81 results about "Heating season" patented technology

The utility model relates to the technical field of energy conservation and environmental protection, in particular to a solar cross-quarter energy storage and soil source heat pump coupling heating system. The system comprises a solar photo-thermal photovoltaic integrated subsystem, a soil source heat pump coupling heat storage system and a heat user terminal system, the solar photo-thermal photovoltaic integrated subsystem comprises a photo-thermal photovoltaic integrated assembly, a heat exchanger, a storage battery and a circulating pump, and the solar photo-thermal photovoltaic integrated subsystem is used for supplying power to electric equipment of the system and collecting heat; the soil source heat pump coupling heat storage system comprises a soil source heat pump unit, a plate heat exchanger and soil serving as a heat storage medium. And a terminal user maintains proper indoor temperature and required hot water through the heat exchanger. Solar energy and geothermal energy are combined, abundant solar energy is converted into heat energy to be stored in soil in the non-heating season, then the heat energy is taken out through the ground source heat pump for heating in the heating season, renewable energy sources are fully utilized, and the current situation that cold and heat loads are uneven due to long-term operation of the soil is effectively prevented; finally, the purposes of high efficiency, energy conservation and emission reduction are achieved.

This invention discloses a PVT (Polyvoltine Transformer) soil source heat pump centralized heating system, relating to the field of integrated utilization of solar photovoltaic and solar thermal energy. It includes PVT modules and a photovoltaic inverter for converting the direct current (DC) generated by the PVT modules into alternating current (AC) for use by electrical equipment within the system or for grid connection. In this PVT soil source heat pump centralized heating system, the temperature of the solar panels in the PVT modules decreases during operation, improving their power generation efficiency. During the winter heating season, the soil source water temperature can be increased during certain periods, reducing the operating costs of the soil source heat pump unit. In the non-heating season, supplemental heating is provided to the soil side to achieve a thermal balance, thereby enabling the soil source heat pump unit to maintain high-efficiency operation during the heating season. This solves the problems existing in traditional soil source heat pump centralized heating systems and has advantages such as high efficiency, energy saving, and sustainability.

The invention discloses a solar light-heat / cold conversion and cross-season energy storage system suitable for abandoned mine transformation. The system comprises a water supply module, an energy supply module, an energy conversion module, a quality inspection and strengthening module, an energy storage module and a control module. The water supply module provides initial and supplementary water; the energy supply module collects energy for conversion and supplies energy to each module; the transduction module utilizes the energy processing multi-module to convey water and sends outlet temperature data to the control module. The quality inspection and enhancement module sends water temperature data and receives an instruction to execute operation; the energy storage module is used for storing water, collecting water temperature data at regular time and receiving post-processing instruction operation; the control module analyzes the temperature data of the transduction module and sends an instruction to the control system. The system solves the problems of mine treatment and facility idling in non-heating seasons, has cross-seasonal heat and cold storage capacity, realizes seasonal-scale energy supply and demand mismatch adjustment, energy space-time translation and all-season efficient utilization, and improves the system utilization rate and the rate of return on investment.

The present application relates to a kind of bypass adaptive configuration carbon dioxide heat pump heating system and control method, wherein the bypass adaptive configuration carbon dioxide heat pump heating system of multiple includes carbon dioxide sub-cycle, refrigerant sub-cycle and water supply flow path connected with each other heat exchange;Carbon dioxide sub-cycle includes main carbon dioxide loop and regenerator bypass;Main carbon dioxide loop includes sequentially connected carbon dioxide compressor, carbon dioxide-water heat exchanger I, carbon dioxide-water heat exchanger II, carbon dioxide-refrigerant heat exchanger, carbon dioxide throttling valve I, carbon dioxide evaporator;Water supply flow path is connected with the main carbon dioxide loop by carbon dioxide-water heat exchanger I and carbon dioxide-water heat exchanger II heat exchange connection.Compared with prior art, while realizing the efficient operation of system full heating season, the present application can adaptively match different end conditions, while having more efficient and stable defrosting effect and more reliable compressor safety guarantee.

A solar energy auxiliary combined heat and power system and operation method, the system comprises a boiler, a high, medium and low pressure cylinder of a steam turbine, a condenser, a heat recovery system connected in sequence; further comprising a trough type solar heat collection system, a high and low temperature heat storage tank, an oil-water heat exchanger, a peak heater, a waste heat heater, an auxiliary heater, an absorption heat pump and various valves. During the daytime power peak and heat valley period, the solar energy drives the absorption heat pump and the peak heater, recovers the steam turbine exhaust and the waste heat of the heat network return water, under the premise of meeting the heat supply load, auxiliary improves the steam turbine power output; the excess solar heat is stored through the high temperature tank. During the night power valley and heat peak period, the high temperature tank releases heat to drive the absorption heat pump and the peak heater to recover the steam turbine exhaust and the waste heat of the heat network return water, which is used for heat supply of the heat network. The present application realizes the pure condensing condition operation of the combined heat and power unit in the heating season, and greatly improves the power output of the unit in the power peak period, and the peak regulation capacity is obviously improved.

The invention provides a sustainable heat supply and defrosting method and system for coupling a PV / T heat pump with an air source heat pump, belongs to the technical field of heat supply systems, and can solve the problems that an existing air source heat pump is unavoidable in frosting, and the air source heat pump needs to stop indoor heat supply and even absorb part of indoor heat to reduce the indoor heat supply temperature under the defrosting working condition. The method comprises the steps that an illumination condition and an environment temperature condition are judged, a corresponding heating and defrosting mode is selected based on the illumination condition and the environment temperature condition, and the heating and defrosting mode comprises an air source compensation type PV / T heat pump synchronous heating and defrosting mode and a PV / T compensation type air source heat pump synchronous heating and defrosting mode. According to the sustainable heat supply and defrosting method coupled with the PV / T heat pump and the air source heat pump, sustainable heat supply in the defrosting process of the air source heat pump is achieved, the wide-temperature-zone operation range of the air source heat pump and the PV / T heat pump is widened, a heat pump unit can operate efficiently, and the heating season energy efficiency coefficient of the unit is increased.

The invention relates to the technical field of heat supply systems, and provides a centralized heat supply system and a control method thereof.The centralized heat supply system comprises a centralized heat supply module and an energy module, and the energy module comprises an air heat exchange unit, a heat storage unit, a heat pump unit, a water dividing and collecting unit, a control valve set, a green power unit and a power distribution unit; the water dividing and collecting unit is connected with the air heat exchange unit, the heat storage unit and the heat pump unit and controls connection and disconnection between any two of the air heat exchange unit, the heat storage unit and the heat pump unit, the control valve set is connected with the heat pump unit, the heat storage unit and a primary network of the centralized heating module and controls connection and disconnection between any two of the heat pump unit, the heat storage unit and the centralized heating module, and a wire of the power distribution unit is connected with the green power unit and a municipal power grid. The power distribution unit supplies power to electric components of the energy module. Therefore, the central heating system can operate in the heating mode to supplement heat to the primary network and meet the heat utilization requirement of the secondary network, and can operate the heat storage mode by using the electric power generated by the green power unit in the non-heating season to realize cross-season heat storage so as to efficiently absorb renewable electric power.

The utility model relates to a solar heat storage coupling split heat pipe and a mine air inlet heating system, and belongs to the technical field of solar heat storage mine heat supply. The solar heat storage coupling split heat pipe is a heat storage type heat exchanger, can be buried in soil, is used in cooperation with a solar heat collector, and stores absorbed solar radiation energy in surrounding soil in a dividing wall heat exchange mode under the working condition of a non-heating season, so that a heat source guarantee is provided for subsequent heat supply. The mine air inlet heating system can be matched with the solar heat storage coupling split heat pipe, energy waste caused by high-temperature air supply is greatly reduced while reasonable allocation of heat energy is achieved, and the overall heat efficiency of the system is remarkably improved; the problems that according to an existing mine heat supply system, it is difficult to meet the mine air inlet heat supply working conditions that the distance between an air inlet shaft and an industrial square is long, a mine area lacks recyclable heat energy as a heat source support, the power distribution capacity is insufficient, and a coal heat supply mode is not suitable are solved.

The application provides a ground source heat pump system and a control method thereof. Annual historical operation data of the ground source heat pump system are acquired, and the annual historical operation data include cooling season parameters and heating season parameters. A first predicted heat and a predicted heat discharge are calculated according to the cooling season parameters, wherein the sum of the first predicted heat and the predicted heat discharge is equal to a preset heat value. A second predicted heat is calculated according to the heating season parameters. The predicted heat discharge is adjusted so as to make the first predicted heat consistent with the second predicted heat. The technical scheme of the application collects the annual historical operation data of the ground source heat pump system, and combines meteorological characteristics to predict soil heat release and soil heat absorption. The first predicted heat and the second predicted heat of the prediction result are compared to realize accurate control of soil heat balance. When the prediction is inconsistent, the prediction result is adjusted and intervened in time to realize full use of soil constant temperature characteristics of a heat exchange region and improve operation efficiency of the ground source heat pump system.

The application provides a heat pump air conditioning system and a defrosting control method thereof. The heat pump air conditioning system comprises a compressor assembly, a first heat exchanger, a second heat exchanger, a pump component, an indoor unit, a heat storage water tank and a branch pipeline. A throttling pipeline is connected between the first heat exchanger and a first medium channel. The heat storage water tank is arranged at a pipeline evaporation section of the throttling pipeline and located at an upstream side of a throttling component. The first medium channel is respectively connected with a first medium inlet pipe and a first medium outlet pipe at two ends. An upstream end of the throttling pipeline is connected with a downstream end of the first medium outlet pipe, and a downstream end of the throttling pipeline is connected with the first heat exchanger. The branch pipeline is respectively connected with the upstream end of the throttling pipeline and the first medium inlet pipe at two ends. In a heating mode, the branch pipeline is cut off, and the first medium inlet pipe and the first medium outlet pipe are both conducted. In a defrosting mode, the branch pipeline is conducted, and the first medium inlet pipe and the first medium outlet pipe are both cut off. The air conditioning system solves the problem of large indoor temperature fluctuation during defrosting in the heating season.

The application discloses a kind of table area electric heating load identification method and system, belong to power grid data analysis and intelligent identification technical field.The method includes: obtaining the historical load of to-be-identified table area, time and multi-dimensional time series data such as meteorology by data acquisition module;Utilize a deep learning model comprising time series feature extraction module and key feature weighting module to process data to generate preliminary classification results;Based on the business rules of the growth of heating season electricity consumption and the stability of non-heating season electricity consumption, the historical load is compared and verified across years;The preliminary classification result of model is combined with the verification result of rule, and whether table area is electric heating load is comprehensively judged.This application combines the pattern recognition ability of deep learning with the deterministic logic of business rules, realizes the high-precision, high-robustness automatic identification of electric heating load, and provides an effective technical means for power grid intelligent management.

The invention provides a heat supply period extraction condensing unit high back pressure optimization control system and method, and the system comprises an agent modeling implementation module which is used for building a multi-agent model of a boiler, a steam turbine, a condenser and a heat supply network, achieves the real-time data exchange through a dynamic coupling interface, and is used for carrying out the real-time data exchange through a partitioning strong coupling method, the inter-field flux transfer accuracy is ensured; the three-stage closed-loop parameter calibration module is used for establishing a complete parameter calibration assembly line; the physical information deep learning module is used for combining a neural differential equation with physical constraints to determine a mechanism enhanced model; the third-level toughness control module is used for performing safety protection control according to the working state of the extraction condensing unit; and the full-link intelligent collaborative optimization module is used for extracting multi-source data related to the condensing unit and performing collaborative control on each module of the condensing unit. At least five innovative modules can be systematically integrated, so that intelligent optimization control of the back pressure of the extraction condensing unit is realized.

The invention relates to an intelligent decomposition and optimization method for an annual power generation plan of a power plant, belongs to the technical field of power plan scheduling, and solves the problems of low granularity and low evaluation dimension of an existing power plan scheduling model. The method comprises the following steps: dividing a target year into a plurality of basic optimization time periods based on the operation mode difference between a heat supply season and a non-heat supply season; taking the minimum annual total gas consumption predicted by the generalized additive model as an optimization target, and coupling a smooth penalty term to construct a basic optimization target function; generating a feasible operation interval of each basic optimization period; generating a plurality of feasible initial solutions in the feasible operation interval, performing iterative solution on each feasible initial solution by adopting a constraint optimization algorithm to obtain an optimal solution, and selecting a solution with the lowest basic optimization objective function value from all the optimal solutions as a final optimal solution; integer correction is carried out on the power generation amount and the heat supply amount in the final optimal solution, and a prediction interval of the gas consumption amount is generated based on the corrected power generation amount and heat supply amount.

This invention discloses a power plant energy storage and peak-shaving device based on a hygroscopic solution, belonging to the technical field of power energy-saving equipment. The device includes a circulating liquid storage tank for storing the hygroscopic solution, connected to a heating water heat exchanger to continuously heat the heating water main pipe; and an electric boiler connected to the circulating liquid storage tank, which heats the heating water main pipe via a condenser. By setting different modes, the absorption unit, electric boiler concentration unit, and compressor concentration unit can be activated under different conditions. During the heating season, when it is necessary to increase the power output to the outside of the plant, only the absorption unit needs to be activated; during the heating season, when it is necessary to significantly reduce the power output to the outside of the plant, the absorption unit, electric boiler concentration unit, and compressor concentration unit all need to be activated simultaneously. By activating different devices at different times, the utilization rate of the device is maximized while minimizing energy consumption.

The application discloses a flue gas waste heat-water recovery and pollutant emission reduction system and a regulation and control method, and belongs to the technical field of industrial waste heat recovery and automatic control. The system comprises a desulfurization tower, a slurry circulating subsystem, a flash tank, a heat pump unit and an intelligent regulation and control system. The method acquires historical operation data and pre-processes the same, constructs a double-layer coupled network prediction model of a Transformer-GRU, and outputs a water supply temperature prediction value. With temperature tracking precision and control amount change amplitude as targets, a control variable and a temperature safety constraint are introduced, and a spiral envelope element heuristic algorithm is used to solve the optimal driving steam regulating valve opening degree and slurry circulating pump rotating speed combination. The system can remove more than 40% of condensable particulate matters, and the SO3 removal efficiency is more than 92%. In the heating season, the waste heat recovery power is 36 MW, and 100,000 tons of condensate water is recovered. The method has high prediction precision and strong stability, and effectively overcomes the influence of the volume inertia of the flash tank and the multi-stage heat exchange lag of the heat pump.

The present invention discloses a method for planning the expansion of a distribution network containing hydrogen-heat storage in a high-proportion photovoltaic scenario. In order to effectively characterize the uncertainty of photovoltaic power generation and multi-load energy consumption, a two-layer coupled meteorological clustering model based on the division of heating seasons was established, and an irradiation-load-temperature multi-grid joint scenario generation model was constructed based on each meteorological cluster. In order to solve the problem of insufficient accuracy of traditional photovoltaic output models in high-proportion photovoltaic power generation scenarios and insufficient power demand in high PV output scenarios, which leads to difficulty in accommodating photovoltaic output, a refined distributed photovoltaic system physical model chain was constructed. Considering that the multi-energy coupling of distributed hydrogen-heat storage improves energy utilization efficiency, and balances the contradictions among the economic efficiency of the system's typical scenario operation, the power supply reliability of low-probability high-load scenarios, and the photovoltaic absorption of high PV output scenarios, the distribution network expansion planning results can well solve the economic, reliability and environmental protection problems brought about by high-proportion photovoltaic scenarios on the planning and operation of distribution networks.

The utility model discloses a solar-assisted double-storage-tank cross-season heating device which comprises a high-temperature heat storage tank which is connected with a solar heat collection field through a pipeline, a low-temperature heat storage tank is connected with an air heat exchanger through a pipeline, the high-temperature heat storage tank and the low-temperature heat storage tank are connected through a pipeline, and the high-temperature heat storage tank and the low-temperature heat storage tank are connected with a buried pipe heat exchanger through a pipeline after being converged. A high-temperature area of the water source heat pump unit is connected with a high-temperature heat storage tank pipeline, and a low-temperature area is connected with a low-temperature heat storage tank pipeline; water in the storage tank is used, influences on underground water resources are avoided, environment temperature is used for heat storage, the number of solar heat collectors is reduced, cost is reduced, a high-quality heat source extracted into the storage tank from soil is used for being lifted by the heat pump unit to become a high-temperature heat source to supply heat, the efficiency of a water source heat pump is improved, and power consumption is reduced. In the non-heating season, heat is stored from soil, heat balance of the soil is maintained, solar energy is stored in the non-heating season, solar energy is directly used for heating in the heating season, and the solar energy is utilized all year round.

The application discloses a combined heat and power system integrated with compressed air energy storage and an operation method thereof. The system comprises a boiler, high, medium and low pressure cylinders of a steam turbine, a condenser, a heat recovery system connected in sequence; and further comprises a steam ejector, a compressor set, a cooler set, an expander set, a heater set, an air storage chamber, a motor, a generator and various valves. In the energy storage stage in the heating season, the compressor set consumes electric energy and stores high-pressure air in the air storage chamber, and the multi-stage compression heat is used for assisting the heat supply of a heat network. In the energy release stage in the heating season, the air storage chamber releases high-pressure air and drives the generator to generate power in the expander set, and the water of the heat network is used as a multi-stage heating heat source required in the expansion process. Meanwhile, the backwater of the heat network is heated in stages, and the backwater is sequentially heated by using the extraction steam of the steam turbine to inject the exhaust steam of the low pressure cylinder of the steam turbine and the extraction steam of the third stage of the steam turbine as heat sources. The application realizes the efficient integration of the compressed air energy storage and the heat and power unit, and the energy efficiency level and the peak regulation capacity of the system are obviously improved.

The invention relates to the technical field of building energy optimization control, in particular to a perception type CNN-LSTM hybrid prediction control method and system based on Bayesian optimization, and the method comprises the steps: building an ASHP-PCM coupling system high-fidelity simulation model based on TRNSYS; preprocessing to obtain a standardized input sequence; a CNN-LSTM hybrid prediction model is constructed; the hyper-parameters are optimized in a self-adaptive mode through Bayesian optimization; introducing an electricity price weighted loss function training model; and formulating an ASHP-PCM system optimization control strategy of valley electricity heat storage and peak electricity heat release by combining a heat load prediction value output by the model with time-of-use electricity price. According to the method, Bayesian optimization and electricity price weighting CNN-LSTM are taken as the core, ASHP-PCM system characteristics are accurately captured, energy consumption of the coupled heating system in the heating season is effectively reduced, peak load shifting is achieved, prediction precision and economical efficiency are improved, and remarkable benefits are achieved.

The application discloses a power grid-thermal power plant-heat network collaborative scheduling method and system for power supply guarantee demand, first carries out day-ahead load prediction, and statistics power station power prediction situation and available capacity and time length of various types of regulation power generation resources and energy storage resources in the region belonging to the power grid, determines the top peak time period and required top peak capacity of the next day, in the intra-day stage, according to whether the current power grid needs the top peak requirement, carries out the regulation and control of the running generator unit, standby unit, pumped storage unit and new energy storage, combines the collaborative heat network emergency top peak mechanism, until the top peak requirement is reached. The application solves the problem of difficulty in power supply guarantee caused by the decline of the peak capacity of a large number of thermal power plants in the heating season due to the bearing of people's livelihood heating, and has significant social and economic benefits.

The invention relates to the field of building energy conservation and environmental protection, in particular to a building heat supply energy consumption detection system and an energy conservation grade evaluation method. The system is composed of a building heat meter or a household heat meter, a room temperature controller, an outdoor air temperature collector, an electric valve and a computing center, and data are collected and transmitted through NB wireless remote communication. Based on a unique temperature difference heat index calculation method, a building energy consumption heat index, a temperature difference load rate and converted design temperature difference heat consumption are calculated by integrating various factors, and then the energy-saving grade is determined by comparing with local non-energy-saving building design parameters. According to the invention, energy consumption can be dynamically monitored in the heating season, and instance verification is provided for building energy-saving design; help is provided for energy-saving operation of hot enterprises; and an accurate and effective scientific basis is provided for national evaluation of the building energy-saving grade.

The invention discloses a source-load-storage coupled deep geothermal long-time energy storage system and a control method, and belongs to the technical field of geothermal energy storage, the system is composed of a deep heat storage unit, a combined heat and power generation unit, a heat supply plate exchanger, a heat storage plate exchanger, a power grid, a heat supply network and a valve group, and flexible linkage of all the units is achieved through the valve group. According to the control method, on the basis of the source load storage dynamic coordination and ground and underground coupling principle, the real-time electric heating load of the building serves as the requirement standard, a variable-working-condition operation strategy is formulated in the heating season and the non-heating season, and alternate operation of heat storage in the daytime and heat removal at night in the heating season is achieved; and in the non-heating season, the combined heat and power generation unit is controlled to perform pure condensation power generation and deep heat storage closed well operation. The system energy storage efficiency can be improved, the thermal plume diffusion and thermal breakthrough risks are reduced, meanwhile, the system operation cost is reduced, and the initial payback period is shortened.

The invention discloses a novel severe cold area industrial heat source supply mode which comprises a water inlet pipeline and a water outlet pipeline, a steam heat exchanger and a water source heat pump unit are installed between the water inlet pipeline and the water outlet pipeline, and the water inlet pipeline comprises an air conditioning unit water return pipeline, a reservoir area heating water return pipeline and a workshop heating water return pipeline. The water outlet pipeline is divided into a cold water section water outlet pipeline and a hot water section water outlet pipeline; according to different seasons and outdoor air temperatures, the heat source requirements of an industrial air conditioning unit and a heat supply system are met by using all the heat source devices in a combined mode. In a non-heating season, the water source heat pump unit and the outdoor air-cooled heat pump are mainly used for heat source supply, and meanwhile the heat dissipation problem of indoor equipment is solved; in the beginning and ending periods of the heating season, the heat source supply mode is flexibly adjusted according to the production state, the absorption capacity of the water source heat pump is fully utilized, and an outdoor air-cooled heat pump or a steam heat exchanger is used for assistance; in the severe cold period, the water source heat pump unit serves as the core, the steam heat exchanger is assisted, and stable heat source supply is guaranteed.

The application discloses an electric heating user identification and heating electricity consumption feature analysis method and device. The electric heating user identification and heating electricity consumption feature analysis method comprises the following steps: acquiring user electricity consumption history data in a region to be identified; dividing the user electricity consumption history data in the region to be identified into historical user detailed electricity consumption data and historical regional overall electricity consumption data; acquiring overall electricity consumption and air temperature change relationship information during a heating season, the number of electric heating users and the proportion of the electric heating users in overall users, and the average use rate of electric heating in the region to be identified according to the historical user detailed electricity consumption data and the historical regional overall electricity consumption data. Through the method, the overall electricity consumption and air temperature change relationship information during the heating season, the number of electric heating users and the proportion of the electric heating users in overall users, and the average use rate of electric heating in the region to be identified can be identified, and the information can be displayed on an interface, so that the electricity consumption features of the electric heating users can be intuitively understood.

The application discloses a heat and electricity collaborative system integrated with compressed air energy storage and an operation method thereof. The system comprises an extraction condensing unit, a steam ejector, a compressor unit, a compressed cooler unit, an expansion unit, an expansion heater unit, an air storage chamber, an electric motor, a generator, a high back pressure unit, a heating condenser and various pipelines and valves. In the energy storage stage in the heating season, the compressor unit consumes electric energy and stores high-pressure air in the air storage chamber, and the multi-stage compression heat is used for assisting the heat supply of a heat supply network. In the energy release stage in the heating season, the air storage chamber releases the high-pressure air and drives the generator to generate electricity in the expansion unit, and the water of the heat supply network is used as a multi-stage heating heat source required in the expansion process. Meanwhile, the return water of the heat supply network is heated in stages, and the high back pressure unit steam turbine part exhaust steam, the extraction condensing unit steam turbine extraction steam and the steam turbine exhaust steam are used as heat sources in sequence. The application realizes the efficient integration of the compressed air energy storage and the heat and electricity unit, and the energy efficiency level and the peak regulation capacity of the system are obviously improved.

The invention provides an efficient combined heat and power generation heat supply system adopting low-pressure steam cascade heating. The system comprises an intermediate-pressure cylinder, a low-pressure cylinder section 1, a low-pressure cylinder section 2, a first pipeline, a second pipeline, a condenser, an absorption heat pump and a heat exchanger. In the heating and heat supply stage, part of exhaust steam of the low-pressure cylinder section 1 enters the low-pressure cylinder section 2, so that heat supply network water is sequentially heated by the condenser, the absorption heat pump and the heat exchanger; in the deep peak regulation stage, steam admission of the second section of the low-pressure cylinder is reduced to the lowest steam flow for maintaining safe cooling, so that heat supply network water is sequentially heated by the absorption heat pump and the heat exchanger; and in the rotor replacement stage, steam admission of the second section of the low-pressure cylinder is stopped, so that heat supply network water is sequentially heated by the absorption heat pump and the heat exchanger. The system can solve the problems that in the prior art, combined heat and power generation efficiency and flexibility are difficult to consider, low-temperature waste heat utilization is insufficient, and system modification economy is poor.

The invention relates to the technical field of radiators, in particular to a copper-aluminum composite radiator with double-spiral water channel diversion, which comprises a bottom plate and a plurality of aluminum radiating ring sleeves arranged at the top end of the bottom plate, a supporting plate is mounted on one side of the top end of the bottom plate, two fans are embedded in the wall of the supporting plate, and a limiting vertical plate is mounted on the other side of the top end of the bottom plate. The upper end and the lower end of one edge aluminum heat dissipation ring sleeve are fixedly connected with limiting plates, the limiting plates are slidably clamped to the side wall of the aluminum heat dissipation ring sleeve on the edge of the other end, through holes are formed in the middles of the limiting plates in a penetrating mode, the attaching faces of the multiple aluminum heat dissipation ring sleeves are fixedly connected with sealing gaskets, and limiting grooves are formed in the inner ends of the plate walls of the limiting vertical plates. According to the heat dissipation device, flexible unfolding and combined storage of the aluminum heat dissipation ring sleeve are achieved, space occupation can be reduced in the non-heating season, dust accumulation is prevented, and the problems that dust accumulation is prone to occurring and the space is occupied when a traditional heat dissipation device is not used are solved.

The application discloses a coaxial casing type water body heat storage system and method based on a shaft of a closed mine, and the shaft of the closed mine is sealed by a sealing section, a coaxial casing with a deep inner part and a shallow outer part is arranged at the center of a top sealing well lid, a cement ring is formed between an outer pipe and a shaft wall annulus, and a casing hanger is used to share the weight of the casing, a one-way valve and a perforated screen pipe are arranged at a specific depth of the inner pipe, and a bidirectional heat storage adaptive assembly is formed. The method uses natural rebounding underground water as a medium, switches a high-temperature heat source storage mode and a low-temperature heat source storage mode according to the relationship between the temperature of the heat source and the original ground temperature at the top surface of the sealing section, in a non-heating season, water is pumped through the outer pipe, heated and then recharged for heat storage, in a heating season, reverse circulation is used for heat release and heating, and the low-temperature mode can also be used to synchronously provide a summer cooling load. The application is adapted to the large-diameter and large-depth characteristics of the shaft, realizes large-scale cross-season heat storage, fully utilizes the remaining resources of the closed mine, reduces the heat storage cost, is adapted to multiple heat sources, relieves the time and space intermittence of renewable energy, and promotes the green and low-carbon transformation of the closed mine.

The application discloses a kind of heating season city gas system load prediction method and system, it is related to gas system load prediction technical field, including the following steps: collection heating season city gas system relevant raw data, wherein raw data includes historical data and real-time data, and the raw data collected is preprocessed, obtain gas load analysis set and gas load analysis demand variable.The application constructs gas load prediction model by comprehensively analyzing gas usage, meteorological data, population statistics data and gas price data, significantly improves the accuracy of gas load prediction, and by analyzing historical extreme weather events, calculating extreme weather influence index, assessing possible risks, then combining gas load assessment index and risk warning coefficient, quantifying risk level, adjusting warning level dynamically according to real-time data, timely taking preventive measures, reducing the influence of extreme weather events on gas supply.

The utility model relates to the technical field of solar heat utilization, in particular to a hot water heat storage tank of a photo-thermal hot water absorption heat pump. The system comprises a solar water heater and a first-stage hot water heat storage tank installed on the solar water heater, the first-stage hot water heat storage tank is connected with an absorption heat pump through a hot water pipeline of the first-stage hot water heat storage tank, and the system further comprises at least one independently-arranged second-stage hot water heat storage tank. And the second-stage hot water heat storage tank is connected with the absorption heat pump through a hot water pipeline of the second-stage hot water heat storage tank and a hot water pipeline of the first-stage hot water heat storage tank. According to the hot water heat storage tank system of the photo-thermal hot water absorption heat pump, at least two hot water supply pipelines are adopted, the operation mode of the system is freely switched under the condition that the absorption heat pump works or is idle, the annual utilization rate of a solar water heater can be remarkably improved, the application range of the solar water heater is expanded, and the energy consumption is reduced. Heating in winter and refrigerating in non-heating seasons.