651results about "Central heating components" patented technology

The invention relates to the technical field of heat load prediction, and discloses a heat supply system load prediction method and system, and the method comprises the steps: collecting multi-source sensing data in real time, and collecting outdoor meteorological parameters and building structure information; based on building distribution, a pipe network structure and user load characteristics of a heat supply area, a multi-stage heat supply load prediction model is constructed. And constructing a thermal topological graph model of the heat supply area based on the graph neural network. And periodically collecting parameters of the building-level edge prediction model, the heat exchange station-level aggregation prediction model and the thermal topological graph model, performing global aggregation optimization, and updating and optimizing each edge node model. And obtaining an edge prediction result according to the optimized model, and jointly controlling the heat source output power, the main pump rotating speed and the area valve opening according to the edge prediction result and the heat source level scheduling prediction model. According to the method, the depiction capability of the system on the dynamic load change and the space heat conduction path is improved, and the generalization capability of model updating and the real-time responsiveness of edge deployment are ensured.

The invention belongs to the technical field of building heat supply and intelligent power grid demand response control, and particularly relates to an intelligent power grid-oriented heat pump dynamic preheating and demand response control method, which comprises the following steps of: identifying building thermal characteristic parameters, introducing real-time environment variables such as external meteorological parameters and the like and thermal resistance and thermal capacity characteristics of a building, excessive or insufficient preheating caused by only relying on a timer is effectively avoided, and the balance of accurate heat supply and energy conservation is achieved; by adjusting the preheating starting time and the peak period temperature control strategy, the heat pump can dynamically respond according to the electricity price or the power grid demand signal, and the peak load is translated or reduced, so that the dual purposes of economic benefits, energy conservation and emission reduction are achieved; and formulating a peak period control strategy and formulating a non-peak period control strategy. According to the control method, actual thermal characteristics and external meteorological conditions of a building are taken as cores, load reduction in the peak period of a power grid and indoor thermal comfort are taken as double targets, and preheating time self-adaption, demand response flexibility and system operation reliability are achieved at the same time.

The invention relates to the technical field of intelligent buildings and energy management, and particularly discloses an intelligent building heating intelligent optimization operation method and system based on deep learning, and the method comprises the steps: collecting building environment parameters and equipment operation data in real time through a distributed optical fiber sensing network and an infrared thermal imaging system; extracting minute-level fluid transmission and distribution parameters and hour-level building thermal inertia characteristics by adopting wavelet packet transformation and a graph neural network; then, constructing a neural differential equation prediction model fused with physical constraints, and outputting high-precision thermal load demand prediction through a differentiable heat conduction operator coupling multi-time scale feature; then, a mixed integer optimization model considering equipment life loss is established, and boiler start-stop combination and pipe network flow distribution are synchronously optimized by adopting a hierarchical decision-making mechanism; and finally, closed-loop control is realized through a multi-mode actuator network, and model parameters are dynamically adjusted in combination with an online learning mechanism.

An energy storage system converts variable renewable electricity (VRE) to continuous heat. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Low temperature waste heat from energy production can be recovered and used to improve overall system efficiency.

The invention discloses a building heat exchange unit with a protection function, relates to the technical field of heat exchange devices, and provides the following scheme that the building heat exchange unit comprises a fixed bracket, and further comprises a heat exchange mechanism, a protection mechanism and a control mechanism, and the heat exchange mechanism is arranged on one side of the top of the fixed bracket and used for building cold and hot water exchange; the water storage assembly is arranged on the other side of the top of the fixed support and used for storing building water; the monitoring and protecting mechanism is arranged on one side of the heat exchange mechanism and used for real-time monitoring during cold and hot water exchange treatment of the heat exchange mechanism, and the monitoring and protecting mechanism is connected with the heat exchange mechanism; and the circulating assembly is arranged on the fixed bracket. The cold and hot water exchange efficiency is improved, heat transfer is achieved, meanwhile, the stability of the heat exchanger in the operation process is guaranteed, vibration and noise generated in the operation process are reduced, equipment loss is reduced, the service life is prolonged, water backflow is prevented, the correct water flow direction is guaranteed, and stable operation of the system is maintained; pipeline blockage and influence on normal operation of equipment are avoided, and system water quality is guaranteed.

The present application relates to the technical field of data processing, and especially relates to an intelligent heating load control system and control method based on big data, which comprises the following steps: collecting and storing and backing up heating data in real time, sequentially performing cleaning, denoising and feature extraction operations on the heating data, and training a deep learning model according to the features; using the trained deep learning model to predict the heating load situation to output a load prediction result, triggering an alarm and making corresponding adjustments when the load prediction result is abnormal; determining the control stability of the heating load based on the packet loss rate of the heating data in the collection cycle; if the control stability does not meet the requirements, adjusting the collection interval length of the heating data; if the prediction accuracy does not meet the requirements, adjusting the backup ratio of the heating data. The present application improves the control stability of the heating load.

The application discloses a bathroom heater constant temperature control method, device, equipment, medium and program product, and relates to the technical field of smart home. The method comprises the following steps: acquiring environment data; in response to the fact that the biological body sensing data indicates that the environment where the bathroom heater is located does not contain a specified biological body, controlling the air outlet mode of the air outlet of the bathroom heater based on temperature data; and in response to the fact that the biological body sensing data indicates that the environment where the bathroom heater is located contains a specified biological body, controlling the air outlet of the bathroom heater to diffuse air in the diffusion air outlet mode. On the one hand, the air outlet mode of the air outlet of the bathroom heater is controlled based on the acquired temperature data, the air outlet mode of the air outlet of the bathroom heater is switched between the diffusion air outlet mode and the concentrated air outlet mode, the environment where the bathroom heater is located can quickly reach a constant temperature, and the working efficiency of the bathroom heater is improved. On the other hand, in the case that the environment where the bathroom heater is located contains a specified biological body, the air outlet mode of the air outlet of the bathroom heater is kept in the diffusion air outlet mode, and the performance utilization rate of the bathroom heater is improved.

The system for supplying heat to a building comprises, in addition to an outside air heat exchanger (11), a fan device (12) for conveying outside air through the outside air heat exchanger (11), a latent heat storage unit (13) with a closed tank (18) and a heat pump (15), a piping system (16) filled with a liquid working medium and a pumping device (17) for conveying the working medium through the piping system. The piping system (16), the pumping device (17), the outdoor air heat exchanger (11), the heat pump (15) and the latent heat storage unit (13) form a closed circuit for the working medium and are arranged such that the working medium flows through the outdoor air heat exchanger (11), the latent heat storage unit (19) and an evaporator heat exchanger (21) of the heat pump (15) in the closed circuit in this sequence before being returned to the outdoor air heat exchanger (11).

A liquid to air switching flow system includes a switching flow apparatus within a housing and a source loop and a production loop that are in fluid communication with the switching flow apparatus. The production loop includes a heating / cooling coil that includes a coil input that receives fluid the switching flow apparatus and a coil output that returns fluid to the switching flow apparatus. In a heating mode a first heat exchanger, acting as a condenser, is fluidly connected to the production loop to provide heated liquid to the heating / cooling coil. In a cooling mode, a second heat exchanger, acting as an evaporator, is fluidly connected to the production loop to provide cooled liquid to the heating / cooling coil. A fan is positioned within the housing to push air across the heating / cooling coil to heat the air in the heating mode or cool the air in the cooling mode.

The invention discloses a heating system feedforward control method integrating building thermal inertia and meteorological prediction, which comprises the following steps of: firstly, dynamically identifying building thermal parameters of each room so as to quantify the thermal inertia; then, inputting the parameters and future meteorological prediction data into a feedforward controller; and the controller predicts a room temperature change trend caused by future meteorological disturbance based on a thermodynamic model, calculates a required feedforward compensation control quantity, and adjusts a heating system in advance so as to counteract the disturbance. Through combination of dynamic identification and predictive control, heating control is changed into active intervention from passive response, the problem of control lag caused by thermal inertia is fundamentally solved, the stability and comfort of indoor temperature are remarkably improved, and meanwhile energy waste is avoided through accurate compensation.

A hydraulic unit is for use in a multi zone heating system. The hydraulic unit comprises: a variable output pump; a plurality of independently controllable valves, each valve being associated with one

The invention discloses an efficient heat supply pipe network hydraulic balance monitoring and fault diagnosis system, which relates to the technical field of heat supply systems, and comprises a heat supply pipe network information acquisition module used for acquiring operation parameters in a heat supply pipe network, including the temperature, pressure and flow of the pipe network; and the heat supply pipe network information analysis module is electrically connected with the heat supply pipe network information acquisition module. According to the efficient heat supply pipe network hydraulic balance monitoring and fault diagnosis system provided by the invention, the heat supply pipe network information acquisition module acquires the operation parameters in the pipe network in real time, and the heat supply pipe network information analysis module is combined for preprocessing and algorithm evaluation, so that the real-time monitoring and accurate evaluation of the hydraulic balance state of the heat supply pipe network can be realized; therefore, stable operation of the heat supply system is ensured, the operation efficiency and the heat supply quality of the heat supply system are improved, meanwhile, energy waste is reduced, and the purposes of saving energy and reducing consumption are achieved.

The invention discloses an intelligent heating method and system based on an air source heat pump, and belongs to the technical field of building heating. A heat source is connected with a plurality of target heating units in parallel through a heating pipeline, a plurality of switch valves are arranged at the heating pipeline to independently control the heating amount introduced into each target heating unit, and an indoor temperature sensor is arranged in each target heating unit. And each indoor temperature sensor and each switch valve are in signal connection with a controller. When the controller judges that the indoor temperature of a certain target heating unit is lower than the lower limit of the target heating temperature range, the controller opens the corresponding switch valve; when the indoor temperature is higher than the upper limit of the target heating temperature range, the corresponding switch valve is closed; when the indoor temperature is higher than the lower limit of the target heating temperature range and lower than the upper limit of the target heating temperature range, the opening time of the switch valve reaches the heating time, the switch valve is closed. The heating system is used for intelligent dynamic control, the heat source load can be reduced, and the user comfort is improved.

The invention discloses an electric control box assembly and a heating and ventilation system, and relates to the technical field of heating and ventilation, and the electric control box assembly comprises an electric control box, an electric control board and a heat dissipation piece; the electric control box comprises a box body and a box cover, the box body comprises a main body part and a protruding part extending outwards from the main body part, the box cover is connected with the main body part in a covering mode, an installation cavity is defined by the box cover and the main body part, and a containing groove communicated with the installation cavity is formed in the protruding part; the electric control board comprises a substrate and a plurality of electronic elements mounted on the substrate, the substrate is fixed in the mounting cavity, and at least one part of the plurality of electronic elements extends into the accommodating groove; the heat dissipation piece is fixed to the box body and located on the outer side of the box body, and the heat dissipation piece is used for dissipating heat transmitted by the box body outwards. According to the technical scheme, the protruding part is arranged on the box body, the electronic element is matched with the containing groove formed in the protruding part, the heat exchange contact area of the electronic element in the heat dissipation process is increased, and the heat dissipation efficiency is improved.

The invention relates to the technical field of data processing, in particular to an intelligent heat supply load control system and method based on big data, and the method comprises the steps: collecting heat supply data in real time, storing and backing up the heat supply data, and sequentially carrying out the cleaning, denoising and feature extraction of the heat supply data, training a deep learning model according to the features; using the trained deep learning model to predict the heat supply load condition so as to output a load prediction result, and triggering an alarm and performing corresponding adjustment when the load prediction result is abnormal; determining the control stability of the heat supply load based on the packet loss rate of the heat supply data in the plurality of acquisition periods; if the control stability does not meet the requirement, the collection interval duration of the heat supply data is adjusted; and if the prediction accuracy does not meet the requirement, the backup proportion of the heat supply data is adjusted. The control stability of the heat supply load is improved.

The invention relates to the technical field of smart home, in particular to a smart home heating flow remote control system based on the 5G Internet of Things, which comprises a data acquisition and transmission module, a central control module, a flow regulation module, an environment sensing module, a user interaction and remote control module and a fault detection and alarm module. Multi-source data in a home environment is collected in real time and is transmitted to the central control module through a 5G network for analysis and processing. The central control module calculates an optimal heating flow adjusting strategy through an optimization algorithm, controls the flow adjusting module to accurately adjust the flow of hot water or air in the heating system, dynamically adjusts an indoor temperature control strategy through the environment sensing module, monitors the operation state of the system in real time through the fault detection and alarm module, and gives an alarm when an abnormality is found. According to the invention, the energy utilization efficiency is improved, the household energy expenditure and carbon emission are reduced, and the energy-saving effect is obvious.

The invention discloses an electric control box assembly and heating and ventilation equipment, the heating and ventilation equipment comprises the electric control box assembly, the electric control box assembly comprises an electric control box, an electric control board, a conductive wire and a sealing colloid, the electric control box comprises a box body and a box cover, the box cover and the box body are enclosed to form a mounting cavity, the mounting cavity is internally provided with a sealing glue groove, and the sealing glue groove is arranged in the mounting cavity. A first wire passing hole and a second wire passing hole are formed in the groove wall of the glue sealing groove, and the second wire passing hole is communicated with the outside; the electric control board is mounted in the mounting cavity; one end of the conductive wire is connected with the electric control board, and the other end of the conductive wire sequentially penetrates through the first wire passing hole and the second wire passing hole and extends to the outside; and the sealing colloid is arranged in the sealing groove and blocks a gap between the conductive wire and the second wire passing hole. According to the technical scheme of the invention, a stable sealing effect can be formed at a conductive wire penetrating-out position of the electric control box assembly.

To provide a system and a method for heating warm water to be used both for heating (warming) at least one environment of a building, and for hygienic water to be used in the building.SOLUTION: A system for heating water comprises: a circuit (2) in which working fluid is circulated, and including heating means (20) for heating the working fluid; a first supply line (31) for supplying hygienic water; a second supply line (32) for supplying water for heating at least one environment of a building; first heat exchange means (5) for exchanging heat between the circuit (2) and the first supply line (31); and second heat exchange means (4) for exchanging heat between the circuit (2) and the second supply line (32). The heating means (20) comprises a piston pump (21).SELECTED DRAWING: Figure 1

The invention provides a control device of a heat supply system and a using method of the control device, a secondary network side main pipeline of the heat supply system is connected with a plurality of secondary network side branch pipelines in parallel, and the heat supply device comprises a valve opening degree adjusting unit used for adjusting the opening degree of a flow adjusting valve on each secondary network side branch pipeline; the supply and return water pressure difference measuring unit is used for measuring the minimum supply and return water pressure difference of the secondary network side; and the heat supply adjusting unit is used for adjusting the frequency of a circulating water pump of the secondary network side main pipeline and the water outlet temperature of the secondary network side main pipeline based on the distribution characteristics of the opening degrees of the flow adjusting valves and the minimum water supply and return pressure difference of the secondary network side. According to the technical scheme, self-adaptive matching of the secondary network side input heat and the actual heat requirement is achieved based on the opening degree distribution characteristics of the flow adjusting valve, and the energy-saving and safety requirements of the system are considered.

The invention discloses a heat supply pipe network monitoring method and system based on temperature balance, a medium and a product, and relates to the field of data monitoring. According to the method, the monitoring system periodically collects the real-time operation parameters of all the building units in the heat supply pipe network, the initial flow distribution coefficient of all the building units is calculated according to the water supply and return pressure difference, and the final flow distribution coefficient is obtained by combining building unit occupancy rate correction. And the monitoring system calculates the temperature balance degree of each building unit according to the return water temperature and the indoor temperature so as to determine the temperature balance index of the heat supply pipe network, further draws a pipe network temperature balance change curve, and determines the adjustment sensitive time period according to the curve slope. According to the dynamic monitoring mode based on temperature balance, heat supply abnormity can be found in time, the data collection frequency and the alarm threshold value are adjusted in a self-adaptive mode according to the sensitive time period where the building unit is located, the abnormity detection accuracy is improved, meanwhile, resource waste caused by excessive collection is avoided, and refined monitoring of the heat supply pipe network is achieved.

A method for detecting gas bubbles in a fluid flow of a secondary circuit of a heat pump system, comprising the following steps: monitoring a frequency signal of a flow sensor, wherein the flow sensor is designed as a vortex flow sensor and is arranged in the secondary circuit, and switching the heat pump to a safe state when gas bubbles are detected by means of the monitored frequency signal of the flow sensor, wherein the monitoring of the frequency signal comprises monitoring at least one, preferably several and particularly preferably all of the following signal parameters: a duty cycle, a maximum occurring frequency and a frequency step.

The invention discloses a wall-hanging stove and floor heating linkage control device which comprises a wall-hanging stove, floor heating, an actuator, a water distributing and collecting device and temperature controllers, the wall-hanging stove is connected with the water distributing and collecting device through a pipeline, the water distributing and collecting device is connected with a plurality of floor heating devices through pipelines, each floor heating device corresponds to one temperature controller, and the temperature controllers are connected with the wall-hanging stove. The system further comprises an intelligent compartment control box, a linkage transceiver, outdoor temperature sensors and indoor temperature sensors, each floor heater corresponds to one indoor temperature sensor, the intelligent compartment control box comprises a controller and an actuator, the multiple indoor temperature sensors are connected with the controller, and the linkage transceiver is connected with the controller. And the plurality of temperature controllers are connected with the controller. According to the wall-hanging stove, through intelligent linkage control, the invalid operation time of the wall-hanging stove is effectively shortened, and compared with a traditional independent operation mode, energy can be saved by 20% or above; a user can operate through a unified interactive interface, and does not need to control the wall-hanging stove and the floor heating system respectively, so that the operation difficulty is greatly reduced.

The invention discloses a regional heat supply system energy-saving optimization technology based on multi-dimensional intelligent prediction and cooperative regulation, which comprises the following steps: (1) establishing a heat consumer side mathematical model of a regional heat supply system, covering a heat exchanger, a secondary pipeline, a radiator and a building envelope structure, and obtaining an indoor temperature dynamic response model; (2) collecting multi-dimensional data such as primary and secondary loop temperature, pressure, flow, valve opening and indoor and outdoor environment in real time; (3) constructing an intelligent prediction model based on CNN and FCM, optimizing hyper-parameters by using BKA, and realizing high-precision short-term prediction of the water supply temperature of the secondary loop; (4) taking a prediction result as a target, and adopting a WOA regulated PID controller to accurately regulate a primary loop flow valve; and (5) dynamically adjusting the rotating speed of a secondary side water pump according to the temperature difference of supply water and return water of a secondary loop, optimizing system heat distribution and realizing real-time load adaptation. According to the invention, the problem of disjunction of regional heat supply prediction and regulation is solved, and a new method for realizing accurate temperature control and energy conservation is provided.

The present invention relates to a heat exchange substation (50) of an energy distribution system comprising: a heat exchanger (51) with thermal inertia comprising a primary side (37a) connected to a primary supply line (36) and to a primary return line (37) and a secondary side (37b), opposite the first primary side (37a), the secondary side (37b) being connected to a secondary supply line (56) and to a secondary return line (57) of a secondary heating circuit (68), the secondary supply and return lines (56, 57) being in communication with one or more heating units (18), wherein the heat exchanger (51) comprises a tank (67) within which a first shell- and-tube circuit (81) is arranged connected at the inlet to the primary supply line (36) and at the outlet to the primary return line (37) and a second shell-and-tube circuit (82) connected at the inlet to the secondary return line (57) and at the outlet to the secondary supply line (56), and the tank (67) contains a phase change material (71), the first shell-and-tube circuit (81) and the second shell-and- tube circuit (82) being in contact with the phase change material (71).

Valve device (1) for heating radiators (R), comprising a hollow body (2) having a first fitting (3) provided with a threaded nipple (4) connectable to the base of a radiator (R), a second fitting (5), orthogonal to the first fitting (3) and connectable to a hydraulic heating circuit, and a third fitting (6), orthogonal to the first and second fittings (3, 5) and containing a valve (15; 16; 17) that controls the communication between the first and second fittings (3, 5). The first fitting (3) is tubular and inside it a hollow core (7) bearing the threaded nipple (4) is coaxially housed and selectively insertable in a sealed manner from one end (3a) or from the opposite end (3b) of the first fitting (3).

The invention relates to a heat pump coupling frame kit (1) for a hybrid energy transformation device (600). The heat pump coupling frame kit (1) comprises a frame (2) for connecting the heat pump coupling frame kit (1) to a wall and to a boiler unit (500), in particular a boiler frame kit (100). Further provided is a distributor (10) arranged in the frame (2), in particular connected to the frame (2). The distributor (10) comprises at least one load connector set (17, 18) for connecting the distributor (10) with at least one load circuit (300) of an energy system (400), the load connector set (17, 18) comprising a first load connector configured to connect the load circuit of the energy system (400) to an output of the distributor (10) and a second load connector configured to connect a return from the load circuit to the distributor (10); a boiler connector set (15), comprising a first boiler connector configured to connect the distributor (10) to an output line of the boiler unit (500) and a second boiler connector configured to connect the distributor (10) to a return line of the boiler unit (500); and an energy monitoring module (1000) configured to determine a thermal energy production of the boiler unit (500) by: (a) querying the boiler unit (500) via a local connection, bus, or network; and / or (b) determining a first temperature and first flow volume at the first boiler connector, and calculating the thermal energy output of the boiler unit (500) based, at least in part, on the first temperature and the first flow volume, wherein the energy monitoring module (1000) comprises a first temperature sensor and a first flow sensor; and / or (c) determining the first temperature and the first flow volume at the first load connector or at a combined output of the distributor (10) to the at least one load circuit (300), and calculating the thermal energy output of the boiler unit (500) based, at least in part, on the first temperature and the first flow volume, wherein the energy monitoring module (1000) comprises a first temperature sensor (1110) and a first flow sensor (1112); and / or (d) determining the heat demand of the boiler unit (500), and calculating the thermal energy output of the boiler unit (500) based, at least in part, on the heat demand of the boiler unit (500) and a boiler efficiency; and / or (e) determining an energy consumption of the boiler unit (500) and determining the thermal energy output of the boiler unit (500) based, at least in part, on the energy consumption of the boiler unit (500) and the heat boiler efficiency; and / or (f) receiving information from a heat meter via a local connection, bus, or network.

Heat transfer systems for computer server(s) employing a heat transfer means (e.g., circulating fluid, thermally conductive material, etc.) to transfer heat from the heat source (e.g., computer server(s), fireplace, wood stove or other heat source) to a remote location of a home, residence, building or other structure.

The invention relates to a storage water heater (400) comprising a tank (41); and a device (1010) for fluidly connecting the water heater to a domestic water network (50), comprising a first and a second access port (11, 12), configured to be connected respectively to a first (45) and selectively to a second and third access point (46, 48) of the tank, and a water inlet port (13) and a water outlet port (14), configured to be connected to a supply (51) and a draw-off (52) of the network; and an air exchange element (15); admitting a first configuration, in which the water inlet port is connected to the first access port and the second access point is connected to the second access port; and a second configuration, in which the third access point is connected to the second access port and the air exchange unit is connected to the fourth access point. See Figure 7 for the abbreviated version.

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.

A heat source unit coupling system disclosed herein may include a heat medium circulation channel including a heat medium outgoing pipe and a heat medium return pipe; a water distribution channel including a water supply pipe and a hot water outlet pipe; a plurality of heat source units connected in parallel to the heat medium circulation channel and the water distribution channel; and a coupling controller communicable with each of the plurality of heat source units. Each of the plurality of heat source units may be configured to perform a space heating operation for heating a heat medium supplied from the heat medium return pipe and supplying it to the heat medium outgoing pipe; and a hot water supplying operation for heating water supplied from the water supply pipe and supplying it to the hot water outlet pipe.