * | 2014-01-31 | 2016-12-07 | Daikin Industries, Ltd. | Temperature regulation system |
| CN103776079A (en) * | 2014-02-28 | 2014-05-07 | 清华大学 | Electric peaking combined heat and power (CHP) waste heat recovery device and operating method thereof |
| CN104197397A (en) * | 2014-09-23 | 2014-12-10 | 大连葆光节能空调设备厂 | Energy-saving heat supply system for decreasing temperature of heating return water and recovering waste heat of thermal power plant |
| CN204693561U (en) * | 2015-03-30 | 2015-10-07 | 杭州华电双良节能技术有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN heating installation with peak regulating function |
| CN105180247A (en) * | 2015-08-26 | 2015-12-23 | 朱杰 | Central heating system and method with heat accumulation peak regulation function |
| CN105240897A (en) * | 2015-11-03 | 2016-01-13 | 朱杰 | Heat-storage peak regulating device used for power supply system |
| CN105953426A (en) * | 2016-05-13 | 2016-09-21 | 湖南同为节能科技有限公司 | Heat pump type large-temperature-difference heat supply method |
| CN106352388A (en) * | 2016-09-05 | 2017-01-25 | 华北电力大学 | Electric heat pump and heat storage device combined thermal station system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413896A (en) * | 2020-11-06 | 2021-02-26 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Hot water loop variable load device and hot water loop |
| CN112577100A (en) * | 2020-11-26 | 2021-03-30 | 清华大学 | Heating compensation method and device and readable storage medium |
| CN112577100B (en) * | 2020-11-26 | 2021-12-10 | 清华大学 | Heating compensation method and device and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108592140B (en) | 2020-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105240897B (en) | A kind of accumulation of heat peak adjusting device for heating system | |
| CN202209817U (en) | District cooling, heating and power combined energy system based on absorption heat exchange | |
| CN109696891A (en) | Micro energy network system comprising air source heat pump and energy storage and operation control method thereof | |
| CN106940033B (en) | More equipment based on abandonment electric energy combine high/low temperature independence storage heating system | |
| CN102331110A (en) | Regional heating, cooling and power combined energy system and method based on absorption heat exchange | |
| CN108266782A (en) | Heating system | |
| CN110567024A (en) | Solar valley electricity energy storage heat supply heating system | |
| CN109882910B (en) | Coupling heat pump type heating power station for realizing electric power peak regulation | |
| CN108592140A (en) | The system for reducing return water temperature of heat supply pipeline | |
| CN206846864U (en) | Double thermal source heat accumulating type intelligent heating systems | |
| CN208686493U (en) | Gas distributed energy system | |
| CN213207975U (en) | Air compressor machine waste heat recovery utilizes system | |
| CN110567025B (en) | Thermoelectric decoupling system of heat storage tank coupled compression heat pump and operation method | |
| CN209355351U (en) | A kind of high-efficiency heat pump machine set system | |
| CN109737615B (en) | Small household solar thermoelectric cooling poly-generation system | |
| CN114251708B (en) | Adjusting method of large-temperature-difference adjusting system based on absorption heat exchange | |
| CN103162465A (en) | Solar energy supply system | |
| WO2022121486A1 (en) | Heating system employing natural gas | |
| CN211146893U (en) | Hot water system combining air compressor waste heat and air energy heat pump | |
| CN201368525Y (en) | Heat storage device with common heat source for domestic hot water and heating water | |
| CN210485841U (en) | Coupling heat pump type heating station capable of realizing electric power peak regulation | |
| CN216744687U (en) | System for meeting cold and hot demands of building by utilizing light energy to match heat storage device | |
| CN217109727U (en) | Efficient heat supplementing system of heat exchange station based on electric heat pump and heat accumulator | |
| CN218565815U (en) | Solar photovoltaic photo-thermal-based building combined cooling heating and power system | |
| CN218995940U (en) | Temperature control device of energy storage container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 210008 Unvisited Space A01, 396 Binjiang Avenue, Pukou District, Nanjing City, Jiangsu Province Applicant after: Nanjing Kulang Electronic Co., Ltd. Address before: Yudaojie Qinhuai District of Nanjing City, Jiangsu province 210007 No. 58-1 Ming Imperial Building 2 floor room 211 Applicant before: Nanjing Kulang Electronic Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.396 Binjiang Avenue, Jiangbei new district, Nanjing City, Jiangsu Province Applicant after: Nanjing Kulang Electronic Co., Ltd. Address before: 210008 Unvisited Space A01, 396 Binjiang Avenue, Pukou District, Nanjing City, Jiangsu Province Applicant before: Nanjing Kulang Electronic Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211215 Address after: 154100 No. 2, building 1, No. 4, Junchuan farm First Committee, Luobei County, Hegang City, Heilongjiang Province Patentee after: Heilongjiang Baoquanling reclamation area Chengxin heating Co.,Ltd. Address before: 210008 A01, No.396 Binjiang Avenue, Jiangbei new district, Nanjing City, Jiangsu Province Patentee before: NANJING KULANG ELECTRONIC Co.,Ltd. |
|
| TR01 | Transfer of patent right |