CN115585495A - A low temperature phase change energy storage energy pile - Google Patents

Abstract

The invention discloses an energy pile for low-temperature phase change energy storage, which comprises a pile body, the inner side of the pile body is filled with a phase change material, the center of the phase change material is cavity-shaped, and the inner cavity of the phase change material is A filter material is provided, a water supply pipe is vertically interspersed in the phase change material, a water pump is arranged above the central cavity of the phase change material, and a return pipe is connected to the water pump, and the inside of the phase change material is from top to bottom Temperature sensors are arranged at the lower interval, and signal lines are connected between the temperature sensors. The invention circulates the pipeline between the solar heat collection system and the energy pile, so that the phase change material in the pile body can store and release the passing heat, which can adjust the contradiction between energy supply time and space, and improve energy efficiency. Recycling and Utilization.

Description

A low temperature phase change energy storage energy pile

technical field

The invention relates to the technical field of heating, in particular to an energy pile for low-temperature phase change energy storage.

Background technique

With the rapid development of my country's economic construction, my country's demand for energy is increasing day by day, and the pressure of CO2 emission reduction has increased significantly. In recent years, my country has continued to promote clean heating in the northern region. In urban areas, centralized heating is the mainstay, with a high proportion of coal combustion, and urban gas heating is developing rapidly. Household heating is the main method in rural areas, and commercial energy for heating is mostly non-commercial energy such as coal, briquette, firewood, and straw. In the gradual promotion of clean heating in winter in various provinces, there are still problems such as unreasonable technical paths and inadequate management coordination. The heat source of conventional heating is fossil energy such as coal, fuel oil, gas, etc., which inevitably produces a large amount of pollutants and affects the surrounding environment. In order to solve this problem, relevant personnel have proposed the technical means of using solar energy for heating, using clean solar energy to replace fossil energy for heating.

Solar heating is intermittent in actual implementation and is easily affected by the weather. Solar irradiance changes with the four seasons and is strongest in summer and weakest in winter. It is intermittent, unstable, and out of sync with heat demand. its development. The existing auxiliary facilities are generally air source heat pump or electric heating. The auxiliary facilities have the following defects: 1. The air source heat pump unit inevitably produces noise during operation, which affects the normal production and life of the surrounding people. During the severe cold period, the heating capacity attenuates seriously, and frosting is prone to occur, and frequent defrosting is required to affect heating; 3. The use of electric heating requires a large amount of electrical load, which has high requirements on the power grid and the stability of the power supply of the project.

Contents of the invention

The object of the present invention is to provide an energy pile for low temperature phase change energy storage in order to solve the above problems.

The present invention achieves the above object through the following technical solutions:

An energy pile for low-temperature phase-change energy storage, comprising a pile body, the inside of the pile body is filled with a phase-change material, the center of the phase-change material is cavity-shaped, and the inner cavity of the phase-change material is provided with a filter material , the phase change material is vertically interspersed with a water supply pipe, the central cavity of the phase change material is provided with a water pump on the upper side, the water pump is connected with a return pipe, and the phase change material is arranged at intervals from top to bottom temperature sensors, signal lines are connected between the temperature sensors.

It is further provided that: the water supply pipe is evenly distributed in the phase change material in a ring shape, and the water outlet at the lower end of the water supply pipe is close to the bottom of the pile body.

It is further provided that water holes are provided on the outer diameter of the water supply pipe located in the phase change material.

Further setting: the phase change material is a low temperature phase change material.

It is further provided that the water supply pipe and the return water pipe are respectively connected to the solar heat collection system, the water supply pipe is connected to the water outlet of the solar heat collection system, and the water return pipe is connected to the water inlet of the solar heat collection system.

Further configuration: the temperature sensor is provided at least four places, and the signal line connects the temperature sensor to the control system.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. In the present invention, the excess solar energy is collected by the solar heat collection system in the non-heating season and then stored through energy piles, and released during heating in winter, which realizes peak-shaving and valley-filling of heat, and improves energy utilization rate;

2. The invention adopts low-temperature phase-change materials, which have the advantages of high energy density, simple device, convenient use and easy management; compared with high-temperature phase-change materials, it can effectively reduce heat loss, improve overall operating efficiency, and reduce initial investment costs ;

3. The present invention adopts the method of collecting solar heat energy, and the solar energy is inexhaustible. Compared with traditional fossil heating methods such as coal and gas, it achieves the purpose of saving energy and reducing emissions, reducing building energy consumption, and improving the effect of heating services;

4. The use of the present invention can effectively improve the energy utilization rate, save energy consumption, and achieve the goals of low carbon, energy saving, environmental protection, and green innovation;

5. The present invention adopts the method of installing a temperature sensor, which can monitor the temperature in real time, observe the energy storage or energy discharge, adjust the system operation in time, and improve the system operation efficiency.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural view of an energy pile for low-temperature phase change energy storage according to the present invention;

Fig. 2 is a schematic diagram of the main cross-sectional structure of an energy pile for low-temperature phase-change energy storage according to the present invention;

Fig. 3 is a schematic diagram of the structure of internal parts of a low-temperature phase-change energy storage energy pile according to the present invention.

The reference signs are explained as follows:

1. Pile body; 2. Phase change material; 3. Water supply pipe; 4. Return pipe; 5. Water pump; 6. Filter material; 7. Temperature sensor; 8. Signal line; 31. Water hole.

detailed description

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figures 1-3, an energy pile for low-temperature phase-change energy storage includes a pile body 1, and the inside of the pile body 1 is filled with a phase-change material 2. The center of the phase-change material 2 is hollow, and the phase-change material 2 The inner cavity is provided with a filter material 6, which is used to filter the water liquid after passing through the phase change material 2. The water supply pipe 3 is vertically interspersed in the phase change material 2, and a water pump is arranged in the upper part of the central cavity of the phase change material 2. 5. Pump the water after heat transfer into the solar heat collection system. The water pump 5 is connected to the return pipe 4, and the phase change material 2 is provided with temperature sensors 7 at intervals from top to bottom for sensing phase changes at different depths. The temperature of the material 2 is connected with the signal line 8 between the temperature sensors 7, and the detected data is transmitted to the control system for feedback.

Preferably: the water supply pipe 3 is uniformly distributed in the phase change material 2 in a ring shape, the water outlet at the lower end of the water supply pipe 3 is close to the bottom of the pile body 1, and the outer diameter of the water supply pipe 3 located in the phase change material 2 is provided with a water hole 31; The phase-change material 2 is a low-temperature phase-change material; the hot water from the solar heat collection system enters the phase-change material 2 at the bottom of the pile body 1, and then flows upward, so that the phase-change material 2 can fully absorb heat and prevent uneven heat distribution. average phenomenon.

Preferably: the water supply pipe 3 and the return pipe 4 are respectively connected to the solar heat collection system, the water supply pipe 3 is connected to the water outlet of the solar heat collection system, and the return pipe 4 is connected to the water inlet of the solar heat collection system; The water pipe 4 and the water supply pipe 3 allow the water liquid in the solar heat collection system to circulate from the energy pile to achieve the purpose of heat storage.

Preferably: temperature sensor 7 is provided with at least four places, and signal line 8 is connected temperature sensor 7 on the control system; Make temperature sensor 7 carry out the real-time monitoring of temperature data to the phase change material 2 of different depths, when temperature sensor 7 measured temperature When the temperature is higher than the maximum temperature set by the control system, the water pump 5 stops running and no longer stores heat in the energy pile to reduce the increase in heat loss caused by excessive temperature; when the temperature measured by the temperature sensor 7 is lower than the minimum temperature set by the control system , the water pump 5 starts to run, and starts to store heat in the energy pile.

The working principle and application process of the present invention: through the pipeline circulation between the water pump 5, the return water pipe 4, the water supply pipe 3 and the solar heat collection system, the water in the solar heat collection system enters the phase change material 2 through the water supply pipe 3, and phase change material 2 is phase-changed. The heat is absorbed by the phase-change material 2, and then the heat-released water is sent back from the energy pile to the solar heat collection system through the water pump 5 and the return pipe 4. Transmits temperature changes for control.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention.

Claims (6)

1. An energy pile for low-temperature phase-change energy storage, characterized in that: it comprises a pile body (1), the inside of the pile body (1) is filled with a phase-change material (2), and the center of the phase-change material (2) It is cavity-shaped, and the inner cavity of the phase change material (2) is provided with a filter material (6), and a water supply pipe (3) is vertically interspersed in the phase change material (2), and the phase change material ( 2) A water pump (5) is arranged on the upper part of the central cavity, and a return pipe (4) is connected to the water pump (5), and a temperature sensor (7) is arranged at intervals from top to bottom in the phase change material (2) , signal lines (8) are connected between the temperature sensors (7). 2. The energy pile for low-temperature phase change energy storage according to claim 1, characterized in that: the water supply pipe (3) is uniformly distributed in the phase change material (2) in a ring shape, and the water supply pipe (3) (3) The water outlet at the lower end is close to the bottom of the pile body (1). 3. A low-temperature phase change energy storage energy pile according to claim 2, characterized in that: the outer diameter of the water supply pipe (3) located in the phase change material (2) is provided with a water hole ( 31). 4. The energy pile for low-temperature phase-change energy storage according to claim 1, characterized in that: the phase-change material (2) is a low-temperature phase-change material. 5. The energy pile for low-temperature phase change energy storage according to claim 1, characterized in that: the water supply pipe (3) and the return water pipe (4) are respectively connected to a solar heat collection system, and the water supply pipe The pipe (3) is connected to the water outlet of the solar heat collection system, and the return pipe (4) is connected to the water inlet of the solar heat collection system. 6. The energy pile for low-temperature phase change energy storage according to claim 1, characterized in that: the temperature sensor (7) is provided at least four places, and the signal line (8) connects the temperature sensor (7) ) connected to the control system.

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