10results about How to "Low energy efficiency" patented technology

The invention relates to a calculation method and device for an intermediate frequency domain amplitude phase angle in a memristor array, and the method comprises the steps: obtaining a time domain input signal corresponding to a target memristor array, and calculating a cosine frequency mixing signal and a sine frequency mixing signal based on the time domain input signal, a preset cosine signal and a preset sine signal; respectively applying the cosine frequency mixing signal and the sine frequency mixing signal to corresponding row lines of the target memristor array so as to calculate cosine current data and sine current data based on discrete Fourier transform matrixes of the corresponding row lines; and obtaining current information of each frequency point in the target memristor array based on the cosine current data and the sine current data, and reading phase information and amplitude information corresponding to each frequency point in the current information through a preset phase discriminator and a peak detector. Therefore, the problems that in the prior art, the amplitude and the phase cannot be directly calculated under the condition that extra hardware overhead and operation delay are not increased, and the frequency domain amplitude phase angle calculation efficiency is greatly affected are solved.

The present invention relates to the technical field of refrigeration cycle, and specifically to a refrigeration system and circulation method for realizing low-temperature refrigeration, wherein the refrigeration system comprises a high-temperature cycle system and a low-temperature cycle system, wherein the high-temperature cycle system comprises a high-temperature low-pressure compressor, a high-temperature high-pressure compressor, a high-temperature condenser, a high-temperature intermediate cooler, a high-temperature low-pressure economizer and a condensing evaporator connected in series in sequence, wherein the high-temperature intermediate cooler is connected to the pipeline between the high-temperature low-pressure compressor and the high-temperature high-pressure compressor through a pipeline, and the high-temperature low-pressure economizer is connected to the high-temperature low-pressure compressor through a pipeline; and the low-temperature cycle system comprises an evaporator, a regenerator, a low-temperature low-pressure compressor, a low-temperature high-pressure compressor, a condensing evaporator and a liquid storage device connected in series, wherein the outlet of the liquid storage device is connected to the regenerator, and the regenerator is connected to the evaporator through a pipeline, so that the refrigerant circulates and refrigerates in a subcritical state, thereby improving the refrigeration efficiency.

The application relates to a method and device for calculating frequency domain amplitude and phase angle in a memristor array, wherein the method comprises the following steps: obtaining a time domain input signal corresponding to a target memristor array, and calculating a cosine mixing signal and a sine mixing signal based on the time domain input signal, a preset cosine signal and a sine signal; applying the cosine mixing signal and the sine mixing signal to corresponding row lines of the target memristor array respectively, so as to calculate cosine current data and sine current data based on a discrete Fourier transform matrix of the corresponding row lines; obtaining current information of each frequency point in the target memristor array based on the cosine current data and the sine current data, and reading phase information and amplitude information corresponding to each frequency point in the current information through a preset phase discriminator and a peak value detector respectively. Thus, the problems that the prior art cannot directly calculate the amplitude and the phase without increasing additional hardware overhead and operation delay, and the efficiency of frequency domain amplitude and phase angle calculation is greatly affected are solved.

The utility model provides a server board card and electronic equipment. The server board card comprises a PCB mainboard, a closed shell, a chip unit and a heat dissipation unit, the closed shell is arranged on the PCB mainboard, and a local immersion cavity is formed between the closed shell and the PCB mainboard; the chip unit and the heat dissipation unit are arranged in the local immersion cavity, the chip unit is arranged on the PCB mainboard, and the heat dissipation unit is in heat conduction contact with the chip unit; a liquid inlet and a liquid outlet are formed in the closed shell. The chip unit and the heat dissipation unit are locally closed, and the closed cavity formed by local closing is immersed by the liquid cooling medium, so that circulating heat dissipation is performed, and the cost of equipment and the liquid cooling medium can be reduced. Compared with overall immersion liquid cooling, the local immersion liquid cooling needs less circulating power, and the energy efficiency ratio of the equipment can be obviously reduced.

The utility model discloses a heat pump steam generating device which comprises a heat pump system and a steam system, the steam system is a shell and tube heat exchanger and comprises a barrel, tube plates used for fixing heat exchange tube bundles are arranged at the two ends of the barrel, and the heat exchange tube bundles are erected between the two tube plates at intervals from top to bottom. The tube plate and the inner wall of the barrel body form a tube box communicated with the heat exchange tube bundles, a pass partition plate for dividing a heat medium in the tube box to flow multiple heat exchange tube bundles from top to bottom is arranged in the tube box, a heat medium inlet is formed in the upper end of the tube box on one side, and a heat medium outlet is formed in the lower end of the tube box on one side; a steam outlet is formed in the top of the barrel; and a heat medium pipeline of the heat pump system is communicated with a heat medium inlet of the shell and tube heat exchanger and exchanges heat with the water circulation shell path. The high-temperature heat medium of the heat pump firstly exchanges heat with the water vapor with higher temperature through the pass partition plate, the temperature of the water vapor is further increased, and high-temperature and high-pressure water vapor higher than 150 DEG C can be directly generated without arranging a water vapor gas-liquid separation device and a flash tank.

The invention discloses a breathing device and method for magnetic pulverization of wood fibers. The breathing device comprises a gas storage device, a gas control valve, a feeding device, a material collecting device and a control device. The gas storage device is connected with an inlet of the gas control valve, a first outlet of the gas control valve is connected with the upper breathing tube, and the upper breathing tube is communicated with an upper breathing opening of a closed annular crushing cavity of the magnetic crushing equipment; the upper breathing opening is further communicated with a feeding device and a material collecting device. A second outlet of the gas control device is connected with a lower breathing tube; the lower breathing tube is communicated with a lower breathing opening of the closed annular crushing cavity of the magnetic crushing equipment; and the control device enables the wood fibers in the closed annular crushing cavity to be kept in a suspension state by controlling the air in and out of the first outlet and the second outlet.

This invention discloses a pump-driven, high-efficiency, low-pressure defrosting air source heat pump system and its control method. The system includes a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a throttling element, an energy storage module, a gas-liquid separator, a defrost bypass branch, and a pump return branch. The control method includes: executing a heating and heat storage mode to store heat in the energy storage module; responding to defrosting conditions, executing a heating and defrosting mode to extract heat from the energy storage module; while continuously supplying heat to the first heat exchanger, using low-pressure refrigerant to melt the frost layer on the wall of the third heat exchanger; opening the defrost bypass branch to allow some refrigerant to bypass from the inlet to the outlet of the third heat exchanger to reduce the internal pressure drop; and simultaneously starting the refrigerant pump to pump the liquid refrigerant at the bottom of the gas-liquid separator to the inlet of the second heat exchanger to enhance heat absorption. This invention eliminates the need for system shutdown during defrosting, achieving efficient defrosting and stable heating through the energy storage module, the defrost bypass branch, and the pump return branch, significantly improving system energy efficiency and comfort.

This invention belongs to the field of integrated circuit design and microarchitecture technology, and provides a high-bandwidth AI computing chip based on the Chiplet chip architecture and its acceleration method. The method constructs a hardware-enforced data closed loop including read and adaptive prefetching steps, data format rearrangement and inversion steps, systolic tensor calculation triggering steps, bandwidth prediction and allocation steps, dynamic data stream scheduling steps, full-reduce parallel communication steps, and pipeline bubble elimination steps. The memory access acceleration engine outputs prefetched key-value cache data blocks and unformatted weight data blocks through an adaptive prefetching algorithm; the tensor rearrangement engine performs address mapping inversion operations to output column-major weight tensors; the systolic array performs point accumulation and addition operations to generate transmission request trigger signals; and the dynamic bandwidth allocation module outputs predicted bandwidth allocation instructions based on an exponentially weighted moving average algorithm. This invention significantly reduces communication latency, eliminates pipeline bubbles, and improves energy efficiency at the physical level.

The utility model relates to the technical field of flue gas heat exchange systems, and discloses a flue gas heat exchange system for a urea pyrolyzing furnace, which comprises a flue gas heat exchanger, the flue gas heat exchanger is arranged in the boiler; a heat exchange tube group which is arranged in a vertical manner is arranged in the flue gas heat exchanger; the flue gas heat exchanger is respectively connected with a hot air pipeline and a cold air pipeline; the cold air pipeline is also connected with a cold primary fan; the hot air pipeline is also connected with the urea pyrolyzing furnace; the cold primary air fan is used for collecting natural air; natural air is fed into the flue gas heat exchanger through the cold air pipeline, is heated by the heat exchange pipe group, and is fed into the urea pyrolyzing furnace through the hot air pipeline. The system provided by the utility model is low in energy consumption, can be effectively integrated with a boiler, is high in operation stability, and is beneficial to improving the economical efficiency and the reliability of a urea pyrolysis process.

The invention relates to the technical field of air conditioning, in particular to an air conditioner controller anti-condensation system and a control method thereof, which are applied to an air conditioner system comprising a compressor, a reversing device, a controller, an outdoor heat exchanger, an electronic expansion valve and an indoor heat exchanger. The system comprises a capillary tube, a controller radiating tube, a controller radiating tube temperature sensor, an outdoor environment temperature sensor and an indoor environment temperature sensor, the capillary tube and the controller radiating tube are connected in series between the outdoor heat exchanger and the electronic expansion valve; a heat dissipation plate is arranged between the controller heat dissipation pipe and the controller, and the controller heat dissipation pipe and the controller are fixedly arranged on the two sides of the heat dissipation plate respectively. And the controller radiating tube temperature sensor is arranged on a pipeline between the capillary tube and the electronic expansion valve. According to the scheme, an anti-condensation system structure with low cost and high reliability is realized, and an intelligent control method which is accurate and has small influence on energy efficiency is provided.