CN103698039A - Test method of underground temperature field of ground source heat pump - Google Patents
Test method of underground temperature field of ground source heat pump Download PDFInfo
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- CN103698039A CN103698039A CN201310721898.7A CN201310721898A CN103698039A CN 103698039 A CN103698039 A CN 103698039A CN 201310721898 A CN201310721898 A CN 201310721898A CN 103698039 A CN103698039 A CN 103698039A
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Abstract
The invention relates to a test method of the underground temperature field of a ground source heat pump. The method comprises the following steps that (1) several groups of thermocouple wires are inserted into a plastic sheath pipe; (2) the plastic sheath pipe is linearly and fixedly arranged in a gap of pipe walls of adjacent ground buried pipes along the ground buried pipes by a plurality of plastic sealing strips; (3) the ground buried pipes are vertically buried under the ground, after the back filling, the several groups of thermocouple wires are connected with a multifunctional data collection instrument, and then, the data collection is carried out. The test method has the advantages that the method is simple, the implementation is easy, the defect that the thermocouple wires can easily facture through being pulled in the ground buried pipe installation and back filling processes is effectively overcome, the effect of measuring the distribution condition of the rock body temperature around the ground buried pipes in the operation process of a ground source heat pump system in real time is realized, and the method can be used for the study and operation control of the underground temperature field of the ground source heat pump system.
Description
Technical field
The present invention relates to shallow layer geothermal energy utilization and experimental test field, relate in particular to the method for testing in a kind of ground-source heat pump temperature field.
Background technology
Since Eleventh Five-Year Plan, as the Application in Building of the regenerative resource of one of effective way of building energy conservation, made substantial progress, be wherein the focus of research application about shallow layer geothermal energy utilization always, and it utilizes mode mainly to refer to earth-source hot-pump system.Difference according to the low level heat energy form of utilizing, can be divided into water source heat pump system and soil source heat pump system, compares with the former, and soil source heat pump system is applied widely because having, reliability is high, the life-span is long, policy support degree high is rapidly developed.
Soil source heat pump system is comprised of underground buried tube system, water source heat pump units and loaded termination three parts, and wherein rear two-part application is mature on the whole, and underground buried tube system, at present still in conceptual phase, is the difficult point of heat pump techniques always.And the distribution of underground buried tube temperature field surrounding reflected heat pump early stage geologic condition and when operation heat exchange property situation, be the key of soil source heat pump system optimal design and economical operation.The start and stop of soil source heat pump and the variation of working time, underground pipe temperature field surrounding can change accordingly, thereby affects the hot grade of Rock And Soil.Therefore,, along with the popularization of earth source heat pump, the research of underground temperature field is also caused to the attention of industry day by day both at home and abroad.
At present, heat transfer model is set up in domestic main employing, and appliance computer software numerical evaluation is carried out buried tube heat exchanger surrounding soil change of temperature field in analog.Because model has been done a large amount of hypothesis, the analog result obtaining and engineering physical presence larger difference, need measured data badly and support to revise, thereby instruct engineering practice better.In addition,, with respect to the installation of water source heat pump units and loaded termination, the construction of underground pipe is comparatively complicated because influence factor is many, is the core link of whole system.Therefore, the method of testing Real-Time Monitoring underground temperature field of seeking a kind of simple and feasible changes, when improving theoretical model, also the designing and calculating for soil source heat pump system provides necessary reference and help, for the stability and the economy that improve soil source heat pump system operation, has important practical significance.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method of testing of simple, the ground-source heat pump temperature field that can realize real-time testing.
For addressing the above problem, the method for testing in a kind of ground-source heat pump of the present invention temperature field, comprises the following steps:
(1) will organize thermocouple wire inserts in plastic protecting casing more;
(2) the effective several plastic paper strip seals of described plastic sheath are fixed on to the gap of adjacent described underground pipe tube wall along underground pipe straight line;
(3) described underground pipe is vertically imbedded undergroundly, after backfill, described many group thermocouple wires are connected with Multipurpose Data Acquisition Instrument, then carry out data acquisition.
Described step (1) middle plastic protecting casing is PE protecting pipe, and diameter and the quantity of its diameter and described many group thermocouple wires match.
Described step (1) in many group thermocouple wires be K type thermocouple wire, Qi Meizu wire core diameter is 0.2 ~ 0.3mm, insulating material is teflon.
The several plastic paper strip seals of described step in are (2) PE plastic paper strip seal, and the spacing between plastic paper strip seal is not more than 3m between two.
The present invention compared with prior art has the following advantages:
1, the present invention will organize in thermocouple wire insertion plastic protecting casing more, also form integral cannula, thereby be convenient to adopt plastic paper strip seal that integral cannula straight line is fixed on to the gap between underground pipe tube wall in the object that reaches the many groups of protection thermocouple wires.
2, the present invention utilizes pipe laying clearance space to provide a kind of simple method for soil source heat pump system underground temperature field test, the shortcoming that has effectively overcome that thermocouple wire is managed under underground pipe, easily broken in backfilling process, realized the distribution situation of Rock And Soil temperature around of underground pipe in the real time measure soil source heat pump system operational process, the research and the operation that can be used for soil source heat pump system underground temperature field are controlled.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
In figure: 1-underground pipe, 2-thermocouple wire, 3-plastic protecting casing, 4-plastic paper strip seal, 5-Multipurpose Data Acquisition Instrument.
Embodiment
As shown in Figure 1, the method for testing in a kind of ground-source heat pump temperature field, comprises the following steps:
(1) will organize thermocouple wire 2 inserts in plastic protecting casing 3 more.
Wherein: organize thermocouple wire 2 more and be K type thermocouple wire, Qi Meizu wire core diameter is 0.2 ~ 0.3mm, and insulating material is teflon; Plastic protecting casing 3 is PE protecting pipe, and its diameter matches with diameter and the quantity of many group thermocouple wires 2.
(2) the several plastic paper strip seals 4 of plastic protecting casing 3 use are fixed on to the gap that is adjacent to pipe laying 1 tube wall along underground pipe 1 straight line.Several plastic paper strip seals 4 are PE plastic paper strip seal, and the spacing between plastic paper strip seal is not more than 3m between two.
(3) underground pipe 1 is vertically imbedded undergroundly, after backfill, will be organized thermocouple wire 2 more and be connected with Multipurpose Data Acquisition Instrument 5, then carry out data acquisition.
Subsurface temperature is realized after real-time testing, and reading temperature data record, analyzes soil source heat pump system underground temperature field and changes, in order to the concrete operating scheme of sophisticated systems.
Claims (4)
1. the method for testing in ground-source heat pump temperature field, comprises the following steps:
(1) will organize thermocouple wire (2) inserts in plastic protecting casing (3) more;
(2) described plastic protecting casing (3) is fixed on to the gap of adjacent described underground pipe (1) tube wall along underground pipe (1) straight line with several plastic paper strip seals (4);
(3) described underground pipe (1) is vertically imbedded undergroundly, after backfill, described many group thermocouple wires (2) are connected with Multipurpose Data Acquisition Instrument (5), then carry out data acquisition.
2. the method for testing in a kind of ground-source heat pump as claimed in claim 1 temperature field, is characterized in that: described step (1) middle plastic protecting casing (3) is PE protecting pipe, and diameter and the quantity of its diameter and described many group thermocouple wires (2) match.
3. the method for testing in a kind of ground-source heat pump as claimed in claim 1 temperature field, is characterized in that: described step (1) in many group thermocouple wires (2) be K type thermocouple wire, Qi Meizu wire core diameter is 0.2 ~ 0.3mm, insulating material is teflon.
4. the method for testing in a kind of ground-source heat pump as claimed in claim 1 temperature field, is characterized in that: the several plastic paper strip seals (4) of described step in are (2) PE plastic paper strip seal, and the spacing between plastic paper strip seal is not more than 3m between two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310721898.7A CN103698039A (en) | 2013-12-24 | 2013-12-24 | Test method of underground temperature field of ground source heat pump |
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| CN201310721898.7A CN103698039A (en) | 2013-12-24 | 2013-12-24 | Test method of underground temperature field of ground source heat pump |
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| CN103698039A true CN103698039A (en) | 2014-04-02 |
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| CN201310721898.7A Pending CN103698039A (en) | 2013-12-24 | 2013-12-24 | Test method of underground temperature field of ground source heat pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280151B (en) * | 2014-10-17 | 2017-03-22 | 天津大学 | Temperature testing system for high-pressure high-humidity underground rock-soil in long distance mode and connecting method thereof |
| CN106813803A (en) * | 2017-01-22 | 2017-06-09 | 中国能源建设集团广东省电力设计研究院有限公司 | DC transmission deep well type earthing pole temperature measuring equipment, temperature online monitoring system and its monitoring method |
| CN108225598A (en) * | 2018-03-12 | 2018-06-29 | 山东亚特尔集团股份有限公司 | U-shaped underground pipe energy converter backfilling material temperature survey stent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202470Y (en) * | 2008-06-06 | 2009-03-04 | 上海工程技术大学 | Sheathed thermocouple temperature measuring system |
| CN102854214A (en) * | 2012-08-31 | 2013-01-02 | 中国建筑科学研究院 | Soil thermophysical property parameter measuring device and measuring method |
| CN102854215A (en) * | 2012-08-31 | 2013-01-02 | 中国建筑科学研究院 | Soil thermophysical property parameter measuring device and measuring method |
-
2013
- 2013-12-24 CN CN201310721898.7A patent/CN103698039A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202470Y (en) * | 2008-06-06 | 2009-03-04 | 上海工程技术大学 | Sheathed thermocouple temperature measuring system |
| CN102854214A (en) * | 2012-08-31 | 2013-01-02 | 中国建筑科学研究院 | Soil thermophysical property parameter measuring device and measuring method |
| CN102854215A (en) * | 2012-08-31 | 2013-01-02 | 中国建筑科学研究院 | Soil thermophysical property parameter measuring device and measuring method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280151B (en) * | 2014-10-17 | 2017-03-22 | 天津大学 | Temperature testing system for high-pressure high-humidity underground rock-soil in long distance mode and connecting method thereof |
| CN106813803A (en) * | 2017-01-22 | 2017-06-09 | 中国能源建设集团广东省电力设计研究院有限公司 | DC transmission deep well type earthing pole temperature measuring equipment, temperature online monitoring system and its monitoring method |
| CN108225598A (en) * | 2018-03-12 | 2018-06-29 | 山东亚特尔集团股份有限公司 | U-shaped underground pipe energy converter backfilling material temperature survey stent |
| CN108225598B (en) * | 2018-03-12 | 2023-10-27 | 山东亚特尔集团股份有限公司 | U-shaped buried pipe transducer backfill material temperature measurement bracket |
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Application publication date: 20140402 |
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