788results about "Machines using waste heat" patented technology

A system includes a first subsystem configured to produce a resource by consuming electricity, a second subsystem configured to produce the resource by consuming a fuel, and a controller. The controller is configured to determine an allocation of a predicted demand for the resource over a future time period between the first subsystem and the second subsystem based on a first carbon emissions rate associated with off-site production of the electricity and a second carbon emissions rate associated with on-site consumption of the fuel. The controller is also configured to control the first subsystem and the second subsystem to produce the resource in accordance with the allocation during the future time period.

A refrigeration cycle device includes: a compressor; a heat radiating unit that causes refrigerant to heat air supplied to a space inside a vehicle cabin; a decompression unit that decompresses the refrigerant; an outside air heat absorbing unit that causes the refrigerant to absorb heat from outside air; a waste heat absorbing unit that causes the refrigerant to absorb waste heat of a waste heat device; a shutter that opens and closes a passage for the outside air introduced into the outside air heat absorbing unit; and a control unit that closes the shutter when it is determined that an amount of waste heat of the waste heat device is larger than an amount of heat absorbed by the refrigerant in the outside air heat absorbing unit and the waste heat absorbing unit.

The utility model provides a crude methanol cascade heat pump energy-saving device which comprises a pre-rectifying tower and a normal pressure rectifying tower which are connected in sequence, the bottom of the pre-rectifying tower is connected with a pre-tower reboiler, the normal pressure rectifying tower is connected with N normal pressure tower reboilers, the top of the pre-rectifying tower is connected with a pre-tower heat pump, the pre-tower heat pump is connected with the pre-tower reboiler, and the N normal pressure tower reboilers are connected with N normal pressure tower reboilers. The pre-tower reboiler is connected with a pre-tower reflux device, the top of the normal-pressure rectifying tower is connected with M normal-pressure tower heat pumps, M is equal to N, and M and N are greater than or equal to 2; the atmospheric tower heat pumps are respectively connected with atmospheric tower reboilers, and the N atmospheric tower reboilers are all connected with a refined methanol extraction device; according to the invention, the traditional methanol rectification process is changed, the tower is supplied with heat in a stepped manner through a steam direct compression type heat pump energy-saving technology at the top of the normal-pressure rectification tower, efficient stepped recovery of waste heat energy at the top of the normal-pressure rectification tower is facilitated, production operation is facilitated, and energy consumption is reduced.

The invention provides a system and method for improving the ability of activated carbon to adsorb medium and low temperature VOCs waste gas, and the system comprises: a heat exchanger for introducing steam heat of the medium and low temperature VOCs waste gas to perform waste heat recovery to generate high temperature circulating water; the refrigerating system is used for receiving the high-temperature circulating water through a pipeline and recovering heat of the high-temperature circulating water to enable the refrigerating system to generate a refrigerant, and the refrigerant enters the heat exchanger to exchange heat with the medium-low-temperature VOCs waste gas; the activated carbon fixed bed adsorption device is used for receiving the medium and low temperature VOCs waste gas after heat exchange and adsorbing organic gas in the waste gas; the steam thermal desorption device is used for introducing steam into the activated carbon fixed bed adsorption device for desorption after the activated carbon fixed bed adsorption device is saturated in adsorption, and the steam takes away the organic gas adsorbed by the activated carbon fixed bed adsorption device and enters a downstream phase change heat exchanger; and the phase change heat exchanger is used for recycling steam heat after analysis by using circulating water to generate high-temperature circulating water, and after heat is recycled, waste gas is condensed, so that organic gas is dissolved in water to form an organic solvent to be recycled.

The utility model provides a peak-shaving steam supply system for deep waste heat utilization of a thermoelectric unit, which deeply recovers cold end waste heat and flue gas waste heat of a cogeneration unit, is coupled with a two-stage compression heat pump, extracts waste heat to heat demineralized water, and serves as a primary heat source for supplying industrial steam, so that the waste heat participates in external heat supply; the superheater utilizes the generating capacity of the unit to enable industrial steam to reach steam supply parameters, the waste heat of the unit and the generating capacity are combined for external steam supply, the circulating heat efficiency is improved, the steam supply capacity is improved, meanwhile, the on-grid electricity is reduced, thermoelectric decoupling is achieved, the unit adjusting operation interval is expanded, the operation cost and pollutant emission are reduced, and peak regulation or spot transaction earnings are improved. And a clean, low-carbon, flexible, efficient, economical and energy-saving combined heat and power generation system is constructed.

The invention discloses a compressed air energy storage underground chamber waste heat and waste cold utilization system which comprises a chamber structure, an inflation and deflation mechanism, a heat exchange mechanism and an energy recycling mechanism, a closed air storage cavity is formed in the chamber structure, and an air inlet and outlet communicated with the air storage cavity is formed in the chamber structure; the inflating and deflating mechanism comprises an air pipe; the heat exchange mechanism comprises a liquid storage tank and a heat exchange assembly, and heat conduction liquid is contained in the liquid storage tank. The device has the beneficial effects that through the uniform air distribution design of the air pipes, the uniformity of the inflation and deflation process is ensured, and the risk of concrete lining cracking caused by local temperature difference is reduced. Through cooperative work of the heat exchange mechanism and the energy recycling mechanism, waste heat generated in the inflation process and waste cold generated in the deflation process are effectively recycled and utilized, so that on one hand, energy waste is reduced, the overall energy efficiency of the system is improved, and on the other hand, the energy storage potential of the chamber can be improved.

The utility model relates to the technical field of acid pickling waste liquid resourceful treatment and regeneration, in particular to a tail gas waste heat utilization system of a mixed acid waste liquid treatment system, which is used for treating mixed acid waste liquid and discharging high-temperature tail gas and comprises a first heat exchanger, a second heat exchanger and a refrigerating mechanism. A first heat exchange circulating water path is arranged between the first heat exchanger and the refrigerating mechanism; the first heat exchanger provides a heat source for the refrigerating mechanism by using tail gas heat and reduces the water temperature of the first heat exchange circulating water path by means of the refrigerating mechanism; a second heat exchange circulating water path is arranged between the second heat exchanger and the refrigerating mechanism. The second heat exchanger is further connected to a circulating pipeline of the mixed acid waste liquid treatment system so as to reduce the temperature of circulating liquid. Through the tail gas waste heat utilization system, flue gas waste heat of the mixed acid waste liquid treatment system is effectively recycled, and energy waste is reduced; and the second heat exchanger reduces the circulating liquid temperature of the mixed acid waste liquid treatment system and improves the oxidation efficiency of the flue gas.

The invention discloses a waste heat recovery strategy analysis method and related equipment, and the method comprises the steps: firstly obtaining the flow and inlet temperature of each waste heat medium, and calculating the theoretical waste heat recovery power hour by hour in combination with environmental parameters and discharge temperature limitation; an energy conversion model is established based on the power and the equipment performance parameters, and a cascade framework is constructed according to the waste heat grade; and finally, by taking system energy efficiency maximization as a target, establishing an optimization model containing multiple types of constraints for solution, and obtaining an optimal equipment configuration and operation strategy. According to the cascade structure, efficient matching of waste heat and equipment is achieved, and recycling waste caused by mismatching is avoided; variable heat utilization requirements can be dynamically responded through hourly calculation and load constraint, and accurate space-time matching of waste heat and the requirements is achieved; the multi-constraint model enhances the multi-target optimization capability and makes up for the optimization deficiency in the prior art; the system planning process solves the problem of systematicness shortage of an existing method, the waste heat potential is effectively excavated, and the efficiency of the waste heat utilization comprehensive energy system is improved.

The invention discloses a multi-combined supply system and method integrating Carnot cell energy storage and liquid hydrogen cold energy. The multi-combined supply system comprises a vapor compression refrigeration cycle charging system, a Rankine cycle discharging system, a low-temperature energy storage system, a high-temperature energy storage system, a liquid hydrogen cold energy utilization system, a fuel cell waste heat utilization system and a liquid hydrogen pipeline. The charging system comprises a first compressor, a first condenser, a second compressor, a second condenser, a first throttle valve and a first evaporator which are sequentially communicated and circulated; the high-temperature heat storage tank and the low-temperature heat storage tank of the high-temperature energy storage system exchange heat with the discharge system through the second evaporator and the third evaporator; a high-temperature cold storage tank and a low-temperature cold storage tank of the low-temperature energy storage system exchange heat with the charging system and the discharging system through a first evaporator and a third condenser respectively; the liquid hydrogen cold energy utilization system achieves the liquid hydrogen gasification cold energy power generation process. The efficient comprehensive energy system is constructed by using liquid hydrogen cold energy and fuel cell waste heat.

The invention relates to the technical field of liquid air energy storage, in particular to a high-heat-storage-density liquid air energy storage system and method.The system comprises an air compression unit, an air liquefaction unit, a liquid air gasification unit, a cold storage unit, a heat storage unit and an air expansion power generation unit; the first input end of the air compression unit is used for inputting ambient air, the second input end of the air compression unit is used for inputting electric power, the first output end of the air compression unit is connected with the first input end of the air liquefaction unit, and the second output end of the air compression unit is connected with the first input end of the heat storage unit. The third input end of the air compression unit is connected with the first output end of the heat storage unit. By optimizing the heat storage density and the compression heat utilization and combining the cascade heat utilization and refrigeration technology, the circulation efficiency and the power generation performance of the liquid air energy storage system are improved, and a more efficient solution is provided for practical application of the liquid air energy storage technology.

The invention provides a heat supply method and system utilizing waste heat resources and a control device, and relates to the field of heat exchange. According to the heat utilization required temperature and the grade and temperature of the waste heat return water, when the waste heat return water does not meet the heat utilization required temperature, the heat pump unit is started to heat the waste heat return water and then provide the waste heat return water for heat utilization equipment for use, and water flow on the evaporation side of the heat pump unit exchanges heat with dead steam; therefore, various waste heat resources of different grades and different forms are cooperatively utilized, and the utilization efficiency of energy is improved.

The invention discloses a green data center key cooling system, and relates to the technical field of data center energy saving and heat management. The system comprises a cabinet, a cold and hot channel, a refrigeration device, a waste heat recovery device and a control system. The refrigeration device comprises an indoor refrigeration unit, an outdoor heat dissipation unit and a fluorine pump energy-saving unit, and heat exchange and cooperative operation are achieved through pipelines. The cold and hot channel is provided with a guide plate and an adjustable air valve to optimize airflow distribution; the waste heat recovery device comprises a fluorine-fluorine heat exchanger, a heat pump system and a circulating medium box, and recovery and reutilization of heat energy are achieved. The control system integrates a lightweight edge AI module, constructs a multi-stage temperature sensing and load prediction mechanism, dynamically adjusts the power output of each cooling unit, and supports redundant fault-tolerant switching. The system intelligently switches the operation modes of the fluorine pump and the heat dissipation unit based on the external temperature and the thermal load prediction result, energy consumption is effectively reduced, and the energy efficiency ratio is increased.

The utility model discloses a waste heat recovery system. The waste heat recovery system comprises an indirect evaporative cooling unit and a heat recovery assembly, the indirect evaporative cooling unit comprises an air-air heat exchanger and a liquid cooling assembly which are arranged in a to-be-cooled chamber, and an evaporator coil of the liquid cooling assembly is adjacent to the air-air heat exchanger; the heat recovery assembly comprises a heat recovery coil pipe, a recovery water circulating pump, a heat recovery water supply pipe and a heat recovery water return pipe, the heat recovery coil pipe is arranged indoors and can exchange heat with the condenser coil pipe, one end of the heat recovery water supply pipe is communicated with the water inlet end of the heat recovery coil pipe, and one end of the heat recovery water return pipe is connected with the water outlet end of the heat recovery coil pipe; the recycled water circulating pump is used for providing power for flowing of water in the heat recycling water supply pipe, the heat recycling coil pipe and the heat recycling water return pipe. According to the waste heat recovery system, heat in the indirect evaporative cooling unit can be recycled, the temperature of water in the heat recovery coil pipe is increased through the recycled heat, and waste of the heat is avoided.

A gas-fired heat pump unit that directly utilizes engine waste heat and features adjustable air supply is disclosed. The condenser and water supply and return lines are combined with refrigerant and coolant heat exchange lines. Refrigerant flows from the quasi-two-stage compressor outlet through the refrigerant heat exchange line, dividing it into a main path and an auxiliary path. The auxiliary path connects to the quasi-two-stage compressor air supply port after passing through a first electronic expansion valve and a flue gas heat exchanger. The main path, switched by a four-way reversing valve, can control forward and reverse circulation between the second electronic expansion valve and the outdoor evaporator. The outlet is connected to the quasi-two-stage compressor inlet. Coolant flows from the gas engine outlet through a coolant circulation pump and the coolant heat exchange line back to the inlet. The gas engine exhaust port is connected to the flue gas heat exchanger. Compressor air supply is simple and highly adjustable. The condenser utilizes stepped heating to decouple engine waste heat from compressor power. Heating is continuous during reverse cycle defrosting, improving indoor thermal comfort.

The multi-stage steam extraction heat supply system comprises a steam extraction injection device, a steam circulation device and a supply device, the steam extraction injection device communicates with the steam circulation device, and the steam circulation device communicates with the supply device. The steam extraction injection device comprises multiple stages of steam extraction branches, and the pressures of steam introduced into all the stages of steam extraction branches are different. The injection unit communicates with the multiple stages of steam extraction branches and is used for mixing the steam with different pressures provided by the multiple stages of steam extraction branches and then providing the mixed steam to the steam circulating device; the steam circulating device is used for constructing a steam circulating loop by utilizing the mixed steam; the supply device is used for supplying heat energy generated by the steam circulation loop to the outside. And due to the design of multi-stage steam extraction and injection, the system can flexibly select a steam source according to the external load requirement, rapid response and efficient energy conversion are achieved, the adjusting capacity of the system under the variable load condition is improved, and the energy utilization rate and the adaptability of the system are improved.

The invention discloses a double-storage and three-supply carbon dioxide energy storage refrigeration system, and belongs to the technical field of heat dissipation and cooling of data centers. The invention discloses a double-storage and three-supply carbon dioxide energy storage refrigerating system, which is characterized in that a ground source heat pump energy storage loop stores heat energy of a data center and energy stored by a cold storage ice making loop during ice making at the low ebb of electricity price; the third supply means that a data center cooling loop of the system foundation is used for cooling and cooling the data center, a cold storage ice-making loop is used for cooling and cooling the data center at the peak of the electricity price, and a ground source heat pump energy storage loop is used for cooling the data center; the cold supply cost of the system is reduced by storing energy at the electricity price low ebb and energy at the electricity price peak, waste heat is recycled through the ground source heat pump energy storage loop, and the recycled energy is used for cooling the data center, so that the energy consumption of the system is reduced. The defects that an existing data center cooling system is high in energy consumption and high in cost are overcome.

The present application relates to the field of waste heat recovery. Disclosed is a plant factory temperature regulation and control system based on waste heat recovery. The system comprises at least one heat providing area, which is used for providing a heat source, and at least one plant factory, wherein the heat providing area is connected to an evaporator I; a refrigerant is provided in the evaporator I to absorb waste heat of the heat providing area; an outlet of the evaporator I is connected to a compressor, an outlet of the compressor is connected to a condenser I, and a liquid outlet of the condenser I is connected to the evaporator I, thus implementing circulation of the refrigerant; and an air outlet of the condenser I is connected to a heat supply pipeline of the plant factory. In the present application, with regard to the problem of stable waste heat of the heat providing area such as a data center being greatly wasted while winter heating and summer cooling in the plant factory still consume a lot of energy, the waste heat of the data center can be recovered to heat the plant factory in the winter, and heat in the plant factory and the waste heat of the data center can be absorbed and supplied to surrounding buildings in the summer.

The invention relates to a system for thermal recovery from gaseous effluents operating in an open cycle, using said gaseous effluents as a working fluid and comprising a compression section, comprising at least one compressor (11) preferably driven by an electric motor (10), said compressor sucking gaseous effluents from a stream of hot residual gases and compressing the same effluents with consequent rise in temperature of said compressed gaseous effluents, a heat transfer section, comprising a secondary heat recovery circuit and a heat exchanger (13) for the thermal transfer to a carrier fluid (7), circulating in said secondary circuit, of thermal energy taken from said compressed gaseous effluents and for the consequent cooling of the same, an expansion section, comprising at least one expander (14) for a further recovery of energy released by expansion and converted into mechanical or electrical form after cooling by said heat exchanger (13), a discharge section (60) for the discharge of at least part of said gaseous effluents. The invention also has as its object a method of recovering part of the energy contained in the form of heat in gaseous effluents through a plant operating in an open cycle.

The invention relates to a heat pump device that makes it possible to utilize waste heat from technical processes or from the environment to simultaneously generate useful steam (12) and useful heat. The heat pump device comprises a heat pump module (1), a low-pressure steam generator (2) for generating low-pressure steam (11), a steam jet compressor (3) for generating useful steam (12) from high-pressure steam (10) and the low-pressure steam (11), and a first heat exchanger (4) for providing the useful heat. The heat pump device is suitable for applications where there is a simultaneous demand for both steam and heat.

The utility model relates to a solar energy and biomass energy coupled combined heat and power generation system which comprises an air preheater, a biomass boiler, a PV / T, a solar vacuum tube collector, a first-stage organic Rankine cycle assembly, a second-stage organic Rankine cycle assembly and a jet type refrigeration cycle assembly. A fluid outlet of the PV / T is connected with a fluid inlet of the solar vacuum tube collector, a smoke outlet of the biomass boiler is connected with a hot fluid inlet of the air preheater, and a cold fluid outlet of the air preheater is connected with an air inlet of the biomass boiler. According to the utility model, by designing a two-stage organic Rankine cycle structure, solar energy and biomass energy are better coupled, and the stability of the system is improved.

The invention relates to a boiler flue gas heat recovery system which comprises a heat supply device, the heat supply device comprises a boiler and a heat supply pipeline, the heat supply pipeline comprises a boiler water inlet pipe and a boiler water outlet pipe which communicate with the boiler, a flue is formed in a smoke exhaust device, and a first heat exchanger and a second heat exchanger are sequentially arranged in the flue in the flue gas flowing direction; the first waste heat recovery device comprises a first waste heat recovery flow path and a heat pump, the first waste heat recovery flow path is connected with the first heat exchanger and a boiler water inlet pipe, the heat pump is arranged on the first waste heat recovery flow path, the second waste heat recovery device comprises a second waste heat recovery flow path, and the second waste heat recovery flow path communicates with external air and a boiler. By arranging the heat pump, on one hand, the heat transfer temperature difference can be increased, smoke sensible heat and even part of latent heat can be efficiently recycled, on the other hand, the recycled heat can be flexibly adjusted according to changes of boiler loads, and therefore the system can adapt to changes of loads output by the system under different conditions.

To provide an ejector-type cooling device capable of further lowering a temperature of output hot water.SOLUTION: An ejector-type cooling device 10A includes: a condenser 18 for condensing a refrigerant; a refrigerant pump 12 for circulating the condensed refrigerant; a steam generator 14 to which the refrigerant is supplied to exchange heat with hot water to generate steam; an evaporator 20 connected so that the hot water flows in series at a downstream side with respect to the steam generator 14, and the refrigerant is supplied from a branch portion B1 between the condenser 18 and the refrigerant pump 12 through an expansion valve 22 to exchange heat with the hot water to be evaporated; an ejector 16 connected so that the refrigerant evaporated in the steam generator 14 is supplied to a drive flow port 16a and supplied to the condenser 18 from a discharge port 16b, and further the refrigerant supplied from the evaporator 20 is sucked from a suction port 16c; and an auxiliary heat exchanger 24 for cooling the hot water between the steam generator 14 and the evaporator 20 connected in series.SELECTED DRAWING: Figure 2

The invention discloses a wet flue gas heat exchange system for a thermal power plant boiler, and relates to the technical field of thermal power plant energy conservation and emission reduction, the system comprises a desulfurization tower, a flue gas heat exchange device, a chimney, a sensing layer, a decision-making layer and an execution layer, the sensing layer collects smoke, environment, working medium and equipment all-parameter data and preprocesses the data into a state data queue, the decision-making layer predicts the future state of the system through a long-short-term memory network model and generates an optimal control strategy in combination with a dynamic matrix control algorithm, and the execution layer adjusts actions of components such as graded spraying and a variable-frequency heat pump. And meanwhile, the system adapts to working condition changes depending on a closed-loop self-learning mechanism, self-adaptive response to variable working conditions can be achieved, waste heat recovery and energy consumption are optimized while the white elimination effect is guaranteed, the net energy consumption of the system is reduced, and the system is suitable for thermal power plant boiler flue gas treatment.

The utility model belongs to the technical field of heat exchange equipment, and particularly relates to a carbon dioxide capture waste heat recovery system based on an absorption heat pump, which comprises an absorption tower, a regeneration tower, a reboiler, a heat exchanger, a cooler and the absorption heat pump, and the absorption heat pump consists of an evaporator, an absorber, a regenerator, a condenser, a flash tank, a steam control valve and a water replenishing control valve. According to the absorption heat pump, high-temperature regenerated gas generated by the regeneration tower is used as a driving heat source of the evaporator and the regenerator, higher-grade hot water is prepared in the absorber, high-temperature steam and high-pressure steam are prepared in the flash tank and conveyed to the reboiler, heat of the regenerated gas is effectively recycled, industrial waste heat is recycled, and the energy consumption is reduced. The steam consumption is reduced, the energy consumption of the carbon capture system is effectively reduced, and the efficiency of the carbon capture system is improved.

The utility model relates to the field of recycling devices, in particular to a carbon emission preheating recycling device which comprises a box shell, a water outlet groove and an exhaust groove, the water outlet groove is formed in the front side of the box shell, the exhaust groove is formed in the right side of the box shell, an air suction device sucks carbon emission gas, the carbon emission gas is fed into an air filter through a third air feeding pipe, and dust and sand in the gas are removed; a motor drives a rotor in a compression main machine to rotate, gas fed by an air filter is mixed with engine oil, a large amount of heat is generated, gas steam is formed and discharged, high-temperature oil and gas are conveyed to an oil-gas separation barrel for oil-gas separation, and treated high-temperature and high-pressure gas is conveyed to a cooling device. And the hot water is conveyed to a hot water storage tank, is discharged through a water outlet pipe, and is conveyed to a warm air blower through a second water conveying pipe to form warm air on the other hand.

The invention provides a multi-mode combined cooling and power generation system based on efficient waste heat utilization and an operation method of the multi-mode combined cooling and power generation system. The multi-mode combined cooling and power generation system comprises an organic Rankine cycle and absorption type refrigeration cycle integrated low-grade cold energy production mode and an organic Rankine cycle and vapor compression type refrigeration cycle integrated medium-grade cold energy production mode. A high-grade cold energy production mode integrating organic Rankine cycle, absorption type refrigeration cycle and vapor compression type refrigeration cycle is adopted, in order to achieve gradient utilization of waste heat, the system considers the waste heat utilization sequence of thermodynamic cycle at the same time, and the waste heat is firstly utilized by the absorption type refrigeration cycle and then recovered by the organic Rankine cycle; waste heat is recycled through the organic Rankine cycle and then is utilized by the absorption type refrigeration cycle, and the waste heat is simultaneously recycled by the absorption type refrigeration cycle and the organic Rankine cycle after being shunted. Efficient cogeneration of cold electricity is achieved through gradient utilization of waste heat and heat-work coupling between circulation, multiple possibilities of a waste heat utilization path are considered, and the waste heat recovery rate is increased.

The invention provides a compound evaporator coupled with multiple heat sources, and a heat pump system thereof. The use efficiency of a heat pump and the energy utilization rate are improved while the coupled use of the multiple heat sources is achieved; meanwhile, flue gas waste heat can be recycled, and purification is achieved; and the side of the evaporator is prevented from being frosted effectively. The compound evaporator comprises a shell, and flanges arranged at the two ends of the shell; the shell comprises an outer shell and an inner shell; a spiral refrigerant flow channel is arranged in a clearance between the outer shell and the inner shell; an inside cavity of the inner shell forms a coupled working medium flow channel, and the two ends of the inner shell are provided witha coupled working medium inlet and a coupled working medium outlet separately; the outer side of the outer shell is provided with a plurality of flue gas cooling fins, and a flue gas channel used forheat exchange is formed between the adjacent flue gas cooling fins; and the two ends of the outer shell are separately provided with a refrigerant inlet and a refrigerant outlet which communicate withthe refrigerant flow channel.

The invention discloses a magnetic suspension centrifugal heat pump heat recovery system applied to tea beverage making, which comprises a hot water tank, a first heating unit, an extraction hot side, a first cooling unit, a blending water side, a heat recovery pipeline and a high-temperature heat pump unit which are connected in sequence, the high-temperature heat pump unit is provided with a high-temperature heat absorption side, a high-temperature heat release side and a high-temperature magnetic suspension centrifugal compressor, the hot water tank is provided with a water outlet pipeline, and the water outlet pipeline is connected between the first heating unit and the extraction hot side after passing through the second heat exchanger. Hot water obtained after the extraction process is led through the heat recovery pipeline, waste heat of the hot water is recovered through the high-temperature heat pump unit, work is applied through the high-temperature magnetic suspension centrifugal compressor, heat energy generated by the waste heat and work is transmitted to the front end of the extraction process, and meanwhile water in the heat recovery pipeline is subjected to heat absorption cooling or cooling to be used for the blending process. And heat energy recycling is achieved, and the comprehensive energy utilization rate is greatly increased.

The invention discloses a digital twin heat pump heat recovery control method and system for a tea beverage process. The method comprises the following steps: establishing a physical model and an energy transfer model based on each key unit parameter of a heat recovery system in a tea beverage process, and constructing a corresponding digital twin platform; sensors are installed on key units of a heat recovery system in the tea beverage technology, and operation state data are collected and uploaded to a digital twin platform; performing online simulation and prediction on real-time data by using a digital twin model; based on a model predictive control algorithm and self-adaptive adjustment, optimally controlling operation parameters of a heat pump unit, a medium flow rate, a heat exchanger state and starting and stopping of an auxiliary heating / cooling unit, and achieving control targets of maximum recovery of waste heat and precise satisfaction of a process temperature; and the optimized control instruction is fed back to the field control unit to realize closed-loop regulation and control. Refined and intelligent control over the heat recovery process of the heat pump in the tea beverage technology is achieved, the waste heat utilization rate and the system energy efficiency are greatly improved, and the operation cost is reduced.

The utility model relates to the technical field of energy conservation and emission reduction, in particular to a waste heat refrigerating system suitable for dynamically synthesizing green ammonia. A synthetic ammonia reaction system; a waste heat boiler; cooling the condenser system; a product recovery system; a waste heat refrigerating unit; and the connection relationship among the systems is limited. According to the waste heat refrigerating system suitable for dynamically synthesizing the green ammonia, the low-pressure steam waste heat refrigerating technology can be utilized, direct conversion between the cold end and the hot end is completed, coupling between fluctuating steam yield and fluctuating cold demand is achieved, and meanwhile the concept and the production principle of green hydrogen and green ammonia are met.