CN110094788A - Heat recovery and delayed release device and method for heating system - Google Patents
Heat recovery and delayed release device and method for heating system Download PDFInfo
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- CN110094788A CN110094788A CN201810378374.5A CN201810378374A CN110094788A CN 110094788 A CN110094788 A CN 110094788A CN 201810378374 A CN201810378374 A CN 201810378374A CN 110094788 A CN110094788 A CN 110094788A
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- heat
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- 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
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
- F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
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- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Central Heating Systems (AREA)
Abstract
For the heat recovery and delayed release device of heating system, including heat source side system (1), end system (2), which includes energy-storage module (3) and internal circulating pump (4)；Using energy storage technology, when end system load generates mutation from large to small, heat storage is extracted from end system rapidly and gets up and is used, eliminates the thermal inertia of heating system.
Description
Technical field
The present invention relates to a kind of heat recovery for heating system and delayed release device and method, using energy storage technology,
When end system load generates mutation from large to small, heat storage is extracted from end system rapidly and gets up and is used
Device and method, belong to the technical field of heating system.
Background technique
The thermal inertia of heating system is to restrict a key factor of heating according to need, particularly with most important in heating according to need
Intermittent heat demand, existing technical solution is difficult to meet the requirement of energy-saving run.It is specific:
For public building, usual work hours section requires normal heat supply and night heat supply or can not maintain antifreeze operation
?；
For house, if user goes to work daytime in family nobody when, heat supply or underrun can not be maintained, had in family
The normal heat supply of the period of people.
For above situation, heat demand can occur mutation from large to small at some time points, then will maintain one section
The low load condition (usually relevant to the production and living of people and work and rest rule) of long period, but the response of heating system
Speed seriously lags, so as to cause the waste of the energy.
Currently, the most central heating system of northern China is all the system using the radiator end of hot water circuit.
When heating system operates normally, the water temperature in pipeline and radiator end is higher, if being directly switch to underrun state,
Even if end system stops water circulation, the water temperature in pipeline and radiator end can only gradually be connect from higher fall to room temperature
Closely, and the heat during this in water just loses in vain.
It is illustrated below: when normal heat supply, average temperature in pipeline and radiator end (radiator) be 60 DEG C with
On, after being switched to low consumption operating status, it is 20 DEG C or less that average temperature, which is gradually reduced,.Corresponding end radiator casing as a result,
Body and recirculated water can all generate the temperature difference of 30-40K, and heat corresponding to the temperature difference of this part at least can be used for meeting corresponding building
The institute of the heat supply at full capacity calorific requirement of 1-3 hour.
In prior art, the heat of this part can not be utilized.Certainly, there are also flexible method, examples
A period of time such as before demand generates mutation reduces heating load or interrupts heat supply, but such way is asked there is also some
Topic: on the one hand operation setting is more troublesome, on the other hand will lead to Heating quality and is declined and still suffer from partial heat
Scatter and disappear.
Summary of the invention
To solve problem of the prior art, the present invention uses energy storage technology, generates from large to small in end system load
When mutation, heat storage is extracted from end system rapidly and gets up and is used.
Concrete scheme is as follows: it include heat source side system, end system in system, under normal heating demand operating condition, and heat source
Side system is connect with end system, provides heat by heat source side system for end system；
It is characterized in that, the device includes energy-storage module and internal circulating pump；
Energy storage material and heat exchanger are included at least in the energy-storage module；
(as shown in Figure 1) is when mutation from large to small occurs for the load of end system (at this point, recirculated water in end system
Temperature is higher than the mean temperature of the energy storage material in energy-storage module), heat source side system and end system are disconnected, and by end system
System is connected with energy-storage module, internal circulating pump, cycles through energy-storage module by the water in internal circulating pump driving end system
Heat exchanger, make by heat exchanger recirculated water and energy storage material carry out heat exchange, by the heat recovery in water and be stored into
Among energy module, while making the rapid drop in temperature of recirculated water, scattering and disappearing so as to avoid heat.
Further, energy-storage module is divided into two kinds:
The first: energy-accumulating water tank passes through heat exchange by the water in the water and end system that store in water tank using water as energy storage material
Device carries out heat exchange, specifically includes: indirect heat exchange is carried out using dividing wall type heat exchanger, or using displaced type heat exchange structure or
Water-mixing type heat exchange structure carries out direct heat exchange；The disadvantages of this solution is that water tank volume is larger, inconvenient for use；
Second: the energy-storage module is phase-change accumulation energy module, and energy storage material therein is phase-changing energy storage material, phase-change accumulation energy
The phase transition temperature of material is set to be lower than 35 DEG C.Phase-change accumulation energy module can more rapidly, easily realize heat recovery；
The working principle of energy-accumulating water tank is fairly simple, is not repeating below.Phase-change accumulation energy module is to realize technical side of the invention
The optimal selection of case will be introduced hereinafter.
Due to areal variation, systematical difference etc. factor, the system supply and return water temperature of each heating system setting has very big
Difference, therefore phase transition temperature parameter should be selected according to the actual operation parameters of heating system.Phase transition temperature is set as
It is the reasonable regional scope of the comparison provided after comprehensive various factors between 15-35 DEG C.
It should be pointed out that it is lower that the heat quality stored among energy-storage module is opposite.
By taking phase-change accumulation energy module as an example, phase-change accumulation energy module is realized between recirculated water and phase-changing energy storage material by heat exchanger
Heat exchange, must have the temperature difference of certain amplitude that heat exchange just may be implemented between the two, usual the smallest heat transfer temperature difference is 3-
5K.Temperature at heat exchanger entrance and the temperature difference between the phase transition temperature of phase-changing energy storage material are bigger, and heat exchange efficiency is higher, phase
It is also bigger with the heat for storing or discharging under the conditions of flow.
For designing heat transfer temperature difference 5K:
Circulating water temperature when storing heat at heat exchanger entrance and the temperature difference between the phase transition temperature of phase-changing energy storage material are at least
There should be+20K or more, to guarantee the enough heats of fast storage；
Discharge heat when heat exchanger exit at circulating water temperature and phase-changing energy storage material phase transition temperature between the temperature difference about-
5K；
As a result, by storage process and release process, will at least generate the temperature difference of 25K, so as to cause heat quality significantly under
Drop, stored heat are difficult to be directly used in the heat supply of normal duty operating condition.
Therefore, it for low-grade thermal energy of energy-storage module storage, can be used using following methods:
First, heat quality is promoted by heat pump, the heat supply for normal duty operating condition；
Second, in terms of domestic water, domestic water lower for temperature to be preheated；
Third is applied to the running on the lower load of end system directly as low-grade heat source.
In above-described 3 points, first, second point be not the present invention program emphasis, the emphasis of the solution of the present invention exists
In thirdly, by the heating system that directly applies to of these low grade heat energies, i.e., it is applied to end directly as low-grade heat source
The running on the lower load of system.
Specifically, after mutation from large to small occurs for the load of end system, (this under lasting running on the lower load
When, the temperature of the water in end system gradually decreases and is lower than the mean temperature of energy-storage module), end is driven by internal circulating pump
Water in system cycles through the heat exchanger of energy-storage module, recirculated water and energy storage material is made to carry out heat exchange by heat exchanger,
The heat stored in energy-storage module is gradually released, circulating-heating is carried out to water by energy-storage module, to maintain end system
The underrun of system.
Further, under underrun state, if the heat consumption stored in energy-storage module is totally, by energy storage mould
Block is connect with heat source side system, is energy-storage module additional heat by heat source side system, then again by end system and energy-storage module
Connection carries out circulating-heating to water by energy-storage module, to maintain the underrun of end system.
The invention has the advantages that
1, heat recovery function: the currently the only scheme that can inexpensive, quickly recycle the surplus heat in end system eliminates end
The thermal inertia of end system, is conducive to behavior energy saving；
2, slow-release function: since the phase transition temperature of energy-storage module is lower (being typically set to 15-35 DEG C), in underrun state
Under, it is naturally merely able to provide lower supply water temperature, therefore the ability that end system externally radiates by energy-storage module
Also it declines to a great extent, to accomplish the slow release of heat while meeting underrun；
3, rational allocation heat quality: heat accumulation temperature is relatively low when quickly absorbing heat by energy-storage module, i.e. heat quality
There is a greater loss, therefore stored heat is difficult to be directly used in the heat supply of normal duty operating condition, by energy-storage module in this programme
As low-grade heat source, the application demand of underrun can satisfy just, to directly turn waste into wealth.
Detailed description of the invention
Attached drawing 1: the heat recovery and delayed release device structure chart for heating system of the invention；
Attached drawing 2: the normal heat supply running state diagram of the end system of embodiment 1；
Attached drawing 3: the operating status figure of heat is recycled when the end system heat demand mutation of embodiment 1；
Attached drawing 4: the operating status figure when end system underrun of embodiment 1；
Attached drawing 5: embodiment 1 using heat source side system as the operating status figure of energy-storage module additional heat.
Specific embodiment
Embodiment 1:
Hereinafter, being described in detail to technical solution of the present invention, the embodiment in conjunction with a public building heating system case
In, energy-storage module 3 is phase-change accumulation energy module.The corresponding characteristics of demand of the embodiment is:
Work hours at 18 points (8 a.m. in afternoon between) are normal duty；
Time of having a rest (at 18 points in afternoon is between next day 8 a.m.) be underrun, main purpose be prevent pipeline from freezing, and
It can be used for suitably maintaining room temperature.
As shown in Fig. 2, heat source side system 1 is connect with end system 2, by heat source under work hours normal duty operating condition
Side system 1 is that end system 2 provides heat.Heat source side system 1 and end system 2 are 60/50 DEG C for return water parameter；
As shown in figure 3, on the point of interface of work hours and time of having a rest, i.e. at 18 in afternoon when, heat demand generates mutation, this
When, heat source side system 1 and end system 1 are disconnected, and end system 1 is connected with energy-storage module 3, internal circulating pump 4, by
Internal circulating pump 4 drives the water in end system 2 to cycle through the heat exchanger 6 of energy-storage module 3, to recycle by heat exchanger 6
Water and energy storage material 5 carry out heat exchange, among the heat storage in water to energy-storage module 3, and make the temperature of recirculated water fast
Speed decline, scattering and disappearing so as to avoid heat；
At this point, the mean temperature of the recirculated water in end system 2 is about 55 DEG C, the phase alternating temperature of the energy storage material 5 in energy-storage module 3
Degree is designed as 30 DEG C.After the water in end system 2 cycles through heat exchanger 6 of energy-storage module 3, water temperature falls to rapidly 35
DEG C or so, extra heat is transferred among energy-storage module 3 in water.The entire heat transfer process duration is shorter, is about 30-60
Minute.Water circulation can be suspended after heat exchange, so that the water natural cooling in end system, temperature drop to 20 DEG C or so.
Under lasting underrun state, use energy-storage module 3 as low-grade heat source, i.e., as shown in figure 4, starting
Internal circulating pump 4 cycles through the heat exchanger 6 of energy-storage module 3, by changing by the water in internal circulating pump 4 driving end system 2
Hot device 6 makes recirculated water and energy storage material 5 carry out heat exchange, when the water in end system 2 cycles through the heat exchange of energy-storage module 3
After device 6, it is 25 DEG C or so that water temperature, which increases, and 25 DEG C of leaving water temperature is sufficient for the requirement of running on the lower load, and can be with
Accomplish the slow release of heat.Heat needed for maintaining normal duty state to run 1 hour is enough that low load condition is maintained to run
4-8 as long as hour.
Under lasting underrun state, use energy-storage module 3 as low-grade heat source, when storing in energy-storage module
Heat consumption totally when: be energy storage mould by heat source side system as shown in figure 5, energy-storage module is connect with heat source side system
Block additional heat；The supply and return water temperature parameter of heat source side system 1 is 60/35 DEG C；Since heat transfer temperature difference is larger, the heat exchanging process
It can be rapidly completed.
After completing heat supply, heat source side system 1 and energy-storage module 3 are disconnected, then by end system 1 and energy-storage module
3, internal circulating pump 4 is connected and (returns to the state of Fig. 4), circulating-heating is carried out to water by energy-storage module, to continue to
The underrun of end system.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of spirit, these equivalent variation or replacement are all contained in the application right
It is required that in limited range.
Claims (6)
1. being used for the heat recovery and delayed release device of heating system, including heat source side system (1), end system (2), normally supplying
Under thermic load operating condition, heat source side system (1) is connect with end system (2), is end system (2) offer by heat source side system (1)
Heat；It is characterized in that, the device includes energy-storage module (3) and internal circulating pump (4)；Wherein:
Energy storage material (5) and heat exchanger (6) are included at least in the energy-storage module (3)；
When mutation from large to small occurs for the load of end system (2), heat source side system (1) and end system (2) is disconnected,
And end system (2) is connected with energy-storage module (3), internal circulating pump (4), end system is driven by internal circulating pump (4)
(2) water in cycles through the heat exchanger (6) of energy-storage module (3), makes recirculated water and energy storage material (5) by heat exchanger (6)
Heat exchange is carried out, by the heat recovery in water and is stored among energy-storage module (3), while under making the temperature of recirculated water rapid
Drop, scattering and disappearing so as to avoid heat.
2. the heat recovery and delayed release device according to claim 1 for heating system, it is characterised in that: in end system
After mutation from large to small occurs for the load of system (2), under lasting running on the lower load, end is driven by internal circulating pump (4)
Water in end system (2) cycles through the heat exchanger (6) of energy-storage module (3), makes recirculated water and energy storage material by heat exchanger (6)
Expect that (5) carry out heat exchange, the heat stored in energy-storage module (3) is gradually released, water is followed by energy-storage module (3)
Ring heating, to maintain the underrun of end system (2).
3. the heat recovery and delayed release device according to claim 1 for heating system, it is characterised in that: in underload
Under operating status, if the heat consumption stored in energy-storage module (3) is totally, even by energy-storage module (3) and heat source side system (1)
It connects, is energy-storage module (3) additional heat by heat source side system (1), then again by end system (2) and energy-storage module (3), inside
Circulating pump (4) is connected, and circulating-heating is carried out to water by energy-storage module (3), so that the underload of end system (2) be maintained to transport
Row.
4. the heat recovery and delayed release device according to claim 1 for heating system, it is characterised in that: the storage
Energy module (3) is phase-change accumulation energy module, and energy storage material (5) therein is phase-changing energy storage material.
5. the heat recovery and delayed release device according to claim 4 for heating system, it is characterised in that: the phase
The phase transition temperature of change energy-storage material (5) is set to be lower than 35 DEG C.
6. for the heat recovery of heating system and the application method of delayed release device, it is characterised in that: when bearing for end system (2)
When mutation from large to small occurs for lotus, is recycled from end system (2) using energy-storage module (3) and store heat, it is stored
Heat belongs to low grade heat energy, is utilized using following methods:
First, heat quality is promoted by heat pump, the heat supply for normal duty operating condition；
Second, in terms of domestic water, domestic water lower for temperature to be preheated；
Third is applied to the running on the lower load of end system (2) directly as low-grade heat source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810378374.5A CN110094788B (en) | 2018-04-25 | 2018-04-25 | Heat recovery and slow release device and method for heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810378374.5A CN110094788B (en) | 2018-04-25 | 2018-04-25 | Heat recovery and slow release device and method for heating system |
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| Publication Number | Publication Date |
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| CN110094788A true CN110094788A (en) | 2019-08-06 |
| CN110094788B CN110094788B (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219768A (en) * | 2020-03-05 | 2020-06-02 | 南京酷朗电子有限公司 | Heat recovery and sustained release system and method for heating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102884A (en) * | 2011-03-18 | 2011-06-22 | 清华大学 | Seasonal heat-storage heat supply system and operation method |
| EP2420745A2 (en) * | 2010-08-17 | 2012-02-22 | Lg Electronics Inc. | Heat pump heating system |
| CN105180247A (en) * | 2015-08-26 | 2015-12-23 | 朱杰 | Central heating system and method with heat accumulation peak regulation function |
| KR101761012B1 (en) * | 2014-10-01 | 2017-07-24 | 린나이코리아 주식회사 | Hot water supply heating device |
-
2018
- 2018-04-25 CN CN201810378374.5A patent/CN110094788B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2420745A2 (en) * | 2010-08-17 | 2012-02-22 | Lg Electronics Inc. | Heat pump heating system |
| CN102102884A (en) * | 2011-03-18 | 2011-06-22 | 清华大学 | Seasonal heat-storage heat supply system and operation method |
| KR101761012B1 (en) * | 2014-10-01 | 2017-07-24 | 린나이코리아 주식회사 | Hot water supply heating device |
| CN105180247A (en) * | 2015-08-26 | 2015-12-23 | 朱杰 | Central heating system and method with heat accumulation peak regulation function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219768A (en) * | 2020-03-05 | 2020-06-02 | 南京酷朗电子有限公司 | Heat recovery and sustained release system and method for heating system |
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