CN102062745A - Tester for rock-soil heat transfer property - Google Patents
Tester for rock-soil heat transfer property Download PDFInfo
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- CN102062745A CN102062745A CN 201010560607 CN201010560607A CN102062745A CN 102062745 A CN102062745 A CN 102062745A CN 201010560607 CN201010560607 CN 201010560607 CN 201010560607 A CN201010560607 A CN 201010560607A CN 102062745 A CN102062745 A CN 102062745A
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Abstract
The invention discloses a tester for rock-soil heat transfer property, which comprises a box, a heat source part, a cold source part and a user part, wherein the heat source part comprises a constant temperature water tank provided with a heater inside; the heater is connected to a controller outside the constant temperature water tank; the cold source part comprises an evaporator placed in the constant temperature water tank; two ends of the evaporator are respectively connected to one end of a compressor outside the constant temperature water tank and one end of an expansion valve; the other end of the compressor and the other end of the expansion valve are respectively connected to two ends of a condenser; the compressor is connected to a controller through a signal wire; the user part comprises an interface valve of a ground heat exchanger; two ends of the interface valve are respectively connected to the constant temperature water tank through a water circulating pump and a calorimeter; the calorimeter is connected to a data recorder; the water circulating pump is connected to the controller through the signal wire; and the interface valve is arranged outside of the box while the other parts are all mounted in the box.
Description
Technical field
The present invention relates to the thermal performance test instrument, concrete a kind of for the on-site measurement rock soil mass is conducted heat, the ground heat transfer property tester of thermal storage performance.
Background technology
In recent years, gain great popularity in building energy saving field based on the shallow layer geothermal energy development of resources application technology of buried pipe bit well format, especially rock soil mass high-temperature heat-storage technology provides effective implementation at utmost utilizing resources such as sun power, industrial waste heat.The heat transfer property of grasping rock soil mass has important directive significance for implementing above-mentioned technology.The heat transfer property index of rock soil mass mainly comprises ground average thermal conductivity and unit depth heat, and wherein the unit depth heat also can be divided into heat extraction heat and heat-obtaining heat by heat transfer type.
The ground thermal response tester of Shi Yonging only adopts the heat insulation-type electric heater that the test thermal source is provided in the market, obtains the average thermal conductivity of ground in permanent hot-fluid heat extraction mode, and instructs the earth-source hot-pump system design with this parameter.There is regulating working conditions poor (being applicable to summer condition) in this tester instrument, the heating hot-fluid is influenced seriously by on-the-spot voltage fluctuation, often cause very big late time data process errors, and this instrument can only carry out single working condition measurement, temperature-measuring range little (only be normal temperature to 40 ℃), can't obtain the heat data of heat-obtaining operating mode, use shortcoming such as be very limited.
Summary of the invention
At the deficiencies in the prior art, the technical matters that quasi-solution of the present invention is determined is, a kind of ground heat transfer property tester is provided, this survey instrument obtains the unit depth heat and the average thermal conductivity of rock soil mass by heat extraction and heat-obtaining working condition tests, can be the design of shallow layer geothermal energy accumulator system the actual parameter foundation is provided, have simple in structurely, temperature-measuring range is wide, is applicable to characteristics such as on-the-spot actual use.
The technical scheme that the present invention solve the technical problem is, designs a kind of ground heat transfer property tester, it is characterized in that this tester comprises casing, thermal source part, low-temperature receiver part and User Part; Described thermal source comprises that partly inside is provided with the constant temperature water tank of well heater, and well heater is connected with constant temperature water tank controller outward; Described low-temperature receiver partly comprises the inner evaporator that is provided with of constant temperature water tank, and the two ends of evaporator are connected with an end of constant temperature water tank compressor outward and an end of expansion valve respectively; The other end of compressor and the other end of expansion valve are connected on the two ends of condenser; Compressor also is connected with controller by signal wire; Described User Part comprises the interface valve of ground heat exchanger, and the two ends of interface valve are connected with constant temperature water tank with calorimeter by water circulating pump respectively, and calorimeter also is connected with datalogger, and water circulating pump also is connected with controller by signal wire; Except that described interface valve is arranged on the outside of casing, all the other parts are installed within the casing.
Compared with prior art, tester of the present invention is realized constant water tank temperature owing to take cold and hot compensation technique by the high Accuracy PID control technology, controllability is good, stability can reach ± and 0.5 ℃, thus guarantee stable heat transfer boundary condition, to reduce test error; Tester compact conformation of the present invention, flexible for installation, easy and simple to handle, be fit to mass production.
Description of drawings
Fig. 1 is the composition structural representation of a kind of embodiment of ground heat transfer property tester of the present invention.
Embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof:
The ground heat transfer property tester of the present invention's design (being called for short tester, referring to Fig. 1) is characterized in that this tester comprises casing 13, thermal source part, low-temperature receiver part and User Part; Described thermal source comprises that partly inside is provided with the constant temperature water tank 1 of well heater 5, and well heater 5 is connected with constant temperature water tank 1 controller 6 (PID) outward; Described low-temperature receiver partly comprises the constant temperature water tank 1 inner evaporator 4 that is provided with, and the two ends of evaporator 4 are connected with an end of constant temperature water tank 1 compressor 7 outward and an end of expansion valve 8 respectively; The other end of the other end of compressor 7 and expansion valve 8 is connected on the two ends of condenser 9; Compressor 7 also is connected with controller 6 by signal wire; Cooling blower 10 is installed in the top position of condenser 9; Described User Part comprises the interface valve 2 of ground heat exchanger, the two ends of interface valve 2 are connected with constant temperature water tank 1 with calorimeter 11 by water circulating pump 3 respectively, calorimeter 11 also is connected with datalogger 12, and water circulating pump 3 also is connected with controller 6 by signal wire; Except that described interface valve 2 is arranged on the outside of casing 13, all the other parts are installed within the casing 13.
The prior art tester adopts the heat insulation-type electric heater that thermal source is provided, and can only test ground thermal storage performance in summer, and temperature-measuring range only is a normal temperature-40 ℃.Tester of the present invention has carried out brand-new design, employing is based on the cold and hot compensation technique of the PID of refrigeration cycle and variable heater, keep stable heat transfer boundary condition, can obtain ground thermal storage performance in summer and winter the heat-obtaining performance, and temperature-measuring range is extended to 5-80 ℃, thereby makes this The Application of Technology field become more wide.
Tester of the present invention comprises two closed circuits: one is the refrigeration cycle that evaporator 4 and compressor 7, expansion valve 8, condenser 9 constitute; Another constant temperature water tank 1 constitutes the heat exchange closed circuit by water circulating pump 3 and ground heat exchanger.
The work of tester constant temperature water tank 1 of the present invention or Range of measuring temp are 5-80 ℃, greater than the normal temperature-40 of prior art ℃.
Tester of the present invention is further characterized in that described evaporator 4 is installed in the top position of well heater 5; Described cooling blower 10 is installed in the top position of condenser 9.The benefit that described evaporator 4 is installed in well heater 5 top positions is more to help cold and hot compensation, keeps the temperature stabilization in the constant temperature water tank 1.The benefit that described cooling blower 10 is installed in the top position of condenser 9 is to be more convenient for and outdoor air carries out abundant heat exchange.
The further feature of tester of the present invention is that also described evaporator 4 adopts multilayer sleeve formula structure.This structure helps improving the refrigerating efficiency of unit volume, realizes the densification structural design; Described condenser 9 adopts the fin tube type structure.This structure helps increasing the heat interchanging area with outdoor air, improves refrigerating efficiency.
Tester of the present invention is applicable to the heat transfer property test of the 150m degree of depth with interior rock soil mass.The matched form of described ground heat exchanger comprises single U type, double-U-shaped and thimble tube etc.
The principle of work and the process of tester of the present invention are as follows: at first, single U type or double-U-shaped ground heat exchanger are connected with the interface valve 2 of described tester, again with fills with water or anti freezing solution in the constant temperature water tank 1, and confirm that impermeability is good, begin test job then.
Tester of the present invention comprises two kinds of test job patterns: heat extraction pattern and heat-obtaining pattern.The heat extraction pattern is applicable to the thermal storage performance in summer of test rock soil mass, and the heat-obtaining pattern is applicable to the heat-obtaining performance in winter of test rock soil mass.This design has enlarged the operating mode scope of tester, more is applicable to practical application.
For the heat extraction pattern, set earlier the temperature of constant temperature water tank 1 by controller 6 (PID), temperature range is a normal temperature to 80 ℃; The ON cycle water pump 3 again, carry out the rock soil mass heat extraction.Under the intervention of controller 6, the fluid temperature (F.T.) in the constant temperature water tank 1 can keep a relatively stable numerical value.When reaching when stablizing the heat exchange state, close water circulating pump 3; Reset the temperature of constant temperature water tank 1 then, enter another working condition measurement.
For the heat-obtaining pattern, set earlier the temperature of constant temperature water tanks 1 by controller 6, temperature range be 5 ℃ to normal temperature; ON cycle water pump 3 and compressor 7 again, described expansion valve 8, condenser 9 and cooling blower 10 are simultaneously also in running order.Under the intervention of the temperature compensation of well heater 5 and controller 6, the fluid temperature (F.T.) in the constant temperature water tank 1 can keep a relatively stable numerical value.When reaching when stablizing the heat exchange state, close water circulating pump 3 and compressor 7; Reset the temperature of constant temperature water tank 1 then, enter another working condition measurement.
In above-mentioned test job process, but the temperature and the circular flow at interface valve 2 places of calorimeter 11 real time record ground heat exchangers, and by datalogger 12 printouts, use when handling for follow-up data.
Tester of the present invention has designed a constant temperature water tank 1, and constitutes closed circuit by water circulating pump 3 and ground heat exchanger, can obtain the heat transfer property of rock soil mass by the situation of change of out temperature under the certain flow; In constant temperature water tank 1, be provided with well heater 5, and be connected, can realize the constant heat removal fluid temperature in room temperature to the 80 ℃ scope with controller 6; In constant temperature water tank 1, also be provided with evaporator 4, constitute cool cycles with compressor 7, expansion valve 8, condenser 9 and cooling blower 10, and the coordinative role by controller 6 and well heater 5, can realize 5 ℃ of constant heat-obtaining fluid temperature (F.T.) tests to the room temperature range.It is limited that the tester of the present invention design has been broken through the temperature-measuring range of conventional art, and can only test the restriction of summer condition, and range of application extended to rock soil mass high-temperature heat-storage field, temperature-measuring range extends to 5-80 ℃, can obtain ground summer heat accumulation and winter the heat-obtaining performance parameter, striding to utilize season and have actual directive function for the efficient utilization that realizes shallow layer geothermal energy and sun power, industrial waste heat.
Claims (4)
1. a ground heat transfer property tester is characterized in that this tester comprises casing, thermal source part, low-temperature receiver part and User Part; Described thermal source comprises that partly inside is provided with the constant temperature water tank of well heater, and well heater is connected with constant temperature water tank controller outward; Described low-temperature receiver partly comprises the inner evaporator that is provided with of constant temperature water tank, and the two ends of evaporator are connected with an end of constant temperature water tank compressor outward and an end of expansion valve respectively; The other end of compressor and the other end of expansion valve are connected on the two ends of condenser; Compressor also is connected with controller by signal wire; Described User Part comprises the interface valve of ground heat exchanger, and the two ends of interface valve are connected with constant temperature water tank with calorimeter by water circulating pump respectively, and calorimeter also is connected with datalogger, and water circulating pump also is connected with controller by signal wire; Except that described interface valve is arranged on the outside of casing, all the other parts are installed within the casing.
2. ground heat transfer property tester according to claim 1 is characterized in that described evaporator is installed in the top position of well heater; Described cooling blower is installed in the top position of condenser.
3. ground heat transfer property tester according to claim 1 is characterized in that described evaporator adopts multilayer sleeve formula structure; Described condenser adopts the fin tube type structure.
4. according to claim 1,2 or 3 described ground heat transfer property testers, the temperature-measuring range that it is characterized in that described tester is 5-80 ℃.
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| CN 201010560607 CN102062745A (en) | 2010-11-25 | 2010-11-25 | Tester for rock-soil heat transfer property |
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| CN 201010560607 CN102062745A (en) | 2010-11-25 | 2010-11-25 | Tester for rock-soil heat transfer property |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359976A (en) * | 2011-08-02 | 2012-02-22 | 浙江大学 | Device and method for detecting heat radiation performance stability of automobile air conditioner heat exchanger |
| CN103808755A (en) * | 2012-11-07 | 2014-05-21 | 中航勘察设计研究院有限公司 | Rock and earth mass thermal response testing equipment |
| CN104075748A (en) * | 2014-06-27 | 2014-10-01 | 巩义市科瑞仪器有限公司 | Constant-temperature detecting device for cylinder jacket |
| CN105911092A (en) * | 2016-06-02 | 2016-08-31 | 上海理工大学 | Experiment device for researching underground space top soil heat accumulation and release evolution laws |
| CN107037080A (en) * | 2017-06-21 | 2017-08-11 | 宝莲华新能源技术（上海）股份有限公司 | A kind of experimental simulation device for being applied to improve ground heat exchanger heat transfer property |
| CN109030059A (en) * | 2018-09-08 | 2018-12-18 | 湖南东尤水汽能热泵制造有限公司 | A kind of low-temperature thermal source heat pump experiment detection platform and detection method |
| CN111678942A (en) * | 2020-05-08 | 2020-09-18 | 江苏禹治流域管理技术研究院有限公司 | Testing device and testing method for wet expansion coefficient of fiber composite material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201885986U (en) * | 2010-11-25 | 2011-06-29 | 河北工业大学 | Rock-soil heat transfer performance tester |
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2010
- 2010-11-25 CN CN 201010560607 patent/CN102062745A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201885986U (en) * | 2010-11-25 | 2011-06-29 | 河北工业大学 | Rock-soil heat transfer performance tester |
Non-Patent Citations (1)
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| 《太阳能学报》 20100531 王华军等 土壤热响应特性的一种改进实验装置 第615-619页 1-4 第31卷, 第5期 2 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359976A (en) * | 2011-08-02 | 2012-02-22 | 浙江大学 | Device and method for detecting heat radiation performance stability of automobile air conditioner heat exchanger |
| CN103808755A (en) * | 2012-11-07 | 2014-05-21 | 中航勘察设计研究院有限公司 | Rock and earth mass thermal response testing equipment |
| CN104075748A (en) * | 2014-06-27 | 2014-10-01 | 巩义市科瑞仪器有限公司 | Constant-temperature detecting device for cylinder jacket |
| CN104075748B (en) * | 2014-06-27 | 2016-05-18 | 巩义市科瑞仪器有限公司 | A kind of cylinder jacket Thermostatic detection device |
| CN105911092A (en) * | 2016-06-02 | 2016-08-31 | 上海理工大学 | Experiment device for researching underground space top soil heat accumulation and release evolution laws |
| CN105911092B (en) * | 2016-06-02 | 2018-10-12 | 上海理工大学 | The Study of The Underground top of space soil body stores the experimental provision of heat release Evolution |
| CN107037080A (en) * | 2017-06-21 | 2017-08-11 | 宝莲华新能源技术（上海）股份有限公司 | A kind of experimental simulation device for being applied to improve ground heat exchanger heat transfer property |
| CN109030059A (en) * | 2018-09-08 | 2018-12-18 | 湖南东尤水汽能热泵制造有限公司 | A kind of low-temperature thermal source heat pump experiment detection platform and detection method |
| CN109030059B (en) * | 2018-09-08 | 2023-10-03 | 湖南东尤水汽能热泵制造有限公司 | Low-temperature heat source heat pump experiment detection platform and detection method |
| CN111678942A (en) * | 2020-05-08 | 2020-09-18 | 江苏禹治流域管理技术研究院有限公司 | Testing device and testing method for wet expansion coefficient of fiber composite material |
| CN111678942B (en) * | 2020-05-08 | 2023-09-19 | 江苏禹治流域管理技术研究院有限公司 | Device and method for testing wet expansion coefficient of fiber composite material |
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Application publication date: 20110518 |