123 results about "Geothermal energy" patented technology

The invention discloses a lithosphere thermal structure analysis method, device and equipment and a storage medium, and relates to the technical field of geothermal energy analys.The method comprises the steps that rock information of a current area is obtained, a current lithosphere model is constructed, and the current lithosphere model is composed of a plurality of layers of lithologic units; according to the rock information and a preset temperature change rule, determining a surface earth heat flow value and a lithosphere bottom boundary position corresponding to the current lithosphere model; according to the rock information, determining a hierarchical heat flow value corresponding to each lithologic unit located above the bottom boundary position of the lithosphere, and obtaining a lithosphere heat flow value according to each hierarchical heat flow value; and determining a heat flow ratio parameter as a lithosphere thermal structure analysis result of the current area by combining the earth surface heat flow value and the lithosphere heat flow value. According to the method, the heat flow ratio parameter is obtained by performing layered modeling on the lithosphere, so that accurate quantification of the lithosphere thermal structure is realized from the aspects of heat source properties and a heat transfer mechanism, and the reliability of an analysis result is improved.

The invention relates to the technical field of multi-source data fusion and grid modeling, and discloses a shallow geothermal energy development modeling method, system and equipment based on multi-source data fusion. The method comprises the following steps: performing joint interpolation on shallow geothermal data, engineering geological data and hydrogeological data to generate a virtual drill hole; constructing a ground temperature grid model according to shallow geothermal data, virtual drilling and anisotropic interpolation constraints; performing step-by-step color setting and rendering on the shallow geothermal attribute grade of the geothermal grid model to obtain a visual geothermal grid model; and generating a stepped temperature distribution profile map and a temperature contour line according to the ground temperature grid model so as to display stepped features of temperature distribution. According to the method, the high-precision and high-reliability ground temperature grid model is constructed through multi-source data fusion, virtual drilling generation and anisotropic modeling technologies, and the model not only can generate a stepped temperature distribution profile map and a temperature contour line, but also can improve the geological parameter inversion precision and the thermal reservoir prediction reliability.

The present application discloses an oil-geothermal energy co-production system, comprising an oil-geothermal energy production and transportation mechanism and an injection and transportation mechanism. The oil-geothermal energy production and transportation mechanism comprises a negative pressure pipeline, an oil extraction portion is formed on the negative pressure pipeline, and the negative pressure pipeline is used to form negative pressure internally so as to extract oil from the oil extraction portion; and the injection and transportation mechanism comprises a plurality of flow-delivering pipelines, and the plurality of flow-delivering pipelines are evenly arranged around the peripheral side of the negative pressure pipeline and are spaced apart from the negative pressure pipeline, wherein each of the flow-delivering pipelines is provided with jetting portions, which are used for injecting supercritical carbon dioxide into petroleum. In the technical solution of the present application, by providing the jetting portions on each of the flow-delivering pipelines and evenly arranging the plurality of flow-delivering pipelines around the peripheral side of the negative pressure pipeline, supercritical carbon dioxide around the negative pressure pipeline can be distributed in a concentrated mode, thereby enhancing the fluidity of petroleum around the negative pressure pipeline, and thus accelerating the efficiency of petroleum extraction by the negative pressure pipeline.

The invention belongs to the technical field of tunnel terrestrial heat utilization in alpine regions, and particularly discloses a terrestrial heat three-dimensional heat preservation and ice melting system suitable for a cable fire ditch and a drainage ditch of an alpine deeply-buried highway tunnel. The terrestrial heat three-dimensional heat preservation and ice melting system comprises a terrestrial heat taking subsystem, a terrestrial heat pipe heat preservation result, a heat exchange unit and a heat supply subsystem. The terrestrial heat taking subsystem is connected with the heat exchange unit through a transmission pipeline, the heat supply subsystem is connected with the heat exchange unit through the terrestrial heat pipe heat preservation subsystem, and the terrestrial heat taking subsystem is located in a terrestrial heat source area which is about two kilometers away from a tunnel entrance. The system transmits heat to the cable trench and the drainage ditch through circulating high-temperature fluid, so that the temperature of the regions is always kept above a freezing point, and water in the cable, the fire-fighting pipeline and the drainage ditch is prevented from being frozen. The system has the advantages of being efficient, energy-saving, clean, environment-friendly, convenient to construct and the like, and meets the anti-freezing requirements of tunnel cables, fire-fighting pipelines and drainage ditches in the high and cold environment.

The utility model provides a cross-seasonal heat storage heating system based on terrestrial heat / waste heat and photovoltaic electric heating. The cross-seasonal heat storage heating system is composed of a hot water pool, a cold water pool, a middle water pool, an electric heating device, a heat pump heating device, a terrestrial heat or industrial waste heat source and a photovoltaic power station. Cold water enters the middle water pool after being heated by terrestrial heat and an industrial waste heat source, the temperature of the cold water generally cannot meet the heat supply requirement, then the water in the middle water pool is heated to meet the heat supply temperature through power generation of the photovoltaic power station and heating of the electric heating device, and then the water is stored in the hot water pool. During heat supply, water in the hot water pool enters a heat utilization load, return water enters the middle water pool and then is divided into two parts, waste heat of one part of water is extracted through the heat pump heating device to heat the other part of return water, hot return water enters the hot water pool to be stored, and cold return water enters the cold water pool to be stored. Decoupling of heat supply power of terrestrial heat or an industrial waste heat source is achieved, the heat supply power is not limited by the power of the heat source any more, and cross-season heat supply is achieved.

The invention discloses a deep and shallow coupling geothermal buried pipe building energy supply system and method, and belongs to the technical field of geothermal energy supply. Water outlets of medium-deep layer buried pipes of a first buried pipe group and a second buried pipe group of the system are connected with a main water supply pipeline, and water inlets of the medium-deep layer buried pipes of the first buried pipe group and the second buried pipe group are connected with a main water return pipeline; a water inlet of the shallow buried pipe is connected with the main water return pipeline, and a water outlet is connected with the main water supply pipeline; a water inlet of a shallow buried pipe of the first buried pipe group is connected with a main water return pipeline, and a water outlet of the shallow buried pipe of the first buried pipe group is communicated with a water inlet of a middle-deep buried pipe of the second buried pipe group; and water outlets of the middle-deep layer buried pipes of the first buried pipe group and the second buried pipe group are communicated with water inlets of the shallow layer buried pipes, so that outlet water of the middle-deep layer buried pipes passes through the shallow layer buried pipes and then enters a water supply main pipe. And the cooling / heating capacity of the shallow buried pipe system is greatly improved.

The invention discloses a hot spring mixing proportion and thermal storage temperature calculation method, which comprises the following steps: selecting hot spring samples, testing representative parameters of all the selected hot spring samples, analyzing error values, determining a representative water sample according to the analysis error values, performing hydrochemical analysis on the representative water sample to determine a geothermal temperature scale, and calculating the mixing proportion and thermal storage temperature of the hot spring according to a hydrochemical analysis result. And carrying out end member mixing analysis on the determined representative water sample, calculating a cold and hot water mixing ratio, finally correcting the SiO2 concentration according to the cold and hot water mixing ratio, and calculating to obtain the final heat storage temperature. According to the method, the influence of mixing of the thermal spring water and shallow cold water in the process of exposing the thermal spring water out of the earth surface is reduced, hydrochemistry, isotope and thermal storage characteristics are comprehensively considered, determination of the thermal spring water mixing proportion and accurate calculation of the thermal storage temperature are achieved, and a basis is provided for dividing cause types of a geothermal system and evaluating geothermal energy resource potential.

The invention discloses a coal mining full-life-cycle coal, gas and heat combined development method which comprises the following steps: before coal mining, carrying out combined development on coal series gas and terrestrial heat in a coal series reservoir through a ground combined development well; in the coal mining process, coal seam gas is extracted through bottom drainage roadway gas extraction holes, circulating water pipes are arranged in an underground bottom drainage roadway or a coal face air return roadway and a transportation roadway, cold water is injected from the ground for cyclic heating while coal mining is conducted, and combined development of coal, gas and terrestrial heat is achieved; after coal mining, a goaf is filled and blocked to form a relatively closed mining influence body, coal gas and hot water in the mining influence body are extracted through the ground coal gas extraction hole and the geothermal energy extraction hole, and combined development of the coal gas and geothermal energy in the mining influence body is achieved. According to the application, transformation and upgrading of coal resource development from single energy acquisition to multi-energy collaborative, efficient and clean utilization are promoted.

The invention discloses an ocean platform low-temperature terrestrial heat organic Rankine cycle power generation system and device. A production reinjection system is used for outputting production water; the organic working medium circulating system can receive production water and comprises an evaporator, a turbine generator set, a condenser, a circulating pump and a preheater which are sequentially communicated through pipelines to form a closed loop; the natural gas output system comprises a return pipe which is coupled and communicated with the condenser; production water of the production reinjection system is in coupling communication with the working medium circulating system through an evaporator and a preheater, low-temperature terrestrial heat in the production water is recycled through an organic working medium, the organic working medium is vaporized after absorbing heat and enters the working medium circulating system in a gas state, and heat energy is converted into electric energy; a return pipe of the natural gas output system is in coupling communication with the working medium circulating system through a condenser, and the temperature of the organic working medium is reduced to be in a condensate state, so that the temperature lower than the temperature of production water is met, and low-temperature terrestrial heat is recycled.

The invention discloses a combined type air conditioning system based on shallow geothermal utilization and a working method thereof, and belongs to the technical field of air conditioners. A combined type air conditioning system based on shallow geothermal utilization comprises a user side floor heating system, a user side air conditioning unit, a ground source heat pump unit, an air source heat pump unit and a ground source circulating water pump for free cooling. The ground source heat pump unit, the air source heat pump unit and the ground source circulating water pump for free cooling are connected into a user side floor heating water supply and return pipeline and a user side air conditioner water supply and return pipeline through pipelines respectively, and the ground source heat pump unit, the air source heat pump unit and the ground source circulating water pump are arranged in parallel. A water supply pipeline and a water return pipeline of the ground source circulating water pump for free cooling are connected with the ground source side water supply pipeline, and an electric control valve is arranged between the water supply pipeline and the water return pipeline of the ground source circulating water pump for free cooling. The cold and heat supply energy efficiency can be improved, free cold supply in local time in summer is achieved, and the system has important significance on energy conservation and consumption reduction.

The application provides a water temperature monitoring and extraction simulation device based on coal mine geothermal energy, and belongs to the technical field of geothermal energy. The device comprises a tank body, an inner cavity is arranged in the tank body, three isolation plates are fixedly connected in the inner cavity, the inner cavity is divided into three cavities by the isolation plates, a placing box with an open top is arranged in each cavity, prefabricated samples are placed in the placing boxes, a plurality of temperature sensors are prearranged in the prefabricated samples, and a vibration assembly is arranged outside the tank body. The isolation plates, the multiple pressure applying assemblies and the elastic rods with different heights are cooperated, so that the multiple stress environments of the coal mines with different depths can be simulated at the same time, the actual stratum differences are better matched, the water penetration is actively controlled by the lifting assembly, the underground water dynamic infiltration process is accurately restored, the static water supplement is avoided to be disconnected with the actual situation, the sample crack water is uniformly distributed by the vibration assembly through vibration, the local water accumulation or vacancy is prevented, and the accuracy and reliability of the water temperature monitoring data are improved.

The application provides a heating method, a heating control device and a heating system which are preferential for middle-deep geothermal energy, and the heating method comprises the following steps: determining real-time heating load demand of a heat user; triggering a middle-deep downhole heat exchange system to provide heating for the heat user; triggering a PVT and the middle-deep downhole heat exchange system to provide heating for the heat user when the PVT meets a heating condition; starting a rock-soil energy storage and recycling system to cooperate with the middle-deep downhole heat exchange system and the PVT to provide heating for the heat user when the heating load demand of the heat user cannot be met by the heat energy provided by the middle-deep downhole heat exchange system and the PVT; and starting an air source heat pump system to cooperate with other heating heat source devices to realize matching between the heating heat energy and the heating load demand of the heat user when the heating load demand of the heat user cannot be met by the cooperation of the middle-deep downhole heat exchange system, the PVT and the rock-soil energy storage and recycling system. The energy utilization efficiency is improved by the scheme provided by the application, and efficient, stable and economic operation of the heating system is realized.

The invention belongs to the technical field of shallow geothermal energy heat exchange model verification, and provides a shallow geothermal energy heat exchange model construction verification and evaluation method and related equipment, and the method comprises the steps: obtaining soil temperature and soil moisture content data at corresponding time; wherein the soil temperature and the soil moisture content are arranged according to a time sequence; the soil temperature and the soil moisture content are pretreated, and the pretreated soil temperature and the pretreated soil moisture content are obtained; inputting the pretreated soil temperature and the pretreated soil moisture content into a pre-trained random forest regression model to obtain a dynamic soil heat conductivity coefficient and a dynamic soil specific heat capacity at corresponding time; calculating the corrected soil heat exchange amount based on the dynamic soil heat conductivity coefficient; the dynamic soil heat conductivity coefficient and specific heat capacity can be obtained by obtaining the soil temperature and water content data at the corresponding time, and the change of the soil thermophysical property parameters along with time can be captured in real time, so that the calculation of the corrected soil heat exchange amount is more suitable for the actual heat exchange process.

The application discloses a geothermal well and recharging well fracturing construction process, and determines the well position and well depth of the geothermal well according to engineering geology and hydrogeology conditions; drilling is conducted at the well position of the geothermal well, the construction of the geothermal well is conducted, and well cementation and well washing of the geothermal well are conducted; an initial value of the radius of the heat extraction influence range of the geothermal well during heat extraction is obtained; whether the initial value is smaller than a first threshold value is judged, if yes, fracturing holes are processed on the well wall of the heat extraction section in the geothermal well, and the heat extraction section is subjected to staged fracturing to form fracturing gaps; the well position and well depth of the recharging well are determined; drilling is conducted at the well position of the recharging well, the construction of the recharging well is conducted, and well cementation and well washing of the recharging well are conducted; fracturing holes are processed on the well wall of the recharging section in the recharging well, and the recharging section is subjected to staged fracturing to form fracturing gaps. The geothermal well and recharging well fracturing construction process of the embodiment of the application can improve geothermal energy flow and reduce disturbance to the stratum.

The present invention relates to a ground source heat pump unit utilizing geothermal energy in the technical field related to heat pump units. Through the setting of a joint protection unit, on the one hand, it can protect the joints of the heat exchange coil, preventing them from directly contacting the soil and reducing the possibility of leakage at the interfaces. On the other hand, in cooperation with the water seepage monitoring unit and the fixed-point monitoring unit arranged in the joint protection unit, it can clearly distinguish whether the water seepage of the heat exchange coil is from above or below. And in the case of water seepage at the connection of the lower pipe, the seepage water will first fall on the monitoring ring, triggering the pressure sensor therein, thereby realizing the positioning of the leakage point, so that targeted excavation and repair can be carried out. Compared with the large-area excavation and repair in the prior art, the repair difficulty is greatly reduced, while the repair efficiency is improved and the investment in maintenance costs is reduced.

The present application relates to the technical field of oil and gas exploitation, and particularly relates to a heat pump circulation viscosity reduction device based on center pipe closed heat exchange and a use method. The technical scheme is that a center pipe heat exchange unit is located in a production oil pipe, and a ground circulation unit is located at one side of a wellhead device; a hollow sucker rod column of the center pipe heat exchange unit is provided with an inner center pipe, a bottom of the inner center pipe is provided with a center pipe bottom head, and a pipe wall of an upper side is provided with more than one center pipe bottom side opening; the beneficial effects are that heat exchange working medium heated by a heat pump is lowered along the inner center pipe to the hollow sucker rod column in a wellbore, and then is raised to a near ground position along the center pipe bottom side opening between the inner center pipe and the hollow sucker rod column, closed heat exchange prevents blockage and circulation, energy consumption is greatly reduced by using the heat pump technology and the geothermal energy, safety is improved, the function of preventing blockage and increasing production is effectively realized, and the number of workover operations is reduced.

The present invention discloses a geothermal energy heat exchange system, including a hot and cold energy utilization unit, and also includes: a heat exchange pipe, which is arranged within the lining range on both sides of the middle box culvert of the equipment layer in the lower layer of the shield tunnel. The inlet end of the heat exchange pipe is connected to the water supply main pipe, and the outlet end is connected to the return water main pipe. By fully utilizing the characteristics of the separation of the shield tunnel driving lane layer and the equipment layer, a heat exchange pipe is pre-buried in the shield tunnel equipment layer, and circulates heat exchange with the heat pump system to provide cooling or heating to the user side, effectively replacing the traditional underground pipe ground source heat pump system of the buildings around the tunnel, which can save underground space and is conducive to the development and utilization of underground space.

This invention relates to the field of oil and gas extraction technology, and particularly to a heat pump circulation viscosity reduction device and its usage method based on a central tube closed-loop heat exchange. The technical solution is as follows: the central tube heat exchange unit is located inside the production tubing, and the surface circulation unit is located on one side of the wellhead device; an internal central tube is installed inside the hollow sucker rod string of the central tube heat exchange unit, with a central tube bottom end cap at the bottom and one or more central tube bottom side openings on the upper tube wall; its beneficial effects are: the heat exchange working fluid heated by the heat pump is pumped down the internal central tube to the hollow sucker rod string inside the wellbore by the surface circulation pump, and then enters the annulus between the internal central tube and the hollow sucker rod string through the central tube bottom side opening, rising to near the surface. This closed-loop heat exchange and anti-clogging circulation, through the use of heat pump technology and geothermal energy, significantly reduces energy consumption, improves safety, effectively achieves the function of anti-clogging and increased production, and also reduces the number of well workover operations.

The invention discloses a method for predicting geothermal energy exploitation performance in the geological hydrogen storage process of a salt water layer, belongs to the field of geothermal energy development and utilization, and aims to predict formation temperature evolution characteristics and production well heat production characteristics in the geological hydrogen storage process. The method is characterized in that a flow-heat transfer coupling model for describing the geological hydrogen storage process is established based on an energy conservation equation, a momentum conservation equation and a mass conservation equation; the method comprises the following steps: establishing a reservoir geologic model according to geological exploration data of the underground salt water layer, dividing grids for the geologic model, obtaining a plurality of grid units reflecting different spatial distribution positions of the underground salt water layer, and setting initial conditions and boundary conditions of the reservoir geologic model; and solving the stratum temperature in each grid unit in the reservoir geologic model and the heat flux density of the production well by adopting the constructed flow heat transfer coupling model, and realizing effective prediction of the stratum mining performance in the geological hydrogen storage process.

The invention discloses a terrestrial heat collection system, a terrestrial heat energy supply system and a control method of the energy supply system, and relates to the technical field of terrestrial heat collection, the terrestrial heat collection system comprises a heat pipe installed in a terrestrial heat well, and the heat pipe comprises an inner pipe and N liquid inlet pipes arranged on the periphery of the inner pipe, the opening direction of the first ends of the N liquid inlet pipes faces a well mouth of the geothermal well, the first ends of the N liquid inlet pipes are used for liquid feeding, the second ends of the N liquid inlet pipes communicate with N liquid outlets formed in the side wall of the inner pipe correspondingly, and the depths of at least two of the N liquid outlets are not equal. N is a positive integer greater than or equal to 2. The amount of liquid injected into each liquid inlet pipe is only one part of the amount of liquid injected into a single inlet, and fluid in the N liquid inlet pipes can be injected into the inner pipe at least at two different depths, so that the phenomenon of unstable flowing of a countercurrent structure caused by large liquid amount and large steam amount at the shallow depth can be effectively reduced.

This invention belongs to the field of geophysical exploration technology of geothermal resources and seismic activity. It provides a method, system, electronic device, and storage medium for analyzing the coexistence mechanism of geothermal and seismic activity. The method includes: three-dimensional joint inversion, computational domain gridding, attribute addition, boundary condition addition, reference temperature addition, simulation calculation, and correlation analysis. By performing three-dimensional joint inversion on electromagnetic and gravity data, this invention makes the model more consistent with the actual underground geological structure characteristics, freeing it from the idealized constraints of theoretical models and improving the accuracy of simulation results. Through attribute addition, boundary condition addition, reference temperature addition, simulation calculation, and correlation analysis, a complete theoretical system for the deep control and coexistence of seismic activity and geothermal resources is constructed, realizing the extraction of the intrinsic correlation between geothermal activity and earthquake occurrence.

The utility model provides a heat damage heat utilization mine cooling system combined cross-seasonal energy storage system. The heat damage heat utilization mine cooling system combined cross-seasonal energy storage system comprises a gas treatment module, a desorption regeneration module and a geothermal energy storage and supply module. According to the system disclosed by the invention, the air is treated through the combination of the direct evaporation type heat pump unit and the buried pipe, the rotating wheel dehumidification and sensible heat exchanger is arranged in the air treatment process, and sensible heat exchange is carried out between hot air exhausted by the mine and the air through the zero-energy-consumption solar heat collector and is used for regeneration of the rotating wheel dehumidifier; the energy consumption of a mine cooling system is saved, the underground dehumidification problem is solved, and the comfort of a mine working face is improved.

The application relates to the technical field of geothermal energy development and utilization, and discloses a middle-deep geothermal well inner heat exchange simulation device and an experimental method.The heat exchange simulation device comprises a simulated formation heat source module, a downhole coaxial heat exchange module, a ground liquid circulation module and a parameter monitoring module.The simulated formation heat source module uses a constant temperature heater to heat a space containing multiple simulated formation layers, thereby establishing a vertical temperature gradient.The downhole coaxial heat exchange module is arranged in the multiple simulated formation layers and comprises a coaxial flow channel formed by a geothermal well casing and a geothermal well inner tube.The ground liquid circulation module is connected with the downhole coaxial heat exchange module to form a closed loop.The parameter monitoring module obtains formation temperature and fluid operation data.The application provides a heat exchange simulation experimental method using the aforementioned device, and through the stages of environment initialization, circulation establishment, heat exchange monitoring and parameter evaluation, the heat exchange environment of a deep geothermal well is restored, and the influence of complex geology and group well interference on heat exchange capacity is objectively analyzed.

The present invention discloses a multi-tube heat storage type double-channel ventilation control system driven by solar energy, which relates to the field of building ventilation temperature control. The system includes an outer wall surface, a heat collection wall surface, a ceiling and a building inner wall. The ceiling is connected to the outer wall surface to form an integral outer frame, which is located outside the building whose temperature is to be controlled. The heat collection wall surface faces the outer wall surface, and there is an outer air duct between the two. There is an inner air duct between the heat collection wall surface and the building inner wall. The outer wall surface includes PC solar panels. The heat collection wall surface includes a plurality of heat storage columns arranged vertically and neatly. There is a heat storage column thermal insulation layer outside it, and a heat collection plate is arranged inside the heat storage array formed by the heat storage columns. The heat storage columns are installed on the fixing plates at the upper and lower positions. At each heat exchange place of the inner and outer air ducts, a plurality of ventilation openings are provided, and corresponding electromagnetic valves are equipped, and their opening and closing are controlled by an automatic control system. The present invention makes full use of solar energy and geothermal energy to achieve the goals of energy conservation, emission reduction and building low-carbonization while ensuring indoor thermal comfort.

The invention relates to the technical field of oil exploitation equipment, in particular to a deep well heat-preservation anti-corrosion wear-resistant compression-resistant composite pipe and a manufacturing process thereof, comprising a steel pipe body and a polymer composite pipe which are sequentially arranged from outside to inside; the macromolecule composite pipe comprises a macromolecule outer layer pipe and a macromolecule inner layer pipe which are sequentially arranged from outside to inside, and a composite heat preservation layer is further arranged between the macromolecule inner layer pipe and the macromolecule outer layer pipe. According to the deep well heat preservation, corrosion prevention, abrasion resistance and compression resistance composite pipe and the manufacturing technology, on the premise that an existing oil extraction lifting technology and an existing geothermal exploitation technology are not changed, the heat preservation composite pipe is used for increasing the temperature of a deep well shaft and improving the lifting working conditions of thick oil and the like, for a geothermal exploitation well, heat preservation of the deep well shaft is used for reducing loss of geothermal energy, and the cost is reduced. And the utilization efficiency of terrestrial heat is improved.

The application belongs to the technical field of tunnel ice melting, and particularly relates to a laying method of a tunnel portal pavement geothermal ice melting pipeline, which comprises a heat extraction unit, a heat supply unit and a control device; the heat extraction unit comprises a heat extraction pipe, a first pressure monitor and a first circulating water pump; the heat supply unit comprises a heat exchange unit, a heat collection water tank, a second circulating water pump, a second pressure monitor, a temperature monitor, a total water inlet pipe, a total water outlet pipe and a road heat exchange pipe; the road heat exchange pipe is installed in a cement concrete surface layer of a cement concrete asphalt road; the cement concrete asphalt road comprises, from bottom to top, a road soil base layer, a road cushion layer, a cement concrete base layer, a heat insulation layer, a cement concrete surface layer, an asphalt lower surface layer and an asphalt upper surface layer. The application realizes the purpose of ice and snow melting by extracting geothermal energy and transmitting it to the ice and snow layer on the road surface; and the whole tunnel portal pavement geothermal ice melting pipeline is controlled according to pressure change and temperature change.

1. The name of the product under this design: Waste Heat Recycling Equipment (ORC). 2. Purpose of the product of this design: to recover waste heat and geothermal energy from industrial production processes and convert low-grade thermal energy into electrical energy. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present invention relates to the technical field of flexibility retrofitting for combined heat and power (CHP) units, and specifically relates to a multi-stage peak shaving system coupling deep geothermal energy storage with CHP. On the basis of long-term geothermal energy storage by aquifer thermal energy storage (ATES) units and hot well / cold well (HW / CW) pairs, combined with electric heat pump (EHP) units, the waste heat recovery of CHP units is realized, thereby improving the wind-solar power accommodation capacity of a power grid and the CHP peak shaving response speed; and integrating the EHP units with two-stage plate heat exchangers (HX1 / HX2) for coordinated heat storage and supply operation achieves three-stage deep peak shaving for CHP, thereby improving the CHP power generation peak shaving depth and expanding the CHP heat supply range. Overall, the wind-solar curtailment rate and the system operation cost are reduced, thereby achieving the applicability to large-scale high-penetration wind-solar power accommodation and deep peak shaving operation scenarios of CHP units.

The present invention discloses a heating type prefabricated pile based on the heat pipe effect and a construction method, comprising a pile body and a heat pipe, wherein the outer side of the heat pipe is wrapped with a first heat conducting sheet, a temperature sensor is preset in the first heat conducting sheet, a plurality of second heat conducting sheets are spaced apart on the top of the heat pipe, a resistor is installed on the second heat conducting sheet, a valve is also installed on the top of the heat pipe, a blower is covered on the outer side of the second heat conducting sheet and the valve, and the blower, the resistor and the temperature sensor are connected to a control end; the pile body is arranged on the outer side of the heat pipe. The present invention mainly utilizes the heat pipe effect to utilize geothermal energy. First, a certain amount of water is injected into the heat pipe, and then a vacuum pump is used to reduce the air pressure in the heat pipe. When the air pressure is reduced to a certain value, the water will begin to boil under the action of geothermal energy, and the water vapor will move upward to the top of the heat pipe. After the copper sheet absorbs the water vapor in the heat pipe, the heat is taken out by the blower. The water vapor loses heat and condenses into water, thereby realizing the utilization of geothermal energy in a reciprocating cycle.

The present invention discloses a method for extracting geothermal energy by arranging pipelines with solid waste cemented functional filling bodies. In the process of continuous mining and filling, the geothermal extraction pipelines are laid while the paste is filled in the branch tunnels of the goaf. Then, the geothermal extraction pipelines in multiple parallel branch tunnels are connected with the heat extraction branch pipes laid in the return air chute and the transport chute. The geothermal extraction pipelines in all branch tunnels are then connected to the heat extraction main pipes laid in the return air chute and the transport chute, forming an underground heat extraction system. The present invention adopts continuous segmented filling and laying. The filling main pipeline, the terminal filling pipeline and the geothermal extraction pipeline used are all segmented. When performing segmented grouting filling, it can not hinder the operation of the next section of the pipeline, the isolation retaining wall and the card slot, which can greatly improve the operation efficiency. At the same time, the present invention uses the solid waste in the mine as a filling body, which can effectively utilize the waste and save filling costs.