太阳能发电题（Solar power generation problems）.doc

太阳能发电题（Solar power generation problems） 1 the sun is the nearest star, a giant sphere composed of hot gas, the center temperature is about 7 times of K 10, the surface temperature is close to 5800K, mainly composed of hydrogen _ (about 80%) and helium (about 19%). 2 beyond the earths atmosphere, the radiant energy of the unit area perpendicular to the direction of the sun is essentially a constant at the mean distance between the earth and the sun. This radiation intensity is called the solar constant, or the radiation is zero mass (AM0) radiation, with a value of _1.367 kW/m2 3. solar cells are semiconductor effects utilizing the photovoltaic effect of Semiconductors 4, in measuring the output characteristic parameters of solar cells, the filling factor is the ratio of the maximum output power to the solar cell short circuit current and open circuit voltage 5 the laboratory efficiency of monocrystalline silicon solar cells is 24.7%, created and maintained by University of New South Wales in australia. 6. which of the following characterization parameters of solar cells does not belong to the main parameter of the solar cells electrical properties? Doping concentration. 7 the capacity of the battery is the battery storage capacity, mark symbol for C, usually to characterize the battery capacity _ ah with which of the following units 8 in the following photovoltaic system devices, the DC-AC (DC AC) conversion device is an inverter 9 the installed capacity of solar photovoltaic power generation system is usually based on the output power of solar cell assembly. If the installed capacity is 1GW, it is equivalent to 109 W. 10 an independent photovoltaic system, known system voltage 48V, battery nominal voltage is 12V, then the number of batteries to be connected in series is 4_. 11. solar photovoltaic power generation system, the most commonly used energy storage components are the following lead-acid batteries? 12 standard design of the battery operating voltage is 12V