31results about How to "Realize shifting peaks and filling valleys" patented technology

The invention relates to an energy storage solar ejection refrigeration device by adopting the solar energy to refrigerate, comprising a solar thermal collector, a water pump and a generator which form a circulation loop together with the solar thermal collector, a refrigerating medium circulation loop which exchanges the heat with the generator and consists of an ejector, a condenser and the refrigerating medium which are connected in series, a refrigerating medium circulatory refrigeration loop consisting of a throttling valve, an evaporator, the ejector and the condenser and an air conditioning circulatory refrigeration loop consisting of an air conditioning water pump and the evaporator, wherein, in the air conditioning circulatory refrigeration loop, a cold water loop is provided with a three way valve F6 and a valve F1, a cold water supply pipeline is provided with a valve F2 and a three way valve F4, an ice storage tank is arranged on a pipeline between the three way valve F6 and the three way valve F4, a pipeline between the valve F2 and the three way valve F4 is communicated with the ice storage tank by the valve F3, a pipeline between the ice storage tank and the three way valve F4 is also provided with a valve F5. The solar energy utilization ratio is increased by more than 30 percent, the cooling capacity is increased by more than 20 percent, 'the peak shifting andvalley filling' of the solar energy is realized and the electric fence load is lightened.

The invention discloses a fuel gas and steam combined power device with peak regulation and energy storage functions and a control method thereof. The fuel gas and steam combined power device comprises a first power generator, a steam turbine, an axial flow compressor, an axial flow turbine and a second power generator. The first power generator is connected with one end of a first rotating shaft, and the other end of the first rotating shaft is connected with one end of a second rotating shaft through a first 3S clutch; the other end of the second rotating shaft is connected with one end of a third rotating shaft through a second 3S clutch, and the other end of the third rotating shaft is connected with the second power generator; and the steam turbine is installed on the first rotating shaft, the axial flow compressor is installed on the second rotating shaft, and the axial flow turbine is installed on the third rotating shaft. The fuel gas and steam combined power device is used for conducting corresponding regulation when the power load is changed so as to adapt to the load change, peak shifting and valley filling are achieved, and the problems of difficult peak regulation, insufficient flexibility, low energy utilization rate and the like in an existing power plant can be well solved.

The invention discloses a peak regulation energy storage device with carbon dioxide as a working medium and a control method thereof. The peak regulation energy storage device comprises an energy storage system and an energy release system. The energy storage system comprises a carbon dioxide energy storage cycle subsystem, a first energy storage subsystem and a second energy storage subsystem, wherein the carbon dioxide energy storage cycle subsystem is used for achieving the energy storage thermodynamic cycle of the carbon dioxide, the first energy storage subsystem is used for achieving basic energy storage of cold and heat, the second energy storage subsystem is used for achieving multistage storage of energy, and the energy release system comprises a carbon dioxide energy release cycle subsystem, a first energy release subsystem and a second energy release subsystem. The carbon dioxide energy release cycle subsystem is used for achieving the energy release thermodynamic cycle of the carbon dioxide, the first energy release subsystem is used for achieving basic energy release of cold and heat, and the second energy release subsystem is used for achieving multistage release of energy. Through the peak regulation energy storage device with the carbon dioxide as the working medium and the control method thereof, multistage energy storage and release can be achieved, and peak load shifting is conducted flexibly.

The invention discloses a heat-storage peak regulating device used for a power supply system, and relates to a heating supply system and method for strengthening the self-adaptive performance of a heat supply system, simplifying a control process and realizing efficient and low-cost operation by utilizing a heat storage means. The device comprises a water supply section heat exchange tube (1), a water return section heat exchange tube (2), a heat storage / heat exchange module (3), a water supply tube of a water supply section heat exchange tube (1) connecting system and a water return tube of a water return section heat exchange tube (2) connecting system; a heat storage body is arranged in the heat storage / heat exchange module (3); the heat storage body is made of a phase-transition heat storage material and has a phase-transition temperature Tx0 which is set to be between the inlet water temperature of the water supply section heat exchange tube (1) and the return water temperature of the water return section heat exchange tube (2). According to the heat-storage peak regulating device, a high-position heat storage and low-position heat release means is adopted to reasonably digest heat exchange temperature difference caused by phase-change heat storage and increase inlet and return water temperature difference during practical operation of the system.

The invention relates to an online interactive UPS circuit, and belongs to the field of power supplies. The online interactive UPS circuit comprises an energy storage unit, an isolation transformer, an alternative current input / output switch, a smart rapid switch, an input electric reactor, a static / maintenance bypass switch and a central control system; the static bypass switch is connected in parallel with the maintenance bypass switch, and one end is connected to a power grid, the other end is connected with a load; the smart rapid switch input end is connected to the power grid through thealternative-current input switch; one end of the input electric reactor is connected with the smart rapid switch, and the other end is connected to the load through the output switch; a high-voltageend of the isolation transformer is connected to the power grid between the electric reactor and the output switch; a low-voltage end of the isolation transformer is connected with an energy storage unit; a central control system is used for controlling the power grid event, and disconnecting the load and the failure alternative-current input. Through adoption of the online interactive UPS circuit, grid-connection working condition and off-grid working condition can be switched seamlessly, the load is supplied with power continuously, so that the integral efficiency of the UPS device is improved.

The invention provides a heatable brick bed ventilation air conditioner and heating system preferentially facilitating a human body. The heatable brick bed ventilation air conditioner and heating system preferentially facilitating the human body comprises an outdoor energy supplying module and an indoor energy storing and utilizing module. The outdoor energy supplying module can supply heat or cooling capacity to an energy storage water tank through a heat pump subsystem and a circulating water energy supplying subsystem, and during energy storing, the heat pump subsystem runs at night when valley electricity is at a low price, and the operating cost can be reduced. The energy storage water tank can serve as a cold source or a heat source of a capillary network heat exchanger of the indoorenergy storing and utilizing module to heat and cool concrete pavements and indoor space, and the both effects of cooling in summer and carrying out heating in winter are achieved. On the indoor side, the temperature regulating and controlling near the human body is given priority to, the thermal comfort is high, the capillary network heat exchanger is adopted, the high-temperature cold source and the low-temperature heat source can be utilized, and therefore building energy saving and efficiency utilizing of energy sources are achieved on three aspects of energy supplying, energy storing andenergy utilizing.

The invention provides a stored-energy capacity configuration method used for stabilizing city load growth. The stored-energy capacity is an electric-energy quantity stored by an energy-storage system installed in a power grid. The method includes the following steps: obtaining typical daily load data of an installation point of the energy-storage system; calculating an output power of the energy-storage system; calculating a energy-storage-cell configuration capacity and an energy-storage rated power; constructing an energy-storage capacity configuration optimization target function; and carrying out an iterative operation until an optimal solution is obtained. The method realizes functions of peak load shifting and load peak and valley difference reduction in a city power distribution network. The method reasonably selects an energy-storage capacity according to a typical daily load curve of an energy-storage access point so that the adaptability is great; electric energy consumption and energy storage investment cost are considered comprehensively and while the voltage distribution of the power distribution network is adjusted, the voltage deviation of the power distribution network is reduced and the loss of the power distribution network is reduced, the investment cost is reduced as much as possible so that waste of energy storage device capacity is prevented; and the method is capable of calculation through use of an iterative method, simple and easy to realize and high in convergence rate.

The invention relates to the technical field of off-peak electricity utilization and heat pump heat supply, in particular to an off-peak electricity heat storage cascaded heat pump heat supply systemand modes. The heat supply system comprises an off-peak electricity heat storage device, a generator, an absorber, a condenser, an evaporator, a compressor, a gas-liquid separator and a user heat supply device, wherein the off-peak electricity heat storage device is connected with the generator, and a heat medium circulates between the off-peak electricity heat storage device and the generator through a high-temperature circulating pump. According to the system, the gas-liquid separator is arranged to realize a double-stage cascaded cycle including a vapor compression heating cycle and an absorption heating cycle, so that heat transfer loss between two-stage heat pumps is reduced, the heating efficiency of the system is improved, and the system structure is more compact; and meanwhile, theinvention provides a plurality of heat supply modes, flexible switching between a single-stage heating cycle and a double-stage cascaded heating cycle over the periods before, during and after heating, during an off-peak electricity period and during a non-off-peak electricity period, and match between supplied heat and the heating load is facilitated.

The invention provides a mechanical flash air-conditioning and refrigeration system and a working method thereof, belonging to the technical field of refrigeration. The system uses water as the working medium. Compared with the conventional refrigeration system using freon as the working medium, the circulating working medium has no environmental hazards; the frozen water obtained by flash evaporation directly exchanges heat with the indoor air when the invention works, and the cooling capacity release only needs One-stage heat exchange, the cooling capacity loss of the system is small, and the operating conditions of the water vapor compressor are improved, the energy consumption of the water vapor compressor is reduced, and the system has a high refrigeration coefficient. The system of the present invention can adjust the frequency of the water vapor compressor during the low electricity price period at night, increase the flash cooling capacity of the system, store cold through the flash tank, and release the cooling capacity during the high electricity price period, which not only realizes the optimization of power resources Peak shifting and valley filling, while reducing the operating costs of the system. The mechanical flash air-conditioning and refrigeration system of the present invention has the characteristics of energy saving, environmental protection and the like.

The invention relates to a cold storage and heat storage type air conditioner, which comprises an outdoor unit module, a heat storage groove and an indoor unit module, wherein the outdoor unit module comprises a compressor, an electromagnetic valve, an electronic expansion valve, a one-way valve and an outdoor heat exchanger, a heat exchanger and heat storage media are contained in the heat storage groove, the indoor unit module comprises an indoor heat exchanger and an electronic expansion valve, the compressor, the outdoor heat exchanger, the electromagnetic valve, the one-way valve, the electronic expansion valve and the indoor heat exchanger are sequentially connected for forming a refrigeration loop, the heat storage groove is directly connected with the outdoor unit module, the outdoor heat exchanger is connected with the end A of the heat storage groove through the electromagnetic valve and the one-way valve, the end A of the heat storage groove is connected to a position between the one-way valve and the electronic expansion valve through the electronic expansion valve, the end B of the heat storage groove is connected with an air return pipe of the compressor through the electromagnetic valve, and the end B of the heat storage groove is connected to a position between the one-way valve and the electronic expansion valve through the one-way valve. The cold storage and heat storage type air conditioner has the advantages that during normal refrigeration operation and heat generation operation, refrigerants do not need to flow through the heat storage groove, and the system energy efficiency is effectively improved.

This invention discloses a kind of heat pipe cooling accumulator air conditioner device. Indoor machine set is composed of fan and heat exchanging coil pipe; for outdoor machine set, upside condensation segment of heat pipe is positioned in evaporator, while the underside evaporation segment in the cooling accumulating tank which is filled with cooling medium; the inlet of compressor respectively connects to the outlets of evaporator using for air conditioner and cooling accumulation, while the outlet to the inlet of condenser; the outlet of condenser respectively connects to the inlets of evaporator using for air conditioner and cooling accumulation through magnetic valve and stop valve; indoor machine set respectively connects to the inlets of evaporator using for air conditioner and cooling accumulating tank through magnetic valve; the evaporator using for air conditioner and cooling accumulating tank all connect to the inlet of circulating pump through magnetic valve; the outlet of circulating pump connects to indoor machine set. This invention has short pipeline. It avoids decreasing of refrigerants pressure.