CN110332597A - Passive type solar energy twin-stage phase-change thermal storage heating installation - Google Patents
Passive type solar energy twin-stage phase-change thermal storage heating installation Download PDFInfo
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- CN110332597A CN110332597A CN201910597906.9A CN201910597906A CN110332597A CN 110332597 A CN110332597 A CN 110332597A CN 201910597906 A CN201910597906 A CN 201910597906A CN 110332597 A CN110332597 A CN 110332597A
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- phase
- solar energy
- radiator
- change material
- passive type
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000012782 phase change material Substances 0.000 claims abstract description 28
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 5
- BDKLKNJTMLIAFE-UHFFFAOYSA-N 2-(3-fluorophenyl)-1,3-oxazole-4-carbaldehyde Chemical compound FC1=CC=CC(C=2OC=C(C=O)N=2)=C1 BDKLKNJTMLIAFE-UHFFFAOYSA-N 0.000 claims description 3
- 235000021314 Palmitic acid Nutrition 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 229940087562 sodium acetate trihydrate Drugs 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000000422 nocturnal effect Effects 0.000 description 1
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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/70—Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
-
- 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
- F24D2200/14—Solar energy
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geometry (AREA)
- Building Environments (AREA)
- Central Heating Systems (AREA)
Abstract
The invention discloses a kind of passive type solar energy twin-stage phase-change thermal storage heating installations, the device is made of solar thermal collector (1) and radiator (2), the solar thermal collector (1) realizes installation by bracket (7), and solar thermal collector (1) is connected by water supplying pipe (11) with return pipe (12) with radiator (2)；It is characterized in that, water supplying pipe (11) in the radiator (2) upper half fills high-melting-point phase-change material (9) outside, and the return pipe (12) in the radiator (2) lower half fills low melting point phase-change material (10) outside.Compared with prior art, heating installation of the invention absorbs solar energy by solar thermal collector on daytime, waste heat is stored in phase-change material by heating simultaneously, night discharges heat to indoor heating, while room temperature is constant round the clock for maintenance, the utilization efficiency for improving solar energy solves the problems, such as solar energy intermittence and unstability, has achieved the purpose that adequately and comprehensively to utilize solar energy.
Description
Technical field
The present invention relates to a kind of heating of heating installation more particularly to a kind of solar energy twin-stage phase-change accumulation energy of passive type dresses
It sets.
Background technique
At present in rural areas in our country, winter generally passes through coal heating, not only causes a large amount of consumption of non-renewable energy,
And there are serious problem of environmental pollutions.Solar energy is the most common renewable and clean energy resource, is applied to heating as heat source
System can reduce the consumption of non-renewable energy, be conducive to the development of low-carbon building and green building.Therefore, to respond energy-saving and emission-reduction,
Realize cleaning heating, passive solar heating technology has very big development potentiality.
Phase-changing energy-storing technology has the advantages that accumulation of energy amount is big, temperature fluctuation is small, the occupancy interior space is limited, performance is stable, will
It is to solve solar energy intermittence and instable important channel that energy accumulating technique is combined with solar heating.Phase-change material is white
It absorbs solar radiant heat, is stored by latent heat form, and night release is used for building, to improve nocturnal temperature water
It is flat, guarantee the reliability of heating.
Phase change energy storage technology mostly combines phase-change material with building enclosure for building in passive heating, to reach peak clipping
Effect that is valley-fill, reducing fluctuations in indoor temperature, but to solar energy use less efficient, heating effect is limited.
Currently, be divided into form using the system of solar heating from thermal-arrest it is active and two kinds of passive type, wherein passively
Formula system is mostly solar energy-air system, and structure is relatively easy, and investment is lower, but the utilization efficiency of solar radiation heat
Low, since the thermal capacitance of air is low, heat capacity is subject to certain restrictions.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of confessions of passive type solar energy twin-stage phase-change thermal storage
Heater device can reach on the basis of not consuming additional energy source, maintain ambient-temp-stable round the clock, and energy-saving and emission-reduction improve solar energy
The purpose of utilization efficiency.
A kind of passive type solar energy twin-stage phase-change thermal storage heating installation of the invention, the device is by 1 He of solar thermal collector
Radiator 2 forms, and the solar thermal collector 1 realizes installation by bracket 7, and solar thermal collector 1 and radiator 2 pass through water supply
Pipe 11 is connected with return pipe 12；High-melting-point phase-change material 9 is filled outside the water supplying pipe 11 of 2 upper half of radiator, is located at
Low melting point phase-change material 10 is filled outside the return pipe 12 of 2 lower half of radiator.
The water supplying pipe 11, return pipe 12 outdoor pipeline portions post electric-heating belt 5, and overcoating insulating layer 6.
The phase transition temperature of the high-melting-point phase-change material 9 is 50 DEG C~60 DEG C, the phase transformation of the low melting point phase-change material 10
Temperature is 25 DEG C~35 DEG C, and phase-change material is selected from paraffin, fatty acid, stearic acid, sodium acetate trihydrate, hexadecanoic acid, octadecyl alcolol
One of or it is a variety of.
Equipped with Round fin enhancing heat exchange in 2 inner pipe wall of radiator.
The multiple radiators of connection may be selected in a set of solar thermal collector 1.
Check-valves 3 is housed on water supplying pipe 11, night hot water adverse current is prevented, shut-off valve 4 is housed on return pipe 12, according to interior
Temperature controls streamflow regime by valve.
Compared with prior art, the present invention having the advantage that
1, the device absorbs solar energy by solar thermal collector on daytime, and waste heat is stored in phase while heating
Become in material, night discharges heat to indoor heating, and while room temperature is constant round the clock for maintenance, improve solar energy utilizes effect
Rate solves the problems, such as solar energy intermittence and unstability, has achieved the purpose that adequately and comprehensively to utilize solar energy；
2, operating cost is low.
Detailed description of the invention
Fig. 1 is passive type solar energy twin-stage phase-change thermal storage heating installation overall structure diagram of the invention；
Fig. 2 is heat spreader structures schematic diagram；
Appended drawing reference:
1, solar thermal collector, 2, radiator, 3, check-valves, 4, shut-off valve, 5, electric-heating belt, 6, insulating layer, 7, bracket,
8, exterior wall, 9, high-melting-point phase-change material, 10, low melting point phase-change material, 11, water supplying pipe, 12, return pipe.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 to Figure 2, passive type solar energy twin-stage phase-change thermal storage heating installation structure of the invention includes solar energy
Heat collector 1 and radiator 2, solar thermal collector 1 are mounted on exterior wall by bracket 7 at a certain angle, are located at 2 upper half of radiator
High-melting-point phase-change material 9 is filled outside the water supplying pipe 11 in portion, and low melting point phase transformation is filled outside the return pipe 12 of 2 lower half of radiator
Material 10.Solar thermal collector 1 is connected with radiator 2 by confession/return pipe, and check-valves 3 is housed on water supplying pipe, prevents night hot
Water countercurrently, is equipped with shut-off valve 4, controls streamflow regime by valve according to room temperature on return pipe.Water supplying pipe, return pipe
Outdoor pipeline portions post electric-heating belt 5, and overcoating insulating layer 6, and it is anti-that electric-heating belt 5 is opened when outdoor temperature is lower than 0 DEG C
Only pipeline freezes.
The device limits weather without excessive, adaptable, room temperature can be made to protect according to weather different adjustment valve
It holds in a certain range and is unlikely to be subcooled or overheat, it is more preferable in the regional heating effect of solar energy abundance.
Wherein:
The phase transition temperature of high-melting-point phase-change material 9 is 50 DEG C~60 DEG C, and the phase transition temperature of low melting point phase-change material 10 is 25
DEG C~35 DEG C, the phase-change material is in paraffin, fatty acid, stearic acid, sodium acetate trihydrate, hexadecanoic acid, octadecyl alcolol
It is one or more.According to supply and return water temperature difference, using the different phase-change material of two kinds of phase transition temperatures, it can sufficiently be collected for return water
Heat improves solar energy utilization ratio.
Solar thermal collector 1 sits in the north facing the south setting, consistent with the latitude in locating geographical location with the angle of horizontal plane, to mention
The collecting efficiency of high solar heat collector.
Equipped with Round fin enhancing heat exchange in 2 inner pipe wall of radiator.
According to indoor heat load difference, a set of solar thermal collector can connect multiple radiators.
The course of work of the invention is as follows:
Energy storage operating condition: water absorbs solar energy in solar thermal collector 1, and temperature increases, and volume expansion, density reduces, because
This enters radiator 2 through check-valves 3 along water supply line, first by high temperature water supply heat storage in high-melting-point phase-change material 9, simultaneously
To indoor heating, after water temperature reduces, the heat of low-temperature return water is further stored in low melting point phase-change material 10, return water again into
Enter solar thermal collector 1 to be heated.
Release energy operating condition: high-melting-point phase-change material 9 passes through thermal convection and heat first by heat transfer to in-pipe flow heat release
Radiation heats to interior, when the heat stored in high-melting-point phase-change material 9 exhausts, when water temperature further decreases, and low melting point
10 heat release of phase-change material, continues as indoor heating.
Check-valves 3 is for preventing the water heated after phase change material releases heat from reversely floing back towards solar thermal collector 1 due to density reasons
Cause heat loss.Shut-off valve 4 is used to adjust water flow according to room temperature, under energy storage operating condition, can progressively close off when room temperature increases
Valve reduces flow, gradually can increase flow by Open valve when room temperature reduces；It releases under energy operating condition, closes valve, prevent hot water
Heat loss is caused with the heat exchange of 1 side cold water of solar thermal collector.
Claims (6)
1. a kind of passive type solar energy twin-stage phase-change thermal storage heating installation, the device is by solar thermal collector (1) and radiator (2)
Composition, the solar thermal collector (1) realize installation by bracket (7), and solar thermal collector (1) and radiator (2) pass through confession
Water pipe (11) is connected with return pipe (12)；It is characterized in that, the water supplying pipe (11) for being located at the radiator (2) upper half is filled outside
High-melting-point phase-change material (9), the return pipe (12) for being located at the radiator (2) lower half fill low melting point phase-change material outside
(10)。
2. a kind of passive type solar energy twin-stage phase-change thermal storage heating installation as described in claim 1, which is characterized in that the confession
Water pipe (11), return pipe (12) outdoor pipeline portions post electric-heating belt (5), and overcoating insulating layer (6).
3. a kind of passive type solar energy twin-stage phase-change thermal storage heating installation as described in claim 1, which is characterized in that the height
The phase transition temperature of fusing point phase-change material (9) is 50 DEG C~60 DEG C, and the phase transition temperature of the low melting point phase-change material (10) is 25 DEG C
~35 DEG C, phase-change material be selected from one of paraffin, fatty acid, stearic acid, sodium acetate trihydrate, hexadecanoic acid, octadecyl alcolol or
It is a variety of.
4. a kind of passive type solar energy twin-stage phase-change thermal storage heating installation as described in claim 1, which is characterized in that radiator
(2) equipped with Round fin enhancing heat exchange in inner pipe wall.
5. a kind of passive type solar energy twin-stage phase-change thermal storage heating installation as described in claim 1, which is characterized in that Yi Taotai
The multiple radiators of connection may be selected in positive energy heat collector (1).
6. a kind of passive type solar energy twin-stage phase-change thermal storage heating installation as described in claim 1, which is characterized in that the confession
Check-valves (3) are housed on water pipe (11), prevent night hot water adverse current；Shut-off valve (4) are housed on the return pipe (12), according to room
Interior temperature controls streamflow regime by valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910597906.9A CN110332597A (en) | 2019-07-04 | 2019-07-04 | Passive type solar energy twin-stage phase-change thermal storage heating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910597906.9A CN110332597A (en) | 2019-07-04 | 2019-07-04 | Passive type solar energy twin-stage phase-change thermal storage heating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110332597A true CN110332597A (en) | 2019-10-15 |
Family
ID=68144297
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910597906.9A Pending CN110332597A (en) | 2019-07-04 | 2019-07-04 | Passive type solar energy twin-stage phase-change thermal storage heating installation |
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| Country | Link |
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| CN (1) | CN110332597A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728789A (en) * | 2021-01-19 | 2021-04-30 | 太原理工大学 | Phase-change heat storage and exchange integrated water tank |
| CN115234969A (en) * | 2022-08-04 | 2022-10-25 | 重庆大学 | Solar heat collection heating method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115389A (en) * | 2012-12-27 | 2013-05-22 | 重庆大学 | Solar energy combined type phase-change heat storage heating system |
| KR20140006374A (en) * | 2012-07-04 | 2014-01-16 | 포항공과대학교 산학협력단 | Heating apparatus using passive solar heating with energy save function |
| CN207570148U (en) * | 2017-08-16 | 2018-07-03 | 日出东方太阳能股份有限公司 | A kind of solar energy heat-collecting heat-storage system |
-
2019
- 2019-07-04 CN CN201910597906.9A patent/CN110332597A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140006374A (en) * | 2012-07-04 | 2014-01-16 | 포항공과대학교 산학협력단 | Heating apparatus using passive solar heating with energy save function |
| CN103115389A (en) * | 2012-12-27 | 2013-05-22 | 重庆大学 | Solar energy combined type phase-change heat storage heating system |
| CN207570148U (en) * | 2017-08-16 | 2018-07-03 | 日出东方太阳能股份有限公司 | A kind of solar energy heat-collecting heat-storage system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728789A (en) * | 2021-01-19 | 2021-04-30 | 太原理工大学 | Phase-change heat storage and exchange integrated water tank |
| CN115234969A (en) * | 2022-08-04 | 2022-10-25 | 重庆大学 | Solar heat collection heating method |
| CN115234969B (en) * | 2022-08-04 | 2023-11-24 | 重庆大学 | Solar heat collection heating method |
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