35results about How to "Guaranteed heating demand" patented technology

The invention relates a mixed water heat supply system, in particular to an intelligent energy-saving mixed water heat supply method. In the invention, developed from a system adopting the conventional valve throttling distribution, a corresponding intelligent energy-saving mixed water heat supply system consists of a mixed water station intelligent balance monitoring subsystem, a computer centralized monitoring center, a video monitoring subsystem and a secondary network intelligent balance and energy-conservation monitoring subsystem; and the operation optimization and energy conservation of the entire mixed water heat supply system are realized by the excellent cooperation of the four subsystems.

The invention discloses a heating-power system joint economic scheduling method by using heating network energy storage features. Influences of heating network energy storage on a thermoelectric unitare analyzed; constraints when the heating network keeps safe and stable operation after the thermoelectric unit changes a heating supply extraction flow are determined; according to specific reasonsfor wind curtailment generation by a power system containing a high proportion of thermoelectric units, a heating-power system two-stage scheduling policy considering the heating network energy storage is made; the system safety risk cost caused by wind power uncertainty is calculated; and a heating-power system joint economic scheduling model in consideration of heating network heat storage and wind power uncertainty cost and with the minimum wind curtailment amount as a target is built; and a fast particle swarm optimization algorithm is adopted to solve the model. The method of the invention can improve the peaking capability of the thermoelectric unit, the two-stage thermoelectric unit scheduling policy is adopted according to the specific wind curtailment reasons of the system in theheating supply stage, and system wind curtailment is thus reduced; and during the thermoelectric unit scheduling process, the wind power uncertainty is quantified as the risk cost and is added to a scheduling objective function, and the system operation cost and the risk can be coordinated.

The invention provides a heat pump air-conditioning system and a control method. The heat pump air-conditioning system comprises a compressor (1), an inner unit heat exchanger (2), an outer unit heatexchanger (3), a throttling gear (4), a refrigerant circulation loop for connecting the compressor (1), the inner unit heat exchanger (2), the outer unit heat exchanger (3) and the throttling gear (4)in series and a heat storage module (5) arranged in the refrigerant circulation loop, the heat storage module (5) is used for heating heat from a refrigerant in the refrigerant circulation loop and storing the heat when needed, and the refrigerant in the refrigerant circulation loop is heated by the heat storage module (5) when defrosting of the outer unit heat exchanger is needed. By means of the heat pump air-conditioning system and the control method, when the indoor heat load is low, redundant heat of the system can be stored to be used for defrosting, the heat is released through the heat storage module for defrosting in the defrosting process, indoor heating can be continuously carried out, the room temperature can be kept unchanged, and the room comfort is improved.

The invention relates to a hot air circulation structure of a low-temperature wind power generator set and a use method thereof. The hot air circulation structure comprises a gear box radiator installed on a gear box and a generator radiator and a hot air circulation fan which are installed on a generator, wherein the input end and the output end of the gear box radiator are respectively connected with a first air inlet and a first air outlet arranged on a cabin cover, through an air path pipeline, to form an independent radiating unit, and the input end and the output end of the generator radiator are respectively connected with a second air inlet and a second air outlet arranged on the cabin cover, through an air path pipeline, to form an independent radiating unit; and a keel in the cabin cover serves as a hollow air return pipeline, the bottom end of the air return pipeline is connected with the input end of the hot air circulation fan arranged on the bottom inside the cabin cover through the air path pipeline, and the output end of the hot air circulation fan supplies heat to components on the bottom inside the cabin cover through the air path pipeline. The hot air circulation structure ensures that the temperature inside the cabin cover is uniform, and various kinds of equipment in the cabin can work reliably at proper temperature.

The invention discloses a flue gas desulfurization process for comprehensively utilizing sintering flue gas. In the flue gas desulfurization process, a desulfurizing tower for absorbing sulfur dioxide and a regeneration tower for reclaiming desulphurization rich solution discharged by the desulfurizing tower are arranged; the sintering flue gas discharged by a sintering machine is conveyed to the regeneration tower, the sintering flue gas taken as a heat source indirectly heats the desulphurization rich solution in the regeneration tower to decompose the sulfur dioxide in the desulphurization rich solution, and an absorption liquid obtained after the desulphurization rich solution is regenerated is conveyed to the desulfurizing tower; and the discharged sintering flue gas in the regeneration tower is subjected to washing, dedusting and temperature reduction and then is sent into the desulfurizing tower, the sintering flue gas is subjected to cyclical absorption and desulphurization by the absorption liquid to obtain purified gas, and the purified gas is exhausted into atmosphere. The flue gas desulfurization process fully makes use of abandon resources, has less energy consumption, and low cost and can effectively reduce the occurrence of the phenomenon of flue gas condensation.

The invention relates to a distributed hot pump group control-based contact line power layered synergic stabilization strategy of an electric heating microgrid. A distributed heat storage water tank group matched with a distributed hot pump group in the electric heating microgrid is classified to management of the electric heating microgrid, a contact line original power PTL0 is obtained by measuring regenerative energy and load power in the microgrid, a power control target PTar is analyzed, the contribution of a storage battery and the hot pump group is adjusted according to the contributionof the regenerative energy and real time information of a user load and by combining energy storage state information of the storage battery and the heat storage water tank with regard to the acquired fluctuation power Pflu, so that the contact line fluctuation power stabilization of the electric heating microgrid is achieved. By taking synergic control of the storage battery and the hot pump group as a core, the matched heat storage resource of an air source hot pump is fully utilized, the heat supply requirement of each hot pump on a user is ensured as well as the power smoothness of the contact line is completed, the medium-frequency fluctuation stabilization is effectively participated by power adjustment of the hot pump, and the implementation cost of an optimization scheme is reduced.

The invention relates to the technical field of heat pumps, and discloses a cascade heat pump control method and system. The cascade heat pump control method comprises a heating mode, the heating mode comprises the steps that the precision preset value of the target parameter is obtained, the ideal temperature value T_set of the used side fluid is set, taking the current detected ambient temperature value as a recording ambient temperature value Tr_air; calculating a set parameter value of the target parameter according to the ideal temperature value T_set and the recorded ambient temperature value Tr_air; detecting a real-time parameter value of the working medium in the evaporative condenser, and calculating a parameter difference value between the real-time parameter value and the set parameter value; and adjusting the high-temperature stage compressor and or the operation frequency of the low-temperature stage compressor until the parameter difference value is smaller than or equal to the precision preset value. By means of the cascade heat pump control method and system, the use side fluid temperature can reach 80 DEG c to 140 DEG c, and a more energy-saving and environment-friendly technical solution is provided for the high-temperature heating requirements in the industrial field.

The invention discloses a long-distance heat supply pipe network operation heat storage adjusting method, which relates to the technical field of urban long-distance heat supply, and comprises the following steps: collecting structure size information and operation data of a pipe network, and cleaning the data; establishing a theoretical model of energy conservation, establishing a heat storage model, establishing an artificial intelligence model of energy conservation, verifying the obtained water supply temperature of the first station, establishing a resistance characteristic model, judging whether the current total resistance of the pipeline meets the requirement or not, establishing a numerical model of pressure characteristics, and judging whether the numerical model of the current pressure characteristics meets the requirement or not. And the water supply temperature for heat storage is output. The operation method is simple, the workload of operators is relieved, the heat transfer efficiency is high, the heat supply comfort of users is guaranteed, it is guaranteed that the long-distance heat supply pipe network prevents water hammers, and conveying energy consumption is reduced.

The pipe network heat storage system comprises a heat supply pipe network, the heat supply pipe network comprises a heat supply network initial station, a heating station, a circulating water pump, a primary network water return pipe and a primary network water supply pipe, and a heat supply network water bypass is installed between the primary network water supply pipe and the primary network water return pipe; an adjusting assembly is arranged on the heat supply network water bypass and used for adjusting the flow and pressure of heat supply network water flowing through the heat supply network water bypass, and the heat storage and heat release functions are achieved through an existing heat supply network. For a cogeneration heat supply system, the heat storage capacity of an existing huge heat supply pipe network is fully utilized to increase the peak regulation capacity of a cogeneration unit, and the huge investment cost of a newly-built energy storage device is saved.

The invention relates to the technical field of central heating, in particular to a heat supply load prediction energy-saving control method and system based on a BP neural network prediction model. The heat supply load prediction energy-saving control method and system predict a heating load Q3 of a heating building in each heating period by utilizing the BP neural network prediction model to obtain a heating load prediction value; and the opening degree of an intelligent balance valve IBV of the heating building is adjusted according to the heating load prediction value, energy saving is facilitated, and the thermal comfort of heating users is improved. The invention further relates to a heat supply load prediction energy-saving control system based on the BP neural network prediction model, and the heat supply load prediction energy-saving control system applies the method.

The invention discloses a heat supply network heat storage characteristic-based electric-thermal system joint economic dispatching method. The method comprises the following steps of: establishing a dispatching target function by considering wind electricity access risk cost and taking minimum wind curtailment as a main target under the premise of carrying out heat supply network heat storage characteristic-based wind electricity-included electric-thermal system combined economic dispatching to satisfy a heat supply demand; determining a system constraint condition, a thermal-electric unit constraint condition, a straight condensing unit constraint condition and a heat supply network state constraint of the dispatching target function; calculating a heat supply amount and a wind electricity output of a system at the current stage; judging whether wind curtailment is generated due to limited wind electricity access ability of the system; if the judging result is positive, carrying out regulation and control by obeying a principle of wind power-first net play and adopting a dispatching strategy of carrying out thermal-electric unit continuous regulation to decrease heat supply streamextraction capacity of the unit; and if the judging result is negative, carrying out regulation and control according to a dispatching strategy of calculating wind curtailment possibility according to wind power outputs at the last time period and the current time period.

The invention discloses an intelligent balance heat supply system and relates to the technical field of heat supply regulation. The intelligent balance heat supply system comprises a heat supply system body and is established on the basis that the heat supply system body comprises a heat exchange station, a unit and a household which are correspondingly transformed, an intelligent heat supply management platform is built on the basis of the intelligent balance heat supply system, and a control valve additionally arranged for transforming the heat exchange station in the heat supply system body further comprises a connecting pipe fitting. According to the intelligent balance heat supply system, a remote metering water meter is additionally arranged on the basis of thermal control measuring equipment of an original heat exchange station, in order to more conveniently observe and grasp the real-time dynamic water replenishing change condition of the system, electric unit balance valves are additionally arranged in all unit buildings of a heat supply community, the heat supply requirements of residents with poor heat supply conditions are met by adjusting the flow quantity, other residents also can be made not to be oversupplied, the overall heat supply efficiency is guaranteed, the number and the operation frequency of circulating pumps are dynamically adjusted according to the actual requirements of the community, and the intelligent balance heat supply system is used for improving the service management level and the technical guarantee.

The invention provides a solar hot water double-person warming bed. The solar hot water double-person warming bed comprises a bed framework, a bed face board is arranged on the bed framework, a bed inner box is arranged below the bed face board, a night flatwise laid coil pipe heating part is arranged on the top face of the bed inner box, daytime bed all-around surrounding coil pipe heating partsare arranged on three side faces of the left, right and tail ends, the bed inner box is of a closed structure, the flatwise laid coil pipe heating part is arranged on the bed inner box, and daytime surrounding type coil pipe heating parts are arranged in peripheral interlayers of the bed inner box and the bed framework. Micropores are formed in two sides of the bed face board, and a shutter air hole is arranged at the position, close to a bed tail, of the face board. At night, only the flatwise laid coil pipe is started, the bed body all-around surrounding coil pipes are started, the micropores of the bed face board are opened, shutters in the framework on two sides of the bed are closed, and only the bed body is heated. During daytime, the all-around surrounding coil pipes are started, the flatwise laid coil pipe is turned off, the rotation angle of the shutters can be adjusted according to the position of a person, and the oriented warming demand is realized while heat supply is provided for a room. The purpose of time-divided heat supply according to the demands can be realized, and the solar hot water double-person warming bed also has the advantages of low energy consumption,little electricity consumption, small floor area and the like.

The present invention discloses a heat pump appliance including a refrigerant circuit operable in a plurality of modes to transfer heat between an exterior atmosphere and an interior atmosphere via arefrigerant. The refrigerant circuit includes a compressor for compressing the refrigerant, a first heat exchanger for transferring heat between the refrigerant and the interior atmosphere, a throttling device for lowering the pressure of the refrigerant, and a second heat exchanger for transferring heat between the refrigerant and the exterior atmosphere. Wherein, the first heat exchanger operates as a condenser to cool the refrigerant in a heating mode and operates as an evaporator to vaporize the refrigerant in a cooling mode, the second heat exchanger operates as an evaporator in the heating mode. The appliance further includes a third heat exchanger connected in the refrigerant circuit and positioned near the second heat exchanger. The third heat exchanger is selectively hydraulicallycommunicated with the first heat exchanger for transferring heat released by the refrigerant at the first heat exchanger to the refrigerant at the third heat exchanger in a defrosting mode, thereby pre-heating the refrigerant entering the second heat exchanger. In this way, the heat energy condensed in the first heat exchanger can be partially used to defrost the coil-type second heat exchanger,so there is no need to reverse the refrigerant cycle in the defrosting mode. Accordingly, heating demands of users can be ensured on defrosting, moreover, the freezing risk of the interior plate-to-plate heat exchanger can be reduced, furthermore, the noise generated in reversing of the refrigerant cycle can be avoided.

The invention relates to the technical field of photovoltaic photo-thermal and heat pump equipment, in particular to a PVT light storage photo-thermal type water source heat pump system and an operation method.The PVT light storage photo-thermal type water source heat pump system comprises a plurality of PVT systems, a plurality of photovoltaic direct drive water source heat pump units and a plurality of users; the PVT system is connected with the photovoltaic direct-drive water source heat pump unit in series or in parallel, the photovoltaic direct-drive water source heat pump unit is connected with a user water pipeline, and the PVT system comprises a photovoltaic solar panel and a heat collector arranged behind the photovoltaic solar panel. Compared with the prior art, the PVT system and the water source heat pump system adopt direct-current equipment to realize a photovoltaic direct-current flexible power supply mode, and heat storage type combined heat and power generation optimization of the PVT system and the water source heat pump system ensures the photovoltaic power generation efficiency requirement, improves the heat supply temperature grade, and meets the heat supply parameter requirement and the heat supply quantity stability.

The invention relates to a method and a system for selecting a location of a regenerative electric boiler to be connected to a distribution network, which is characterized in that the method comprisesthe following steps: determining a heating supply area of the regenerative electric boiler according to the geographical position distribution of a building to be heated; according to the geographical position of the heating area of the regenerative electric boiler, determining the nodes of the distribution network involved in the heating area, and screening the nodes of the distribution network,according to the selected distribution network nodes and the pre-established working characteristic model of regenerative electric boiler, determining the constraint conditions of the multi-objectiveprogramming model for the location selection of regenerative electric boiler, according to the constraint conditions of the heating supply area of the regenerative electric boiler and the multi-objective programming model, solving the multi-objective programming model, obtaining the optimal distribution network node, and completing the location selection of the regenerative electric boiler connecting to the distribution network. The invention can be widely applied in the technical field of distribution network optimization planning.

The invention provides a burner. The burner comprises a combustion chamber, a feeding mechanism, a decoking mechanism and a power assembly, and is simple in overall structure, wherein the feeding mechanism conveys materials to the combustion chamber; the decoking mechanism removes ash residues and coke residues generated in the combustion chamber; the power assembly provides power for the feeding mechanism and the decoking mechanism; the combustion chamber is formed by combining a mounting frame and a combustion plate group formed by a first movable plate, a fixed plate and a second movable plate, a decoking plate does not need to be independently arranged, and the first movable plate and the second movable plate do certain regular movement relative to the fixed plate, so that the dual effects of material adding and decoking can be simultaneously realized; the combustion effect is good, and the decoking effect is good; and the power assembly adopts the combination of a power source, a conveying piece and a connecting rod assembly, and the conveying piece and the decoking rod connected with the connecting rod assembly are synchronously driven by one power source, so that the structure is simple, and implementation is easy. The invention further provides baking equipment, which comprises the burner. According to the baking equipment, the number of accessories is small, the heat supply requirement can be met, and practicability is high.

The invention relates to a gas heat storage oxidation fused salt heat storage peak regulation intelligent control method and system, and belongs to the field of fused salt peak regulation automatic control. The gas heat storage oxidation system comprises a gas heat storage oxidation device, the gas heat storage oxidation device is connected with a first heat supply device, and the gas heat storage oxidation device is further connected with a high-temperature air fused salt heat exchanger; the high-temperature air fused salt heat exchanger is connected with the fused salt device, the fused salt device is connected with the salt storage device, the salt storage device is connected with the fused salt hot air heat exchanger, the fused salt hot air heat exchanger is connected with the second heat supply device, and the gas heat storage oxidation device, the first heat supply device, the high-temperature air fused salt heat exchanger and the second heat supply device are connected with the management control system. The supply quantity of the heat supply system is automatically controlled through the management control system according to specific heat energy demand data of a user, convenience and rapidness are achieved, labor is greatly saved, efficiency is improved, meanwhile, the system treats a large amount of low-concentration gas in a centralized mode, and the dual significance of energy conservation and environment protection is achieved.

The invention discloses a two-stage optimal scheduling method for power supply based on thermal load regulation. The steps include: S1. A day-ahead scheduling stage: predicting the next day's load and wind power output, and obtaining the next day's wind power adjustment according to the heat supply required by the target supply area Heat supply scheduling plan for heat supply; S2. Real-time scheduling stage: supply heat to the target supply area according to the heat supply scheduling plan, and adjust the heat load in real time within the preset range to optimize the heat supply in real time scheduling. The invention has a simple realization method, can realize heat supply scheduling in consideration of heat load adjustment, improves the adjustment ability and heat supply performance of the thermoelectric unit, improves heat supply utilization rate, and reduces environmental pollution.

Based on the distributed heat pump group control, the power stratified synergistic stabilization strategy of the electric heating microgrid tie line The raw power P of the tie line can be obtained from the raw energy and load power TL0 , and analyze the power control target P Tar , for the obtained fluctuating power P flu , According to the real-time information of renewable energy output and user load, combined with the energy storage status information of the battery and the hot water storage tank group, the output of the battery and the heat pump group is adjusted, so as to realize the smoothing of the fluctuation power of the electric heating microgrid tie line. The invention takes the coordinated control of the battery and the heat pump group as the core, makes full use of the supporting heat storage resources of the air source heat pump, ensures the heating requirements of each heat pump to the user while completing the smoothing of the power of the tie line, and effectively adjusts the power of the heat pump. Participate in the stabilization of intermediate frequency fluctuations, and reduce the implementation cost of the optimization plan.

The invention provides a coupled power system with geothermal recovery function and its operation method. The system includes a compressed air energy storage unit, a solar photovoltaic photothermal unit, a geothermal well, and a heating unit; the thermal energy of the compressed air is stored in the geothermal well, and the solar energy The photovoltaic photothermal unit converts solar energy into electrical energy and thermal energy respectively, and provides electrical energy and thermal energy for the system respectively. The collected solar thermal energy is used for heating and heating the heat exchange medium in the compressed air energy storage unit; the heating module makes full use of solar energy, To supply heat to the outside, couple the compressed air energy storage with photovoltaic and photothermal systems, avoid the use of heat storage equipment in the compressed air energy storage system, and at the same time make effective use of the compression heat, while restoring the heat in the geothermal well to meet the requirements The current heating demand, realizing the effect of energy storage, heating and recovery of geothermal energy, is conducive to the promotion and application of geothermal utilization and compressed air energy storage technology.

A two-stage high-temperature condensation heat recovery heat pump system, the system includes a low-pressure compressor (1), a four-way valve (2), an indoor heat exchanger (3), an outdoor heat exchanger (4), and a high-pressure compressor (5) , high-temperature water heater (6), gas-liquid separator (7). The heat pump system can meet different needs under various working conditions. The high-temperature condensation heat recovered in summer can meet the requirements of heating temperature and heating capacity, and the recovery volume can be adjusted from 0 to 100; Separately produce high and low temperature domestic hot water; in winter, it can solve the heat supply and demand contradiction of air source heat pump heating and ensure the demand for high temperature domestic hot water.

The invention discloses a compressor waste heat recovery defrosting system based on phase change energy storage and a working method. The system is composed of an indoor heat exchanger, a first three-way valve, a first throttling valve, an outdoor heat exchanger, a second three-way valve, a second throttling valve, a heat transfer pipe, an electric heater, a phase change heat reservoir and a compressor. By means of opening and closing of the three-way valve, the indoor and outdoor heat exchangers serve as condensers at the same time, the phase change heat reservoir absorbs waste heat of the compressor and then serves as an evaporator to form a new defrosting system; when heat stored by the phase-change material is not enough for defrosting, the electric heater works to ensure that a refrigerant at an outlet of the phase change heat reservoir is superheated steam, so that heat supply and defrosting are carried out at the same time; the waste heat of the shell of the compressor is fully utilized, and the frosting problem in the low-temperature environment in the middle-south region is solved; the phase change heat reservoir serves as an evaporator, so that reversing of the four-way valve is avoided, indoor temperature fluctuation is reduced, pipeline arrangement is reduced, the heat loss is reduced, and then better heating and defrosting effects are achieved.

The invention relates to the technical field of soil source heat pumps, and discloses a soil source heat pump energy-saving heat supplementing device which comprises a water storage tank. The bottom of the water storage tank is fixedly connected with a plurality of U-shaped heat exchange pipes arranged front and back, the two ends of each U-shaped heat exchange pipe penetrate and extend into the water storage tank, and the outer side of the horizontal part of each U-shaped heat exchange pipe is sleeved with a heat exchange sheath; every two front-and-back adjacent U-shaped heat exchange pipesare fixedly communicated through a plurality of communicating pipes, the upper end of the water storage tank is fixedly communicated with a water inlet cylinder and a water outlet cylinder, connectingpipes are inserted into the water inlet cylinder and the water outlet cylinder in a sleeved mode, and the upper ends of the two connecting pipes are fixedly communicated with a cold water pipe and ahot water pipe correspondingly; and a pump machine is fixedly arranged on the inner wall of the right side of the water storage tank. According to the soil source heat pump energy-saving heat supplementing device, effective heat supplementing operation can be carried out when a soil heat source is insufficient, and the heat supply requirement of a user is met.

The invention relates to a low-load period heat supply steam pressure adjusting method and device, a controller and a medium, and the method comprises the following steps: S1, obtaining heat supply unit data, judging whether a control loop input condition is met or not, if yes, entering a step S2, and if not, returning to the step S1 until the loop input condition is met; S2, obtaining the load of the unit in real time, when the load is larger than or equal to the set peak load, adjusting the opening degree of the medium-voltage control valve to 100%, and otherwise, adjusting the opening degree of the medium-voltage control valve to the opening degree value of the medium-voltage control valve corresponding to the load of the unit; in the step S2, obtaining heat supply unit data in real time, judging whether the loop quit condition is met or not, and if yes, stopping adjustment of the middle valve control valve opening value. Compared with the prior art, stable and reliable external steam supply can be realized in a wide load interval, and the operation flexibility of a unit is improved.

The invention provides an energy storage heating system based on air compressor waste heat recovery, and belongs to the field of industrial waste heat recovery. The energy storage heating system is composed of an air compressor waste heat recovery device, a softened water device, a heating device and an energy storage water tank. The system is novel in system, and the entire system is refilled with softened water from time to time through the softened water device, thus the scaling problem of the hot water of an air compressor waste heat recovery and heating system can be avoided, and the usesafety of the entire heating or hot water supply system can be effectively guaranteed; when the external environment temperature changes, the heat recovered from the air compressor waste heat can be stored in the energy storage water tank, or an air compressor waste heat recovery unit and the energy storage water tank can be combined for heating, so that the running energy consumption of the system can be reduced on the premise of ensuring the heat supply demand; and when the heating load is low, heat is stored in the energy storage water tank by opening the air compressor waste heat recoveryunit, and during the heating load peak period, hot water in the energy storage water tank is directly used for heating or hot water supply, so that the effect of energy conservation and consumption reduction is further achieved.

The invention relates to the technical field of biomass boilers, in particular to a small biomass heat supply system for transforming a traditional cooking bench. The small biomass heat supply systemcomprises a cooking bench, a solar thermal collector, a heat radiator and domestic water equipment, wherein the cooking bench comprises a water tank, a hearth and a chimney, a water tank is arranged on the outer wall of the hearth, a partition plate is arranged in the water tank and divides the water tank into an inner water tank and an outer water tank, a water flow channel is formed in the wallsurface of the chimney, water in the water flow channel exchanges heat with smoke in the chimney, an water inlet of the solar thermal collector is connected with the municipal water supply, a water outlet of the solar thermal collector communicates with a water inlet of the inner water tank, and a water outlet of the inner water tank communicates with a water inlet of the heat radiator; and a water inlet of the water flow channel is connected with the municipal water supply, a water outlet of the water flow channel communicates with a water inlet of the outer water tank, a water outlet of theouter water tank communicates with a water inlet end of the domestic water equipment. The inner water tank and the outer water tank are arranged on the outer wall of the hearth, so that hot water canbe provided for heating and hot water for life can be provided as well.