Abstract: A method for evaluating theoretical potential of wind energy includes steps of: (1) selecting a target area for estimation of theoretical reserves of wind energy, and extracting a coordinate range of the target area; (2) presetting a spatial height of the target area d in step (1); (3) obtaining meteorological data of a wind speed and an air density of the target area in step (2); (4) according to the meteorological data obtained in step (3), calculating a theoretical wind reserves per unit area of the target area; (5) calculating an area size of the target area; (6) according to the meteorological data of the wind speed and the air density obtained in step (3), the spatial height of the target area obtained in step (2), and the area size of the target area obtained in step (5), calculating to obtain regional theoretical reserves of wind.

Abstract: A theoretical reserve evaluation method for ocean current energy includes steps of: 1) selecting a target region, and extracting a coordinate range of the target region; 2) obtaining a seabed water depth of the target region; 3) obtaining hydrological data of flow velocities and seawater densities of a target region space; 4) calculating a theoretical reserve of the ocean current energy per unit area of the target region according to the hydrological data, 5) calculating an area of the target region; and 6) calculating the theoretical reserves of the ocean current energy within a spatial range of the target region according to the hydrological data of the flow velocities and the seawater densities obtained in the step 3), the seabed water depth of the target region obtained in the step 2), and the area of the target region obtained in the step 5).

Abstract: A design method of a heat dissipation system of a wind generator system for severe environments includes constructing an outer air duct of the heat dissipation system; determining a suction air amount of the outer air duct; setting an air velocity of an air inlet of the outer air duct; determining an area of the air inlet of the outer air duct; providing the air inlet; and designing a settling chamber. With these steps, the original heat dissipation system of the wind generator system is additionally provided with the outer air duct. Further, the area of the air inlet is controlled to allow the air velocity at the air inlet to be 3 m/s to 4 m/s, thus rare or no suspended substances are suctioned into the outer air duct, and the radiators of the original heat dissipation system suction cooling air from the outer air duct.

Abstract: A design method of a heat dissipation system of a wind generator system for severe environments includes constructing an outer air duct of the heat dissipation system; determining a suction air amount of the outer air duct; setting an air velocity of an air inlet of the outer air duct; determining an area of the air inlet of the outer air duct; providing the air inlet; and designing a settling chamber. With these steps, the original heat dissipation system of the wind generator system is additionally provided with the outer air duct. Further, the area of the air inlet is controlled to allow the air velocity at the air inlet to be 3 m/s to 4 m/s, thus rare or no suspended substances are suctioned into the outer air duct, and the radiators of the original heat dissipation system suction cooling air from the outer air duct.

Abstract: A lubricant cooler, a cooling and lubricating system of a speed-up gear box, a wind power unit and a low-temperature starting method of the wind power unit. The lubricant cooler includes a radiating plate and a one-way valve arranged on a lubricant conveying pipeline, wherein the radiating plate and the one-way valve are arranged in parallel, and the one-way valve and/or the lubricant conveying pipeline in communication with the one-way valve are integrated on the radiating plate. The lubricant cooler can solve the problem that, when the wind power unit is started at a low temperature, the cooling and lubricating system of the speed-up gear box causes the shut-down of the wind power unit because the lubricant blocks the radiating plate.

Abstract: The present invention relates to a method of Agrobaterium-based transformation of a plant comprising: generating a callus explant by, performing callus induction and maintenance in a plant in at least a first solution comprising less than about 100 mg/l of inositol; subjecting the callus explant to a cold treatment in a second solution comprising glutamine; and co-cultivating the callus explant with an Agrobacterium in a third solution comprising glutamine. The present invention also relates to a callus induction medium and/or callus maintenance medium, comprising: less than about 100 mg/l of inositol, and optionally at least one constituent selected from the group consisting of: an N6 salt or any plant culture media, proline, casein hydrolysate, a B-Vitamin, maltose, phytagel, 2,4-D, BAP and/or other plant growth regulators/hormones.