15 results about "Carnot cycle" patented technology

The utility model discloses a negative pressure evaporation heating system based on R32 and R718, which comprises a heating system, a refrigerating system and a pipeline system, the heating system comprises a first heat exchanger, the first heat exchanger is connected with the refrigerating system to form a circulation loop, and the pipeline system is arranged between components in the heating system and the refrigerating system. According to the negative pressure evaporation heating system based on the R32 and the R718, on the basis of a traditional reverse Carnot cycle, a condenser of a traditional air energy system and a positive pressure flash evaporation heat exchange system designed for effectively separating steam are omitted, the open type reverse Carnot cycle is adopted, and the concept of negative pressure flash evaporation is directly introduced. A condenser, a positive pressure flash evaporation heat exchange system, a capillary tube and other essential structures of a traditional closed type reverse Carnot cycle are omitted, meanwhile, a compressor is replaced with a vacuum pump, the pressure and cost of the system and the requirements for production design are reduced, and the occupied area is reduced.

The invention relates to the technical field of intelligent control and fault diagnosis of heating ventilation and air conditioning systems, in particular to a refrigeration system energy consumption optimization method based on machine learning. The method comprises the steps of ideal reference construction, virtual fault simulation, residual error projection identification and closed loop correction. The system collects real-time load and environment data, and constructs an ideal state vector based on inverse Carnot cycle; the core of the method is that a virtual fault state vector is generated by utilizing Taylor series expansion, and the projection similarity of a real-time characteristic residual error and a virtual characteristic residual error is calculated so as to accurately identify a fault; when a specific fault is identified, control parameters are automatically adjusted or an alarm is given; according to the method, the thermodynamic ideal benchmark is constructed to replace traditional historical data modeling, environment variables are effectively decoupled, the situation that equipment aging is misjudged to be normal is avoided, and the purity and accuracy of the benchmark are ensured.

The utility model relates to the technical field of negative pressure evaporation heating, and discloses a negative pressure evaporation heating system based on R718, which comprises a heat exchanger, a vacuum pump and a water inlet valve, the heat exchanger is used for exchanging heat, cooling water absorbs heat to become water vapor, the vacuum pump is used for extracting the water vapor in an inner container of the heat exchanger, and the water inlet valve is connected with the water inlet valve. According to the negative pressure evaporation heating system based on the R718, on the basis of a traditional reverse Carnot cycle, a condenser of a traditional air energy system and a positive pressure flash evaporation heat exchange system designed for effectively separating steam are omitted, the open type reverse Carnot cycle is adopted, and the negative pressure evaporation heating system based on the R718 is simple in structure, convenient to operate and high in efficiency. And the concept of negative pressure flash evaporation is directly introduced. A condenser, a positive pressure flash evaporation heat exchange system, a capillary tube and other essential structures of a traditional closed type reverse Carnot cycle are omitted, meanwhile, a compressor is replaced with a vacuum pump, the pressure and cost of the system and the requirements for production design are reduced, and the occupied area is reduced.

The invention provides a Carnot cycle peak regulation system and method coupled with a heat supply system. The Carnot cycle peak regulation system comprises a coal-fired power generation unit, a Carnot cycle peak regulation unit and a heat supply unit, and the coal-fired power generation unit is used for providing a heat source for the heat supply unit; the Carnot cycle peak regulation unit is used for providing a heat source for the heat supply unit and the coal-fired power generation unit and is used for realizing peak regulation of a point power grid; according to the invention, the Carnot cycle peak shaving unit is used for heating the circulating water of the heat supply network for the first time, so that the heating steam extraction amount is reduced, the heat supply energy consumption of the unit is reduced, the power grid peak shaving effect is achieved, and the method becomes an effective way for improving the overall operation efficiency of the thermal power generating unit.

The invention discloses a low-temperature power generation device of a Tesla turbine, belongs to the field of low-temperature power generation, and aims to generate electric energy by utilizing a wide range of low-temperature heat sources. At present, the main power of energy is fossil energy, and with the increasingly strict requirements for environmental protection and carbon emission, the ubiquitous low-temperature heat energy becomes the main attack direction of research in recent years. The Tesla turbine is invented in 1913, is particularly suitable for low-flow and low-power occasions, and is combined with a compressor and a low-temperature refrigerant, the compressor provides pressure difference required by the turbine, heat is absorbed from the environment through evaporation of the refrigerant, high-temperature and high-pressure saturated gas formed by a condenser drives the turbine to rotate so as to drive a power generator to generate power, and the power generation efficiency is improved. By means of the reverse Carnot cycle, the generated power is the sum of electric work and thermal work. The Tesla turbine is simple in structure, easy to manufacture and high in efficiency, and a large amount of heat exists in the environment, so that a continuous and stable solution is provided for increasing the endurance mileage of an electric vehicle and household small-power generation.

The invention relates to the technical field of liquid hydrogen vaporization, and discloses a high-efficiency liquid hydrogen vaporization method which comprises the following steps: monitoring the temperature, flow and pressure of liquid hydrogen in real time; a self-adaptive feedback control system is adopted, and the liquid hydrogen flow and the working state of a heat exchanger are adjusted according to monitored data; the design of the heat exchanger is optimized by utilizing the quantum thermodynamics principle; the flow state of liquid hydrogen is simulated through the computational fluid mechanics technology, and the flow path of the liquid hydrogen in the heat exchanger is optimized; a heat pump effect is introduced, heat is extracted from a low-temperature environment through a reverse Carnot cycle and is transmitted to liquid hydrogen, and the self-adaptive feedback control system processes real-time data of the temperature, the flow and the pressure of the liquid hydrogen through a fuzzy control algorithm. Through the self-adaptive feedback control system, the temperature, flow and pressure of the liquid hydrogen are monitored in real time, and the flow of the liquid hydrogen and the working state of the heat exchanger are automatically adjusted according to data, so that the effect of accurately controlling the vaporization process of the liquid hydrogen is achieved.

The application discloses a kind of high-efficiency power generation devices of air-breathing hypersonic aircraft, including being arranged in the reformer of air-breathing hypersonic aircraft and SOFC system, air inlet hole is equipped on the wall of inlet duct, and air inlet hole is communicated with the oxidant inlet of SOFC system;Supersonic combustion chamber is equipped with fuel inlet hole and fuel outlet hole on the wall, fuel inlet hole is connected with the air inlet end of reformer, the air outlet end of reformer is communicated with the fuel inlet of SOFC system, and the product outlet of SOFC system is communicated with fuel outlet hole.The application is applied to the field of aerospace energy generation technology, chemical energy is directly converted into electric energy by electrochemical reaction process using the feature that SOFC does not need to take force, not limited by Carnot cycle, thereby improve energy conversion efficiency, not only reduce pollutant emission, but also meet the demand of high electric power ratio and long time online power supply flight task, can be effectively applied to air-breathing hypersonic aircraft.

The invention discloses a double-working-medium circulating power system and a control method thereof. The power system is composed of an air liquefaction circulating system, a power circulating system, a heat pump system, an automatic controller, a first cold box and a second cold box. The air liquefaction circulating system consists of an air filter, an air compressor, a molecular sieve exchanger, a countercurrent heat exchanger and a first liquid storage tank; the hydrogen working medium power circulation system is composed of a second liquid storage tank, a liquid pump, a heat exchanger and an air cylinder expansion machine. The heat pump system is composed of an air compressor, a refrigeration expansion machine, an evaporator and a condenser. And the automatic controller is used for controlling the power system. The heat engine efficiency of an existing Carnot cycle is less than 50%, and according to the double-working-medium cycle power system, the temperature of a low-temperature heat source of the Carnot cycle is reduced to-192 DEG C from the environment temperature, heat sources at the environment temperature or above can become high-temperature heat sources of the Carnot cycle, environment energy can be developed conveniently, and zero-carbon, distributed, free and free energy sources can be obtained.

The invention discloses a heat pump and solar energy coupled marine ranch culture hotbed device. The invention relates to the technical field of marine ranch culture hotbeds. The system comprises a culture pond 4, a hotbed pipe assembly 3 mounted in the culture pond 4, a heat source assembly 1 for inputting heat energy to the hotbed pipe assembly 3, and a relay assembly 2 for providing a flowing medium for transferring the heat energy, the hotbed pipe assembly 3 is spirally arranged in the culture pond 4 in a rectangular-ambulatory-plane shape. Efficient photo-thermal conversion of the solar heat collector is achieved through a parabolic reflector and a selective absorbing coating, conversion from low-grade heat energy to high-grade heat energy is achieved through the heat pump unit through reverse Carnot cycle, and intelligent distribution of heat energy flow is achieved through a three-way proportional regulating valve. The relay assembly adopts a closed circulation system structure, a liquid tank reduces heat loss through a double-layer heat preservation structure, a spiral spoiler is arranged in a circulating water pipe to enhance turbulent flow heat exchange, flowing media are dynamically matched according to environmental conditions (such as freezing prevention of ethylene glycol water solution and high temperature resistance of heat conduction oil), and the heat energy transmission efficiency is ensured.

The invention discloses a vacuum heat insulation efficient energy utilization device for simulating combustion membrane catalytic reversible reaction and light surging coupling, and belongs to the technical field of efficient energy conversion. The device is of a concentric / coaxial nested totally-closed structure and is sequentially provided with a core membrane catalytic reversible reaction layer, a light surge driving layer, a first-stage vacuum heat insulating layer, a total energy recovery layer, a total reflection radiation shielding layer, a second-stage vacuum sealing layer, a matched wavelength adjustable light incident window, an ion / product selective separation membrane and an energy output interface from inside to outside. The core membrane catalyst layer divides traditional combustion into three-step reversible element reaction, the light surge driving layer achieves directional driving through photon excitation photon-generated carriers and local photo-thermal, the double-layer vacuum heat insulation layer is matched with the high-reflection shielding layer to achieve heat conduction, convection and radiation triple loss blocking, the total energy recovery layer conducts reverse conversion on trace leakage energy and conducts backflow, and the total energy recovery layer is matched with the high-reflection shielding layer. And energy closed loop is realized. The device breaks the Carnot cycle limitation, has the theoretical energy utilization efficiency of 100%, the engineering actual efficiency of more than or equal to 99.9%, is flame-free in reaction, zero in pollutant emission, flexible in energy output form, compact in structure and high in environmental adaptability, can be widely applied to aerospace propulsion, aviation power, micro-nano energy chips, distributed power generation and other scenes, and has wide application prospects. And the method has obvious energy utilization value and industrial application prospect.

The utility model discloses a negative pressure evaporation heating system based on R410A and R718, which comprises a heating system, a refrigerating system and a pipeline system, the heating system comprises a first heat exchanger, the first heat exchanger is connected with the refrigerating system to form a circulation loop, and the pipeline system is arranged between components in the heating system and the refrigerating system. According to the negative pressure evaporation heating system based on the R410A and the R718, on the basis of a traditional reverse Carnot cycle, a condenser of a traditional air energy system and a positive pressure flash evaporation heat exchange system designed for effectively separating steam are omitted, the open type reverse Carnot cycle is adopted, and the concept of negative pressure flash evaporation is directly introduced. A condenser, a positive pressure flash evaporation heat exchange system, a capillary tube and other essential structures of a traditional closed type reverse Carnot cycle are omitted, meanwhile, a compressor is replaced with a vacuum pump, the pressure and cost of the system and the requirements for production design are reduced, and the occupied area is reduced.

The utility model relates to low temperature air energy drying machine, including drying machine main part, the inner bottom of drying machine main part is provided with heat pump heating circulation mechanism. This low temperature air energy drying machine, through setting heat pump heating circulation mechanism, first refrigerant evaporates in evaporimeter, becomes low temperature low pressure gaseous refrigerant, then compressor does work to gaseous refrigerant, becomes high temperature high pressure gaseous refrigerant, and at the same time high temperature high pressure refrigerant enters condenser, releases heat to drying cavity, and condenses as high pressure liquid refrigerant simultaneously, finally liquid refrigerant throttles through expansion valve, and pressure and temperature drop suddenly, become low temperature low pressure liquid refrigerant, enter evaporimeter again, complete a cycle, and above all, the mechanism mechanism realizes efficient heat transfer through "reversed Carnot cycle", and it is superior to traditional heating mode in energy saving, environmental protection, temperature control precision, system reliability and so on, and its practicality is stronger.

The present invention discloses an expansion engine that, by means of a cycle similar to the Carnot cycle, converts thermal energy in general, and solar energy in particular, so as to transform the heat from a hot source and a cold source into mechanical work and subsequently into electrical energy. There is no economically viable means in the prior art for converting heat resulting from small temperature differences into work. This applies both to systems based on the Rankine cycle and to those based on the Stirling cycle. The present invention generates useful energy from an inexhaustible source such as the sun, using an abundant resource such as water, in a closed circuit. When applied to the utilization of solar energy, the expansion engine has the notable advantage of using virtually the entire spectrum of solar radiation, from infrared and visible light to ultraviolet, and not just a fraction of the visible spectrum, as is the case with photovoltaic panels. The invention is aimed at the production of energy from vast heat sources resulting from small temperature differences, such as those available in geothermal sources, from the temperature difference between surface water and deep-sea water, or from water heated by solar thermal radiation. The present invention enables the production of energy at the required locations and in the required amounts, thereby eliminating the need for electrical distribution networks. The present invention encompasses a system for storing large amounts of energy.

A Carnot cycle battery energy storage system based on supercritical carbon dioxide comprises a heat pump cycle, a heat engine cycle, a high-temperature heat storage system, a low-temperature heat storage system and a working medium supplementing and adjusting system. During energy storage, the heat pump cycle converts electric energy into temperature difference potential energy, and heat in the low-temperature heat source is pumped to the high-temperature heat source; the high-temperature heat storage system is used for storing heat transferred from the heat pump cycle; the low-temperature heat storage system releases the stored low-temperature heat to the heat pump cycle; during energy release, the heat engine cycle converts temperature difference potential energy into electric energy, absorbs heat from the high-temperature heat source and then releases the heat to the low-temperature heat source; the high-temperature heat storage system releases the stored high-temperature heat to the heat pump cycle; the low-temperature heat storage system is used for storing heat released by the heat pump cycle; the working medium supplement adjusting system is used for maintaining stable pressure and flow of the carbon dioxide working medium in the system operation process. In the working temperature difference range of 600 DEG C, the system can achieve high circulation efficiency.

The present application relates to HVAC system intelligent control and fault diagnosis technical field, specifically to a kind of refrigeration system energy consumption optimization method based on machine learning;Contain ideal benchmark construction, virtual fault simulation, residual projection identification and closed-loop correction steps;System is through the collection real-time load and environmental data, based on inverse Carnot cycle constructs ideal state vector;Its core is to generate virtual fault state vector using Taylor series expansion, calculate the projection similarity of real-time characteristic residual and virtual characteristic residual, to accurately identify fault;When identifying specific fault, automatically adjust control parameters or alarm;The present application constructs thermodynamic ideal benchmark to replace traditional historical data modeling, effectively decouples environmental variables, avoids misjudging equipment aging as normal, ensures the purity and accuracy of benchmark.