CN102288635A - Group Hole Thermal Response Test Method - Google Patents
Group Hole Thermal Response Test Method Download PDFInfo
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- CN102288635A CN102288635A CN201110123206XA CN201110123206A CN102288635A CN 102288635 A CN102288635 A CN 102288635A CN 201110123206X A CN201110123206X A CN 201110123206XA CN 201110123206 A CN201110123206 A CN 201110123206A CN 102288635 A CN102288635 A CN 102288635A
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Abstract
The invention relates to the technical field of ground source heat pumps, in particular to a group hole thermal response testing method. The method comprises the following steps: selecting a buried pipe for testing heat exchange capacity, and arranging a plurality of temperature sensors on the periphery of the selected buried pipe; connecting a test pipeline in thermal response test equipment with the buried pipe; heating water in a water tank in the thermal response test equipment, and starting a water pump in the thermal response test equipment to perform water circulation; the flow of each test pipeline is consistent by controlling a stop valve and a water pump of each test pipeline, and the pressure of each test pipeline is controlled by controlling a valve; each sensor measures surrounding environment data and transmits the data to the data acquisition module; and determining the group hole heat exchange power. The method is characterized in that: whether the ground source well meets the design requirements can be quickly and effectively verified, the influence of the group hole effect is tested under the engineering geological conditions, problems are found in time to adjust the design, the later cost can be controlled, and the normal operation of a ground source heat pump system is guaranteed.
Description
Technical field
The present invention relates to a kind of ground source heat pump technology field, particularly a population hole thermal response method of testing.
Background technology
Present existing thermal response testing apparatus is only carried out the thermal response testing apparatus of single hole, being mainly used in earth-source hot-pump system place shallow layer geothermal energy in early stage reconnoitres, pass through testing tool, the instrument connection in place, project place is carried out the continuous heating of certain hour, obtain comprehensive thermal physical property parameter of ground and rock soil mass medial temperature, and whether earth source heat pump engineering hole pore-forming does not have suitable method validation engineering hole to meet design requirement after finishing, after treating that the earth-source hot-pump system project installation and commissioning finishes, through knowing just whether ground pipe laying side satisfies system requirements after the operation for a long time, may cause tremendous loss to source heat pump system engineering entirely, stay hidden danger whether meeting the demands behind system's long-play.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, one population hole thermal response test macro is provided, this method of testing adopts permanent heat flow method to carry out the thermal response test and is mainly used in group hole, the buried pipe construction end of checking back exchange capability of heat, arrange temp measuring system in peripheral region, heat exchange hole, measure the thermal diffusion situation and then compare and ask for the thermal diffusion radius with the software simulation result, can carry out the comprehensive coefficient of heat conductivity in stratum by software, volumetric specific heat capacity, the boring thermal resistance in each hole draws the effect whether group hole drill hole exchange capability of heat reaches expected design at last.
The object of the invention realizes being finished by following technical scheme:
One population hole thermal response method of testing is used to test the exchange capability of heat of ground buried pipe of ground source heat pump, it is characterized in that having following steps:
Select the ground pipe laying of test exchange capability of heat, and all establish the temperature sensor that some buried depths are 1.5-5m at described ground pipe laying periphery;
Test pipeline in the thermal response testing apparatus is connected with described ground pipe laying, described temperature sensor is connected with data acquisition module in the described thermal response testing apparatus; Described thermal response testing apparatus comprises water tank, some test pipelines and data acquisition module; Described water tank inside is provided with electric heater with thermostat; Described testing tube route one a down pipe road and a up pipeline are formed, and an end of each group test pipeline is communicated with described water tank; Be respectively arranged with temperature probe, differential pressure pickup and stop valve on described descending pipeline and the up pipeline, also be provided with flow sensor and water pump on the described descending pipeline, described water pump is arranged on the described descending pipeline nearly water tank place, and each organizes between described descending pipeline and the up pipeline the straight-through pipeline connection that has a valve by; Data acquisition module connects flow sensor, temperature probe and the differential pressure pickup in the described test pipeline;
Heat the water in the described water tank, and open described water pump and carry out water cycle;
By controlling stop valve and the water pump of respectively testing pipeline, each flow of testing pipeline is reached consistent, and respectively test the pressure of pipeline by by-pass valve control control;
Flow sensor, temperature probe, differential pressure pickup and temperature sensor measurement surrounding enviroment data also are passed in the data acquisition module;
Based on institute's image data in the described data acquisition module and described water tank electrical heating power, determine group's hole heat exchange power.
The contact of described straight-through pipeline and described descending pipeline is between each sensor and water pump of described descending pipeline; The contact of described straight-through pipeline and described up pipeline is between each sensor and water tank of described up pipeline.
Described buried tube edges is laid with described temperature sensor every 0.1 meter, and the buried depth of described temperature sensor is 2.5 meters.
The type of heating of described water tank is permanent power heating.
Characteristics of the present invention are: test simulation earth-source hot-pump system actual operating mode, can must verify effectively fast whether the well design of source, ground meets design requirement, the influence of the test group effect of holes under engineering geological condition, in time pinpoint the problems design is adjusted, can control simultaneously the back current cost, the normal operation of source heat pump system is entirely provided safeguard.
Description of drawings
The whole principle schematic of accompanying drawing 1 patent working example of the present invention.
Embodiment
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As shown in Figure 1, mark 1-13 is not among the figure: stop valve 1, temperature probe 2, differential pressure pickup 3, flow sensor 4, water pump 5, valve 6, ground temperature monitoring sensor 7, water tank 8, up pipeline 9, descending pipeline 10, pipe laying 11, data acquisition module 12, straight-through pipeline 13.
Referring to shown in Figure 1, method of testing mainly realizes by a thermal response testing apparatus in the present embodiment, and this equipment mainly comprises:
Some groups by the corresponding one by one test pipeline of forming of descending pipeline 10 and up pipeline 9, and end that each group is tested pipeline is communicated with described water tank 8, and the other end is communicated with described ground pipe laying 11; Be respectively arranged with temperature probe 2, differential pressure pickup 3 and stop valve 1 on described descending pipeline 10 and the up pipeline 9, also be provided with flow sensor 4 and water pump 5 on the described descending pipeline 10, described water pump 5 is arranged at nearly water tank 8 places on the described descending pipeline 10.Each is organized between described descending pipeline 10 and the up pipeline 9 and is communicated with by a straight-through pipeline 13 that has valve 6.The contact of described straight-through pipeline 13 and described descending pipeline 10 is between the flow sensor 4 and water pump 5 of described descending pipeline 10; The contact of described straight-through pipeline 13 and described up pipeline 9 is between the differential pressure pickup 3 and water tank 8 of described up pipeline 9.It should be noted that, straight-through herein pipeline 13 is with water pump 5, the part of descending pipeline 10 and up pipeline 9, and water tank constitutes a water route, do not include any sensor on this water route, so " contact of described straight-through pipeline and described descending pipeline is between each sensor and water pump of described descending pipeline " of being explained in the claim reaches " between the contact of described straight-through pipeline and described up pipeline each sensor and water tank at described up pipeline ", should be understood to, this pipeline contact should be positioned at all the sensors and (comprise temperature probe 2, differential pressure pickup 3, flow sensor 4) and between water pump 5 or the water tank 8, contact and water pump 5(or water tank 8) between do not have any sensor.
The ground temperature part of detecting, described ground pipe laying 11 edges that are connected with the test pipeline are equipped with the ground temperature monitoring sensor 7 that some buried depths are 1.5-5m, and these some ground temperature monitoring sensors 7 constitute described ground temperature part of detecting.Described ground temperature monitoring sensor 7 is connected with data acquisition module 12.Preferred embodiment is: pipe laying 11 edges in described ground are laid with described ground temperature monitoring sensor 7 every 0.1 meter, and the buried depth of described ground temperature monitoring sensor 7 is 2.5 meters.
One data acquisition module 12 is coupled with flow sensor 4, temperature probe 2 and differential pressure pickup 3 in the described test pipeline.
The principle of work of testing apparatus is in the present embodiment: the water of electric heating water tank 8 is carried out permanent power heating, electrical heating water is carried out water cycle by water pump 5, valve 1 and water pump control 5 system flows by each pipeline, each loop is got flow reach consistent, while observed pressure value, pressure is difficult for excessive otherwise influences the safety of equipment and pipeline, if the valve 6 in the middle of the excessive then adjusting of pressure carries out step-down, by the test electrical heating power, flowmeter 4, temperature sensor 2 device parameters such as grade, the group of test is several to be determined according to ground pipe laying group number, generally equal 2 holes or greater than 2 holes, in the well area of source, ground, lay the ground temperature monitoring sensor, every 0.1 meter one, the degree of depth is 1.5m ~ 5.0m, monitoring underground temperature field situation, to monitor temperature field situation and simulation softward compares, thereby determine heat exchange temperature effect radius, by the time of test, flow, group's hole heat exchange power that each hole out temperature and subsurface temperature Monitoring Data are asked at last, thus whether source, checking existing engineering ground well meets design requirement.
In conjunction with the said equipment structure, below be elaborated for method of testing in the present embodiment:
Present embodiment is source, 6 ground of a test well, group's hole thermal response tester is provided with 6 groups and imports and exports the test pipeline, pipeline and testing apparatus are adopted hot melting way, open stop valve 1, valve 6 is closed, open water pump 5 earlier and carry out zero load circulation, with air emptying in each hole, by control valve 1 and water pump 5 Control Flow, the simulation actual operating mode, the heat exchange power of bearing according to each hole under the operating mode simultaneously heats, simulated condition operation one-period, by flowmeter 4 and temperature sensor 2 and electric power collection flow, out temperature, parameters such as electrical heating power, while, every ground temperature monitoring point of 0.1 meter laying, the degree of depth was 2.5 meters at the Di Yuanjing edge, and monitoring is along with testing apparatus is moved back underground temperature field variation, determine heat exchange temperature effect radius or compare to determine the heat exchange radius of influence, by the flow of test with the heat affecting radius of software simulation, the net export temperature, electrical heating power, whether source, thermal diffusion radius analysis ground well exchange capability of heat meets design requirement.
Claims (4)
1. a population hole thermal response method of testing is used to test the exchange capability of heat of ground buried pipe of ground source heat pump, it is characterized in that having following steps:
Select the ground pipe laying of test exchange capability of heat, and all establish the temperature sensor that some buried depths are 1.5-5m at selected ground pipe laying periphery;
Test pipeline in the thermal response testing apparatus is connected with described ground pipe laying, described temperature sensor is connected with data acquisition module in the described thermal response testing apparatus; Described thermal response testing apparatus comprises water tank, some test pipelines and data acquisition module; Described water tank inside is provided with electric heater with thermostat; Described testing tube route one a down pipe road and a up pipeline are formed, and an end of each group test pipeline is communicated with described water tank; Be respectively arranged with temperature probe, differential pressure pickup and stop valve on described descending pipeline and the up pipeline, also be provided with flow sensor and water pump on the described descending pipeline, described water pump is arranged on the described descending pipeline nearly water tank place, and each organizes between described descending pipeline and the up pipeline the straight-through pipeline connection that has a valve by; Data acquisition module connects flow sensor, temperature probe and the differential pressure pickup in the described test pipeline;
Heat the water in the described water tank, and open described water pump and carry out water cycle;
By controlling stop valve and the water pump of respectively testing pipeline, each flow of testing pipeline is reached consistent, and respectively test the pressure of pipeline by by-pass valve control control;
Flow sensor, temperature probe, differential pressure pickup and temperature sensor measurement surrounding enviroment data also are passed in the data acquisition module;
Based on institute's image data in the described data acquisition module and described water tank electrical heating power, determine group's hole heat exchange power.
2. a population hole thermal response method of testing according to claim 1 is characterized in that: the contact of described straight-through pipeline and described descending pipeline is between each sensor and water pump of described descending pipeline; The contact of described straight-through pipeline and described up pipeline is between each sensor and water tank of described up pipeline.
3. a population hole thermal response method of testing according to claim 1 is characterized in that: described buried tube edges is laid with described temperature sensor every 0.1 meter, and the buried depth of described temperature sensor is 2.5 meters.
4. a population hole thermal response method of testing according to claim 1 is characterized in that: the type of heating of described water tank is permanent power heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123206XA CN102288635A (en) | 2011-05-13 | 2011-05-13 | Group Hole Thermal Response Test Method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123206XA CN102288635A (en) | 2011-05-13 | 2011-05-13 | Group Hole Thermal Response Test Method |
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| CN102288635A true CN102288635A (en) | 2011-12-21 |
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| CN201110123206XA Pending CN102288635A (en) | 2011-05-13 | 2011-05-13 | Group Hole Thermal Response Test Method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628816A (en) * | 2012-04-19 | 2012-08-08 | 徐坚 | Multifunctional experimental platform of ground-source heat pump system |
| CN106969478A (en) * | 2016-01-13 | 2017-07-21 | 北京泰利新能源科技发展有限公司 | A kind of novel ground source heat pump energy consumption monitoring system |
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| CN101093202A (en) * | 2006-06-23 | 2007-12-26 | 鸿富锦精密工业（深圳）有限公司 | System and method for testing performance of thermal pipe |
| CN101105467A (en) * | 2007-08-07 | 2008-01-16 | 东华大学 | Soil thermal conductivity factor detection device and its method |
| CN201222040Y (en) * | 2008-06-03 | 2009-04-15 | 上海莘阳建筑节能科技开发有限公司 | Thermal response test instrument for heat-transfer performance of rapid reaction embedded heat exchanger |
| CN101587023A (en) * | 2008-09-23 | 2009-11-25 | 唐山市地源热泵有限公司 | Tester of buried tube heat exchange capability and resistance based on earth source heat pump and testing method |
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2011
- 2011-05-13 CN CN201110123206XA patent/CN102288635A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093202A (en) * | 2006-06-23 | 2007-12-26 | 鸿富锦精密工业（深圳）有限公司 | System and method for testing performance of thermal pipe |
| CN101105467A (en) * | 2007-08-07 | 2008-01-16 | 东华大学 | Soil thermal conductivity factor detection device and its method |
| CN201222040Y (en) * | 2008-06-03 | 2009-04-15 | 上海莘阳建筑节能科技开发有限公司 | Thermal response test instrument for heat-transfer performance of rapid reaction embedded heat exchanger |
| CN101587023A (en) * | 2008-09-23 | 2009-11-25 | 唐山市地源热泵有限公司 | Tester of buried tube heat exchange capability and resistance based on earth source heat pump and testing method |
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| 战国会等: "地源热泵群孔长期换热有限长体热源模型", 《浙江大学学报（工学版）》, vol. 45, no. 8, 31 August 2011 (2011-08-31), pages 1411 - 1415 * |
| 罗迎宾等: "地源热泵系统热堆积现象研究", 《中国建设信息供热制冷》, no. 9, 30 September 2008 (2008-09-30), pages 18 - 20 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628816A (en) * | 2012-04-19 | 2012-08-08 | 徐坚 | Multifunctional experimental platform of ground-source heat pump system |
| CN106969478A (en) * | 2016-01-13 | 2017-07-21 | 北京泰利新能源科技发展有限公司 | A kind of novel ground source heat pump energy consumption monitoring system |
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