CN104180698A - Heat storage apparatus - Google Patents
Heat storage apparatus Download PDFInfo
- Publication number
- CN104180698A CN104180698A CN201410414794.6A CN201410414794A CN104180698A CN 104180698 A CN104180698 A CN 104180698A CN 201410414794 A CN201410414794 A CN 201410414794A CN 104180698 A CN104180698 A CN 104180698A
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- heat
- heat storage
- heat exchange
- storage units
- housing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat storage apparatus comprising a housing. At least one insulation layer is arranged inside the housing and divides the housing into at least two heat storage units; a heat exchange coil is disposed in each heat storage unit; the heat exchange coils in each two adjacent heat storage units are communicated; the heat exchange coil of the heat storage unit arranged at one end of the housing is provided with a heat storage inlet; the heat exchange coil of the heat storage unit arranged at the other end of the housing is provided with a heat storage outlet. In the heat storage process, a high heat transfer temperature difference is constantly kept between each heat storage unit and hot air, and heat of the hot air can be fully stored; meanwhile, the tail one of heat storage layers absorbs little heat, cold air can be discharged from the outlet end of the corresponding heat exchange coil, and the cold air can be used as a cooling medium to circulate. When the heat is guided out, heat of the one, close to the cold air inlet end, of the heat storage units can be maximally guided out; the temperature of air at the heat storage outlet can be kept stable; quality of heated air is guaranteed.
Description
Technical field
The present invention relates to heat redundancy technique field, refer in particular to a kind of heat-storing device.
Background technology
Heat accumulation/heat exchanger can store temporary transient no heat, in needs by built-in heat exchanger by store exchange heat out.Conventionally adopt solid heat accumulating (if sandstone, steel ball, pottery and concrete etc.) or liquid heat accumulating (as water, high temperature heat conductive oil etc.) etc.The a large amount of solid heat accumulating of heat accumulation cavity the inside filling has been arranged heat exchange coil simultaneously.When heat accumulation, unnecessary heat is absorbed by solid particle, when heat release, needs the working medium of heating from solid particle, to absorb heat to improve the temperature of self.
As a rule, the particle of heat accumulation/heat exchanger inside is in contact with one another, and that is to say in heat storage process, between heat accumulating, can mutually conduct heat, and finally has the temperature of homogeneous.For this class thermal storage device, in heat accumulation process, very approaching with the heat accumulating temperature near hot air outlet end near the temperature of hot-air inlets end in heat accumulation cavity, make hot-air still there is higher temperature at the port of export.In addition,, in heat transfer process, along with passing into of cold air, the temperature of heat accumulation cavity inside heat accumulating declines together.Thereby this class thermal storage device is also constantly to change in the exit flow temperature of exothermic phase, and along with the carrying out of exothermic process declining always, outlet temperature is very unstable.So just cause a bad result: when heat accumulation, heat fully can not be passed to heat-storage medium, the gas flow temperature in exit is higher simultaneously, be not suitable for continuing to serve as cooling medium and use.Meanwhile, in heat release, the hot air temperature that heat exchanger provides is unstable, and it is short that hot-air maintains the time of high-temperature, will progressively decline afterwards.
Summary of the invention
Based on this, the invention reside in a kind of heat-storing device is provided, point grade that can realize heat stores and point grade derives, and temperature homogeneous raises and the deficiency of decline when improving common heat-storing device store heat.
Its technical scheme is as follows:
A kind of heat-storing device, it comprises housing, in described housing, be provided with at least one thermal insulation layer described housing is divided into at least two heat storage units, in each heat storage units, be provided with heat exchange coil, heat exchange coil in adjacent two described heat storage units is communicated with, and the heat exchange coil that is positioned at the heat storage units of described housing one end is provided with heat accumulation entrance, the heat exchange coil that is positioned at the heat storage units of housing the other end is provided with heat accumulation outlet.
Below further technical scheme is described:
Further, described heat exchange coil is two heat exchange coils, and the heat exchange coil that is provided with described heat accumulation entrance is also provided with heat exchange outlet, and the heat exchange coil that is provided with described heat accumulation outlet is provided with heat exchange import.
Further, described thermal insulation layer distributes up and down, housing described in longitudinal subdivision.
Further, described in each, in heat storage units, be equipped with oil filler, oil drain out.
Further, in each heat storage units, be provided with the heat accumulation chamber that longitudinal section is ring-type.
Further, the middle part in described heat accumulation chamber is provided with the first through hole, and described thermal insulation layer is provided with second through hole corresponding with described the first through hole, and adjacent two described heat exchange coils are communicated with by described the first through hole, described the second through hole.
Further, the wall of described thermal insulation layer the second through hole offers the opening being communicated with described thermal insulation layer outer wall.
Further, adjacent two described heat exchange coils are communicated with in described the second through hole by nut.
Further, in described housing, be provided with heat-insulation layer, described heat-insulation layer surrounds all described heat accumulations chamber.
Further, the upper base of housing and go to the bottom and be respectively equipped with thermal insulation layer.
Below principle, the effect etc. of aforementioned techniques scheme are described:
In described heat-storing device, thermal insulation layer is set, described heat-storing device is divided into multiple heat storage units.In heat accumulation process, after hot-air enters heat accumulation entrance and enters, first carry out heat exchange with the heat storage units nearest apart from heat accumulation entrance, after the heat exchange of this heat storage units, the temperature of hot-air reduces, enter next heat storage units by heat exchange coil again and carry out heat exchange, enter successively next stage heat storage units and carry out heat exchange.After the heat exchange of what heat storage units, the heat of hot-air can fully be stored, and discharges cold air from afterbody heat storage units, and this cold air can be used as cooling medium and recycles.Along with the carrying out of heat transfer process, near the heat storage units of the heat accumulation entrance heat accumulation state that first reaches capacity, and then next heat storage units reaches capacity subsequently, reaches one by one heat accumulation saturated along all the other heat storage units of heat exchange coil direction, and the heat accumulation stage finishes.Described heat-storing device can allow and reach one by one higher temperature near the heat storage units of hot heat accumulation arrival end, and point grade that realizes heat stores, and can also, at utmost from heat accumulation outlet output cold air, recycle as cooling medium simultaneously.
In heat accumulation process, hot-air is after thermal storage device heat exchange, and the fully airborne heat of store heat, can export again cold air simultaneously, and this cold air can continue to recycle as cooling medium.Meanwhile, in heat derivation process, the heat accumulation/heat exchanger of this programme design can provide the hot-air of stablizing high temperature for a long time, and Heating quality is better.
In the thermal release stage, there is compressed air to be heated to flow into from the heat exchange import of heat-storing device.First compressed air to be heated carries out heat exchange with the minimum heat storage units of heat accumulation temperature, then carries out heat exchange with the higher heat storage units of heat accumulation temperature.The temperature of compressed air is more and more higher, with the heat transfer intensity of follow-up heat storage units also more and more a little less than.After compressed air is heated to uniform temperature, no longer carry out heat exchange with heat storage units thereafter.Therefore, the heat of the undermost heat storage units of heat-storing device is exported at first, and the heat storage units heat exchange amount on heat-storing device top is few, and the heat wherein storing is still in high-grade state, and the high temperature compressed air air-flow of output also has stable temperature.Described heat-storing device, can either allow and farthest be discharged near the heat in the heat storage units of cool air inlet section, also allows the hot air temperature of output very stable simultaneously.
Described heat-storing device is applicable to the application scenarios such as cooling heat between solar energy heat-storage and compressor stage.The heat supply place of described heat-storing device is suitable for the high-end purposes such as combustion gas turbine and air turbine.The heat transfer medium in heat accumulation stage can use the media such as air, water and steam, the main air with pressure (for heated compressed air) of medium of exothermic phase, can be used for the expansion acting of combustion gas turbine or air turbine through the compressed air of heating.
Brief description of the drawings
Fig. 1 is the structural representation of the heat-storing device described in the embodiment of the present invention;
Fig. 2 is the structural representation of the single heat storage units described in the embodiment of the present invention;
Fig. 3 is the formation schematic diagram in the heat accumulation chamber described in the embodiment of the present invention;
Fig. 4 is the structural representation of the thermal insulation layer described in the embodiment of the present invention.
Description of reference numerals:
10, housing, 12, thermal insulation layer, 14a-14c, heat storage units, 16a-16c, heat exchange coil, 18, heat accumulation entrance, 20, heat accumulation outlet, 22, heat exchange outlet, 24, heat exchange import, 26, oil filler, 28, oil drain out, 30a-30b, heat accumulation chamber, 32, concave structure, 34a-34b, the first through hole, 35, nut, 36, the second through hole, 38, opening, 40, heat-insulation layer.
Detailed description of the invention
Below embodiments of the invention are elaborated:
As shown in Figures 1 and 2, a kind of heat-storing device, it comprises housing 10, in described housing 10, be provided with at least one thermal insulation layer 12 described housing 10 is divided into at least two heat storage units, in each heat storage units, be provided with heat exchange coil, heat exchange coil in adjacent two described heat storage units is communicated with, and the heat exchange coil that is positioned at the heat storage units of described housing 10 1 ends is provided with heat accumulation entrance 18, and the heat exchange coil that is positioned at the heat storage units of housing the other end is provided with heat accumulation outlet 20.
The present embodiment is preferably provided with two described thermal insulation layers 12, described housing 10 is divided into from top to bottom three heat storage units 14a-14c by described thermal insulation layer 12, in three described heat storage units 14a-14c, be respectively equipped with heat exchange coil 16a-16c, described heat exchange coil 16a is communicated with described heat exchange coil 16b, and described heat exchange coil 16b is also communicated with described heat exchange coil 16c, the heat exchange coil 16a that is positioned at described housing 10 upper ends is provided with heat accumulation entrance 18, and the heat exchange coil 16c that is positioned at housing 10 lower ends is provided with heat accumulation outlet 20.
Thermal insulation layer 12 is set in described heat-storing device, described heat-storing device 12 is divided into multiple heat storage units.In heat accumulation process, after hot-air enters heat accumulation entrance 18 and enters, first carry out heat exchange with the heat storage units 14a nearest apart from heat accumulation entrance 18, through the heat exchange of this heat storage units 14a, in heat storage units 14a, store the liquid heat-storage medium of heat conduction wet goods and absorb heat, the temperature of heat accumulation oil raises, and the temperature of hot-air reduces.Hot-air through with heat storage units 14a heat exchange after, hot-air enters next heat storage units 14b along heat exchange coil 16b, 16c again and carries out heat exchange, the liquid heat-storage medium of the heat conduction wet goods that contains in heat storage units 14b continues heat absorption and heats up.After the heat exchange of three grades of heat storage units, the heat of hot-air can fully be stored, and discharges cold airs from the heat accumulation outlet 20 of the heat exchange coil 16c of afterbody heat storage units 14c, and this cold air can be used as cooling medium and recycles.Along with the carrying out of heat transfer process, near the heat storage units 14a of the heat accumulation entrance 18 heat accumulation state that first reaches capacity, and then next heat storage units 14b reaches capacity subsequently, also reaches heat accumulation saturated along the heat storage units 14c of heat exchange coil direction, and the heat accumulation stage finishes.Described heat-storing device can allow and reach one by one higher temperature near the heat storage units of hot heat accumulation entrance 18 ends, and point grade that realizes heat stores, and can also, at utmost from heat accumulation outlet output cold air, recycle as cooling medium simultaneously.
Described heat exchange coil 16a-16c is two heat exchange coils, and the heat exchange coil 14a that is provided with described heat accumulation entrance 18 is also provided with heat exchange outlet 24, and the heat exchange coil 14c that is provided with described heat accumulation outlet 20 is provided with heat exchange import.
In the thermal release stage, there is compressed air to be heated to flow into from the heat exchange import 24 of heat-storing device.First compressed air to be heated carries out heat exchange with the minimum heat storage units 14c of heat accumulation temperature, then carries out heat exchange with the higher heat storage units 14b of heat accumulation temperature.More and more higher to the temperature of heat storage units 14a compressed air from heat accumulation hot cell 14c, with the heat transfer intensity of follow-up heat storage units also more and more a little less than.After compressed air is heated to uniform temperature, no longer carry out heat exchange with heat storage units thereafter.Therefore, the heat of the undermost heat storage units 14c of heat-storing device is exported at first, and the heat storage units 14a heat exchange amount on heat-storing device top is few, and the heat wherein storing is still in high-grade state, and the high temperature compressed air air-flow of output also has stable temperature.Described heat-storing device, can either allow and farthest be discharged near the heat in the heat storage units of cool air inlet section, also allows the hot air temperature of output very stable simultaneously.
Described in each, in heat storage units, be equipped with oil filler 26, the oil drain out 28 of the liquid heat accumulating of heat conduction wet goods.The liquid heat accumulation material of heat accumulation wet goods using in thermal storage device, through after the operating period of the prescribed number of years, can be changed easily.Renewal process only need to use flexible pipe to connect the oil drain out 28 of heat storage units 14a-14c at different levels, and initial vacuum action is provided a little, and the heat accumulation wet goods heat accumulation liquid in heat storage units 14a-14c just can be because siphonage flows out automatically.Afterwards, then inject new heat accumulation wet goods liquid heat accumulating from oil filler 26, very convenient.
In each heat storage units 14a-14c, being provided with longitudinal section is the described heat accumulation chamber 30a-30b of ring-type.As shown in Figure 3, described heat accumulation chamber 30a-30b is rotated a circle and forms around axis by the unequal concave structure 32 of both sides height; The middle part of heat accumulation chamber 30a-30b is provided with the first through hole 34a-34b, described in every one deck, thermal insulation layer 12 is equipped with second through hole 36 corresponding with described the first through hole 34a-34b, described heat exchange coil 16a passes through after described the first through hole 34a, then is communicated with by nut 35 at the second through hole 36 places with described heat exchange coil 16b; In like manner, described heat exchange coil 16b is by after described the first through hole 34b, be communicated with by nut 35 at the second through hole 36 places with described heat exchange coil 16c again, and the other two ends of described heat exchange coil 16a, 16c are stretched out respectively housing 12 and are formed heat accumulation entrance 18, heat accumulation outlet 20, heat exchange outlet 22 and heat exchange import 24.
Described thermal insulation layer 12 be shaped as the circle matching with the profile of described heat accumulation chamber 30a-30b, and there is certain thickness; As shown in Figure 4, the wall of the second through hole 36 of thermal insulation layer 12 offers the opening 38 being communicated with described thermal insulation layer outer wall.In the time that thermal insulation layer is installed, described opening 38 can make thermal insulation layer 12 can avoid smoothly the straight section of heat exchange coil 16a-16c.
In described housing 10, be also provided with heat-insulation layer 40, described heat-insulation layer 40 surrounds all described heat storage units 14a-14c, and at the upper base of housing 10 and go to the bottom and be also respectively equipped with thermal insulation layer 12, can better play insulation effect.
Described heat-storing device is in heat accumulation process, and the heat transfer temperature difference that top-down heat storage units 14a-14c all can be larger with hot-air maintenance, can fully store the heat of hot-air; Because the heat absorption of end reservoir is less, can also export cold air from the port of export of heat exchange coil 16a-16c, this cold air can be used as cooling medium and recycles simultaneously; In the time that heat is derived, the heat of the heat storage units 14c of nearly cool air inlet end can farthest be derived, and can also maintain the stable of outlet air temperature simultaneously, ensures the quality of air after heating.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. a heat-storing device, it comprises housing, it is characterized in that, in described housing, be provided with at least one thermal insulation layer described housing is divided into at least two heat storage units, in each heat storage units, be provided with heat exchange coil, heat exchange coil in adjacent two described heat storage units is communicated with, and the heat exchange coil that is positioned at the heat storage units of described housing one end is provided with heat accumulation entrance, and the heat exchange coil that is positioned at the heat storage units of housing the other end is provided with heat accumulation outlet.
2. heat-storing device according to claim 1, is characterized in that, described heat exchange coil is two heat exchange coils, and the heat exchange coil that is provided with described heat accumulation entrance is also provided with heat exchange outlet, and the heat exchange coil that is provided with described heat accumulation outlet is provided with heat exchange import.
3. heat-storing device according to claim 1 and 2, is characterized in that, described thermal insulation layer distributes up and down, housing described in longitudinal subdivision.
4. heat-storing device according to claim 1, is characterized in that, is equipped with oil filler, oil drain out described in each in heat storage units.
5. according to the heat-storing device described in claim 1 or 2 any one, it is characterized in that, in each heat storage units, being provided with longitudinal section is the heat accumulation chamber of ring-type.
6. heat-storing device according to claim 5, it is characterized in that, the middle part in described heat accumulation chamber is provided with the first through hole, and described thermal insulation layer is provided with second through hole corresponding with described the first through hole, and adjacent two described heat exchange coils are communicated with by described the first through hole, described the second through hole.
7. heat-storing device according to claim 6, is characterized in that, the wall of described thermal insulation layer the second through hole offers the opening being communicated with described thermal insulation layer outer wall.
8. heat-storing device according to claim 6, is characterized in that, adjacent two described heat exchange coils are communicated with in described the second through hole by nut.
9. heat-storing device according to claim 5, is characterized in that, in described housing, is provided with heat-insulation layer, and described heat-insulation layer surrounds all described heat accumulations chamber.
10. heat-storing device according to claim 1, is characterized in that, the upper base of described housing and go to the bottom and be respectively equipped with thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414794.6A CN104180698B (en) | 2014-08-21 | 2014-08-21 | Heat-storing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414794.6A CN104180698B (en) | 2014-08-21 | 2014-08-21 | Heat-storing device |
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| Publication Number | Publication Date |
|---|---|
| CN104180698A true CN104180698A (en) | 2014-12-03 |
| CN104180698B CN104180698B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410414794.6A Active CN104180698B (en) | 2014-08-21 | 2014-08-21 | Heat-storing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976098A (en) * | 2017-12-12 | 2018-05-01 | 苏州科技大学 | A kind of circulating phase transition heat accumulation unit of novel air |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161882A (en) * | 1998-11-26 | 2000-06-16 | Hitachi Ltd | Heat/cold storage tank |
| CN102607307A (en) * | 2011-01-19 | 2012-07-25 | 刘阳 | Heat accumulation device |
| US20120255706A1 (en) * | 2011-04-05 | 2012-10-11 | Saied Tadayon | Heat Exchange Using Underground Water System |
| CN203224161U (en) * | 2013-04-28 | 2013-10-02 | 内蒙古太清光热能源有限公司 | Heat storage device |
| CN204007259U (en) * | 2014-08-21 | 2014-12-10 | 中国能源建设集团广东省电力设计研究院 | Heat-storing device |
-
2014
- 2014-08-21 CN CN201410414794.6A patent/CN104180698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161882A (en) * | 1998-11-26 | 2000-06-16 | Hitachi Ltd | Heat/cold storage tank |
| CN102607307A (en) * | 2011-01-19 | 2012-07-25 | 刘阳 | Heat accumulation device |
| US20120255706A1 (en) * | 2011-04-05 | 2012-10-11 | Saied Tadayon | Heat Exchange Using Underground Water System |
| CN203224161U (en) * | 2013-04-28 | 2013-10-02 | 内蒙古太清光热能源有限公司 | Heat storage device |
| CN204007259U (en) * | 2014-08-21 | 2014-12-10 | 中国能源建设集团广东省电力设计研究院 | Heat-storing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976098A (en) * | 2017-12-12 | 2018-05-01 | 苏州科技大学 | A kind of circulating phase transition heat accumulation unit of novel air |
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| CN104180698B (en) | 2016-03-02 |
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Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Applicant after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Applicant before: Guangdong Electric Power Design Institute of CEEC |
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Free format text: CORRECT: APPLICANT; FROM: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE TO: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE CO., LTD. |
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