CN203616939U - Ground source heat pump practical-training experiment table - Google Patents
Ground source heat pump practical-training experiment table Download PDFInfo
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- CN203616939U CN203616939U CN201320867630.XU CN201320867630U CN203616939U CN 203616939 U CN203616939 U CN 203616939U CN 201320867630 U CN201320867630 U CN 201320867630U CN 203616939 U CN203616939 U CN 203616939U
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Abstract
The utility model discloses a ground source heat pump practical-training experiment table. The pratical-training experiment table comprises a water source side system, a ground source heat pump set (2) connected with the water source side system, an air-conditioning side system, a tap water replenishing system and a liquid crystal touch screen (1); the air-conditioning side system and the tap water replenishing system are connected with the ground source heat pump set (2); the liquid crystal touch screen (1) is used to control the water source side system, the ground source heat pump set (2) and the tap water replenishing system; the water source side system, the air-conditioning side system and the ground source heat pump set (2) are connected through soft connections (3); and the water source side system comprises a water source side water supply system and a water source side water return system. The utility model provides the ground source heat pump practical-training experiment table which can be free to set water temperature of a water source side and can detect air-conditioning side water supply/return temperature, water source side supply/return temperature, change conditions of cooling agent temperature of a condenser and an evaporator of the ground source heat pump set, pressure changes of the condenser and the evaporator of the ground source heat pump set and temperature changes of air inlets and air outlets of a blower fan coiled tube according to differences of the water temperature of the water source side.
Description
Technical field
The utility model relates to a kind of earth source heat pump training experimental, especially carry out a practical operation skill training for earth source heat pump for college student, cultivate student's equipment operation management knowledge and the earth source heat pump training experimental of most common failure judgement and maintainability.
Background technology
Environmental pollution and energy crisis have become two hang-ups of society, and how in enjoying, paying minimum cost becomes the mankind's common recognition gradually, under this background take environmental protection with healthyly arise at the historic moment as the green building of principal character.Consuming as few as possible the energy is the developing direction that buildings creating comfortable environment has become air-conditioning, develops natural cold/heat source and can bring energy-conservation and environmental protection double benefit for air-conditioning, thereby be more and more subject to people's attention.Earth surface geothermal using resource is huge natural resources, and its thermal inertia is very big, and annual temperature fluctuation is very little, and in general, throughout the year maintaining about this area's year-round average temperature below the 50m of earth's surface, is a kind of desirable natural cold and heat source.
Geothermal heat pump air-conditioning system is a kind of efficient, energy-saving and environmental protection, reproducible heat supply (cold) system of extracting heat from earth surface geothermal using resource.This system be ripe heat pump techniques, Heating,Ventilating and Air Conditioning (HVAC) complete sets of Techniques geological mapping technology in one, efficient, stable, economic operation at the metastable temperature of underground 50-100 rice.Geothermal heat pump air-conditioning system is made up of end (room air is processed end etc.) system, earth source heat pump unit and source water system three parts.During for user's heat supply, earth source heat pump unit extracts low grade heat energy from water source, and the earth source heat pump unit (heat pump) " pump " driving by electric energy is delivered to high temperature heat source, to meet user's heat demand.During for user's cooling, earth source heat pump unit is transferred to waste heat indoor user in source water by earth source heat pump unit, to meet user's refrigeration demand.
But current domestic each colleges and universities related experiment equipment scarcity, mostly student is to obtain theoretical information from books, and Practical Project is understood seldom, and the recruiter of employing unit is more and more higher to the requirement of practical work experience.How to improve the practical operation technical ability of student's earth source heat pump, cultivate student's equipment operation management and equipment operation most common failure judgement and maintainability, Shi Ge colleges and universities problem demanding prompt solution.
Therefore, designing a kind of earth source heat pump training experimental, meet the practical operation skill training of student's earth source heat pump, cultivate student's equipment operation management knowledge and most common failure judgement and maintainability, has been an instant problem.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the utility model provides water temperature that can free setting water source side, according to the difference of water source side water temperature, can measure the earth source heat pump training experimental of the variation of variation, fan coil air inlet, the air outlet temperature of situation of change, earth source heat pump unit condenser, the evaporator pressure of the refrigerant temperature of air-conditioning side supply and return water temperature, water source side supply and return water temperature and earth source heat pump unit condenser, evaporator.
For achieving the above object, the following technical scheme of employing of the present utility model:
Earth source heat pump training experimental comprises water source side system, the earth source heat pump unit 2 being connected with water source side system, the air-conditioning side system being connected with earth source heat pump unit 2 and tap water water charging system, and for controlling the liquid crystal touch screen 1 of water source side system, earth source heat pump unit 2 and tap water water charging system; Between water source side system, air-conditioning side system and earth source heat pump unit 2,3 be connected by being flexible coupling; Described water source side system comprises water source side water system and water source side return water system.
Described water source side system comprises; The cooling of water source side unit 11, attemperater 13, be arranged on the heat interchanger 12 between water source side cooling unit 11 and attemperater 13; Described attemperater 13 is connected by water source side return pipe 21 with earth source heat pump unit 2, is disposed with attemperater outlet valve 14, water source side water pump 16, water source side exit of pump valve 18, water source side feed pipe thermometer 29-3, second water source side return pipe y-type filter 31-2, water source side feed pipe tensimeter 30-3 between water source side return pipe 21;
Water source side return pipe 21 between described water source side exit of pump valve 18 and water source side feed pipe thermometer 29-3 is connected with tap water supply pipe 5-1 by water source side pipe net filling pipe 5-3, on water source side pipe net filling pipe 5-3, is provided with water source side pipe net water compensating valve 20;
Described tap water supply pipe 5-1 is connected with attemperater 13 by attemperater filling pipe 5-2, on attemperater filling pipe 5-2, is provided with attemperater water compensating valve 7; On tap water supply pipe 5-1 between threeway and tap water water source that described attemperater water compensating valve 7 is communicated with tap water supply pipe 5-1, be disposed with non-return valve 8, electronic hydrotreater 9, tap water supply valve 10;
Between described attemperater 13 and earth source heat pump unit 2, be provided with water source side feed pipe 4, on water source side feed pipe 4, be respectively arranged with well heater 15, attemperater water inlet valve 17, water source side return pipe thermometer 29-4, water source side return pipe tensimeter 30-4; On water source side feed pipe 4, be connected with tap water drainpipe 6, on tap water drainpipe 6, be provided with water source side pipe net draining valve 19;
Described air-conditioning side system comprises air conditioning simulation room 28, is arranged on the fan coil 27 in air conditioning simulation room 28, is provided with air-conditioning side return water system and air-conditioning side water system between fan coil 27 and earth source heat pump unit 2;
Described air-conditioning side return water system comprises the air-conditioning side system return pipe 22 being arranged between fan coil 27 and earth source heat pump unit 2, is respectively arranged with air-conditioning side water pump 24, capsule formula Constant pressure tank 26, air-conditioning side return pipe thermometer 29-2, air-conditioning side return pipe tensimeter 30-2, the first air-conditioning side return pipe y-type filter 31-1 on air-conditioning side system return pipe 22;
Described air-conditioning side water system comprises the air-conditioning side system feed pipe 23 being arranged between fan coil 27 and earth source heat pump unit 2, is respectively arranged with air-conditioning side feed pipe thermometer 29-1, air-conditioning side feed pipe tensimeter 30-1 on air-conditioning side system feed pipe 23.
Air-conditioning side system return pipe 22 between described air-conditioning side water pump 24 and capsule formula Constant pressure tank 26 is connected with air-conditioning side pipe net filling pipe 5-4, on air-conditioning side pipe net filling pipe 5-4, is provided with air-conditioning side pipe net water compensating valve 25.
actively beneficial effect:
1, the invention utilizes a water simulation source water in attemperater, and the water temperature in attemperater heats up by temperature controller control heater or lowers the temperature unit cooling; Temperature controller can free setting temperature, in order to simulate the source water temperature under condition of different temperatures; By well heater to the water of attemperater heated when experimental machine is moved winter, makes water temperature maintain the temperature identical with water source water temperature; By lower the temperature unit to the water of attemperater lowered the temperature when experimental machine is moved summer, makes water temperature maintain the temperature identical with water source water temperature.
2, water source side system pipeline be furnished with water source side water pump, the ball valve identical with Practical Project pipeline, be flexible coupling, the accessory such as thermometer, tensimeter, y-type filter, make student understand the composition of pipeline in Practical Project.
3, earth source heat pump unit adopts small-sized plate type heat exchanger as condenser, evaporator; Main frame adopts swirl type cold compressor; Control circuit adopts the microcomputerized control identical with Practical Project; are furnished with temperature sensor, pressure transducer, overload relay etc.; and adopt liquid crystal touch screen reactive system working condition; can control starting up's order, shutdown order, temperature overload protection, pressure overload protection etc. by micro computer maintains system and normally moves; and can gather service data, by port to computer transmission data.
4, air-conditioning side system is provided with air conditioning simulation room, is furnished with fan coil, associated temperature sensor in room.Can gather temperature variation data in room, fan coil inflow temperature and leaving water temperature, fan coil EAT and leaving air temp.
5, air-conditioning side system pipeline be furnished with the capsule formula Constant pressure tank identical with Practical Project pipeline, air-conditioning side water pump, ball valve, be flexible coupling, the accessory such as thermometer, tensimeter, y-type filter, vent valve, make student understand the composition of pipeline in Practical Project.
6, tap water water charging system is furnished with the electronic hydrotreater identical with Practical Project pipeline, non-return valve, ball valve etc.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present utility model
In figure, be: liquid crystal touch screen 1, earth source heat pump unit 2, be flexible coupling 3, water source side feed pipe 4, tap water supply pipe 5-1, attemperater filling pipe 5-2, water source side pipe net filling pipe 5-3, air-conditioning side pipe net filling pipe 5-4, tap water drainpipe 6, attemperater water compensating valve 7, non-return valve 8, electronic hydrotreater 9, tap water supply valve 10, water source side cooling unit 11, heat interchanger 12, attemperater 13, attemperater outlet valve 14, well heater 15, water source side water pump 16, attemperater water inlet valve 17, water source side exit of pump valve 18, water source side pipe net draining valve 19, water source side pipe net water compensating valve 20, water source side return pipe 21, air-conditioning side system return pipe 22, air-conditioning side system feed pipe 23, air-conditioning side water pump 24, air-conditioning side pipe net water compensating valve 25, capsule formula Constant pressure tank 26, fan coil 27, air conditioning simulation room 28, air-conditioning side feed pipe thermometer 29-1, air-conditioning side return pipe thermometer 29-2, water source side feed pipe thermometer 29-3, water source side return pipe thermometer 29-4, air-conditioning side feed pipe tensimeter 30-1, air-conditioning side return pipe tensimeter 30-2, water source side feed pipe tensimeter 30-3, water source side return pipe tensimeter 30-4, the first air-conditioning side return pipe y-type filter 31-1, second water source side return pipe y-type filter 31-2.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described further:
As shown in Figure 1, earth source heat pump training experimental comprises water source side system, the earth source heat pump unit 2 being connected with water source side system, the air-conditioning side system being connected with earth source heat pump unit 2 and tap water water charging system, and for controlling the liquid crystal touch screen 1 of water source side system, earth source heat pump unit 2 and tap water water charging system; Between water source side system, air-conditioning side system and earth source heat pump unit 2,3 be connected by being flexible coupling; Described water source side system comprises water source side water system and water source side return water system;
Described water source side system comprises; The cooling of water source side unit 11, attemperater 13, be arranged on the heat interchanger 12 between water source side cooling unit 11 and attemperater 13; Described attemperater 13 is connected by water source side return pipe 21 with earth source heat pump unit 2, is disposed with attemperater outlet valve 14, water source side water pump 16, water source side exit of pump valve 18, water source side feed pipe thermometer 29-3, second water source side return pipe y-type filter 31-2, water source side feed pipe tensimeter 30-3 between water source side return pipe 21;
Water source side return pipe 21 between described water source side exit of pump valve 18 and water source side feed pipe thermometer 29-3 is connected with tap water supply pipe 5-1 by water source side pipe net filling pipe 5-3, on water source side pipe net filling pipe 5-3, is provided with water source side pipe net water compensating valve 20;
Described tap water supply pipe 5-1 is connected with attemperater 13 by attemperater filling pipe 5-2, on attemperater filling pipe 5-2, is provided with attemperater water compensating valve 7; On tap water supply pipe 5-1 between threeway and tap water water source that described attemperater water compensating valve 7 is communicated with tap water supply pipe 5-1, be disposed with non-return valve 8, electronic hydrotreater 9, tap water supply valve 10;
Between described attemperater 13 and earth source heat pump unit 2, be provided with water source side feed pipe 4, on water source side feed pipe 4, be respectively arranged with well heater 15, attemperater water inlet valve 17, water source side return pipe thermometer 29-4, water source side return pipe tensimeter 30-4; On water source side feed pipe 4, be connected with tap water drainpipe 6, on tap water drainpipe 6, be provided with water source side pipe net draining valve 19;
Described air-conditioning side system comprises air conditioning simulation room 28, is arranged on the fan coil 27 in air conditioning simulation room 28, is provided with air-conditioning side return water system and air-conditioning side water system between fan coil 27 and earth source heat pump unit 2;
Described air-conditioning side return water system comprises the air-conditioning side system return pipe 22 being arranged between fan coil 27 and earth source heat pump unit 2, is respectively arranged with air-conditioning side water pump 24, capsule formula Constant pressure tank 26, air-conditioning side return pipe thermometer 29-2, air-conditioning side return pipe tensimeter 30-2, the first air-conditioning side return pipe y-type filter 31-1 on air-conditioning side system return pipe 22;
Described air-conditioning side water system comprises the air-conditioning side system feed pipe 23 being arranged between fan coil 27 and earth source heat pump unit 2, is respectively arranged with air-conditioning side feed pipe thermometer 29-1, air-conditioning side feed pipe tensimeter 30-1 on air-conditioning side system feed pipe 23.
Air-conditioning side system return pipe 22 between described air-conditioning side water pump 24 and capsule formula Constant pressure tank 26 is connected with air-conditioning side pipe net filling pipe 5-4, on air-conditioning side pipe net filling pipe 5-4, is provided with air-conditioning side pipe net water compensating valve 25.
1, when simulation winter heating operating condition, as shown in Figure 1, first carry out pattern setting by liquid crystal touch screen 1, Working mode set, for heating, and is set to working temperature.After setting work completes, some start button starts system, and now system is according to the program of setting, and the first step starts air-conditioning side water pump 24, and water temperature, the water yield, hydraulic pressure to air-conditioning system detects, and pinpoints the problems as system detects, and system quits work.If system detects and do not pinpoint the problems, system enters second step, starts water source side water pump 16, and water temperature, the water yield, hydraulic pressure to air-conditioning system detects, and pinpoints the problems as system detects, and system quits work.If system detects and do not pinpoint the problems, system enters second step, and earth source heat pump unit 2 starts, and system enters the state of heating.
Now, the water self-heat conserving water outlet of water tank valve 14 in attemperater 13 flows out, and by water source side return pipe 21, water is sent back to earth source heat pump unit 2 by water source side water pump 16.In heat interchanger and the cold-producing medium heat exchange of earth source heat pump unit 2, temperature declines, then delivers to attemperater by water source side feed pipe 4 through attemperater water inlet valve 17 and well heater 15.If along with the operation of equipment, the water temperature in attemperater is lower than design temperature, and well heater 15 is switched on, and the water starting delivering in attemperater heats, and after heating-up temperature arrives design temperature, well heater 15 power-off stop heating.Water in air-conditioning side system is in heat interchanger and the cold-producing medium heat exchange of earth source heat pump unit 2, and temperature raises.Flow to fan coil 27 by air-conditioning side system feed pipe 23, in the coil pipe of fan coil 27, with extraneous air heat exchange, temperature reduces.Return to earth source heat pump unit 2 by air-conditioning side water pump 24 by air-conditioning side system return pipe 22 again.If air-conditioning side water temperature raises, pressure increases, and a part of water enters capsule formula Constant pressure tank 26, maintains system pressure stable, if temperature reduces pressure drop, a part of water of capsule formula Constant pressure tank 26 enters system, stable to maintain system pressure.In above-mentioned heating process, can be by setting different attemperater 13 water temperatures, observe the situation of change of air-conditioning side import and export water temperature in different temperatures situation, and the situation of change of the situation of change of earth source heat pump unit 2 high and low pressure side pressure and two loop import and export water temperatures.When opening tap water supply valve 10, attemperater water compensating valve 7 or water source side pipe net water compensating valve 20 to water source side attemperater 13 or water source side pipe net moisturizing when lack of water in system water source pipe network.In the time that system water source pipe network maintenance or system are cleaned open water source pipe network draining valve 19 can be by system in water directly discharge.
2. summer as shown in Figure 1, is first carried out pattern setting by liquid crystal touch screen 1 when cooling condition in simulation, is refrigeration, and sets working temperature by Working mode set.After setting work completes, some start button starts system, and now system is according to the program of setting, and the first step starts air-conditioning side water pump 24, and water temperature, the water yield, hydraulic pressure to air-conditioning system detects, and pinpoints the problems as system detects, and system quits work.If system detects and do not pinpoint the problems, system enters second step, starts water source side water pump 16, and water temperature, the water yield, hydraulic pressure to air-conditioning system detects, and pinpoints the problems as system detects, and system quits work.If system detects and do not pinpoint the problems, system enters second step, and earth source heat pump unit 2 starts, and system enters refrigerating state.
Now, the water self-heat conserving water outlet of water tank valve 14 in attemperater 13 flows out, and by water source side return pipe 21, water is sent back to earth source heat pump unit 2 by water source side water pump 16.In heat interchanger and the cold-producing medium heat exchange of earth source heat pump unit 2, temperature raises, then delivers to attemperater by water source side feed pipe 4 through attemperater water inlet valve 17 and well heater 15.If along with the operation of equipment, the water temperature in attemperater is higher than design temperature, and water source side cooling unit 11 is started working, and the water starting delivering in attemperater is lowered the temperature, and after temperature arrives design temperature, water source side cooling unit 11 is lowered the temperature.Because not needing the water in attemperater 13, this process heats, so well heater 15 is not worked in off-position all the time.Heat interchanger and cold-producing medium heat exchange to the water in air-conditioning side system at earth source heat pump unit 2, temperature reduces.Flow to fan coil 27 by air-conditioning side system feed pipe 23, in the coil pipe of fan coil 27, with extraneous air heat exchange, temperature raises.Return to earth source heat pump unit 2 by air-conditioning side water pump 24 by air-conditioning side system return pipe 22 again.If air-conditioning side water temperature raises, pressure increases, and a part of water enters capsule formula Constant pressure tank 26, maintains system pressure stable, if temperature reduces pressure drop, a part of water of capsule formula Constant pressure tank 26 enters system, stable to maintain system pressure.In above-mentioned process of refrigerastion, can be by setting different attemperater 13 water temperatures, observe the situation of change of air-conditioning side import and export water temperature in different temperatures situation, and the situation of change of the situation of change of earth source heat pump unit 2 high and low pressure side pressure and two loop import and export water temperatures.When opening tap water supply valve 10, attemperater water compensating valve 7 or water source side pipe net water compensating valve 20 to water source side attemperater 13 or water source side pipe net moisturizing when lack of water in system water source pipe network.In the time that system water source pipe network maintenance or system are cleaned open water source pipe network draining valve 19 can be by system in water directly discharge.
Above embodiment is only unrestricted in order to the technical solution of the utility model to be described, in the ken possessing at described those of ordinary skill, the technical solution of the utility model is modified or is equal to replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (9)
1. earth source heat pump training experimental, it is characterized in that: comprise water source side system, the earth source heat pump unit (2) being connected with water source side system, the air-conditioning side system and the tap water water charging system that are connected with earth source heat pump unit (2), and for controlling the liquid crystal touch screen (1) of water source side system, earth source heat pump unit (2) and tap water water charging system; Between water source side system, air-conditioning side system and earth source heat pump unit (2), be connected by be flexible coupling (3); Described water source side system comprises water source side water system and water source side return water system.
2. earth source heat pump training experimental according to claim 1, is characterized in that: described water source side system comprises water source side cooling unit (11), attemperater (13), is arranged on the heat interchanger (12) between water source side cooling unit (11) and attemperater (13); Described attemperater (13) is connected by water source side return pipe (21) with earth source heat pump unit (2), is disposed with attemperater outlet valve (14), water source side water pump (16), water source side exit of pump valve (18), water source side feed pipe thermometer (29-3), second water source side return pipe y-type filter (31-2), water source side feed pipe tensimeter (30-3) between water source side return pipe (21).
3. earth source heat pump training experimental according to claim 2, it is characterized in that: the water source side return pipe (21) between described water source side exit of pump valve (18) and water source side feed pipe thermometer (29-3) is connected with tap water supply pipe (5-1) by water source side pipe net filling pipe (5-3), is provided with water source side pipe net water compensating valve (20) on water source side pipe net filling pipe (5-3).
4. earth source heat pump training experimental according to claim 3, it is characterized in that: described tap water supply pipe (5-1) is connected with attemperater (13) by attemperater filling pipe (5-2), is provided with attemperater water compensating valve (7) on attemperater filling pipe (5-2); Tap water supply pipe (5-1) between crossing and tap water water source that described attemperater water compensating valve (7) is communicated with tap water supply pipe (5-1) is disposed with non-return valve (8), electronic hydrotreater (9), tap water supply valve (10).
5. earth source heat pump training experimental according to claim 4, it is characterized in that: between described attemperater (13) and earth source heat pump unit (2), be provided with water source side feed pipe (4), on water source side feed pipe (4), be respectively arranged with well heater (15), attemperater water inlet valve (17), water source side return pipe thermometer (29-4), water source side return pipe tensimeter (30-4); On water source side feed pipe (4), be connected with tap water drainpipe (6), on tap water drainpipe (6), be provided with water source side pipe net draining valve (19).
6. earth source heat pump training experimental according to claim 1, it is characterized in that: described air-conditioning side system comprises air conditioning simulation room (28), be arranged on the fan coil (27) in air conditioning simulation room (28), between fan coil (27) and earth source heat pump unit (2), be provided with air-conditioning side return water system and air-conditioning side water system.
7. earth source heat pump training experimental according to claim 6, it is characterized in that: described air-conditioning side return water system comprises the air-conditioning side system return pipe (22) being arranged between fan coil (27) and earth source heat pump unit (2), on air-conditioning side system return pipe (22), be respectively arranged with air-conditioning side water pump (24), capsule formula Constant pressure tank (26), air-conditioning side return pipe thermometer (29-2), air-conditioning side return pipe tensimeter (30-2), the first air-conditioning side return pipe y-type filter (31-1).
8. according to the earth source heat pump training experimental described in claim 1 or 6, it is characterized in that: described air-conditioning side water system comprises the air-conditioning side system feed pipe (23) being arranged between fan coil (27) and earth source heat pump unit (2), on air-conditioning side system feed pipe (23), be respectively arranged with air-conditioning side feed pipe thermometer (29-1), air-conditioning side feed pipe tensimeter (30-1).
9. earth source heat pump training experimental according to claim 7, it is characterized in that: the air-conditioning side system return pipe (22) between described air-conditioning side water pump (24) and capsule formula Constant pressure tank (26) is connected with air-conditioning side pipe net filling pipe (5-4), is provided with air-conditioning side pipe net water compensating valve (25) on air-conditioning side pipe net filling pipe (5-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320867630.XU CN203616939U (en) | 2013-12-27 | 2013-12-27 | Ground source heat pump practical-training experiment table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320867630.XU CN203616939U (en) | 2013-12-27 | 2013-12-27 | Ground source heat pump practical-training experiment table |
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| CN203616939U true CN203616939U (en) | 2014-05-28 |
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| CN201320867630.XU Expired - Fee Related CN203616939U (en) | 2013-12-27 | 2013-12-27 | Ground source heat pump practical-training experiment table |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567105A (en) * | 2015-01-28 | 2015-04-29 | 中国科学院沈阳应用生态研究所 | Energy efficiency optimization method and system for ground-source heat pump system |
| CN105096683A (en) * | 2015-08-06 | 2015-11-25 | 天津市职业大学 | Air-conditioner hydraulic pipe network transmission and distribution and control practical training device |
| CN110675695A (en) * | 2019-10-19 | 2020-01-10 | 广州番禺职业技术学院 | Comprehensive training field for underground pipeline exploration |
-
2013
- 2013-12-27 CN CN201320867630.XU patent/CN203616939U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567105A (en) * | 2015-01-28 | 2015-04-29 | 中国科学院沈阳应用生态研究所 | Energy efficiency optimization method and system for ground-source heat pump system |
| CN105096683A (en) * | 2015-08-06 | 2015-11-25 | 天津市职业大学 | Air-conditioner hydraulic pipe network transmission and distribution and control practical training device |
| CN110675695A (en) * | 2019-10-19 | 2020-01-10 | 广州番禺职业技术学院 | Comprehensive training field for underground pipeline exploration |
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