250 results about "Heating energy" patented technology

The invention discloses a cold and heat supply unit and process capable of deeply utilizing a heat source in the technical field of absorption refrigeration. The cold and heat supply unit comprises a refrigerating unit, a heating unit, a heat source flash tank and a high-pressure absorber. The refrigerating unit utilizes an external heat source to produce cold energy, the heating unit utilizes the heat source used by the refrigerating unit to produce cold energy so as to cool circulating water of the refrigerating unit, and the heat source flash tank utilizes the heat source discharged by the high-pressure absorber to heat; the absorption refrigerating unit is optimally designed, so that the absorption refrigerating unit can deeply utilize a heat source and supply cold and high-level heat energy at the same time, the problem that the heat source utilization rate of the unit is not high is solved, and the requirement for high-temperature heat energy in the production process is met; and low-grade waste heat is converted into cold energy and high-level heat energy, transition and upgrading of energy quality can be achieved, the unit has the cold and heat combined supply function, and the application scene is greatly expanded.

The embodiment of the invention provides a thermal energy storage method and system based on a multi-section particle packed bed, the thermal energy storage system comprises an electric heating module, a fluidized bed thermal energy storage module and a fixed bed thermal energy storage module, the fluidized bed thermal energy storage module comprises a fluidized bed and first particles filled in a cavity of the fluidized bed, the electric heating module is partially arranged in the fluidized bed cavity and is in contact with the first particles, the fixed bed heat energy storage module is connected with the fluidized bed heat energy storage module, and the fixed bed heat energy storage module comprises a plurality of fixed beds connected in parallel and second particles filled in the fixed beds. According to the embodiment of the invention, rapid heat storage of the fluidized bed and the fixed beds is realized, the heat storage density is improved, heat storage is performed through a plurality of fixed beds, and the defect that the size of the fluidized bed is too large when the fluidized bed is adopted for heat storage can be avoided.

The invention discloses an optimal scheduling method for a ground source heat pump system, and relates to the technical field of new energy utilization and intelligent control of a heat supply system.The method comprises the steps that the ground source heat pump system is divided into a tail end heat exchange layer, a water pump transmission and distribution layer and a source side heat pump coupling layer on the basis of a heat energy conversion and transmission path; constructing a response coupling relation and a mapping model; operating data of three layers of equipment are collected, a time sequence of each layer is established, a dynamic delay structure matching coefficient is calculated, and a multi-layer linkage response lag risk is identified based on a first threshold value; further monitoring a second derivative of the source side temperature change, calculating a thermal inertia interference index, and judging that the thermal response of the source side is abnormal in combination with a second threshold value; and the water supply flow of each branch is extracted, the target water supply value and the total flow of the system are combined, a flow deviation factor is calculated, flow distribution deviation is recognized according to a third threshold value, accurate strategy generation and intelligent scheduling control based on multi-parameter dynamic characteristics are achieved, and the response coordination and operation stability of the system are improved.

The invention relates to the technical field of temperature control, in particular to an intelligent solar heat supply temperature management and adjustment system which comprises a thermal distribution modeling module, a thermal equilibrium optimization module, a fluid heat transfer design module, a dynamic layout adjustment module and an environmental factor coupling module. According to the method, through calculation based on solar radiation intensity and heat absorption parameters, a thermal distribution field is accurately established, a dynamic optimization basis is provided, thermal gradient differences are reduced, heat distribution balance is achieved, and through optimization of heat absorption coating covering density and pipeline layout, the heat energy transfer efficiency is improved, and local overheating and energy loss are reduced; pipeline distribution and fluid flow rate optimization are combined with heat transfer oil heat exchange performance, heat transfer efficiency is enhanced, radiation angles and layout parameters are dynamically adjusted, the solar energy absorption rate of the heat collection device is improved, output parameters are adjusted in real time in combination with environment temperature and wind speed, the capacity of the system for adapting to complex climate conditions is improved, and efficient and stable heat energy utilization is achieved.

The invention relates to the technical field of heat energy storage and heating, and provides a refrigeration and heating integrated system based on phase change heat storage and a control method, the refrigeration and heating integrated system comprises a solar heat collection module, a heat storage oil tank, a phase change heat storage module, an absorption refrigeration module, a heating and heat supplementing module and a multi-mode control module; the multi-mode control module is used for controlling the phase change heat storage module to store heat in a heating period in response to the valley electricity time; monitoring the temperature of a heat storage oil tank in response to the non-valley electricity time, switching a heat supply mode of the system based on a comparison result of the temperature of the heat storage oil tank and a set threshold value, and controlling the phase change heat storage module to store heat or driving the absorption type refrigeration module to refrigerate in response to triggering of a user cold load demand in a cold supply period; and in response to the situation that the user cold load demand is not triggered, the heating and heat supplementing module is controlled to supplement heat to the phase change heat storage module. By integrating solar heat collection, phase change heat storage and valley electricity heat compensation strategies, efficient utilization and multi-source cooperative energy supply of clean energy are achieved.

The utility model discloses a heat recovery and utilization system and a micro-pressure steam heat energy unit, and an efficient heat energy recovery and reutilization loop is constructed through equipment such as an evaporator, a screw compressor, a condenser, an expansion valve and a flash tank. The evaporator absorbs heat from heat source water and evaporates a refrigerant into low-pressure gas, then high-temperature hot water is generated through the compression and condensation process, meanwhile, the flash tank is used for converting the high-temperature hot water into micro-pressure steam so as to meet the requirement for low-pressure steam in the system, by efficiently recycling and utilizing waste heat, the dependence of the system on external steam and electric power is reduced, and the energy consumption of the system is reduced. Therefore, energy efficiency is improved, operation cost is reduced, and energy waste and environmental influence are reduced.

The invention provides a noise isolation type heat energy transfer heating method and system, and belongs to the technical field of industrial waste heat utilization and heating ventilation air conditioning. The system comprises a waste heat fluid collecting unit, a first-stage heat exchanger unit, a middle heat transfer medium circulating unit, a second-stage heat exchanger unit and a heating circulating water conveying unit which are sequentially connected through pipelines. The system further comprises an acoustic isolation structure unit, a temperature regulation and control unit and a system supporting frame unit which are coupled with the thermal unit structure. The core of the system is that through thermal-acoustic integrated collaborative design, waste heat of heat source equipment is efficiently transferred, meanwhile, effective isolation of overall operation noise of the system is achieved through a multi-mode and multi-physical-field noise suppression mechanism, the technical contradiction that heat energy recovery and noise control are separated mutually in the prior art is solved, and the system is suitable for large-scale popularization and application. And the device is particularly suitable for heating places with strict requirements on sound environments.

The invention relates to a thermal energy storage system and method based on temperature stratification and dynamic isothermal layer control. The system comprises a pressure-resistant shell internally provided with a tower-type layered heat storage unit, the unit is composed of a plurality of heat storage cavities which are stacked up and down, and the temperature gradient with the high temperature at the upper part and the low temperature at the lower part is naturally formed by utilizing the characteristic that the water temperatures are different and the densities are different; a partition plate with a water passing structure is arranged between every two adjacent cavities so as to balance the water level and prevent turbulent flow. And each chamber is provided with a water outlet valve and a water return inlet valve which are independently controlled. According to the method, opening and closing of valves of corresponding temperature layers are dynamically controlled according to the real-time temperature of external thermal equipment through a homothermal layer control strategy, synchronous movement of a water taking layer and a water returning layer along with process temperature changes is achieved, and therefore accurate storage and taking and gradient cyclic utilization of heat energy are completed. The problems that in the prior art, a system is redundant, and the heat energy mixing and single-time utilization efficiency is low are solved, the structure is simplified, heat energy is stably stored, the energy efficiency is maximized, and the energy-saving effect is remarkable.

The invention provides a condensation-evaporation-phase change heat reservoir based on a two-stage heat pump, and relates to the technical field of heat storage and heat exchange design, the condensation-evaporation-phase change heat reservoir comprises a heat storage module, a pipeline module and a heat pump module, the pipeline module is connected with the heat storage module and the heat pump module, and the heat pump module is connected with the heat storage module. The condensation-evaporation-phase change heat storage device is coupled to the condensation side of the first-stage heat pump and the evaporation side of the second-stage heat pump and has the functions of condensation, evaporation and phase change heat storage / release, and in the heating-heat storage stage, the first-stage heat pump takes heat from a low-temperature heat source, condenses and releases heat in the condensation-evaporation-phase change heat storage device and stores heat at the same time; and in the heat release-heat supply stage, heat is released by the condensation-evaporation-phase change heat reservoir and is absorbed by the second-stage heat pump evaporator, and higher-temperature heat energy is prepared. The cascade phase change heat storage and heat pump two-stage compression are combined, the heat exchange efficiency is improved through cascade heat storage / release, and the cascade phase change heat storage heat pump has the characteristics of time-sharing operation, flexible heat supply and large temperature rise.

The invention discloses a deep mine waste heat utilization and low-dew-point rotating wheel dehumidification and cooling system which comprises a heat pump unit, an air handling unit, a water gushing unit and a heat exchange unit, and the air handling unit, the water gushing unit and the heat exchange unit are all connected with the heat pump unit. The air treatment unit comprises a pretreatment unit, an air-water heat exchange unit, a temperature treatment unit, a humidity treatment unit and an air supply unit, the pretreatment unit is connected with the temperature treatment unit, the temperature treatment unit comprises a multi-stage evaporator, the humidity treatment unit comprises a multi-stage dehumidifier, and the air supply unit discharges treated mine airflow into a mine working face; the air-water heat exchange unit is arranged on the side, away from the pretreatment unit, of the humidity treatment unit. The air-water heat exchange unit and the first condenser form a circulation loop, and the first condenser continuously feeds high-temperature cooling water into the air-water heat exchange unit, so that the heating energy consumption of regenerated air is reduced, and the problem of high regeneration energy consumption of the rotary dehumidification system is solved.

To provide a technique capable of accurately estimating heat energy consumption of a heat utilization facility without requiring an expensive flowmeter and without stopping a factory.SOLUTION: An estimation device (1) includes an estimation unit (11) configured to acquire a first measurement value from each of a plurality of heat utilization facilities (21 to 22) and calculate an estimation value of thermal energy consumption of each of the plurality of heat utilization facilities (21 to 22) from the first measurement value, a correction value calculation unit (12) configured to calculate a correction value from an analysis value of a drain flow rate of an entire plant (2) including the plurality of heat utilization facilities (21 to 22) calculated by a simulator (3) and an actual measurement value of the drain flow rate of the entire plant (2), and an estimation unit (13) configured to estimate the thermal energy consumption of each of the plurality of heat utilization facilities (21 to 22) by correcting the estimation value using the correction value.SELECTED DRAWING: Figure 4

The invention provides a thermal power peak regulation system utilizing latent heat and a working method thereof, aims to solve the huge challenge that thermal power serves as energy supply to bear a main peak regulation power supply in a power grid system for a long time, and relates to the technical field of thermal power peak regulation. Heat energy is stored in the fused salt medium in a steam mode and an electricity mode to meet the peak regulation requirement of the thermal power generating unit, the fused salt further releases heat to return to the thermal power generating unit, and therefore the peak capacity and the operation economical efficiency of the unit are improved.

The invention relates to the technical field of casting sand production, and discloses a drying sand and roasting sand universal type heat recovery system which comprises a box body, a boiling device is arranged on the box body and used for suspending and fluidizing sand particles, and a heat recovery device is arranged on the box body and used for collecting heat from gas exhausted from the boiling device. The heat recovery device comprises two gas collecting hoods, the two gas collecting hoods are both communicated with the top of the box body, used for collecting high-temperature gas generated in the box body and connected with a cyclone dust collector through a sixth pipeline, and the cyclone dust collector is connected with a second induced draft fan through a fourth pipeline and connected with a kiln and a burner through a fifth pipeline. The device is used for heating casting sand or other materials by using the recovered heat. And through comprehensive application of the boiling device and the heat recovery system, heat energy recovery in the production of the roasting sand for casting is realized, and the production cost and the energy consumption are effectively reduced.

[Problem] To identify the thermal conductance of a heat source and contribute to the effective utilization of unused thermal energy. [Solution] The present invention involves: making a heat conduction path having a cooling source at one end be connected via the other end to a heat source to be measured (S10); installing a heating element, which can be controlled so that the amount of heat generation fluctuates by applying fluctuating heating energy, in the heat conduction path, and measuring the temperature in the heat conduction path to acquire a first temperature when affected by the heat generation of the heating element and a second temperature when not affected by the heat generation of the heating element (S30, S50); and calculating the heat conductance of the heat source on the basis of the difference (S60) between the first temperature and the second temperature and the heating energy when the first temperature is measured (S80). As a result, the heat conductance of the heat source can be calculated without the need for identifying the specific heat, mass, or the like of the heat source, so that it is possible to contribute to the effective utilization of unused thermal energy of the heat source.

The invention relates to an immersion bath for cryotherapy. The immersion bath comprises an immersion tank, which can be filled with water, for immersing a substantial portion of the body of a person, and a temperature-control device which is designed to control the temperature of a temperature-control medium and to transfer heat energy between the temperature-control medium and the immersion tank and / or the water in a heat transfer region. The temperature-control device includes a temperature-control unit which controls the temperature of the temperature-control medium, and a control device which controls the temperature-control unit. The temperature-control unit has an ice-generation mode, in which the temperature-control unit controls the temperature of the temperature-control medium in the heat transfer region to a temperature of less than or equal to 0°C, and a defrost mode, in which the temperature-control unit controls the temperature of the temperature-control medium in the heat transfer region to a temperature of greater than 0°C. The control device is designed such that it operates the temperature-control unit, upon start-up, in a repetitive temperature-control cycle in which the temperature-control unit operates alternately in the ice-generation mode and in the defrost mode.

The invention relates to a method (100) for determining an amount of thermal energy supplied to a premises (20) in a building (2) over a given period, by a collective heat management device (30), said determination, carried out by one or more processors, including the use of a plurality of ambient temperature values for the building, a value of the temperature outside the building (2), a volume of the premises (20) in the building, and a heat loss coefficient, said method being characterised in that the heat loss coefficient was calculated (130) from a thermal simulation model (41) of the building, taking into account the geometry of the premises and the composition of the walls.The invention also relates to an allocator (10) for determining an amount of thermal energy supplied by a collective heat management device (30), and a system (1) for allocating heating costs comprising an allocator (10) according to the invention.

A technique increases the round-trip efficiency (“RTE”) of a pumped thermal energy storage system by changing the coefficient of performance (“COP”) and efficiency of the cycles by changing the temperature ratios of each, which is accomplished by using two separate low temperature reservoirs (“LTRs”) that are at different temperatures. More particularly, the disclosed technique accomplishes this by using a low-temperature thermal reservoir during the charging process that is at a higher temperature than the generating cycle's low-temperature thermal reservoir. The low-temperature thermal reservoirs are “decoupled” and “independently existing”, in that their temperature and utilization are independent of one another. In general, decoupled and independently existing reservoirs may also be different in their independent reservoir media, reservoir location, and heat exchangers.

The invention relates to a heat pump, wherein: at least one of the at least two thermal-energy storage systems is configured to store thermal energy in the form of heat at a temperature between +100° C. and +800° C., at least one of the at least two thermal-energy storage systems is configured to store thermal energy in the form of cold at a temperature between −100° C. and +150° C.; and at least one thermal-energy release system is configured to release heat and / or cold separately or in parallel over time, or at least one thermal-energy release system is configured to operate in a parallel release mode that may be alternated with an operation mode of separate release of heat and / or cold over time.

The embodiment of the invention provides a baking waste heat recovery method and system based on multistage heat exchange, and belongs to the technical field of waste heat recovery and utilization. The method comprises the steps that exhaust operation parameters in the baking process are obtained, and a plurality of thermotechnical stages and stage identifiers corresponding to the thermotechnical stages are obtained; determining a heat grade index and a dew point difference of each thermal stage based on the stage identifier, and generating a cascade sequence and a valve position control parameter corresponding to each thermal stage; calling the corresponding cascading sequence and the valve position control parameters according to the stage identifiers to execute sequential heat exchange, and calculating to obtain a heat recovery result of each thermal stage; and according to the stage identifier and the production line rhythm, the heat recovery result is distributed to the heat utilization link according to the priority matrix, and the priority matrix and the distribution quantity are dynamically corrected based on the energy demand during stage switching. According to the scheme, dynamic matching of heat energy and self-adaptive control of condensation risks in the baking process are achieved, so that the waste heat utilization rate is increased, and the temperature field in the furnace is kept stable.

A datacenter dry cooling system and method for cooling a heat-generating source are provided. The configuration includes an evaporating pad disposed on an air-to-liquid heat exchanger panel and an evaporating cooling water distribution arrangement for applying a controlled measured amount cooling water to the evaporating pad. The applied water serves is to be evaporated while the evaporating pad is exposed to ambient airflow to dissipate thermal energy of warmed liquid received from the heat-generating sources. The evaporating pad incorporates at least one of a temperature sensor or a humidity sensor for detecting outside temperature or humidity levels. A controller communicatively-coupled to the temperature or humidity sensor controls the volume flow of the cooling water based on the detected temperature or humidity levels.

The invention discloses an intelligent heat supply energy-saving control method based on deep learning, particularly relates to the technical field of water source heat pump heat supply, and is used for solving the problems of sudden increase of invalid power consumption of a compressor and recessive attenuation of energy efficiency caused by a monitoring blind area of a water body temperature field in the prior art. The method comprises the following steps: acquiring upstream water environment parameters of a heat absorption port in real time, and generating a downstream dynamic temperature distribution state by adopting deep learning enhanced dynamic heat transfer coupling analysis; on the basis of thermal gradient vortex structure recognition and water body heat capacity supplement rate unbalance judgment, a local low-temperature area is accurately positioned; establishing an electric hydraulic frequency domain coupling relation between the heat pump operation frequency and the water body flow velocity pulsation spectrum, and quantifying the hydraulic resonance triggering probability; ineffective power consumption increment is evaluated in combination with the low-temperature region state parameters and the resonance probability; and finally, the driving frequency of the compressor is dynamically adjusted according to the condition that the invalid power consumption increment exceeds the threshold value, and the flow of the circulating pump is synchronously optimized, so that full-chain control from local low-temperature region identification to energy efficiency closed-loop optimization is realized.

The present disclosure relates to a computer-implemented method for predictively preparing a water supply system installed in a building, the water supply system including a heat pump configured to transfer thermal energy from an ambient environment to a thermal energy storage medium and including a control module configured to control the operation of the heat pump, the water supply system being configured to provide water heated by the thermal energy storage medium to users of the building at one or more water outlets, the method being performed by the control module and including: receiving a current location of the user; estimating an expected arrival time of the user to the building based on the current location; and determining an expected utilization of the building based on the expected arrival time.

The application discloses a power plant start-up stage feedwater heating energy-saving operation method, which is applied to a self-adaptive feedwater regenerative system in a thermal power plant; the self-adaptive feedwater regenerative system comprises a high-pressure heater group and a bypass steam supply branch; the bypass steam supply branch is respectively communicated with a condenser in the thermal power plant and a steam side of at least one high-pressure heater in the high-pressure heater group; during the start-up stage of the thermal power plant, the pressure value change of main steam is acquired and monitored in real time, so as to judge whether the pressure value is in a preset operation range; if yes, the bypass steam supply branch is opened, part of the main steam is introduced into the steam side of the at least one high-pressure heater in the high-pressure heater group, the feedwater flowing through the water side of the high-pressure heater is heated, and meanwhile, the remaining part of the main steam is introduced into the condenser; after the thermal power plant meets preset normal operation conditions, the bypass steam supply branch is closed, and a normal feedwater heating mode is switched synchronously.

The invention discloses a heat pump system and a waste heat recovery method, and belongs to the technical field of heat pump waste heat recovery, the heat pump system is used for recovering waste heat of a waste heat source, the waste heat source comprises a water outlet pipe and a water inlet pipe, and the heat pump system comprises a first-stage heat exchange unit, a second-stage heat exchange unit and a cold using end assembly; the first-stage heat exchange unit comprises a first condensation assembly and a first evaporation assembly, and a heating side channel of the first condensation assembly is connected with the water outlet pipe and used for receiving waste heat and heating water into high-temperature water. A cooling side channel of the first evaporation assembly is used for introducing normal-temperature water and outputting low-temperature water after the normal-temperature water is cooled; the second-stage heat exchange unit comprises a second condensation assembly and a second evaporation assembly. The two ends of a heating side channel of the second condensation assembly communicate with a cooling side channel of the first evaporation assembly and the water inlet pipe correspondingly. And the cold end assembly is in heat exchange connection with the second evaporation assembly. Waste heat can be converted into high-grade heat energy and cold energy at the same time, consumption of primary energy is reduced, and the energy utilization efficiency is improved.

The invention provides a thermal power poly-generation system integrating waste heat recovery and pump heat energy storage. The thermal power poly-generation system comprises a combined heat and power generation system, and a flue gas waste heat utilization system exchanges heat with flue gas of the combined heat and power generation system and recovers flue gas waste heat; the pump heat energy storage system comprises a heat pump and a heat storage system, the heat storage system is connected with the combined heat and power generation system and the flue gas waste heat utilization system through pipelines for heat exchange through the heat pump, and the heat storage system is further electrically connected with the combined heat and power generation system for heat storage. The flue gas desulfurization waste heat recovery system is arranged on the tail flue of the boiler, so that the flue gas waste heat can be effectively recovered, and the coal consumption of a unit is reduced; cold energy supply can be achieved through the pump heat energy storage system, meanwhile, surplus electric energy and waste heat are converted into high-temperature heat energy to be stored in a high-temperature storage tank, the high-temperature heat energy is released when needed to generate steam, the steam is reinjected into a steam turbine thermodynamic system, the thermoelectricity operation interval is widened, the unit variable load rate is increased, and the power generation efficiency is improved. The operation regulation capability of the combined heat and power generation system is enhanced, and more flexible regulation and control means are provided.

The invention relates to the technical field of water supply devices, and discloses a water supply device control method and device, a water supply device and a storage medium, and the method comprises the steps: obtaining to-be-evaluated data in response to a scheme evaluation signal; determining a target heat storage scheme according to the to-be-evaluated data; according to the target heat storage scheme, a heat storage signal is generated, and in response to the heat storage signal, according to the target heat storage scheme, the water supply device is controlled to conduct heating so as to achieve heat energy storage; a drainage signal is obtained, and the drainage signal carries a target drainage temperature; and controlling the water supply device to discharge water corresponding to the target drainage temperature according to the actual energy storage data and / or heating power data of the water supply device. According to the target heat storage scheme, the heat storage requirements of different to-be-evaluated data can be more flexibly and accurately met, and the defect that heat storage is conducted through the fixed capacity and the fixed temperature is overcome.

An integrated underground heat storage and heat transfer system is provided for CO2-based heating and cooling installations. The invention enables both energy storage and heat exchange in a single Underground Thermal Energy Storage (UTES) system. Excess heat produced during warm weather heats the ground to relatively high temperatures, which in cool weather serves as an artificial geothermal source. A geothermal heat pump (GHP) system reclaims this heat during cool weather. When the GHP is reversed in warm weather, the rejected heat is sent to a separate loop installed in cold earth.

This invention relates to the field of low-grade thermal power generation technology, and more particularly to a Karina cycle power generation system based on an ORC working fluid pair and its application. The system includes a power generation unit with a circulating working fluid consisting of a first low-boiling-point component and a second high-boiling-point component. An external heat source is introduced into the heat exchange unit to heat the working fluid. A phase change separation unit separates the heated working fluid into a gas phase branch and a liquid phase branch. The gas phase branch is connected to a turbine expander to convert thermal energy into electrical energy. A control device acquires external heat source temperature distribution data and real-time phase change temperature data of the working fluid through a status acquisition module. A temperature difference calculation module generates heat exchange temperature difference data including temperature deviation values. A circulation control module receives the heat exchange temperature difference data and outputs flow regulation commands to a pressurized pumping unit to adjust the circulating flow rate of the working fluid, reduce the heat exchange temperature difference, and improve the thermoelectric conversion efficiency.

This invention related to a system configured to circulate a thermal fluid in a circulation loop connected to at least one flow control valve, where the system includes the thermal fluid; one or more heat exchangers; at least one flow control valve configured to redirect a thermal fluid flow to contact the heat exchanger connected to one or more thermal elements; and a controller configured to set states of the flow control valves to configure a thermal fluid path and control transfer of thermal energy from the thermal elements. This invention also related to a method for circulating a thermal fluid in a circulation loop connected to at least one flow control valve.

The utility model discloses a cement clinker bleaching device which comprises a machine body, a feeding pipe is installed at the top of the machine body and communicated with an external rotary kiln, bearings are arranged on the left side and the right side of the machine body respectively, and a first stirring shaft and a second stirring shaft are arranged on the bearings on the two sides respectively. According to the cement clinker bleaching device, the heating cavity is formed in the bleaching machine, the cold water is injected into the heating cavity, the cold water can absorb heat carried by clinker in the bleaching process, and heat can be supplied to equipment such as a boiler after the cold water absorbs heat, so that the utilization rate of waste heat of the clinker is increased, and further, the utilization rate of waste heat of the clinker is increased. After the clinker is bleached, the temperature of the clinker is still 200 DEG C or above, residual waste heat in the clinker can be recycled again through a subsequent waste heat recycling assembly, and the recycled heat energy is directly fed into a kiln opening of the rotary kiln to be used by the rotary kiln.