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238 results about "Solar flare" patented technology

A solar flare is a sudden flash of increased brightness on the Sun, usually observed near its surface and in close proximity to a sunspot group. Powerful flares are often, but not always, accompanied by a coronal mass ejection. Even the most powerful flares are barely detectable in the total solar irradiance (the "solar constant").

Solar air-conditioning system and control method thereof

The invention discloses a solar air-conditioning system and a control method thereof. The solar air-conditioning system comprises a solar cell array, a photovoltaic converter and an air-conditioning unit. The photovoltaic converter comprises a booster circuit, a rectification and inversion grid-connected circuit and a control circuit, wherein the booster circuit is used for controlling the solar cell array to output the maximum power through maximum power output control signals, and the rectification and inversion grid-connected circuit is used for switching rectification and inversion grid-connected working states through state switching control signals, so that energy of a public electric network and energy of the solar cell array are used for supplying power to the air-conditioning unit, and the energy of the solar cell array is controlled to be fed back to the public electric network. By the adoption of the solar air-conditioning system and the control method of the solar air-conditioning system, the problems that excessive energy output by a solar cell array in the prior art can not be fed back the power grid and high costs are caused by the adoption of a storage battery are solved, and the effects that the excessive energy of solar power generation is fed back to the power grid, meanwhile, the power grades of an air conditioner are expanded, and the cost is reduced are achieved.
Owner:GREE ELECTRIC APPLIANCES INC

MODIS satellite high-precision monitoring method for chlorophyll-a in eutrophic lake water body

The invention provides an MODIS satellite high-precision monitoring method for chlorophyll-a in a eutrophic lake water body. The method comprises the following steps: screening a chlorophyll-a evaluation index (BNDBI) which is sensitive to the concentration change of chlorophyll-a and not affected by highly suspended matters, thin cloud and solar flares; acquiring the quantitative relationship between BNDBI and the concentration of chlorophyll-a on the basis of biological optical model simulation; acquiring a chlorophyll-a inversion algorithm based on ground measured spectrum (Rrs) and BNDBI by referring to water body spectral information and corresponding water body chlorophyll-a concentration of 2013-2014 lake field monitoring; acquiring the quantitative relationship between the ground monitoring and remote sensing reflectance ratio (Rrs) and Rrc after simulated Rayleigh scattering correction by simulating different aerosol types and thicknesses and different solar elevation angles, satellite observation angles and azimuth angles; and extending the chlorophyll-a inversion algorithm based on ground measured spectrum data to satellite image data after Rayleigh scattering correction. Based on the method, inter-annual and inter-monthly change rules and spatial distribution of chlorophyll-a in a eutrophic lake can be acquired accurately.
Owner:NANJING INST OF GEOGRAPHY & LIMNOLOGY

Real time extracting method for satellite remote sensing sea fog characteristic quantity

The invention relates to a real-time extracting method of satellite remote sensing sea fog characteristic quantity, daytime EOS/MODIS data is used and is read into a raw data file PDS, the difference of sea fog and low cloud on a spectral characteristic is analyzed in two steps that: firstly, the sea fog and the low cloud are separated, and then, the sea fog characteristic quantity is extracted, namely that a three-level identifying method is adopted to orderly filter high cloud, middle cloud, low cloud, a cloudless water body, a solar flare water body, a cloud shadow area, a sea ice and a snow cover, the sea fog detection is established, a sea fog distributing area is obtained, a file which comprises a sea fog detecting result is generated, then, the sea fog characteristic quantity of the optical thickness of a fog area, the effective radius of fog and a liquid water path are calculated according to a formula, and pictures are displayed on a microcomputer. The method not only extracts the sea fog characteristic quantity, but also can calculate the visibility and the fog top height of the fog, consequently, the quantification detection of the sea fog is realized, and a dissipation forecast of the sea fog supplies meteorological information for air safety above the sea, maritime traffic and coastal airport operation.
Owner:OCEAN UNIV OF CHINA

Solar air-conditioner

The invention relates to a solar air-conditioner comprising a U-shaped heat pipe collector, a lithium bromide absorption-type refrigerating machine, a heat storage water tank, a cold storage water tank, a circulation pump, a cooling tower, an air-cooled coil pipe, an auxiliary oil-fired boiler and an automatic control system. The lithium bromide absorption-type refrigerating machine comprises a high-pressure generator, a low-pressure generator, an evaporator, an absorber, a cooling tower, a cooled heat exchanger, a concentrator and a generator pump. Lithium bromide-water separators are respectively arranged in the high-pressure generator and the low-pressure generator. Surfactants are added in refrigerant solution. The solar air-conditioner does not need to consume lots of energy and has low requirement on heat energy, can utilize various low-grade heat energy besides the solar heat sources, and has good electricity saving and energy saving effects and high economic efficiency. The cold capacity regulating range is wide. Along with the change of external load, the unit can carry out stepless regulation on the cooling capacity within the range from 10% to 100%, and during low load regulation, the heat efficiency hardly falls and the properties are stable; therefore, the solar air-conditioner can better adapt to the requirement of variable load.
Owner:黄山创鑫企业管理咨询有限公司

Solar air conditioner and solar air-conditioning system consisting of solar air conditioner

The invention discloses a solar air conditioner and a solar air-conditioning system consisting of the solar air conditioner. The solar air conditioner comprises a solar electrical energy generation unit, a DC-DC converting unit, a main control unit and a variable frequency air-conditioning unit connected in turn, wherein the solar electrical energy generation unit and the DC-DC converting unit are connected to an electric power storage unit together; and the solar air-conditioning system comprises the solar air conditioner and at least one set of additional solar air conditioners. The solar air conditioner and the solar air-conditioning system can invert and transmit redundant electrical energy to the mains supply after the electric power storage unit is charged through a DC-AC inverter, so the solar air conditioner and the solar air-conditioning system are favorable for energy saving and emission reduction of an electric power system. But the solar air-conditioning system can combine a plurality of the solar air conditioners for use, uniformly uses each solar electrical energy generation unit to supply power to the variable frequency air-conditioning unit, or supplies the generated electrical energy to the mains supply by using a uniform electrical power transmission unit.
Owner:GUANGDONG MIDEA ELECTRIC APPLIANCES CO LTD
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