CN211953322U - Heat pump set suitable for greenhouse - Google Patents
Heat pump set suitable for greenhouse Download PDFInfo
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- CN211953322U CN211953322U CN201922489555.8U CN201922489555U CN211953322U CN 211953322 U CN211953322 U CN 211953322U CN 201922489555 U CN201922489555 U CN 201922489555U CN 211953322 U CN211953322 U CN 211953322U
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- 239000007788 liquid Substances 0.000 claims description 41
- 238000001035 drying Methods 0.000 claims description 15
- 238000010257 thawing Methods 0.000 abstract description 6
- 239000002918 waste heat Substances 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000003570 air Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001464837 Viridiplantae Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
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Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The utility model provides a heat pump set suitable for greenhouse, this heat pump set includes: the heat exchanger comprises a compressor, a first heat exchange unit, a second heat exchange unit, a third heat exchange unit and an auxiliary heat exchange unit; the compressor, the first heat exchange unit, the third heat exchange unit and the auxiliary heat exchange unit are sequentially connected in series to form a first heat exchange loop; the compressor, the first heat exchange unit, the second heat exchange unit and the auxiliary heat exchange unit are sequentially connected in series to form a second heat exchange loop. The heat pump unit can switch the working modes of the two heat exchange loops according to the temperature change in the greenhouse, improve the energy efficiency of the heat pump unit by utilizing the waste heat in the greenhouse and adjust the temperature in the greenhouse; in addition, the heat pump unit has a defrosting function simultaneously to defrost the outdoor third heat exchange unit.
Description
Technical Field
The utility model relates to a heat energy engineering heat pump technical field especially relates to a heat pump set.
Background
With the continuous innovation of air source heat pump unit technology, the air source heat pump unit is more and more successfully applied to the north to solve the problem of heating in winter, the conventional air source heat pump unit usually extracts energy from outdoor ambient air at the ambient temperature of-20 ℃ to 10 ℃, and the higher the ambient temperature is, the higher the unit energy efficiency is. How to improve the energy efficiency of the unit is always the direction that the industry engineers continuously pursue and explore.
The greenhouse technology is gradually popularized and applied in large scale in the north in winter, the temperature for green plant growth in the greenhouse is about 23-25 ℃, the temperature is unfavorable for plant growth after the temperature is exceeded, the traditional technology generally achieves the heat dissipation effect by ventilating the greenhouse when the temperature in the greenhouse exceeds 30 ℃, and energy in the temperature range is dissipated into the air. At present, the air source heat pump technology can not only effectively solve the temperature energy within a range of more than 30 ℃ in a greenhouse, but also realize the purposes of energy conservation, environmental protection and efficiency improvement in the operation of the air source heat pump.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat pump set suitable for greenhouse, this heat pump set includes: the heat exchanger comprises a compressor, a first heat exchange unit, a second heat exchange unit, a third heat exchange unit and an auxiliary heat exchange unit; the compressor, the first heat exchange unit, the third heat exchange unit and the auxiliary heat exchange unit are positioned outside the greenhouse, and the second heat exchange unit is positioned in the greenhouse; the second heat exchange unit and the third heat exchange unit are connected in parallel and then connected in series with the compressor, the first heat exchange unit and the auxiliary heat exchange unit to form two heat exchange loops. The heat pump unit can switch the working modes of the two heat exchange loops according to the temperature change in the greenhouse, improve the energy efficiency of the heat pump unit by utilizing the waste heat in the greenhouse and adjust the temperature in the greenhouse; in addition, the heat pump unit has a defrosting function simultaneously to defrost the outdoor third heat exchange unit. The utility model discloses this heat pump set's operating method is disclosed simultaneously.
According to the utility model, a heat pump unit suitable for a greenhouse is provided,
the heat exchanger comprises a compressor, a first heat exchange unit, a second heat exchange unit, a third heat exchange unit and an auxiliary heat exchange unit; the compressor, the first heat exchange unit and the auxiliary heat exchange unit are sequentially connected in series to form a first heat exchange loop;
the second heat exchange unit and the third heat exchange unit are connected in parallel and then are connected in series with the main passage to form a second heat exchange loop.
According to the utility model discloses a heat pump set's embodiment wherein still includes: the first electronic expansion valve and the first one-way valve are connected in parallel and then connected in series with the first port of the second heat exchange unit;
and the first electromagnetic valve and the second one-way valve are connected in parallel and then connected in series with the second port of the second heat exchange unit.
According to the utility model discloses a heat pump set's embodiment wherein still includes:
the second electronic expansion valve and the third one-way valve are connected in parallel and then connected in series with the first port of the third heat exchange unit;
and the second electromagnetic valve and the fourth one-way valve are connected in parallel and then connected in series with the second port of the second heat exchange unit.
According to the utility model discloses a heat pump set's embodiment, wherein, the export of compressor sets up the four-way reversing valve, and the import of compressor sets up vapour and liquid separator.
According to the embodiment of the heat pump unit of the utility model, a fifth one-way valve, a liquid storage device and a drying filter are arranged between the first heat exchange unit and the auxiliary heat exchange unit in series in sequence;
and a third electronic expansion valve is arranged between the first heat exchange unit and the second heat exchange unit.
According to the utility model discloses a heat pump set's embodiment, wherein, first heat transfer unit is shell and tube heat exchanger, and second heat transfer unit and third heat transfer unit are fin heat exchanger, and supplementary heat transfer unit is plate heat exchanger.
According to the utility model discloses a heat pump set's embodiment, wherein, the export of compressor is connected with the first port of four-way reversing valve, the entry of compressor and vapour and liquid separator's exit linkage.
According to the utility model discloses a heat pump set's embodiment, wherein, the second port of four-way reversing valve and vapour and liquid separator's entry linkage.
According to the utility model discloses a heat pump set's embodiment, wherein, the third port of four-way reversing valve and shell and tube heat exchanger's entry linkage.
According to the utility model discloses a heat pump set's embodiment, wherein, fifth check valve, reservoir and drier-filter are connected gradually to shell and tube heat exchanger's export.
The utility model discloses a heat pump set suitable for greenhouse and working method's beneficial effect does:
(1) the energy efficiency of the heat pump unit can be improved by utilizing the waste heat in the greenhouse;
(2) the temperature in the greenhouse can be adjusted within a reasonable range through heat exchange of the indoor fin heat exchanger;
(3) the indoor fin heat exchanger is positioned in the greenhouse, defrosting is not needed, the use effect is improved, and energy consumption is saved;
(4) the heat exchange loop is provided with a plurality of electronic expansion valves, so that the equipment is more stable and reliable in operation.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic system diagram of an embodiment of a heat pump unit according to the present invention.
Description of reference numerals:
the system comprises a compressor 1, a four-way reversing valve 2, a shell and tube heat exchanger 3, a check valve 4, a liquid storage device 5, a drying filter 6, a plate heat exchanger 7, an electronic expansion valve 701, an electronic expansion valve 801, a finned heat exchanger 802, a check valve 803, an electromagnetic valve 804, a check valve 805, an electronic expansion valve 901, a finned heat exchanger 902, a check valve 903, an electromagnetic valve 904, a check valve 905, a gas-liquid separator 10 and an electronic expansion valve 11.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it can be seen that "first" and "second" are only used for convenience of expression and should not be understood as limitations of the embodiments of the present invention, and the following embodiments do not describe this any more.
Based on the above purposes, the heat pump unit suitable for the greenhouse. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1, an embodiment of a heat pump unit suitable for a greenhouse according to the present invention may include a compressor 1, a shell-and-tube heat exchanger 3, an indoor fin heat exchanger 802, an outdoor fin heat exchanger 902, and a plate heat exchanger 7. The outlet of the compressor 1 is connected with the first port of the four-way reversing valve 2, the second port of the four-way reversing valve 2 is connected with the inlet of the gas-liquid separator 10, and the outlet of the gas-liquid separator 10 is connected with the inlet of the compressor 1; a third port of the four-way reversing valve 2 is connected with an inlet of the shell-and-tube heat exchanger 3, an outlet of the shell-and-tube heat exchanger 3 is sequentially connected with a fifth one-way valve 4, a liquid reservoir 5 and a drying filter 6, the drying filter 6 is connected with a first port of a plate heat exchanger 7, and a third electronic expansion valve 11 is arranged between a second port of the plate heat exchanger 7 and the outlet of the shell-and-tube heat exchanger 3; the compressor 1, the four-way reversing valve 2, the gas-liquid separator 10, the shell and tube heat exchanger 3, the reservoir 5, the drying filter 6 and the plate heat exchanger 7 are connected to form a main passage. The first electronic expansion valve 801 is connected with a first one-way valve 805 in parallel and then connected with a first port of the indoor finned heat exchanger 802, and the first electromagnetic valve 804 is connected with a second one-way valve 803 in parallel and then connected with a second port of the indoor finned heat exchanger 802; the second electronic expansion valve 901 is connected in parallel with a third check valve 905 and then connected with a first port of the outdoor finned heat exchanger 902, and the second electromagnetic valve 904 is connected in parallel with a fourth check valve 903 and then connected with a second port of the outdoor finned heat exchanger 902. The indoor finned heat exchanger 802 and the outdoor finned heat exchanger 902 are connected in parallel and then connected in series between the fourth port of the four-way reversing valve 2 on the main passage and the second port of the plate heat exchanger 7, so that two indoor and outdoor heat exchange loops are formed.
The indoor finned heat exchanger 802 has the working process:
when the indoor temperature sensing bulb of the heat pump unit detects that the temperature in the greenhouse is higher than 30 ℃, the heat pump unit switches the indoor fin heat exchanger to work. Specifically, the first solenoid valve 804 and the second solenoid valve 904 are closed, the first electronic expansion valve 801 is powered on and opened, and the second electronic expansion valve 901 and the third electronic expansion valve 11 are not powered on; the low-pressure liquid refrigerant is compressed into high-temperature high-pressure vapor refrigerant by a compressor 1, the high-temperature high-pressure vapor refrigerant enters a shell and tube heat exchanger 3 through a four-way reversing valve 2, the high-temperature high-pressure refrigerant exchanges heat with water in the shell and tube heat exchanger 3 to heat the water, the heated water can be used as domestic hot water or heating, the refrigerant after heat dissipation is liquid and enters a liquid reservoir 5 through a fifth one-way valve 4, the consumption of the liquid refrigerant can be adjusted according to energy efficiency in the liquid reservoir 5, the refrigerant flows out of the liquid reservoir 5 and enters a drying filter 6, water vapor in the refrigerant can be removed by the drying filter 6, the refrigerant flows out of the drying filter 6 and enters a plate heat exchanger 7 to exchange heat with air in the plate heat exchanger 7, a part of the refrigerant after heat absorption is vaporized again, and enters an indoor fin heat exchanger 802 after throttling and pressure control through a first electronic expansion, the redundant heat in the greenhouse is absorbed, the temperature in the greenhouse is reduced to be below 25 ℃, then the refrigerant enters the gas-liquid separator 10 through the first one-way valve 805 and the four-way reversing valve 2, the gas-liquid separator 10 separates the liquid refrigerant from the vapor refrigerant, the refrigerant flowing back to the compressor 1 is guaranteed not to contain the liquid refrigerant, and at this time, the indoor heat exchange loop completes one heat exchange working cycle.
Working flow of the outdoor finned heat exchanger 902:
when the indoor temperature sensing bulb of the heat pump unit detects that the temperature in the greenhouse is lower than 25 ℃, the heat pump unit switches the outdoor fin heat exchanger to work. Specifically, the first solenoid valve 804 and the second solenoid valve 904 are closed, the second electronic expansion valve 901 is powered on and opened, and the first electronic expansion valve 801 and the third electronic expansion valve 11 are not powered on; the low-pressure liquid refrigerant is compressed into high-temperature high-pressure vapor refrigerant by a compressor 1, the high-temperature high-pressure vapor refrigerant enters a shell and tube heat exchanger 3 through a four-way reversing valve 2, the high-temperature high-pressure refrigerant exchanges heat with water in the shell and tube heat exchanger 3 to heat the water, the heated water can be used as domestic hot water or heating, the refrigerant after heat dissipation is liquid and enters a liquid reservoir 5 through a fifth one-way valve 4, the use amount of the liquid refrigerant can be adjusted in the liquid reservoir 5 according to energy efficiency, the refrigerant flows out of the liquid reservoir 5 and enters a drying filter 6, the drying filter 6 can remove water vapor in the refrigerant, the refrigerant flows out of the drying filter 6 and enters a plate heat exchanger 7 to exchange heat with air in the plate heat exchanger 7, a part of the refrigerant after heat absorption is vaporized again, and enters an outdoor fin heat exchanger 902 after throttling and pressure control through a second electronic expansion valve, the refrigerant exchanges heat with outdoor air, then enters the gas-liquid separator 10 through the fourth one-way valve 903 and the four-way reversing valve 2, the gas-liquid separator 10 separates liquid refrigerant from vapor refrigerant, and the refrigerant flowing back to the compressor 1 is guaranteed not to contain the liquid refrigerant, so that an outdoor heat exchange loop finishes a heat exchange working cycle.
Defrosting process of outdoor finned heat exchanger 902:
and when the outdoor temperature sensing bulb of the heat pump unit detects that the temperature outside the greenhouse is between-15 ℃ and 5 ℃, the heat pump unit enters a defrosting mode. Specifically, the first electromagnetic valve 804 is closed, the second electromagnetic valve 904 is opened, the first electronic expansion valve 801 and the second electronic expansion valve 901 cannot be closed by electricity, the third electronic expansion valve 11 is opened by electricity, a low-pressure liquid refrigerant is compressed into a high-temperature high-pressure vaporous refrigerant by the compressor 1, the high-temperature high-pressure vaporous refrigerant enters the outdoor fin heat exchanger 902 through the four-way reversing valve 2 and the second electromagnetic valve 904, the high-temperature vaporous refrigerant exchanges heat with the outdoor fin heat exchanger 902 to remove frost on outdoor fins, the refrigerant after heat dissipation is in a liquid state and enters the liquid reservoir 5 through the third one-way valve 905, the consumption of the liquid refrigerant in the liquid reservoir 5 can be adjusted according to energy efficiency, the refrigerant flows out of the liquid reservoir 5 and enters the drying filter 6, the drying filter 6 can remove water vapor in the refrigerant, the refrigerant flows out of the drying filter 6 and enters the plate heat exchanger 7 to exchange heat with air in the plate, after absorbing heat, a part of refrigerant is vaporized again, and after throttling and pressure control are performed through the third electronic expansion valve 11, the refrigerant enters the shell and tube heat exchanger 3, the four-way reversing valve 2 and the gas-liquid separator 10 and returns to the compressor 1, and defrosting loop circulation is completed.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the disclosure as defined by the appended claims. Although elements disclosed in the embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to suggest that the scope of the disclosure of embodiments of the present invention (including the claims) is limited to these examples; within the idea of embodiments of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.
Claims (10)
1. A heat pump unit is characterized in that,
the heat exchanger comprises a compressor (1), a first heat exchange unit (3), a second heat exchange unit (802), a third heat exchange unit (902) and an auxiliary heat exchange unit (7);
the compressor (1), the first heat exchange unit (3), the third heat exchange unit (902) and the auxiliary heat exchange unit (7) are sequentially connected in series to form a first heat exchange loop;
the compressor (1), the first heat exchange unit (3), the second heat exchange unit (802) and the auxiliary heat exchange unit (7) are sequentially connected in series to form a second heat exchange loop.
2. The heat pump unit of claim 1,
further comprising: the first electronic expansion valve (801) and the first one-way valve (805) are connected in parallel and then connected in series with a first port of the second heat exchange unit (802);
and the first electromagnetic valve (804) and the second one-way valve (803) are connected in parallel and then connected in series with the second port of the second heat exchange unit (802).
3. The heat pump unit of claim 1, further comprising:
the second electronic expansion valve (901) and the third one-way valve (905) are connected in parallel and then connected in series with the first port of the third heat exchange unit (902);
and the second electromagnetic valve (904) and the fourth check valve (903) are connected in parallel and then connected in series with the second port of the second heat exchange unit (802).
4. The heat pump unit of claim 1,
the outlet of the compressor (1) is provided with a four-way reversing valve (2), and the inlet of the compressor (1) is provided with a gas-liquid separator (10).
5. The heat pump unit of claim 1,
a fifth one-way valve (4), a liquid storage device (5) and a drying filter (6) are sequentially connected in series between the first heat exchange unit (3) and the auxiliary heat exchange unit (7);
and a third electronic expansion valve (11) is arranged between the first heat exchange unit (3) and the second heat exchange unit (802).
6. A heat pump unit according to claim 4,
the first heat exchange unit (3) is a shell-and-tube heat exchanger, the second heat exchange unit (802) and the third heat exchange unit (902) are fin heat exchangers, and the auxiliary heat exchange unit (7) is a plate heat exchanger.
7. A heat pump unit according to claim 4, characterised in that the outlet of the compressor (1) is connected to the first port of the four-way reversing valve (2), and the inlet of the compressor (1) is connected to the outlet of the gas-liquid separator (10).
8. Heat pump unit according to claim 7, characterised in that the second port of the four-way reversing valve (2) is connected to the inlet of a gas-liquid separator (10).
9. A heat pump unit according to claim 8 characterised in that the third port of the four-way reversing valve (2) is connected to the inlet of a shell and tube heat exchanger.
10. A heat pump unit according to claim 9, characterised in that the outlet of the shell and tube heat exchanger is connected in sequence with a fifth one-way valve (4), a reservoir (5) and a dry filter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922489555.8U CN211953322U (en) | 2019-12-31 | 2019-12-31 | Heat pump set suitable for greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922489555.8U CN211953322U (en) | 2019-12-31 | 2019-12-31 | Heat pump set suitable for greenhouse |
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| Publication Number | Publication Date |
|---|---|
| CN211953322U true CN211953322U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922489555.8U Active CN211953322U (en) | 2019-12-31 | 2019-12-31 | Heat pump set suitable for greenhouse |
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| CN (1) | CN211953322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059796A (en) * | 2019-12-31 | 2020-04-24 | 北京华誉能源技术股份有限公司 | Heat pump unit suitable for greenhouse and working method thereof |
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2019
- 2019-12-31 CN CN201922489555.8U patent/CN211953322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059796A (en) * | 2019-12-31 | 2020-04-24 | 北京华誉能源技术股份有限公司 | Heat pump unit suitable for greenhouse and working method thereof |
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