CN201885986U - Rock-soil heat transfer performance tester - Google Patents
Rock-soil heat transfer performance tester Download PDFInfo
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- CN201885986U CN201885986U CN2010206255444U CN201020625544U CN201885986U CN 201885986 U CN201885986 U CN 201885986U CN 2010206255444 U CN2010206255444 U CN 2010206255444U CN 201020625544 U CN201020625544 U CN 201020625544U CN 201885986 U CN201885986 U CN 201885986U
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- water tank
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- temperature water
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Abstract
The utility model discloses a rock-soil heat transfer performance tester which is characterized in that the tester consists of a box body, a heat source part, a cold source part and a user part; the heat source part consists of a constant temperature water tank internally provided with a heater, and the heater is connected with a controller outside the constant temperature water tank; the cold source part consists of an evaporator arranged in the constant temperature water tank, two ends of the evaporator are respectively connected with 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 with two ends of a condenser; the compressor is further connected with the controller by a signal wire; the user part comprises an interface valve of a ground heat exchanger, two ends of the interface valve are connected with the constant temperature water tank respectively by a circulating water pump and a heat meter, the heat meter is further connected with a data recorder and the circulating water pump is also connected with the controller by a signal wire; and except that the interface valve is arranged outside the outer side of the box body, other parts are arranged in the box body.
Description
Technical field
The utility model relates to the thermal performance test instrument, and is 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.
The utility model content
At the deficiencies in the prior art, the technical matters that the utility model quasi-solution 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 utility model 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, the utility model tester 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; The utility model tester compact conformation, 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 the utility model ground heat transfer property tester.
Embodiment
Further narrate the utility model below in conjunction with embodiment and accompanying drawing thereof:
The ground heat transfer property tester of the utility model 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 ℃.The utility model tester 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.
The utility model tester 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 the utility model tester constant temperature water tank 1 or Range of measuring temp are 5-80 ℃, greater than the normal temperature-40 of prior art ℃.
The utility model tester 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 the utility model tester 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.
The utility model tester 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 the utility model tester 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.
The utility model tester 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.
The utility model tester 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 utility model 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 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206255444U CN201885986U (en) | 2010-11-25 | 2010-11-25 | Rock-soil heat transfer performance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206255444U CN201885986U (en) | 2010-11-25 | 2010-11-25 | Rock-soil heat transfer performance tester |
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| Publication Number | Publication Date |
|---|---|
| CN201885986U true CN201885986U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206255444U Expired - Fee Related CN201885986U (en) | 2010-11-25 | 2010-11-25 | Rock-soil heat transfer performance tester |
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| CN (1) | CN201885986U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062745A (en) * | 2010-11-25 | 2011-05-18 | 河北工业大学 | Tester for rock-soil heat transfer property |
| CN102680515A (en) * | 2012-05-29 | 2012-09-19 | 上海三瑞化学有限公司 | Device for simulating ground source heat pump |
| CN106895879A (en) * | 2017-03-16 | 2017-06-27 | 北京科技大学 | A kind of geothermal energy dynamic detection system |
-
2010
- 2010-11-25 CN CN2010206255444U patent/CN201885986U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062745A (en) * | 2010-11-25 | 2011-05-18 | 河北工业大学 | Tester for rock-soil heat transfer property |
| CN102680515A (en) * | 2012-05-29 | 2012-09-19 | 上海三瑞化学有限公司 | Device for simulating ground source heat pump |
| CN106895879A (en) * | 2017-03-16 | 2017-06-27 | 北京科技大学 | A kind of geothermal energy dynamic detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20121125 |