Thermoelectric mixed charging type mobile vehicle-mounted phase change energy storage heat pool for oil field hot water station
By designing a mobile vehicle-mounted phase change energy storage pool for oilfield hot water stations, utilizing multiple clean energy sources for heating and combining them with an intelligent control system, the high energy consumption and high carbon emissions of hot water supply in oilfield hot water stations have been solved, realizing portable mobile heat supply and efficient energy utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-20
- Publication Date
- 2026-04-03
AI Technical Summary
The hot water supply of existing oilfield hot water stations mainly relies on gas-fired boilers, which has the problems of high gas consumption and high carbon emissions. There is a need to provide a clean energy alternative to achieve portable and mobile heat supply.
Design a mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations. The pool uses a transport vehicle as a carrier and combines a phase change energy storage device, a heating system, and an intelligent control system. It utilizes multiple energy sources such as solar energy, industrial waste heat, wind energy, and municipal grid electricity for heating, and achieves temperature regulation through intelligent control.
Effectively utilize clean energy, improve energy efficiency, realize portable and mobile heat supply, reduce conventional energy consumption, adapt to emergency and temporary heat demand, and reduce carbon emissions.
Smart Images
Figure CN121782914A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of new energy technology, specifically relating to a mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations that combines thermoelectric charging and thermal power generation. Background Technology
[0002] Petroleum is the lifeblood of industry, supporting the vigorous development of transportation, aerospace, and modern automobile industries, and serving as a crucial raw material for chemical products such as plastics, textiles, and synthetic rubber. Most of my country's oil fields are located in high-latitude, frigid regions, producing crude oil with high viscosity. To ensure normal extraction, this crude oil must be heated.
[0003] Oilfield hot water stations are production auxiliary stations specifically built to provide hot water for oil well operations, chemical dosing, well washing, and oil gathering ring hot washing. Currently, the hot water used in oil well operations is usually obtained by heating with gas-fired boilers in hot water stations. This method has problems such as high gas consumption and high carbon emissions. Therefore, clean heat replacement for oilfield hot water stations is imperative, requiring a new type of mobile, vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations. Summary of the Invention
[0004] The present invention aims to at least partially solve one of the technical problems in the aforementioned related technologies.
[0005] Therefore, the purpose of this invention is to provide a mobile vehicle-mounted phase change energy storage pool for oilfield hot water stations that can not only improve the utilization rate of clean energy, but also realize portable mobile heat supply.
[0006] To solve the above-mentioned technical problems, the present invention is implemented as follows: This invention provides a mobile, vehicle-mounted phase change energy storage pool for oilfield hot water stations, the energy storage pool comprising: Supporting structure: A transport vehicle is used as a mobile carrier to achieve portable heat supply; Thermal storage core: includes several phase change energy storage devices installed inside the thermal storage box, configured to store and release heat; Heating system: includes heating coils installed in the phase change energy storage device and electric heating plates installed in the heat storage box, configured to heat the phase change energy storage device so that it can store heat; Power supply interface: Configured to enable the energy supply connection from the thermal storage core to the energy-requiring equipment.
[0007] In addition, the mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to the present invention may also have the following additional technical features: In some embodiments, the energy storage thermal pool further includes: Temperature control system: includes several temperature sensing elements installed at the inlet and outlet of the heating coil and inside the heat storage box, and an intelligent control center installed in the transport vehicle; the temperature sensing elements are used to detect the real-time temperature at the corresponding location, and the intelligent control center is used to adjust the flow rate of the heating medium in the heating coil according to the real-time temperature to achieve temperature control.
[0008] In some embodiments, the heating coil is equipped with several electric valves, which are electrically connected to the intelligent control center and can adjust the valve opening degree under the control of the intelligent control center.
[0009] In some embodiments, the phase change energy storage device includes a phase change bed mounting bracket, a phase change bed, and a phase change energy storage sphere; The phase change stacking bed is evenly distributed with a number of phase change ball mounting holes, and the phase change energy storage ball is embedded in the phase change ball mounting holes on the phase change stacking bed. Each layer of the phase change bed has a sheet metal base for support to prevent the balls from falling; a high-temperature resistant silicone buffer ring is placed on the sheet metal base to provide shock absorption.
[0010] In some embodiments, the phase change energy storage sphere comprises a stainless steel shell, copper foam, and paraffin wax; the copper foam encapsulates the paraffin wax and is disposed within the stainless steel shell.
[0011] In some of these embodiments, the phase change energy storage ball is fixed inside the phase change mounting hole by a sealing device; The sealing device includes a sealing ring, a spring, and a pulley. The sealing ring consists of four parts, each of which includes two right-angled sides and one arc-shaped side. One end of the spring is fixedly connected to the phase change bed mounting bracket on the corresponding side, and the other end is fixedly connected to one right-angled side of one part of the sealing ring. The other right-angled side of that part of the sealing ring is slidably connected to the edge of the adjacent phase change bed mounting bracket through the pulley. The slidably connected side is perpendicular to the side connected by the spring.
[0012] In some embodiments, the stainless steel shell has a porosity of 60%-70%, which decreases from top to bottom to improve heat transfer efficiency. The outer diameters of the phase change energy storage spheres in adjacent upper and lower layers increase in a ratio of 1:1.05 along the direction of gravity.
[0013] In some embodiments, paraffin-based phase change energy storage spheres with a melting point of 45 ºC are placed on both sides of the phase change bed, and paraffin-based phase change energy storage spheres with a melting point of 65 ºC are placed in the middle area, so that heat utilization is achieved based on the latent heat of phase change materials with different melting points.
[0014] In some embodiments, the exterior of the thermal storage box is covered with glass wool, a thermal insulation material.
[0015] In some embodiments, the heating coil is connected to external industrial waste heat, solar thermal and / or wind power heating equipment for heat transfer.
[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In this embodiment of the invention, the mobile vehicle-mounted phase change energy storage pool for oilfield hot water stations, which is a hybrid thermal power generation system, can effectively utilize solar energy, industrial waste heat, and geothermal energy for heating. In the absence of sunlight, it can also utilize off-peak municipal grid electricity or green electricity for electric heating, effectively solving the problems of intermittent and unstable heating from new energy sources and low utilization rate of industrial waste heat. In this embodiment of the invention, the provided mobile vehicle-mounted phase change energy storage tank for oilfield hot water stations is filled with phase change materials of different melting points in three areas of the heat storage box, and the phase change energy storage spheres are filled with copper foam of different specifications to improve the phase change energy storage thermal efficiency. In this embodiment of the invention, the provided mobile vehicle-mounted phase change energy storage tank for oilfield hot water stations uses a thermoelectric hybrid charging system. According to the specific operating scenario, the intelligent control center controls the opening and closing of electric heating plates and electric valves of different power in the system, and intelligently controls the temperature of the heat storage tank in real time. This invention transforms the originally fixed thermal storage tank into a vehicle-mounted one, reducing the time consumption caused by distance in production operations. Whether in the emergency heat supply stage in industrial production or in thermal energy demand scenarios with temporary and mobile characteristics, this invention can respond quickly, greatly improving the overall energy utilization rate, thereby saving valuable time resources for related operations. Compared with the existing gas boiler heating system on the market, this system effectively reduces conventional energy consumption, and its market development prospects are bright.
[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description Figure 1 This is a schematic diagram of a mobile vehicle-mounted phase change energy storage pool for oilfield hot water stations, disclosed in one embodiment of the present invention. Figure 2 This is a side view of a heat storage box according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a phase change bed disclosed in one embodiment of the present invention; Figure 4 This is a schematic diagram of a sealing device disclosed in one embodiment of the present invention; Figure 5 This is a schematic diagram of a phase change energy storage sphere structure disclosed in one embodiment of the present invention.
[0018] Explanation of reference numerals in the attached figures: 1: Thermal storage box; 2: Phase change energy storage device; 2-1: Phase change stacked bed mounting bracket; 2-2: Phase change stacked bed; 3: Transport vehicle; 4: Intelligent control center; 5: Heating coil; 6: Electric valve; 7: Temperature sensing element; 8: Energy supply device; 8-1: Charging port; 8-2: Heat charging port; 9: Electric heating plate; 10: Phase change energy storage ball; 10-1: Stainless steel; 10-2: Foamed copper; 10-3: Paraffin wax; 11: Phase change ball mounting hole; 12: Sealing device; 12-1: Sealing ring; 12-2: Spring; 12-3: Pulley; 13: Glass wool; 14: Inlet valve; 15: Outlet valve. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.
[0021] In some embodiments of the present invention, a mobile vehicle-mounted phase change energy storage pool for oilfield hot water stations is provided, comprising a phase change energy storage device, a heat storage box, heating coils, electric heating plates, temperature sensing elements, an intelligent control center, electric valves, an energy supply device, a transport vehicle, an inlet valve, and an outlet valve. The phase change energy storage spheres are made of stainless steel, foamed copper, and paraffin wax, and are neatly arranged within the phase change energy storage device. The heat storage box is externally covered with heat-insulating glass wool, and internally includes phase change energy storage spheres, temperature sensing elements, electric heating plates I, II, and III. The heat storage box is divided into three areas according to the power of the electric heating plates, each containing phase change energy storage spheres of different specifications. The charging port and heating port of the energy supply device are located at the bottom left side of the heat storage box, with the charging port connected to the electric heating plates. The temperature sensing elements are arranged in a snowflake pattern at the fluid inlet and outlet of the heating coils and within the heat storage box, and the temperature at these points is monitored in real time by the intelligent control center.
[0022] In some embodiments of the present invention, various energy sources such as industrial waste heat, solar thermal energy, and wind energy are used to replace the heat supply of traditional gas-fired boilers, thereby reducing conventional energy consumption.
[0023] In some embodiments of the present invention, the phase change energy storage sphere is filled with paraffin wax, and the outer diameters of adjacent upper and lower phase change energy storage spheres are distributed in an increasing ratio of 1:1.05 along the direction of gravity.
[0024] Furthermore, the phase change energy storage sphere is filled with copper foam with a porosity of 60%-70%, and the porosity decreases from top to bottom to improve heat transfer efficiency.
[0025] In the above embodiment, according to the three divided regions, paraffin-based phase change energy storage balls with a melting point of 45°C are placed on both sides of the phase change bed, and paraffin-based phase change energy storage balls with a melting point of 65°C are placed in the middle region, so that heat utilization is realized based on the latent heat of phase change materials with different melting points.
[0026] In some embodiments of the present invention, the temperature sensing element monitors the temperature at the measuring point in real time and transmits the monitoring data to the intelligent control center. When the incoming liquid temperature meets the set temperature requirement, the intelligent control center issues a command, and the electric valve starts to operate. The electric valve achieves precise regulation of the supplied heat by precisely controlling the incoming liquid flow rate.
[0027] In some embodiments of the present invention, the heat storage box and the heating coil in contact with the outside are wrapped with heat-insulating glass wool.
[0028] In some embodiments of the present invention, the heat storage tank, heating coil, phase change ball stacking bed, mounting bracket, electric valve and inlet / outlet valve are all made of 316 stainless steel with good corrosion resistance.
[0029] Furthermore, the inner and outer walls of the heating coil are coated with urushiol epoxy anti-corrosion material to prevent the phase change material and heat transfer fluid from corroding the fluid channel.
[0030] Example 1 Please see Figure 1-2 As shown, the mobile vehicle-mounted phase change energy storage tank for oilfield hot water stations provided in this embodiment includes a heat storage tank 1, a phase change energy storage device 2, a transport vehicle 3, an intelligent control center 4, heating coils 5, electric valves 6, temperature sensing elements 7, an energy supply device 8, an electric heating plate 9, an inlet valve 14, and an outlet valve 15. The heat storage tank 1 and the intelligent control center 4 are both mounted on the transport vehicle 3 and are connected, operating under the control of the intelligent control center 4. The phase change energy storage device 2 is embedded inside the heat storage tank 1. The heating coils 5 are arranged inside the phase change energy storage device 2 for heating corresponding locations within the phase change energy storage device 2. Several electric valves 6 are installed on the heating coils 5 and connected to the intelligent control center 4 to control the flow rate of the heating medium within the heating coils 5, thereby achieving temperature control.
[0031] The phase change energy storage device 2 is composed of four independent phase change stacked bed mounting brackets 2-1 and four phase change sphere stacked beds 2-2. The phase change energy storage spheres 10 are placed in the evenly distributed phase change sphere mounting holes 11 on the phase change sphere stacked bed 2-1 and are fixed by the sealing device 12. Figure 3 As shown, the number of phase change energy storage spheres 10 and phase change sphere mounting holes 11 are one-to-one and there are several of them. The phase change energy storage sphere 10 is composed of stainless steel 10-1, foamed copper 10-2, and paraffin wax 10-3, as shown... Figure 5 As shown, stainless steel 10-1 is located on the outermost layer, and copper foam 10-2 is used to fill the interior of paraffin wax 10-3 wrapped in it; the sealing device includes a sealing ring 12-1, a spring 12-2, and a pulley 12-3, as shown. Figure 4 As shown, the sealing ring 12-1 consists of four parts, each of which includes two right-angled sides and one arc-shaped side; one end of the spring 12-2 is fixedly connected to the phase change bed mounting bracket 2-1 on the corresponding side, and the other end is fixedly connected to one right-angled side of one part of the sealing ring 12-1. The other right-angled side of that part of the sealing ring 12-1 is slidably connected to the edge of the adjacent phase change bed mounting bracket through the pulley 12-3; the sliding connection side is perpendicular to the side connected to the spring.
[0032] In some embodiments of the present invention, the phase change bed mounting bracket 2-1 includes several bracket units connected in sequence. Each bracket unit has an I-shaped protrusion and a T-shaped groove at both ends. The I-shaped protrusion is embedded in the T-shaped groove of the previous bracket unit, forming a structure that is connected end to end in sequence.
[0033] In some embodiments of the present invention, a sheet metal is arranged at the bottom of each phase change bed to support the bottom and prevent the small balls from falling. A high-temperature resistant silicone buffer ring is arranged at the sheet metal to provide shock absorption.
[0034] The thermal storage box 1 is externally covered with heat-insulating glass wool 13, and internally contains the aforementioned phase change energy storage device 2 and temperature sensing element 7. At its bottom, it also contains several sets of electric heating plates, including electric heating plate-I (9-1), electric heating plate-II (9-2), and electric heating plate-III (9-3). The phase change bed is divided into three areas according to the power of the electric heating plates, each containing phase change energy storage balls 10 of different specifications. The energy supply device includes a charging port 8-1 and a heating port 8-2, both located at the front bottom of the thermal storage box 1. The electric heating plate 9 is connected to the charging port 8-1, which is connected to the intelligent control center 4, forming a heating circulation loop. The intelligent control center 4 includes a PLC control center, a digital-to-analog converter, and an industrial computer. The temperature sensing element 7 has measuring points arranged in a snowflake pattern at the fluid inlet and outlet of the heating coil and inside the thermal storage box, and is connected to the intelligent control center 4. The electric valve 6 is controlled by the intelligent control center 4 based on the temperature sensing element 7.
[0035] The specific workflow of this invention will be described below.
[0036] Energy supply process: Based on meteorological conditions, the following energy supply methods are proposed. (1) When the solar radiation intensity is insufficient (light intensity < 300W / m) 2 In environments such as nighttime or high-temperature conditions, this invention cleverly utilizes the peak-valley characteristics of municipal power grids to obtain inexpensive energy. During off-peak hours, municipal power becomes the primary energy source, and electrical energy is transferred to the electric heating plate via a charging port located at the bottom of the thermal storage tank. The charging port supports 220V voltage and features quick-plug connection, ensuring convenient and stable power supply. After receiving electrical energy, the electric heating plate begins heating the phase change energy storage spheres within the phase change energy storage device. The phase change energy storage spheres are filled with copper foam with a porosity of 60%-70%, decreasing from top to bottom. This structural design effectively increases the thermal conductivity of the paraffin wax. Under the action of the electric heating plate, heat is rapidly transferred within the phase change energy storage spheres, and the paraffin wax begins to store thermal energy, preparing for the subsequent hot water heating process.
[0037] (2) Under conditions of sufficient sunlight intensity (light intensity > 300W / m) 2 The system prioritizes solar energy to heat the phase change energy storage spheres. Solar energy is collected and converted into heat energy, which is stored in the phase change energy storage spheres. If local wind resources are abundant (25 m / s > wind intensity > 3 m / s), wind power generation will play an important role. The electricity generated by wind power supplies the electric heating panels, which act as energy conversion hubs, converting the electrical energy back into heat energy to heat the phase change energy storage spheres. This method complements solar heating, making full use of natural resources and improving the diversity and stability of energy sources.
[0038] (3) When solar and wind energy are insufficient, the system can utilize industrial waste heat for heating. Industrial waste heat enters the system through a charging port located at the bottom of the heat storage tank. This charging port is a DN100 movable piston head with a threaded locking connection, ensuring efficient and airtight waste heat transfer. The large amount of heat energy carried by the industrial waste heat is transferred to the phase change energy storage ball. The paraffin absorbs the heat, maintaining the heat energy reserve inside the heat storage tank and meeting the continuous demand for hot water in oilfield operations.
[0039] Heating Process: As the incoming liquid flows through the heating coil, it exchanges heat with the phase change energy storage spheres of the phase change energy storage device. The inner and outer walls of the heating coil are coated with urushiol epoxy anti-corrosion material. This design effectively prevents corrosion of the fluid channels by the phase change material and the heat transfer fluid, ensuring the long-term stable operation of the system. The paraffin wax phase change energy storage material in the phase change energy storage spheres has high latent heat characteristics, allowing it to continuously heat the incoming liquid. Furthermore, the heat energy stored inside the paraffin wax is transferred to the surrounding copper foam through heat conduction. The copper foam, with its excellent thermal conductivity, rapidly transfers the heat to the entire surface of the phase change energy storage spheres, and then to the hot water flowing inside the heating coils.
[0040] During the heat exchange process, temperature sensors monitor the temperature at various points in real time, including the inlet and outlet of the heating coil fluid and the temperatures at various points on the phase change sphere bed. The sensors are arranged in a snowflake pattern to ensure accurate acquisition of temperature changes within the system and transmit the monitoring data to the intelligent control center. The intelligent control center, as the core of the entire system's intelligent control, receives the data from the temperature sensors and performs rapid analysis and judgment. When the incoming fluid temperature meets the set temperature requirements, the intelligent control center issues a command, and the electric valve begins operation. The electric valve precisely controls the incoming fluid flow rate to achieve precise regulation of the supplied heat. For example, when the incoming fluid temperature is slightly lower than the set value, the flow rate is appropriately reduced to prolong the residence time of the incoming fluid in the heat storage tank, allowing it to fully absorb the heat released by the phase change energy storage spheres; when the temperature approaches or reaches the set value, a suitable flow rate is maintained to ensure the incoming fluid remains stable within the required temperature range. After temperature regulation, once the incoming fluid reaches the set temperature, it can be transported to the oil well for hot washing operations.
[0041] In summary, a mobile, vehicle-mounted phase change energy storage (PCE) thermal power plant for oilfield hot water stations can effectively utilize solar, wind, industrial waste heat, and geothermal energy for heating. Simultaneously, in the absence of sunlight or wind, it can utilize off-peak municipal grid electricity or green electricity to ensure electric heating, effectively solving the problems of intermittent and unstable heating from new energy sources such as solar power and low utilization rates of industrial waste heat. In addition to paraffin wax, the PCE spheres are filled with copper foam to improve the thermal efficiency of PCE storage. Furthermore, PCE materials with different melting points are arranged on both sides and in the middle of the PCE bed to improve heat transfer performance. Depending on the specific operational scenario, the intelligent control center controls the start and stop of electric heating plates and electric valves of different power levels in the system, achieving real-time intelligent temperature control. It has advantages such as simple operation, stable operation, and low carbon footprint.
[0042] Any part of this invention not described in detail can be referred to in the prior art or in the art known to those skilled in the art. This embodiment does not limit such part and will not describe it in detail here.
[0043] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.
Claims
1. A mobile, vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations, characterized in that, The energy storage thermal pool includes: Supporting structure: A transport vehicle is used as a mobile carrier to achieve portable heat supply; Thermal storage core: includes several phase change energy storage devices installed inside the thermal storage box, configured to store and release heat; Heating system: includes heating coils installed in the phase change energy storage device and electric heating plates installed in the heat storage box, configured to heat the phase change energy storage device so that it can store heat; Power supply interface: Configured to enable the energy supply connection from the thermal storage core to the energy-requiring equipment.
2. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 1, characterized in that, The energy storage thermal pool also includes: Temperature control system: includes several temperature sensing elements installed at the inlet and outlet of the heating coil and inside the heat storage box, and an intelligent control center installed in the transport vehicle; the temperature sensing elements are used to detect the real-time temperature at the corresponding location, and the intelligent control center is used to adjust the flow rate of the heating medium in the heating coil according to the real-time temperature to achieve temperature control.
3. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 2, characterized in that, The heating coil is equipped with several electric valves, which are electrically connected to the intelligent control center and can adjust the valve opening degree under the control of the intelligent control center.
4. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 1, characterized in that, The phase change energy storage device includes a phase change bed mounting bracket, a phase change bed, and a phase change energy storage sphere; The phase change stacking bed is evenly distributed with a number of phase change ball mounting holes, and the phase change energy storage ball is embedded in the phase change ball mounting holes on the phase change stacking bed. Each layer of the phase change bed has a sheet metal base for support to prevent the balls from falling; a high-temperature resistant silicone buffer ring is placed on the sheet metal base to provide shock absorption.
5. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 4, characterized in that, The phase change energy storage ball includes a stainless steel shell, copper foam, and paraffin wax; the copper foam encapsulates the paraffin wax and is filled within the stainless steel shell.
6. The mobile vehicle-mounted phase change energy storage pool for oilfield hot water stations according to claim 4, characterized in that, The phase change energy storage ball is fixed inside the phase change mounting hole by a sealing device; The sealing device includes a sealing ring, a spring, and a pulley. The sealing ring consists of four parts, each of which includes two right-angled sides and one arc-shaped side. One end of the spring is fixedly connected to the phase change bed mounting bracket on the corresponding side, and the other end is fixedly connected to one right-angled side of one part of the sealing ring. The other right-angled side of that part of the sealing ring is slidably connected to the edge of the adjacent phase change bed mounting bracket through the pulley. The slidably connected side is perpendicular to the side connected by the spring.
7. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 4, characterized in that, The stainless steel shell has a porosity of 60%-70%, and the porosity decreases from top to bottom to improve heat transfer efficiency. The outer diameters of the phase change energy storage spheres in adjacent upper and lower layers increase in a ratio of 1:1.05 along the direction of gravity.
8. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 1, characterized in that, Paraffin-based phase change energy storage spheres with a melting point of 45 ºC are placed on both sides of the phase change stacking bed, and paraffin-based phase change energy storage spheres with a melting point of 65 ºC are placed in the middle area, so that heat utilization is realized based on the latent heat of phase change materials with different melting points.
9. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 1, characterized in that, The exterior of the heat storage box is covered with glass wool, a heat-insulating material.
10. The mobile vehicle-mounted phase change energy storage thermal pool for oilfield hot water stations according to claim 1, characterized in that, The heating coil is connected to external industrial waste heat, solar thermal and / or wind power heating equipment for heat transfer.