CN102777990A - Air conditioning unit system of water source heat pump in reservoir for underground hydropower station - Google Patents

Air conditioning unit system of water source heat pump in reservoir for underground hydropower station Download PDF

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Publication number
CN102777990A
CN102777990A CN2012102297615A CN201210229761A CN102777990A CN 102777990 A CN102777990 A CN 102777990A CN 2012102297615 A CN2012102297615 A CN 2012102297615A CN 201210229761 A CN201210229761 A CN 201210229761A CN 102777990 A CN102777990 A CN 102777990A
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water
valve
cooler
electric control
pipeline
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CN2012102297615A
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Chinese (zh)
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CN102777990B (en
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李安桂
司鹏飞
张莹
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西安建筑科技大学
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/40Geothermal heat-pumps

Abstract

The invention discloses an air conditioning unit system of a water source heat pump in a reservoir applicable to an underground hydropower station. The air conditioning unit system comprises a water intake system, a direct cold-supplying system, a heat-pump cold-heat supplying system and an air treatment system, wherein the water intake system consists of a water intake head, a water intake pipe, a cleaner and a water intake pump; the direct cold-supplying system consists of a first electric adjusting valve, a first surface cooler, a second electric adjusting valve and pipelines connected between the water intake system and the parts; the heat-pump cold-heat supplying system consists of a first heat exchanger, a compressor, a four-way valve, a second heat exchanger, a chilled water circulating pump, a second surface cooler, a first expansion valve, a first one-way valve, a second expansion valve, a second one-way valve, a third electric adjusting valve, a fourth electric valve and pipelines connected among the parts; and the air treatment system consists of the first surface cooler, the second surface cooler and a rotary-wheel dehumidifying mechanism. The air conditioning unit system disclosed by the invention has the advantages that good operation of various functions such as cooling, heating and dehumidifying of cavern groups of the underground hydropower station in the whole year can be ensured, and a great amount of energy is saved in the transition season.

Description

The reservoir water source heat pump air-conditioner machine system of a kind of underground power station cavern

Technical field

The present invention relates to a kind of surface water source heat pump central air-conditioning unit, the reservoir water resource heat pump machine system of particularly a kind of underground power station cavern thermal and humidity environment regulation and control is specially adapted to the Underground Excavation Cluster of Hydropower Station working environment.

Background technology

The power station has that installed capacity is big, machine is organized a performance number is many, electrical equipment many and caloric value big, underground chamber passes wet characteristics such as remarkable, so annual most of time need be carried out cooling and dehumidifying to the cavity group room air, has caused very big energy resource consumption thus.

Utilizing surface water (river, lake water, seawater) or underground water to take the condensation heat extraction as cooling water away from condenser, is the Refrigeration Technique of an energy-saving low-carbon.Present used surface water source heat pump working principle of said set figure such as Fig. 1 and shown in Figure 2.The fundamental diagram of system that wherein Fig. 1 provides when being cooling condition, the fundamental diagram of system that Fig. 2 provides when being heating condition.During refrigeration; Through the refrigeration working medium of compressor compresses, get into the condenser heat release, the liberated heat water (surface water) that is cooled is taken away; Then through the electric expansion valve adiabatic expansion; The cryogenic fluid that produces directly gets into evaporimeter and produces cold water (sending into the user freezes), and the machine that is compressed again thereafter sucks and compresses, and so moves in circles.When heating; Refrigeration working medium through compression; Get into the condenser heat release and produce high-temperature-hot-water (send into the user and carry out heat supply), then through the electric expansion valve adiabatic expansion, the cryogenic fluid of generation directly gets into evaporimeter and draws the heat in the surface water; Thereafter the working medium machine that is compressed again sucks and compresses, and so moves in circles.

One Chinese patent application (application number is 200610102097.2) discloses the efficient water source heat pump units of a kind of suitable river, river, lake, the low water temperature in sea; Its temperature according to the input water source is confirmed the evaporating temperature and the condensation temperature of suitable first order water resource heat pump; For second level water resource heat pump provides suitable water source input temp, thereby solved water source heat pump units in the operating efficiency problem that is lower than under 2 ℃ the low-temperature water source.

One Chinese patent application (application is 201110033862.0) discloses a kind of source of seawater water-loop heat pump device that is used for air-conditioning system; This device carries out the exchange heat between heat transferring medium and the seawater through a seawater plate type heat exchanger; Avoided seawater to get into the water-water heat pump unit, solution be the problem of seawater to the water source heat pump units equipment corrosion.

One Chinese patent application (application number is 03112165.9) discloses a kind of source pump of source of seawater capable of using, and seawater is walked tube side during its work, and working medium is walked shell side.The part of seawater process can make things convenient for the feasible preservative treatment of carrying out, and has avoided being difficult for antiseptic shell side, the anticorrosion problem that remains the seawater thermal source of solution.

Do not see at present special surface water source heat pump unit as yet to the regulation and control of underground power station ambient temperature and humidity.In fact, the regulation and control of underground power station humiture environment have its particularity, mainly show following aspect: the one, and it often still need freeze with the waste heat of equipment generations such as elimination generating set and surplus the wetting that wall distributes at transition season; The 2nd, have huge water source (reservoir water) around the power station and can be used as Cooling and Heat Source; The 3rd, reservoir water is when the certain water depth of transition season, and water temperature is (to be the annual water temperature curve map of certain underground Hydropower Plant Reservoir water different depth like Fig. 3) about 11 ℃, and this is comparatively suitable free cold supply water temperature; The 4th, the underground hole group position is lower, and the water intaking pump energy consumption is lower, and the economy of free cold supply is higher.But it during the broiling summer, because load strengthens, water temperature uprises, and free cold supply is then unsuitable, when the winter of cold, needs heat supply simultaneously yet.And during free cold supply, because water temperature does not reach the required dew-point temperature of dehumidifying, dehumidifying is existing problems also.

Summary of the invention

Defective or deficiency to the above-mentioned background technology exists the objective of the invention is to, and a kind of reservoir water source heat pump air-conditioner machine system of underground power station is provided.

In order to realize above-mentioned task, the present invention adopts following technical solution to be achieved:

A kind of reservoir water source heat pump air-conditioner unit of underground power station is characterized in that, constitutes by water intake system, direct cold supply system, heat pump cold and heat supply system and air treatment system, wherein:

Water intake system comprises water intaking pump, the dirt separator that pump house is installed; Intake pipe and water intake; Wherein, water intaking pump one end is connected with the node pipeline of first electric control valve with the parallel connection of the 3rd electric control valve, and the water intaking pump other end connects dirt separator through pipeline; Dirt separator connects water intake through intake pipe, and water intake places under the reservoir lowest water level;

Directly cold supply system comprises first electric control valve, first surface cooler, second electric control valve and the pipeline that is connected with water intake system thereof; Wherein, One end of first electric control valve is connected with water intake system; The other end is connected with first surface cooler, and the other end of first surface cooler is connected with second electric control valve, and the other end of second electric control valve is connected on the water return pipeline;

Heat pump cold and heat supply system comprises first heat exchanger, compressor, cross valve, second heat exchanger, chilled water water circulating pump, second surface cooler, first expansion valve (14), first check valve, second expansion valve, second check valve, the 3rd electric control valve, the 4th electric control valve and interconnective pipeline thereof; Wherein, One end of the 3rd electric control valve is connected on the pipeline that connects first electric control valve and water intaking pump discharge through pipeline, and the other end is connected on first heat exchanger through pipeline; The two ends of the 4th electric control valve are connected on first heat exchanger and the return pipe through pipeline respectively; First heat exchanger, second heat exchanger are connected through pipeline with the two ends of cross valve respectively, and the two ends of compressor are connected through pipeline with the other two ends of cross valve; First heat exchanger and second heat exchanger are directly through pipeline connect first expansion valve and second expansion valve; First check valve is parallelly connected with first expansion valve, and second check valve is parallelly connected with second expansion valve; Second heat exchanger is connected through pipeline with second surface cooler, chilled water circulating pump and is formed loop;

Air treatment system comprises air cleaner, first surface cooler, second surface cooler and rotary dehumidifier, wherein, first surface cooler and second surface cooler is installed successively after air cleaner, and rotary dehumidifier is positioned at after second surface cooler.

The reservoir water source heat pump air-conditioner machine system of underground power station of the present invention, can guarantee the underground power station cavity group the annual period satisfy freeze, heat, the good operation of various functions such as dehumidifying, and in transition season saving mass energy.

Description of drawings

The fundamental diagram of system when Fig. 1 is traditional cooling condition.

The fundamental diagram of system when Fig. 2 is traditional heating condition.

The annual water temperature curve map of the underground Hydropower Plant Reservoir water of Fig. 3 different depth.

Fig. 4 is the reservoir water source heat pump air-conditioner machine system architecture principle schematic of underground power station of the present invention.

Below in conjunction with accompanying drawing particular content of the present invention is done further explain.

The specific embodiment

Referring to Fig. 4, present embodiment provides a kind of reservoir water source heat pump air-conditioner machine system of underground power station, comprises following four parts:

The water intake system that constitutes by water intake 1, intake pipe 2, dirt separator 3, water intaking pump 4; Wherein, Water intaking pump 4 one ends are connected through pipeline with the node of first electric control valve 6 with the 3rd electric control valve 5 parallel pipelines; Water intaking pump 4 other ends and dirt separator 3 are connected through pipeline, and dirt separator 3 is connected through intake pipe 2 with water intake 1, and water intake 1 places under the reservoir lowest water level.

By first electric control valve 6, first surface cooler 7, second electric control valve 10 and between the direct cold supply system that constitutes of the pipeline that connects; Wherein, an end of first electric control valve 6 is connected with water intake system, and the other end is connected with first surface cooler 7, and the other end of first surface cooler 7 is connected with second electric control valve 10, and the other end of second electric control valve 10 is connected on the water return pipeline.

The heat pump cold and heat supply system that constitutes by first heat exchanger 18, compressor 19, cross valve 20, second heat exchanger 13, chilled water water circulating pump 12, second surface cooler 8, first expansion valve 14, first check valve 15, second expansion valve 17, second check valve 16, the 3rd electric control valve 5, the 4th electric control valve 11 and interconnective pipeline thereof;

Wherein, One end of the 3rd electric control valve 5 is connected on the pipeline that connects first electric control valve 6 and 4 outlets of water intaking pump through pipeline; The other end is connected on first heat exchanger 18 through pipeline, and the two ends of the 4th electric control valve 11 are connected on first heat exchanger 18 and the return pipe through pipeline respectively; First heat exchanger 18, second heat exchanger 13 are connected through pipeline with the two ends of cross valve 20 respectively, and the two ends of compressor 19 are connected through pipeline with the other two ends of cross valve 20; First heat exchanger 18 and second heat exchanger 13 are directly through pipeline connect first expansion valve 14 and second expansion valve 17; First check valve 15 is parallelly connected with first expansion valve 14, and second check valve 16 is parallelly connected with second expansion valve 17; Second heat exchanger 13 is connected through pipeline with second surface cooler 8, chilled water circulating pump 12 and is formed loop.

The air treatment system that constitutes by air cleaner, first surface cooler 7, second surface cooler 8, rotary dehumidifier 9.Wherein, first surface cooler 7 and second surface cooler 8 are installed successively after air cleaner, rotary dehumidifier 9 is positioned at after second surface cooler 8.

The reservoir water source heat pump air-conditioner machine system works principle of the underground power station of present embodiment is:

During the transition season operating mode, close the 3rd electric control valve 5 and the 4th electric control valve 11, open first electric control valve 6 and second electric control valve 10, close compressor 19 and chilled water circulating pump 12, this moment, heat pump cold and heat supply system was in the state of quitting work.11 ℃ reservoir water is through the effect of water intake system water intaking pump 4; Flow into water intake 1; Flow in the dirt separator 3 through intake pipe 2 again and carry out scrubbing; Reservoir water after scrubbing flows into first surface cooler through first electric control valve 6 of opening state and absorbs heat, and then flows into return pipe through second electric control valve 10 of open mode again through the reservoir water after the heat absorption, enters in the reservoir at last.The mixing air of new wind and return air is lowered the temperature under the cooling effect of first surface cooler 7; But because cooling effect is higher than the dew-point temperature of humid air; Can not reach the purpose of dehumidifying; Need to open 9 pairs of air of rotary dehumidifier this moment and dehumidify, will send into underground hole group through the cooling and the low temperature dry air of dehumidifying by air supply duct at last through cooling.So constantly circulation is with the waste heat and surplus the wetting of eliminating cavity group.

During summer condition, close first electric control valve 6 and second electric control valve 10, open the 3rd electric control valve 5, the 4th electric control valve 11, compressor 19 and chilled water circulating pump 12.Reservoir water is through the effect of water intake system water intaking pump 4; Flow into water intake 1; Flow in the dirt separator 3 through intake pipe 2 and carry out scrubbing, the reservoir water after scrubbing is taken away the condensation heat that first heat exchanger 18 produces through opening the 3rd electric control valve 5 of state; And through the 4th electric control valve 11 inflow return pipes, thereby enter in the reservoir.And,, get into 18 heat releases of first heat exchanger through cross valve 20 through the refrigeration working medium that compressor 19 compresses; The reservoir water that liberated heat is recycled is taken away; Through first expansion valve, 14 adiabatic expansions, the cryogenic fluid of generation directly gets into second heat exchanger 13 and produces chilled water then, and chilled water is through chilled water water circulating pump 12; Send into second surface cooler 8 and freeze, refrigeration working medium then is compressed machine 19 suctions and compresses.Can stop rotary dehumidifier 9 this moment, only has second surface cooler 8 to carry out cool-down dehumidification, sends into underground hole group by air supply duct at last through the low temperature dry air of the second surface cooler cool-down dehumidification.So constantly circulation is with the waste heat and surplus the wetting of eliminating cavity group.

During winter condition, close first electric control valve 6 and second electric control valve 10, open the 3rd electric control valve 5, the 4th electric control valve 11, compressor 19 and chilled water circulating pump 12.Reservoir water is through the effect of water intake system water intaking pump 4; Flow into water intake 1; Flow in the dirt separators 3 through intake pipe 2 and carry out scrubbing, the reservoir water after scrubbing is through opening the 3rd electric control valve 5 of state, get into first heat exchanger 18 by refrigeration working medium heat absorption wherein after; Flow into return pipe through the 4th electric control valve 11, thereby enter in the reservoir.And,, get into 13 heat releases of second heat exchanger through cross valve 20 through the refrigeration working medium that compressor 19 compresses; Liberated heat is produced high-temperature-hot-water; High-temperature-hot-water is sent into second surface cooler 8 and is heated through chilled water water circulating pump 12, and refrigeration working medium is then through second expansion valve, 17 adiabatic expansions; Get into the heat of drawing in first heat exchanger 18 in the circulation reservoir water, be compressed machine 19 suctions again and compress.Stop rotary dehumidifier 9 this moment, do not dehumidify.Air through 8 heating of second surface cooler is sent into underground hole group by air supply duct at last.So constantly circulation is to carry out heat supply to cavity group.

Embodiment:

Present embodiment has simply calculated and has adopted the reservoir water source heat pump air-conditioner machine system of the underground power station of present embodiment to compare with traditional surface water source heat pump, is applied to the energy-saving effect that a large-scale underground power station transition season refrigeration host computer produces.This power station accounting temperature and refrigeration duty summarized results are as shown in table 1.

Table 1 refrigeration duty gathers

Scheme one: for adopting conventional piston formula refrigeration unit cooling, its unit performance coefficient COP=4.2.According to unit performance coefficient definition

In the formula, Q: the refrigerating capacity of unit, kW;

P: the power that unit consumed, kW.

The power consumption that then can try to achieve refrigeration host computer under the declared working condition is 422.22kW.

Scheme two adopts the present invention that this power station transition season is carried out free cold supply, the power consumption of water intaking water pump is only arranged this moment, and pump energy consumption can be calculated as follows:

N = ρ · G · H 102 · η

In the formula, N: the shaft power of water pump, kW;

ρ: the density of water, 1000kg/m 3

G: the flow of water, m 3/ h;

H: the lift of water pump, the engineering water intaking discrepancy in elevation of present embodiment is 40m, considers on-way resistance and local resistance, it is 70m that institute selects the water intaking pump head for use;

η: the efficient of water pump, generally get 0.5-0.8, this calculating gets 0.7.

Wherein the flow of water can calculate with following formula:

G = Q c ( t 1 - t 2 ) × 3.6

Q in the formula: refrigeration duty, kW;

C: the specific heat at constant pressure of water, 4.187kJ/ (Kg ℃);

t 1: return water temperature, get 16 ℃;

t 2: supply water temperature, get 11 ℃.

Can be calculated by above-mentioned formula and to adopt when of the present invention, energy consumption for cooling is 298.9kW.It is thus clear that compare with adopting conventional piston formula refrigeration unit cooling, adopt this system to can save energy about 29.2% at transition season.

Claims (1)

1. the reservoir water source heat pump air-conditioner machine system of a underground power station is characterized in that, constitute by water intake system, direct cold supply system, heat pump cold and heat supply system and air treatment system, wherein:
Water intake system comprises water intaking pump (4), the dirt separator (3) that pump house is installed; Intake pipe (2) and water intake (1); Wherein, water intaking pump (4) one ends are connected with the node pipeline of first electric control valve (6) with the 3rd electric control valve (5) parallel connection, and water intaking pump (4) other end connects dirt separator (3) through pipeline; Dirt separator (3) connects water intake (1) through intake pipe (2), and water intake (1) places under the reservoir lowest water level;
Directly cold supply system comprises first electric control valve (6), first surface cooler (7), second electric control valve (10) and the pipeline that is connected with water intake system thereof; Wherein, One end of first electric control valve (6) is connected with water intake system; The other end is connected with first surface cooler (7), and the other end of first surface cooler (7) is connected with second electric control valve (10), and the other end of second electric control valve (10) is connected on the water return pipeline;
Heat pump cold and heat supply system comprises first heat exchanger (18), compressor (19), cross valve (20), second heat exchanger (13), chilled water water circulating pump (12), second surface cooler (8), first expansion valve (14), first check valve (15), second expansion valve (17), second check valve (16), the 3rd electric control valve (5), the 4th electric control valve (11) and interconnective pipeline thereof; Wherein, One end of the 3rd electric control valve (5) is connected on the pipeline that connects first electric control valve (6) and water intaking pump (4) outlet through pipeline, and the other end is connected on first heat exchanger (18) through pipeline; The two ends of the 4th electric control valve (11) are connected on first heat exchanger (18) and the return pipe through pipeline respectively; First heat exchanger (18), second heat exchanger (13) are connected through pipeline with the two ends of cross valve (20) respectively, and the two ends of compressor (19) are connected through pipeline with the other two ends of cross valve (20); First heat exchanger (18) and second heat exchanger (13) are directly through pipeline connect first expansion valve (14) and second expansion valve (17); First check valve (15) is parallelly connected with first expansion valve (14), and second check valve (16) is parallelly connected with second expansion valve (17); Second heat exchanger (13) is connected through pipeline with second surface cooler (8), chilled water circulating pump (12) and is formed loop;
Air treatment system comprises air cleaner, first surface cooler (7), second surface cooler (8) and rotary dehumidifier (9); Wherein, First surface cooler (7) and second surface cooler (8) are installed after air cleaner successively, and rotary dehumidifier (9) is positioned at second surface cooler (8) afterwards.
CN201210229761.5A 2012-07-04 2012-07-04 Air conditioning unit system of water source heat pump in reservoir for underground hydropower station CN102777990B (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN103075764A (en) * 2013-01-15 2013-05-01 广东省建筑科学研究院 Double-cold source dehumidification air-conditioning unit
CN103383125A (en) * 2013-07-05 2013-11-06 燕山大学 Underground water source radiation plate type air conditioning system
CN104374020A (en) * 2013-08-16 2015-02-25 中国建筑科学研究院 Water source heat pump air-conditioning system
CN107036215A (en) * 2017-06-07 2017-08-11 山东村空调有限公司 A kind of intelligent dual intensity Bieffect air conditioning
CN107166479A (en) * 2017-05-26 2017-09-15 烟台卓越新能源科技股份有限公司 Nuclear power station residual neat recovering system
CN110469935A (en) * 2019-07-05 2019-11-19 常州大学 A kind of light, water, the fresh air system being electrically coupled

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CN201373625Y (en) * 2008-10-29 2009-12-30 中青国能(北京)科技发展有限公司 Water source heat pump unit used under coal mine well
CN201508003U (en) * 2009-09-11 2010-06-16 湖南大学 Multiple soil-borne source water-water heat pump air-conditioning system
CN202002396U (en) * 2011-03-09 2011-10-05 北京建筑工程学院 Horizontal buried pipe type soil source heat pump system based on rainwater accumulation and permeation

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CN1534246A (en) * 2003-03-31 2004-10-06 刘鸿才 Water source heat pump constant temperature constant humidity machine set
CN201373625Y (en) * 2008-10-29 2009-12-30 中青国能(北京)科技发展有限公司 Water source heat pump unit used under coal mine well
CN101603715A (en) * 2009-07-07 2009-12-16 河南科技大学 A kind of geothermal heat pump air-conditioning system and air-treatment method thereof
CN201508003U (en) * 2009-09-11 2010-06-16 湖南大学 Multiple soil-borne source water-water heat pump air-conditioning system
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Cited By (11)

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Publication number Priority date Publication date Assignee Title
CN103075764A (en) * 2013-01-15 2013-05-01 广东省建筑科学研究院 Double-cold source dehumidification air-conditioning unit
CN103075764B (en) * 2013-01-15 2015-05-27 广东省建筑科学研究院集团股份有限公司 Double-cold source dehumidification air-conditioning unit
CN103383125A (en) * 2013-07-05 2013-11-06 燕山大学 Underground water source radiation plate type air conditioning system
CN103383125B (en) * 2013-07-05 2015-07-22 燕山大学 Underground water source radiation plate type air conditioning system
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CN107166479A (en) * 2017-05-26 2017-09-15 烟台卓越新能源科技股份有限公司 Nuclear power station residual neat recovering system
CN107166479B (en) * 2017-05-26 2018-07-06 烟台卓越新能源科技股份有限公司 Nuclear power station residual neat recovering system
CN107036215A (en) * 2017-06-07 2017-08-11 山东村空调有限公司 A kind of intelligent dual intensity Bieffect air conditioning
CN107036215B (en) * 2017-06-07 2020-05-15 山东一村空调有限公司 Intelligent dual-energy double-effect air conditioner
CN110469935A (en) * 2019-07-05 2019-11-19 常州大学 A kind of light, water, the fresh air system being electrically coupled

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