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

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 discloses a nanometer phase change energy-storage-type heat pump water heater. The heat pump water heater comprises a phase change energy storage box, wherein a condensation heat exchange coil pipe and a waterway heat exchange coil pipe are mounted in the phase change energy storage box; an expansion valve, an evaporimeter and a compressor are connected in a condensation heat exchange coil pipe loop in sequence; the phase change energy storage box is filled with a nanometer phase change energy storage material of which the phase change temperature is 50 to 60 DEG C; the nanometer phase change energy storage material comprises the following components in parts by weight: 0.5 to 2.0 parts of nano-particles, 0.9 to 3.6 parts of a dispersant, 94.4 to 98.6 parts of a phase change working medium. The potential heat value of the phase change material is large, and lots of heat can be absorbed in a phase change process, so that the heat conductivity coefficient of the phase change material is high, the heat transfer coefficient of the phase change energy storage box is improved, the time for thermal reaction is shortened, the efficiency is higher, and the energy conservation can be achieved better; thus, the heat pump water heater provided by the invention can be applied to the production and life field to realize that electric energy can be utilized to generate and store the heat during a low electricity demand period and release the heat during a high electricity demand period. Thus, the mismatch of two sides of energy supplying and energy demanding on time, strength and place is effectively released and solved, so that the aim that energy can be utilized reasonably and environmental pollution can be relieved is achieved.

The invention relates to a method for modifying a thermal power station by storing energy through fused salt and a device of the method. A fused salt heat storage system and a steam generation system are adopted instead of a coal-fired boiler of the conventional thermal power station; the fused salt is heated by using off-peak electricity to store heat; the stored heat is transformed into high-temperature and high-pressure steam; power is generated on a power consumption peak, or regional heating is performed by using an original pipeline. By adopting the method and the device, environmental problems caused by coal burning of the conventional thermal power station are solved fundamentally, the carbon emission is reduced, the problem of overlarge steam conveying distance during heating of a newly-built remote thermal power plant can be solved, and the investment cost is saved. Meanwhile, the off-peak electricity can be utilized effectively, and reasonable utilization of energy is realized.

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 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 and valley filling' of the solar energy is realized and the electric fence load is lightened.

The invention discloses an energy storage system capable of simultaneously supplying cold and heat. The energy storage system comprises a water chilling unit and a heat pump unit, the evaporator sideof the water chilling unit communicates with a first heat exchanger through a cold supply pipe for cooling, the condenser side of the heat pump unit communicates with a second heat exchanger through aheat supply pipe for heating, and a cold storage tank connected with the cold supply pipe in parallel and a heat storage tank connected with the heat supply pipe in parallel are further included. Theenergy storage system is provided with the cold storage tank and the heat storage tank, when the electricity price is at the low ebb at night, the cold storage tank and the heat storage tank can be used for energy storage, the cold capacity and the heat capacity of the cold storage tank and the heat storage tank can be released to be used by the first heat exchanger and the second heat exchangerto supply heat and cold to the user side when the electricity price is at the high peak state in daytime, peak shifting of the electricity is achieved, and the use cost is reduced.

The invention discloses a cooling storage type refrigeration and insulation tank, which comprises an insulation tank body, a refrigerating unit, cooling storage tanks, an electric power storage system and a temperature monitoring feedback system. The insulation tank body comprises a shell, an inner storage cavity and an insulation layer; the refrigerating unit comprises a high-efficient compressor, a condenser, an expansion valve and an evaporation coil; and the temperature monitoring feedback system comprises a temperature sensor and an intelligent change-over switch. The invention further discloses a working process of the cooling storage type refrigeration and insulation tank. The device is externally connected with a refrigeration power supply and a storage battery refrigeration power supply, so that the aims of high-efficient refrigeration and cooling storage of distributing nodes and regulation and cold release during a distribution process are achieved; during the distribution process of the device, storage battery power supply refrigeration and insulation as well as cooling storage and insulation are combined, so that a high-efficient and stable low-temperature cooling storage and insulation function of the device is ensured; and the cooling storage tanks in the device can be flexibly arranged according to the range factors such as the quantity, the distributing distance, and multiple distributing terminals of the distribute goods, so that the individuation and the sensitivity in applying the insulation tank are improved, and the use effect is good.

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 photovoltaic curtain wall and double-source heat pump integrated system suitable for a cold area. The system comprises a photovoltaic curtain wall (2), a ground source thermal component (3), an air source-ground source double-source heat pump unit (1), a phase change heat storage water tank (4) and a corresponding air conditioner tail end. The air flow output end of the photovoltaic curtain wall (2) is connected with an air inlet of the air source-ground source double-source heat pump unit (1) through a first electronic control air valve (6) through a pipeline (5). The air flow output end of the photovoltaic curtain wall (2) is connected with an air outlet (9) of the air source-ground source double-source heat pump unit (1) through a second electronic control air valve (7) and a draught fan (8) through the pipeline (5). By means of the system, double-effect utilization of solar thermoelectricity is achieved, and the power generation efficiency of a silicon cell is improved due to the fact that a PVT device is cooled; peak load shifting of solar energy is achieved; the problem that the solar heating guaranteeing rate is low is effectively solved, and one machine is provided with two sources; and cost increase is small, and the period of investment return is short.

The invention discloses water treatment equipment, which comprises an energy storage box, an energy storage loop, a heat exchange module, a water inlet pipe and a water outlet pipe, wherein a phase change material is arranged in the energy storage box; the energy storage loop comprises a phase change heat exchanger, an energy taking heat exchanger and a water pump which sequentially communicate, and the phase change heat exchanger is located in the energy storage box; the heat exchange module is used for refrigerating or heating the energy taking heat exchanger; the water inlet pipe is connected with the energy storage loop; and the water outlet pipe is connected with the energy storage loop. According to the technical scheme, the water treatment equipment can achieve rapid water refrigeration/heating.

The invention discloses an electric vehicle charging pile operation mode in a residential area. The electric vehicle charging pile operation mode comprises the steps of determining an electric vehiclecharging pile supply scheme, determining a use scheme of an electric vehicle charging pile user, determining a calculation method of an electric vehicle charging price, and determining an electric vehicle charging peak-valley time-of-use electricity price optimization strategy. The residential area electric vehicle charging pile operation mode is a residential area-oriented electric vehicle charging operation mode and operation strategy, and a typical charging pile system scheme design for a residential area is given.

The invention discloses a solid particle heat storage and release system of a multistage fluidized bed and belongs to the technical field of heat storage. The solid particle heat storage and release system comprises a heat storage and exchange unit, a heat release and exchange unit and a particle transportation unit, the heat storage and exchange unit is provided with a steam channel and a heat storage particle channel, and when the steam of a unit is sufficient, solid particles circulating in the heat storage particle channel are heated through unit steam extraction in the steam channel; the heat release and exchange unit is provided with a water supply channel and a heat release particle channel, and when the unit is in a low load, solid particles circulating in the heat release particle channel are used for heating water in the water supply channel so as to form superheated steam; the particle transportation unit is connected between the heat storage and exchange unit and the heat release and exchange unit and provides power for circulation of solid particles in the heat storage particle channel and the heat release particle channel, so that the external steam supply capacity of the unit can be kept stable, and the heat supply capacity is not affected by the power generation load of the unit, therefore, the operation flexibility of a cogeneration unit is improved.