4 results about "Transcritical cycle" patented technology

The application provides a kind of carbon dioxide new energy vehicle heat pump system based on ejector circuit, relating to new energy automobile air conditioning technical field, including circulation module, for relying on CO2 transcritical cycle characteristics;Power and heat exchange module, for compressing low-temperature and low-pressure carbon dioxide refrigerant into high-temperature and high-pressure state;Loop control and ejection enhancement module, for controlling the flow direction and state of refrigerant;Gas-liquid separation and oil return module, for receiving gas-liquid mixed refrigerant from the ejector through the gas-liquid separator, realizing gas-liquid separation through gravity settling, and realizing oil return through oil return pipeline;State detection and repair module, for real-time acquisition of operating parameters of key nodes of the system, and intelligent repair using fault strategy library.

This application discloses a highly integrated thermal management method using R744 refrigerant, relating to the field of thermal management technology. The method includes the following steps: constructing a transcritical circulation loop based on R744 refrigerant, and sequentially arranging a compressor, gas cooler, gas-liquid separator, and high-pressure plate heat exchanger within the transcritical circulation loop; simultaneously configuring a power battery water circulation loop, an air conditioning water circulation loop, and an electric drive waste heat recovery loop; and forming a multi-loop switchable fluid path structure through a four-way valve, a three-way proportional valve, and multiple water pumps; utilizing the high-pressure plate heat exchanger as a multi-loop heat exchange node. This application achieves priority heat distribution across multiple loops through valve control, ensuring stable heat dissipation of the electric drive system at high temperatures and improving heating capacity and battery performance at low temperatures; simultaneously, it improves structural compactness and reliability through modular water circuit design, and utilizes waste heat to reduce energy consumption and refrigerant usage, thereby improving overall vehicle efficiency and safety.

The application relates to the field of compressor control, in particular to a two-stage air-supply enthalpy-increasing compressor control method based on a carbon dioxide transcritical cycle. The method comprises the following steps: acquiring a set of real-time running state information of a vehicle, based on which, multi-dimensional system state representation and optimal target fusion analysis are carried out to generate a dynamic optimal exhaust pressure target value; based on the dynamic optimal exhaust pressure target value, dynamic coupling and decoupling of a main control channel and an auxiliary control channel and collaborative instruction distribution are carried out to generate a set of collaborative control instruction information of the compressor and an electronic expansion valve; based on the set of collaborative control instruction information, feedforward prediction compensation and timing inertia smoothing management are carried out in combination with measurable disturbance information to generate a set of final actuator driving instruction information after disturbance smoothing; and based on the set of final actuator driving instruction information, safety driving instructions and parameter online fine adjustment learning are carried out to generate a set of two-pole compressor control optimization information. In the compressor control process, the application can maintain the optimal efficiency and pressure stability of the system under transient conditions.

The utility model discloses a water quenching heat energy utilization system for lead-zinc volatile kiln slag. The water quenching heat energy utilization system comprises a hot water conveying pipeline, a filter, a CO2 transcritical cycle heat pump, an air conveying pipeline, a cylindrical dryer and a material conveying device, a water inlet of the filter is connected with a water outlet of the water quenching pool through a hot water conveying pipeline, and a water outlet of the filter is connected with a water inlet of the CO2 transcritical cycle heat pump through a pipeline, so that normal-temperature air entering the CO2 transcritical cycle heat pump is heated by utilizing heat energy of hot water discharged from the water quenching pool; an air outlet of the CO2 transcritical cycle heat pump is connected with a feeding port of the cylinder dryer through an air conveying pipeline so that wet zinc leaching residues entering the cylinder dryer can be pre-dried through hot air, a discharging port of the cylinder dryer is connected with the material conveying device, and the material conveying device is connected with a material inlet of the lead-zinc volatilization kiln. The wet zinc leaching residues are preheated and dried through heat energy carried by hot water generated through water quenching, the energy utilization rate is increased, and fossil energy consumption is reduced.