CN206470224U - Heat pipe is simulated to be applied to geothermal heating and determine the experimental provision of heat pipe for thermal conductivity coefficient - Google Patents

Abstract

The utility model relates to an experimental device for simulating heat pipes applied to geothermal heating and measuring the thermal conductivity of heat pipes. ), it is characterized in that the hot end and the cold end of the heat pipe (7) extend into the hot water tank (5) and the cold water tank (10) respectively, and the hot water tank (5) is built with materials for simulating the geothermal environment, and Resistance wire (31) is laid on the inner wall, and resistance wire (31) is provided with power supply and regulated power by power regulator (32); cold water tank (10) or hot water tank (5) can be moved to adjust the distance between the cold water tank and the hot water tank. horizontal distance.

Description

Experimental device for simulating heat pipes applied to geothermal heating and measuring the thermal conductivity of heat pipes

technical field

The utility model relates to the field of solid thermophysical property testing, in particular to an experimental device for simulating a heat pipe applied to geothermal heating and measuring the thermal conductivity of the heat pipe.

Background technique

High-quality heat pipes that conduct heat better than any known metal. Therefore, the application of heat pipe technology in engineering is becoming more and more popular. It not only achieves remarkable results in waste heat recovery and energy saving, but also shows strong vitality in the renovation of traditional heat and mass transfer equipment and the cooling of non-traditional electronic components. This requires a safe, reliable, easy-to-operate, high-accuracy, and wide-ranging equipment that can measure the thermal conductivity of heat pipes; further, if it can simulate the working conditions of heat pipes under specific working conditions, the measuring device will have more advantages. For example, the application of heat pipes in simulating geothermal heating.

Contents of the invention

The purpose of this utility model is to provide an experimental device that simulates the application of heat pipes in geothermal heating and can measure the thermal conductivity of heat pipes. The experimental device of this utility model can expand the power range of heat pipe experiments, and the equipment is easy to operate and conforms to the actual application of heat pipes. The technical scheme that the utility model adopts is:

An experimental device for simulating heat pipes applied to geothermal heating and measuring the thermal conductivity of heat pipes, including cold water circuit II, heat pipe 7, cold water tank 10 and hot water tank 5 connected to cold water circuit II through pipelines, characterized in that the heat pipe 7 The hot water tank 5 and the cold end extend into the hot water tank 5 and the cold water tank 10 respectively. The hot water tank 5 has a built-in material for simulating the geothermal environment, and resistance wires 31 are laid on the inner walls around it. The resistance wire 31 is powered and regulated by a power regulator 32 Power; the cold water tank 10 or the hot water tank 5 can be moved to adjust the horizontal distance between the cold water tank and the hot water tank.

Preferably, temperature sensors are provided at different positions of the heat pipe 7 , inlets and outlets of the hot water tank 5 and the cold water tank 10 . The cold water circuit II includes a refrigerator 14 and a variable frequency water pump 16. A water inlet valve 13 is provided on the outlet of the refrigerator 14 and the pipeline connected to the cold water tank 10, and on the pipeline connected between the inlet of the refrigerator 14 and the bottom of the cold water tank. A variable frequency water pump 16, a flow meter 18 and a water return valve 17 are provided. There are support wheels 2 at the bottom of the cold water tank 10 . A stirring wheel 11 is arranged in the cold water tank 10 .

The positive effect of the utility model is that it provides an experimental device for simulating heat pipes applied to geothermal heating and measuring the thermal conductivity of heat pipes, which can expand the experimental power range of heat pipes, is simple to operate, and conforms to the actual application of heat pipes. Specifically:

(1) In terms of expanding the power range of the heat pipe experiment: the cold water circuit includes a frequency conversion water pump, a water inlet valve, and a water return valve. Adjust the cooling power of the refrigerator, adjust the frequency of the water pump or the opening of the valve, and then change the fluid temperature and fluid flow rate, and assist in controlling the heating power of the resistance wire, so as to achieve the purpose of adjusting the power of the heat pipe experiment;

(2) For the simple operation of the equipment: there are bracket wheels installed at the bottom of the cold water tank, and the movement of the bracket wheels can adjust the horizontal distance between the cold water tank and the hot water tank, thereby changing the length of the hot end and cold end of the heat pipe, and is suitable for heat pipes of different lengths experiment of. In addition, as in (1), the operation of adjusting the experimental power of the heat pipe is simple;

(3) For the actual application of heat pipes: the cold end is in contact with the fluid. When stones or mud are arranged in the hot water tank, due to the existence of resistance wires, heat pipes can be simulated for geothermal heating.

Description of drawings

Fig. 1 is a structural schematic diagram of an experimental device for simulating heat pipes applied to geothermal heating and measuring the thermal conductivity of heat pipes;

Fig. 2 is a schematic diagram of arrangement of resistance wires on the surrounding inner walls of the hot water tank in Fig. 1 .

The marks of the components in the drawings are as follows: Ⅰ, hot water circuit; Ⅱ, cold water circuit; 1, hot water boiler; 2, heat exchanger; 3, 13, water inlet valve; 4, 9, 11, 12, 28, 29. Thermocouple; 5. Hot water tank; 6, 11. Stirring wheel; 7. Heat pipe; 8. Insulation layer; 10. Cold water tank; 14. Refrigerator; 15, 27. Base; 16, 26. Frequency conversion water pump; 17,25, return valve; 18,24, mass flow meter; 19,30, drain valve; 20,23, bracket; 21, bracket wheel; 22, heat pipe bracket; 31, resistance wire; 32, power controller; 33. Ammeter; 34. Voltmeter.

detailed description

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly .

Please refer to Fig. 1 and Fig. 2, the utility model embodiment comprises:

Experimental device for simulating heat pipes applied to geothermal heating and measuring the thermal conductivity of heat pipes, specifically including hot water circuit I, cold water circuit II, hot water tank 5 connected to hot water circuit I through pipes, and cold water tank connected to cold water circuit II through pipes 10, and the hot end and cold end go deep into the heat pipe 7 in the hot water tank 5 and the cold water tank 10 respectively, so as to ensure that the device can measure the thermal conductivity of the heat pipe and simulate the application of the heat pipe in geothermal heating.

Resistance wire 31 is laid on the inner wall around the hot water tank 5, and the resistance wire 31 is supplied with power by the power controller 32 to adjust the power to ensure the adjustment and auxiliary adjustment of the heat pipe experiment power. Rocks or mud in the water tank 5 provide heat.

The hot water circuit I includes a hot water boiler 1, a heat exchanger 2, a water inlet valve 3, a flow meter 24, a return valve 25, and a frequency conversion water pump 26. The cold water circuit II includes a refrigerator 14 , a water inlet valve 13 , a flow meter 18 , a water return valve 17 , and a variable frequency water pump 16 . Adjust the heating power of the hot water boiler, adjust the cooling power of the refrigerator, adjust the frequency of the water pump or the opening of the valve, and then change the fluid temperature and fluid flow rate to ensure that the power of the heat pipe experiment can be adjusted.

There are support wheels 2 at the bottom of the cold water tank 10, and the movement of the support wheels 2 ensures that the horizontal distance between the cold water tank and the hot water tank can be adjusted, thereby changing the length of the hot end and the cold end of the heat pipe, and is suitable for experiments with heat pipes of different lengths.

The stirring wheel 6 is arranged in the hot water tank 5, and the stirring wheel 11 is arranged in the cold water tank 10, and the agitation of the stirring wheel ensures that the heat exchange between the fluid and the heat pipe is uniform.

Claims (5)

1. An experimental device for simulating heat pipes applied to geothermal heating and measuring heat pipe thermal conductivity, comprising cold water circuit II, heat pipes (7), cold water tank (10) and hot water tank (5) connected to cold water circuit II by pipelines, It is characterized in that the hot end and cold end of the heat pipe (7) extend into the hot water tank (5) and the cold water tank (10) respectively; The resistance wire (31), the resistance wire (31) provides power and regulates the power by the power regulator (32); the cold water tank (10) or the hot water tank (5) can move, to adjust the level between the cold water tank and the hot water tank distance. 2. The experimental device according to claim 1, characterized in that temperature sensors are respectively arranged at different positions of the heat pipe (7), the inlet and the outlet of the hot water tank (5) and the cold water tank (10). 3. experimental device according to claim 1, is characterized in that, cold water loop II comprises refrigerator (14) and frequency conversion water pump (16), and the outlet of refrigerator (14) is communicated with the pipeline of cold water tank (10) A water inlet valve (13) is arranged on the top, and a frequency conversion water pump (16), a flow meter (18) and a water return valve (17) are arranged on the pipeline communicated between the inlet of the refrigerator (14) and the bottom of the cold water tank. 4. The experimental device according to claim 1, characterized in that there are bracket wheels (2) at the bottom of the cold water tank (10). 5. The described experimental device according to claim 1, characterized in that a stirring wheel (11) is arranged in the cold water tank (10).