CN103776120B - The underground heat balance of geothermal heat pump air-conditioning system and heat-exchanger rig and the method for operation - Google Patents
The underground heat balance of geothermal heat pump air-conditioning system and heat-exchanger rig and the method for operation Download PDFInfo
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- CN103776120B CN103776120B CN201410073868.4A CN201410073868A CN103776120B CN 103776120 B CN103776120 B CN 103776120B CN 201410073868 A CN201410073868 A CN 201410073868A CN 103776120 B CN103776120 B CN 103776120B
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Abstract
The underground heat balance of a kind of geothermal heat pump air-conditioning system and heat-exchanger rig, it includes switch board, cooling tower, air conditioner coolant water water collector, air conditioner coolant water separator, multiple water pump, multiple earth source heat pump unit, soil source water knockout drum, source, multiple ground well group, multiple switch valve, soil source water collector, several temperature sensors and several flow transducers。A kind of method of operation of geothermal heat pump air-conditioning system, the subsurface temperature monitoring system of complete set is established, it is possible to rationally select source, the ground well group run according to the temperature of source, various places well group and changes in flow rate by switch board and a series of flow transducer and temperature sensor。Switch board also can adjust operation reserve according to the change of subsurface temperature in time, the maximized ability making the heat absorption of land used source and heat release under unbalance premise is not had at subsurface temperature, under ensureing the premise not producing underground heat pollution, improve the work efficiency of geothermal heat pump air-conditioning system and decrease the consumption of the energy。
Description
Technical field
The present invention relates to field of air conditioning, especially geothermal heat pump air-conditioning system field, specifically the underground heat of a kind of geothermal heat pump air-conditioning system balances and heat-exchanger rig。
Present invention additionally comprises the method for operation of a kind of geothermal heat pump air-conditioning system。
Background technology
Ground source heat pump technology is one of three big technical measures of country's Architectural Equipment energy conservation criteria, basic functional principle: summer, used heat was drained into underground or cooling tower by source pump when producing chilled water (meeting terminal temperature difference needs), winter source pump when producing hot water (meeting terminal temperature difference needs) by useless cold type to underground。But China's various places weather conditions are different, building demand in summer " cold " amount with winter demand " heat " measure there are differences, it is measure 2 times that " cold " such as In Middle And Lower Reaches of Changjiang River building demand in summer is measured demand in winter " heat ", if all used heat (cold) being drained into Underground Long-term will cause that subsurface temperature is unbalance, light then affect operation of air conditioner effect, heavy then cause the thermal pollution of underground。Designer when designing this type system frequently by arranging cooling tower (and heat reclamation device, the used heat that heat reclamation device is collected is mainly used in domestic hot-water, this amount is less and adjustment poor performance for air-conditioning waste heat amount, apparatus of the present invention be left out its impact) and source well group and measure solve this problem, this measure tentatively possesses the condition solving this problem from the hardware of air-conditioning equipment, the problem that this measure does not solve cooling tower and the ground source how reasonably combined use of well group, as cooling tower makes consumption excessive (otherwise ground source well group make consumption too small) then be not reaching to the purpose of source, design ground well group, source, ground well group water-cooled but source pump efficiency is adopted to be significantly larger than the efficiency of cooling tower water, and cooling tower needs power consumption；As cooling tower makes consumption too small (otherwise ground source well group make consumption excessive) then can cause that subsurface temperature is unbalance。
Summary of the invention
It is an object of the invention to for the unbalanced present situation of distribution that works between geothermal heat pump air-conditioning system underground heat and cooling tower, it is provided that a kind of can variations in temperature real-time monitoring under temperature base area under monitor in real time, the optimum geothermal heat pump air-conditioning system descend H/C but tower to use accounting evenly underground heat balance and heat-exchanger rig and the method for operation。
Technical scheme:
The underground heat balance of a kind of geothermal heat pump air-conditioning system and heat-exchanger rig, it includes switch board, cooling tower, air conditioner coolant water water collector, air conditioner coolant water separator, multiple water pump, multiple earth source heat pump unit, soil source water knockout drum, source, multiple ground well group, multiple switch valve, soil source water collector, several temperature sensors and several flow transducers, wherein
The input of air conditioner coolant water water collector is connected with user side, and the outfan of air conditioner coolant water water collector connects a main pipeline, and this main pipeline separates multiple branch road and connects with the input of multiple earth source heat pump units respectively；
The outfan of first earth source heat pump unit is connected with the input of cooling tower by a pipeline, and the outfan of cooling tower is connected with the input of this earth source heat pump unit by pipeline, constitutes the first loop；
The outfan of all earth source heat pump units is also connected with the input of soil source water knockout drum after becoming a pipeline, multiple outfans of soil source water knockout drum connect with the input of source, ground well group respectively, the outfan of source, each ground well group connects with the input of soil source water collector respectively through a switch valve, the outfan of soil source water collector separates multiple branch road and connects with the input of earth source heat pump unit respectively, constitutes second servo loop；
The outfan of described all earth source heat pump units is also connected with the input of air conditioner coolant water separator after becoming a pipeline, and the outfan of air conditioner coolant water separator is connected with user side, constitutes tertiary circuit。
Outfan at cooling tower arranges cooling tower flow transducer, and the input at soil source water knockout drum arranges soil source water knockout drum flow transducer, and the outfan at soil source water collector arranges soil source water collector flow transducer；
Input at cooling tower arranges cooling tower input temp sensor, outfan at cooling tower arranges cooling tower output temperature sensor, in outdoor, outdoor temperature sensor is set, outfan at soil source water collector arranges soil source water collector temperature sensor, input at soil source water knockout drum arranges soil source water knockout drum temperature sensor, outfan at source, multiple ground well group is respectively provided with source, ground well group leaving water temperature sensors, is respectively provided with two soil temperature sensors in the down-hole of source, multiple ground well group；
The signal output part of described all of flow transducer and temperature sensor connects with the signal input part of switch board respectively, and described all switch valves connect with the signal output part of switch board respectively。
Described switch board is connected with machine room group control system by RS485 interface。
Described switch board is provided with operation touch screen。
Source, described ground well group is U-tube structure。
The air conditioning system method of operation of a kind of geothermal heat pump air-conditioning system, switch board detects pipeline flow by flow transducer, is detected the actual temperature of source, various places well group soil by soil temperature sensor, detects outdoor temperature T by outdoor sensorOutward, and flow and temperature information are fed back to machine room group control system；Machine room group control system building database records flow and temperature information；Machine room group control system is according to pipeline flow, the original temperature of source, various places well soil, the actual temperature of source, various places well group soil, outdoor temperature TOutward, current operation mode and current season do not have maximized under unbalance premise to make the heat absorption of land used source and emission capacity run for operation reserve to control air conditioning system with subsurface temperature。
Described operation reserve includes the selection course of an earth source heat pump unit:
During summer,
1) temperature T is setChange,
2) outdoor temperature sensor detection outdoor temperature TOutward, machine room team control unit judges TOutwardWhether more than TChange,
3) more than time, machine room team control unit starting the first earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator；
When being not more than, machine room team control unit starting the second earth source heat pump unit, the 3rd earth source heat pump unit and, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator；
During winter, machine room team control unit starting the first earth source heat pump unit, the second earth source heat pump unit, the 3rd earth source heat pump unit, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
Described operation reserve includes a TChangeAutomatic makeover process:
1) soil moisture that geothermal heat pump air-conditioning system carries out source, ground well group by all soil temperature sensors before Second Year starts summer is patrolled and examined, and set a value reference values X DEG C according to different soils region situation feelings, obtain from machine room group control system ground source well group heat exhaust, source well group row's cold, source, previous year ground in the summer average supply backwater temperature difference of well group data value
If 2-1) all the measured value of soil temperature sensor is not more than its soil original temperature X DEG C, then the T in the current yearChangeRelatively previous year increases by 1 DEG C；
If 2-2) all the measured value of soil temperature sensors more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) source, * X/ previous year ground in summer average supply backwater temperature difference of well group；
If 2-3) exceeding the measured value of half soil temperature sensor more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) * X*50%/source, previous year ground in summer average supply backwater temperature difference of well group；
If 2-4) measured value of less than half soil temperature sensor is more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) * X*25%/source, previous year ground in summer average supply backwater temperature difference of well group；
3) cooling tower in current year heat exhaust setting value=previous year cooling tower heat exhaust setting value+current year cooling tower heat exhaust value added。
Described operation reserve includes the selection course of source, ground well group:
During summer,
The soil original temperature in summer of source, i-th ground well group is designated as TSummer i, two soil temperature sensors of source, i-th ground well group detect the actual soil moisture of this source, ground well group and are designated as T respectively1iAnd T2i, select T1iAnd T2iMeansigma methods is not more than TSummer iSource, ground well group stand-by；Machine room team control unit optimum selection treats that land used source well group comes into operation,
During winter,
The soil original temperature in winter of source, i-th ground well group is designated as TWinter i, two soil temperature sensors of source, i-th ground well group detect the actual soil moisture of this source, ground well group and are designated as T respectively1iAnd T2i, select T1iAnd T2iMeansigma methods is not less than TWinter iSource, ground well group stand-by；Machine room team control unit optimum selection treats that land used source well group comes into operation。
Described operation reserve includes the handoff procedure of source, ground well group:
During summer,
1), there is T in the actual soil moisture of source, the ground well group that the monitoring of machine room team control unit is come into operation1iAnd T2iMeansigma methods is more than standard TSummer iWhen 2 DEG C, source, the ground well group that machine room team control unit closing temperature exceeds standard select other to treat simultaneously land used source well group comes into operation。
2) when the temperature of source, all ground well group all exceeds standard, the T of each source, ground well group1iAnd T2iMeansigma methods is all higher than standard TSummer iWhen 2 DEG C, machine room team control unit starting the first earth source heat pump unit, the second earth source heat pump unit, the 3rd earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator,
During winter,
1), there is T in the actual soil moisture of source, the ground well group that the monitoring of machine room team control unit is come into operation1iAnd T2iMeansigma methods is lower than standard TWinter iWhen 2 DEG C, source, the ground well group that machine room team control unit closing temperature exceeds standard select other to treat simultaneously land used source well group comes into operation。
2) when the temperature of source, all ground well group all exceeds standard, the T of each source, ground well group1iAnd T2iMeansigma methods is respectively less than standard TWinter iWhen 2 DEG C, machine room team control unit optimum selection T1iAnd T2iMinimum source, the ground well group of meansigma methods is continuing with and closes other source, ground well group。
Described operation reserve includes the automatic detection process of the fault of a soil sensor:
1) switch board calculates the leaving water temperature of source, various places well group and the mean difference M of the soil moisture by following formula:
Wherein, T1iAnd T2iFor two soil temperature sensors of source, i-th ground well group, TiFor the leaving water temperature sensors of i-th ground source well group,
2) if | T1i+M-Ti| with | T2i+M-Ti| in have an entry value more than systematic error setting value, switch board sends alarm signal judging and exceeds soil temperature sensor belonging to value as fault sensor；Alarm signal continues for some time and does not deal with, this fault sensor of system automatic shield。
Described operation reserve includes a circuit failure and automatically detects process:
Discharge according to source, different engineering-environment design discrepancy ground well group, relatively soil source water knockout drum flow transducer and soil source water collector flow transducer numerical value, when difference is higher than more than the 2% of design discharge, then judge ground source well group pipeline breaking, and send pipeline breaking alarm signal by machine room team control unit；
The temperature difference of source, the ground well group water that comes in and goes out is set according to different engineering-environments, relatively soil source water knockout drum temperature sensor and soil source water collector temperature sensor numerical value, when difference is higher than setting more than the 50% of the temperature difference, then judge source, ground well group pipeline obstruction, and send pipeline obstruction alarm signal by machine room team control unit。
Machine room group control system building database, stores heat exhaust or row's cold of source well group per hour and the temperature data of source, various places well group。
Beneficial effects of the present invention:
The present invention establishes the subsurface temperature monitoring system of complete set by switch board and a series of flow transducer and temperature sensor, it is possible to rationally select source, the ground well group run according to the temperature of source, various places well group and changes in flow rate。Switch board also can adjust operation reserve according to the change of subsurface temperature in time, the maximized ability making the heat absorption of land used source and heat release under unbalance premise is not had at subsurface temperature, under ensureing the premise not producing underground heat pollution, improve the work efficiency of geothermal heat pump air-conditioning system and decrease the consumption of the energy。
Accompanying drawing explanation
Fig. 1 is underground heat balance and the schematic diagram of heat-exchanger rig (not comprising switch board) of the geothermal heat pump air-conditioning system of the present invention。
Fig. 2 is the schematic diagram of the switch board of the present invention。
Fig. 3 is the temperature data storehouse display interface of the machine room group control system of the present invention。
Figure indicates and illustrates:
1-air conditioner coolant water water collector, 2-water pump, 3-the first earth source heat pump unit, 4-the second earth source heat pump unit, 5-the 3rd earth source heat pump unit, 6-cooling tower, 7-soil source water knockout drum, source, 8-ground well group, 9-switch valve, 10-soil source water collector, 11-air conditioner coolant water separator, 12-switch board, 13-machine room group control system, 14-operates touch screen, 15-soil；
L1-cooling tower output flow sensor, L2-soil source water knockout drum flow transducer, L3-soil source water collector flow transducer；
T1-cooling tower input temp temperature sensor, T2-cooling tower output temperature sensor, T3-outdoor temperature sensor, T4-soil source water collector temperature sensor, T5-soil source water knockout drum temperature sensor, T6～T10-five ground source well group outfan temperature sensor, source, T11～T20-five ground well group downhole temperature sensor。
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described。
As depicted in figs. 1 and 2, the underground heat balance of a kind of geothermal heat pump air-conditioning system and heat-exchanger rig, whole system includes switch board 12, cooling tower 6, air conditioner coolant water water collector 1, air conditioner coolant water separator 2, three earth source heat pump units 3～5 of 11, three water pumps, source, soil source water knockout drum 7, five ground 8, five switch valves 9 of well group, 10,20 temperature sensor T1～T20 of soil source water collector and three flow transducer L1～L3, wherein
The input of air conditioner coolant water water collector 1 is connected with user side, the outfan of air conditioner coolant water water collector 1 connects a main pipeline, this main pipeline separates three branch roads and connects with the input of three earth source heat pump units 3～5 respectively, is provided with a forward water pump 2 on main pipeline；
The outfan of the first earth source heat pump unit 3 is connected with the input of cooling tower 6 by a pipeline, is provided with a forward water pump 2 on this pipeline, and the outfan of cooling tower 6 is connected by the input of pipeline and the first earth source heat pump unit 3, constitutes the first loop；
The outfan of three earth source heat pump units 3～5 is also connected with the input of soil source water knockout drum 7 after becoming a pipeline, this pipeline is provided with a forward water pump 2, five outfans of soil source water knockout drum 7 connect with the input of source, ground well group 8 respectively, the outfan of source, each ground well group 8 connects with the input of soil source water collector 10 respectively through a switch valve 9, the outfan of soil source water collector 10 separates three branch roads and connects with the input of earth source heat pump unit 3～5 respectively, constitutes second servo loop；
The outfan of three earth source heat pump units 3～5 is also connected with the input of air conditioner coolant water separator 11 after becoming a pipeline, and the outfan of air conditioner coolant water separator 11 is connected with user side, constitutes tertiary circuit。
Outfan at cooling tower 6 arranges cooling tower flow transducer L1, and the input at soil source water knockout drum 7 arranges soil source water knockout drum flow transducer L2, and the outfan at soil source water collector 10 arranges soil source water collector flow transducer L3；
Input at cooling tower 6 arranges cooling tower input temp sensor T1, outfan at cooling tower 6 arranges cooling tower output temperature sensor T2, outdoor temperature sensor T3 is set in outdoor, outfan at soil source water collector 10 arranges soil source water collector temperature sensor T4, input at soil source water knockout drum 7 arranges soil source water knockout drum temperature sensor T5, outfan at source, five ground well group 8 is respectively provided with a temperature sensor T6～T10, the down-hole soil 15 of source, five ground well group 8 is respectively provided with two temperature sensor T11～T20 and monitors the temperature of soil 15；
The signal output part of all of flow transducer L1～L3 and temperature sensor T1～T20 connects with the signal input part of switch board 12 respectively, and five switch valves 9 connect with the signal output part of switch board 12 respectively。Control and the operation of apparatus of the present invention are realized by the PLC in switch board 12。
Switch board 12 is connected with machine room group control system 13 by RS485 interface。
Being provided with operation touch screen 14 on switch board 12, operation touch screen 14 is for data input, regular job and display。
Source, ground well group 8 is U-tube structure。
The control run and program basic functional principle (summer starts to summer to terminate):
Earth source heat pump unit optimum selection process is:
1) temperature T is setChange。
2) outdoor temperature sensor detection outdoor temperature TOutward, machine room team control unit judges TOutwardWhether more than TChange。
3) more than time, machine room team control unit starting the first earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
When being not more than, machine room team control unit starting the second earth source heat pump unit, the 3rd earth source heat pump unit, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
In one embodiment, TChangeIt is 28 DEG C, collects TOutwardBe 30 DEG C, then machine room team control unit starting the first earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
After running a period of time, T detectedOutwardReduce to 28 DEG C, machine room team control unit starting the second earth source heat pump unit, the 3rd earth source heat pump unit, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
TChangeAutomatic makeover process be:
1) soil moisture that geothermal heat pump air-conditioning system carries out source, ground well group by all soil temperature sensors before Second Year starts summer is patrolled and examined, and set a value reference values X DEG C according to different soils region situation feelings, obtain from machine room group control system ground source well group heat exhaust, source well group row's cold, source, previous year ground in the summer average supply backwater temperature difference of well group data value。
If 2-1) all the measured value of soil temperature sensor is not more than its soil original temperature X DEG C, then the T in the current yearChangeRelatively previous year increases by 1 DEG C；
If 2-2) all the measured value of soil temperature sensors more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) source, * X/ previous year ground in summer average supply backwater temperature difference of well group；
If 2-3) exceeding the measured value of half soil temperature sensor more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) * X*50%/source, previous year ground in summer average supply backwater temperature difference of well group；
If 2-4) measured value of less than half soil temperature sensor is more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) * X*25%/source, previous year ground in summer average supply backwater temperature difference of well group。
3) cooling tower in current year heat exhaust setting value=previous year cooling tower heat exhaust setting value+current year cooling tower heat exhaust value added。
In one embodiment, according to concrete engineering-environment, X is set as 19.0 DEG C, the measured value of all soil temperature sensors respectively 18.5 DEG C, 18.6 DEG C, 18.8 DEG C, 18.5 DEG C, 18.6 DEG C, 18.9 DEG C, 18.8 DEG C, 18.7 DEG C, 18.4 DEG C, 18.5 DEG C, source, the ground well group heat exhaust of previous year is 81600KW H, ground source well group row's cold is 146880KW H, according to above-mentioned analysis it can be seen that the current year TChangeRelatively previous year increases by 1 DEG C。
Source, ground well group selection course is:
The soil original temperature in summer of source, i-th ground well group is designated as TSummer i, two soil temperature sensors of source, i-th ground well group detect the actual soil moisture of this source, ground well group and are designated as T respectively1iAnd T2i, select T1iAnd T2iMeansigma methods is not more than TSummer iSource, ground well group stand-by；Machine room team control unit optimum selection treats that land used source well group comes into operation。
Source, ground well group handoff procedure is:
1), there is T in the actual soil moisture of source, the ground well group that the monitoring of machine room team control unit is come into operation1iAnd T2iMeansigma methods is more than standard TSummer iWhen 2 DEG C, source, the ground well group that machine room team control unit closing temperature exceeds standard select other to treat simultaneously land used source well group comes into operation。
2) when the temperature of source, all ground well group all exceeds standard, the T of each source, ground well group1iAnd T2iMeansigma methods is all higher than standard TSummer iWhen 2 DEG C, machine room team control unit starting the first earth source heat pump unit, the second earth source heat pump unit, the 3rd earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
The control run and program basic functional principle (winter starts to winter to terminate)
Earth source heat pump unit optimum selection process is:
Machine room team control unit starting the first earth source heat pump unit, the second earth source heat pump unit, the 3rd earth source heat pump unit, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
Source, ground well group selection course is:
The soil original temperature in winter of source, i-th ground well group is designated as TWinter i, two soil temperature sensors of source, i-th ground well group detect the actual soil moisture of this source, ground well group and are designated as T respectively1iAnd T2i, select T1iAnd T2iMeansigma methods is not less than TWinter iSource, ground well group stand-by；Machine room team control unit optimum selection treats that land used source well group comes into operation。
Source, ground well group handoff procedure is:
1), there is T in the actual soil moisture of source, the ground well group that the monitoring of machine room team control unit is come into operation1iAnd T2iMeansigma methods is lower than standard TWinter iWhen 2 DEG C, source, the ground well group that machine room team control unit closing temperature exceeds standard select other to treat simultaneously land used source well group comes into operation。
2) when the temperature of source, all ground well group all exceeds standard, the T of each source, ground well group1iAnd T2iMeansigma methods is respectively less than standard TWinter iWhen 2 DEG C, machine room team control unit optimum selection T1iAnd T2iMinimum source, the ground well group of meansigma methods is continuing with and closes other source, ground well group。
Automatically the process that detects of fault in running:
The automatic detection process of the fault of soil sensor is:
1) switch board calculates the leaving water temperature of source, various places well group and the mean difference M of the soil moisture by following formula:
Wherein, T1iAnd T2iFor two soil temperature sensors of source, i-th ground well group, TiLeaving water temperature sensors for source, i-th ground well group。
2) if | T1i+M-Ti| with | T2i+M-Ti| in have an entry value more than systematic error setting value, switch board sends alarm signal judging and exceeds soil temperature sensor belonging to value as fault sensor；Alarm signal continues for some time and does not deal with, this fault sensor of system automatic shield。
In one embodiment, systematic error setting value is 2, has source, five ground well group, totally ten soil temperature sensors。The leaving water temperature of source, ground well group is respectively as follows: 20.1,20.0,20.2,20.5,20.3, the temperature of soil temperature sensor respectively 18.5 DEG C, 18.6 DEG C, 19.1 DEG C, 19.2 DEG C, 18.6 DEG C, 18.9 DEG C, 18.8 DEG C, 19.0 DEG C, 18.4 DEG C, 8.5 DEG C, calculating M according to above formula is 2.46, then judge that temperature sensor has fault, investigates in time and masks。
The backup of soil sensor:
There is maintenance and difficult in maintenance in soil temperature sensor, can whether the soil moisture normally directly influences air conditioning system properly functioning, for asking source, reliable often group ground well group to arrange two soil temperature sensors (being backed-up), i.e. T11～T10, procedure above running takes its meansigma methods。
Circuit failure detects process automatically:
Discharge according to source, different engineering-environment design discrepancy ground well group, relatively soil source water knockout drum flow transducer and soil source water collector flow transducer numerical value, when difference is higher than more than the 2% of design discharge, then judge ground source well group pipeline breaking, and send pipeline breaking alarm signal by machine room team control unit；
In one embodiment, the discharge of source, discrepancy ground well group is designed as 300.0m^3/h, soil source water knockout drum flow transducer numerical value is 302.6m^3/h, soil source water collector flow transducer numerical value is 310.2m^3/h, learn according to calculating, described difference higher than more than the 2% of design discharge, then judges source, ground well group pipeline obstruction, and sends pipeline breaking alarm signal by machine room team control unit。
The temperature difference of source, the ground well group water that comes in and goes out is set according to different engineering-environments, relatively soil source water knockout drum temperature sensor and soil source water collector temperature sensor numerical value, when difference is higher than setting more than the 50% of the temperature difference, then judge source, ground well group pipeline obstruction, and send pipeline obstruction alarm signal by machine room team control unit。
In one embodiment, the temperature difference of source, discrepancy ground well group water is set as 5 DEG C, the numerical value of soil source water knockout drum temperature sensor is 18 DEG C, the numerical value of soil source water collector temperature sensor is 27 DEG C, learn according to calculating, this difference higher than more than the 50% of design temperature, then judges source, ground well group pipeline obstruction, and sends pipeline obstruction alarm signal by machine room team control unit。
The foundation of data base:
Machine room group control system building database, stores heat exhaust or row's cold of source well group per hour and the temperature data of source, various places well group, such as Fig. 3。
Claims (9)
1. the underground heat of a geothermal heat pump air-conditioning system balances and heat-exchanger rig, it includes switch board, cooling tower, air conditioner coolant water water collector, air conditioner coolant water separator, multiple water pump, multiple earth source heat pump unit, soil source water knockout drum, source, multiple ground well group, multiple switch valve, soil source water collector, several temperature sensors and several flow transducers, wherein:
The input of air conditioner coolant water water collector is connected with user side, and the outfan of air conditioner coolant water water collector connects a main pipeline, and this main pipeline separates multiple branch road and connects with the input of multiple earth source heat pump units respectively；
The outfan of the first earth source heat pump unit is connected with the input of cooling tower by a pipeline, and the outfan of cooling tower is connected with the input of this earth source heat pump unit by pipeline, constitutes the first loop；
The outfan of all earth source heat pump units is also connected with the input of soil source water knockout drum after becoming a pipeline, multiple outfans of soil source water knockout drum connect with the input of source, ground well group respectively, the outfan of source, each ground well group connects with the input of soil source water collector respectively through a switch valve, the outfan of soil source water collector separates multiple branch road and connects with the input of earth source heat pump unit respectively, constitutes second servo loop；
The outfan of described all earth source heat pump units is also connected with the input of air conditioner coolant water separator after becoming a pipeline, and the outfan of air conditioner coolant water separator is connected with user side, constitutes tertiary circuit,
It is characterized in that arranging cooling tower flow transducer at the outfan of cooling tower, the input at soil source water knockout drum arranges soil source water knockout drum flow transducer, and the outfan at soil source water collector arranges soil source water collector flow transducer；
Input at cooling tower arranges cooling tower input temp sensor, outfan at cooling tower arranges cooling tower output temperature sensor, in outdoor, outdoor temperature sensor is set, outfan at soil source water collector arranges soil source water collector temperature sensor, input at soil source water knockout drum arranges soil source water knockout drum temperature sensor, outfan at source, multiple ground well group is respectively provided with source, ground well group leaving water temperature sensors, is respectively provided with two soil temperature sensors in the down-hole of source, multiple ground well group；
The signal output part of described all of flow transducer and temperature sensor connects with the signal input part of switch board respectively, and described all switch valves connect with the signal output part of switch board respectively；
Described switch board is connected with machine room group control system by RS485 interface。
2. an air conditioning system method of operation, underground heat based on a kind of geothermal heat pump air-conditioning system described in claim 1 balances and heat-exchanger rig, it is characterized in that switch board detects pipeline flow by flow transducer, detected the actual temperature of source, various places well group soil by soil temperature sensor, detect outdoor temperature T by outdoor sensorOutward, and flow and temperature information are fed back to machine room group control system；Machine room group control system building database records flow and temperature information；Machine room group control system is according to pipeline flow, the original temperature of source, various places well soil, the actual temperature of source, various places well group soil, outdoor temperature TOutward, current operation mode and current season do not have maximized under unbalance premise to make the heat absorption of land used source and emission capacity run for operation reserve to control air conditioning system with subsurface temperature。
3. a kind of air conditioning system method of operation according to claim 2, it is characterised in that described operation reserve includes the selection course of an earth source heat pump unit:
During summer,
1) temperature T is setChange, this temperature is arranged according to engineering concrete condition, and general initial value is: 28 DEG C；
2) outdoor temperature sensor detection outdoor temperature TOutward, machine room group control system judges TOutwardWhether more than TChange,
3) more than time, machine room group control system start the first earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator；
When being not more than, machine room group control system start the second earth source heat pump unit, the 3rd earth source heat pump unit and air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator；
During winter, machine room group control system start the first earth source heat pump unit, the second earth source heat pump unit, the 3rd earth source heat pump unit, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator。
4. a kind of air conditioning system method of operation according to claim 3, it is characterised in that described operation reserve includes a TChangeAutomatic makeover process:
1) soil moisture that geothermal heat pump air-conditioning system carries out source, ground well group by all soil temperature sensors before Second Year starts summer is patrolled and examined, and set a reference values X DEG C according to different soils region situation, obtain from machine room group control system ground source well group heat exhaust, source well group row's cold, source, previous year ground in the summer average supply backwater temperature difference of well group data value
If 2-1) all the measured value of soil temperature sensor is not more than its soil original temperature X DEG C, then the T in the current yearChangeRelatively previous year increases by 1 DEG C；
If 2-2) all the measured value of soil temperature sensors more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) source, * X/ previous year ground in summer average supply backwater temperature difference of well group；
If 2-3) exceeding the measured value of half soil temperature sensor more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) * X*50%/source, previous year ground in summer average supply backwater temperature difference of well group；
If 2-4) measured value of less than half soil temperature sensor is more than its soil original temperature X DEG C, then cooling tower in current year heat exhaust value added=(source well group heat exhaust-source, ground well group row's cold) * X*25%/source, previous year ground in summer average supply backwater temperature difference of well group；
3) cooling tower in current year heat exhaust setting value=previous year cooling tower heat exhaust setting value+current year cooling tower heat exhaust value added。
5. a kind of air conditioning system method of operation according to claim 2, it is characterised in that described operation reserve includes the selection course of source, ground well group:
During summer,
The soil original temperature in summer of source, i-th ground well group is designated as TSummer i, two soil temperature sensors of source, i-th ground well group detect the actual soil moisture of this source, ground well group and are designated as T respectively1iAnd T2i, select T1iAnd T2iMeansigma methods is not more than TSummer iSource, ground well group stand-by；Machine room group control system selects to treat that land used source well group comes into operation,
During winter,
The soil original temperature in winter of source, i-th ground well group is designated as TWinter i, two soil temperature sensors of source, i-th ground well group detect the actual soil moisture of this source, ground well group and are designated as T respectively1iAnd T2i, select T1iAnd T2iMeansigma methods is not less than TWinter iSource, ground well group stand-by；Machine room group control system selects to treat that land used source well group comes into operation。
6. a kind of air conditioning system method of operation according to claim 5, it is characterised in that described operation reserve includes the handoff procedure of source, ground well group:
During summer,
1), there is T in the actual soil moisture of source, the ground well group that the monitoring of machine room group control system is come into operation1iAnd T2iMeansigma methods is more than standard TSummer iWhen 2 DEG C, source, the ground well group that machine room group control system closing temperature exceeds standard select other to treat simultaneously land used source well group comes into operation,
2) when the temperature of source, all ground well group all exceeds standard, the T of each source, ground well group1iAnd T2iMeansigma methods is all higher than standard TSummer iWhen 2 DEG C, machine room group control system start the first earth source heat pump unit, the second earth source heat pump unit, the 3rd earth source heat pump unit and cooling tower, air conditioner coolant water water collector, soil source water knockout drum, source well group, soil source water collector, air conditioner coolant water separator,
During winter,
1), there is T in the actual soil moisture of source, the ground well group that the monitoring of machine room group control system is come into operation1iAnd T2iMeansigma methods is lower than standard TWinter iWhen 2 DEG C, source, the ground well group that machine room group control system closing temperature exceeds standard select other to treat simultaneously land used source well group comes into operation,
2) when the temperature of source, all ground well group all exceeds standard, the T of each source, ground well group1iAnd T2iMeansigma methods is respectively less than standard TWinter iWhen 2 DEG C, machine room group control system selects T1iAnd T2iMinimum source, the ground well group of meansigma methods is continuing with and closes other source, ground well group。
7. a kind of air conditioning system method of operation according to claim 2, it is characterised in that described operation reserve includes the automatic detection process of the fault of a soil sensor:
1) switch board calculates the leaving water temperature of source, various places well group and the mean difference M of the soil moisture by following formula:
Wherein, T1iAnd T2iFor two soil temperature sensors of source, i-th ground well group, TiFor the leaving water temperature sensors of i-th ground source well group,
2) if | T1i+M-Ti| with | T2i+M-Ti| in have an entry value more than systematic error setting value, switch board sends alarm signal judging and exceeds soil temperature sensor belonging to value as fault sensor；Alarm signal continues for some time and does not deal with, this fault sensor of system automatic shield。
8. a kind of air conditioning system method of operation according to claim 2, it is characterised in that described operation reserve includes a circuit failure and automatically detects process:
Discharge according to source, different engineering-environment design discrepancy ground well group, relatively soil source water knockout drum flow transducer and soil source water collector flow transducer numerical value, when difference is higher than more than the 2% of design discharge, then judge ground source well group pipeline breaking, and send pipeline breaking alarm signal by machine room group control system；
The temperature difference of source, the ground well group water that comes in and goes out is set according to different engineering-environments, relatively soil source water knockout drum temperature sensor and soil source water collector temperature sensor numerical value, when difference is higher than setting more than the 50% of the temperature difference, then judge source, ground well group pipeline obstruction, and send pipeline obstruction alarm signal by machine room group control system。
9. a kind of air conditioning system method of operation according to claim 2, it is characterised in that machine room group control system building database, stores heat exhaust or row's cold of source well group per hour and the temperature data of source, various places well group。
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| CN105135639A (en) * | 2015-09-24 | 2015-12-09 | 宝莲华新能源技术（上海）有限公司 | Energy-saving control system for ground source heat pump multi-air-conditioning units |
| CN108534413A (en) * | 2018-03-30 | 2018-09-14 | 陕西亚特尔地源空调有限公司 | Ground-source heat pump system underground pipe equalized temperature adjustment control method |
| CN110243091A (en) * | 2019-05-13 | 2019-09-17 | 湖南达道新能源开发有限公司 | A kind of heat exchanger and control method for geothermal exploitation |
| CN111256203B (en) * | 2020-01-19 | 2021-11-30 | 深圳市奥宇节能技术股份有限公司 | Group control method for heat source heat exchangers of central heating system |
| CN111564024B (en) * | 2020-05-25 | 2021-08-17 | 安徽复盛信息科技有限公司 | Automatic protection method and system based on dangerous gas monitoring alarm |
| CN116007231B (en) * | 2022-12-16 | 2024-07-26 | 珠海格力电器股份有限公司 | Ground source heat pump unit, control method and device thereof and storage medium |
| CN116951825B (en) * | 2023-08-10 | 2024-07-26 | 武汉卓成节能科技股份有限公司 | Outdoor buried pipe network structure of ground source heat pump, control method and construction method |
| CN117744953B (en) * | 2024-02-19 | 2024-04-19 | 天津大学 | Simplified analysis method for shallow soil source buried pipe group of large-scale ground source heat pump system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010014910A1 (en) * | 2008-07-31 | 2010-02-04 | Walford Technologies, Inc | Geothermal heating, ventilating and cooling system |
| CN102155829A (en) * | 2011-03-29 | 2011-08-17 | 浙江建设职业技术学院 | Adaptive heat balance control system of ground source heat pump |
| CN202648022U (en) * | 2012-05-18 | 2013-01-02 | 苏州际能环境能源技术有限公司 | Connection system for auxiliary heat removal of cooling tower in ground source heat pump system |
| CN103542471A (en) * | 2013-09-22 | 2014-01-29 | 天津好为节能环保科技发展有限公司 | Ground source heat pump hot water and constant-temperature-and-humidity air conditioning system |
| CN203731603U (en) * | 2014-02-28 | 2014-07-23 | 南京东创系统工程有限公司 | Underground heat balance and heat exchange device for ground source heat pump air conditioning system |
-
2014
- 2014-02-28 CN CN201410073868.4A patent/CN103776120B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010014910A1 (en) * | 2008-07-31 | 2010-02-04 | Walford Technologies, Inc | Geothermal heating, ventilating and cooling system |
| CN102155829A (en) * | 2011-03-29 | 2011-08-17 | 浙江建设职业技术学院 | Adaptive heat balance control system of ground source heat pump |
| CN202648022U (en) * | 2012-05-18 | 2013-01-02 | 苏州际能环境能源技术有限公司 | Connection system for auxiliary heat removal of cooling tower in ground source heat pump system |
| CN103542471A (en) * | 2013-09-22 | 2014-01-29 | 天津好为节能环保科技发展有限公司 | Ground source heat pump hot water and constant-temperature-and-humidity air conditioning system |
| CN203731603U (en) * | 2014-02-28 | 2014-07-23 | 南京东创系统工程有限公司 | Underground heat balance and heat exchange device for ground source heat pump air conditioning system |
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