CSP太阳能热发电介绍.ppt

1、上海交通大学机械与动力学院,Concentrating Solar Power (CSP),Outline,The define of CSP,The four principal CSP technologies,The cost of CSP,The plants,The future,CSP,CSP plants are utility-scale generators that produce electricity by using mirrors or lenses to efficiently concentrate the suns energy to drive turbin

2、es, engines, or high-efficiency photovoltaic cells The four principal CSP technologies Linear fresnels Parabolic troughs Power towers Dish-stirling engine systems,CSP,Parabolic troughs,Parabolic trough power plants focus the suns rays on tubular receivers with the aid of parabolic mirrors that track

3、 the sun in a single axis. The heat generated is removed, e.g. using circulating thermal oil, and used to produce steam.,80-MWe SEGS plants Gross steam cycle efficiency 38% Team pressure 100bar Temperature 370C,Linear fresnel plants,Like parabolic trough power plants, Fresnel power plants are based

4、around a trough structure which focus the suns rays on a line. Unlike the parabolic trough, in which the receiver tube is situated in the focus of the parabolic-shaped mirror and tracks the sun with the mirror, in Fresnel power plants the receiver is in a fixed position above the solar array so that

5、 only the mirrors track the movement of the sun. Furthermore, this system allows the use of flat mirrors, which are considerably cheaper. The heat carrier used is water, allowing the progressive direct evaporation technique to be used.,Linear fresnel plants,On 9 July 2007, Michael Mller, Parliamenta

6、ry State Secretary for the BMU, officially opened a 100 meter long Fresnel demonstration collector at Plataforma Solar de Almera in Spain. With a mirror area of 1,500 m2, the plant produces steam at a temperature of 400C, while metrological systems record and analyze all the principal operating data

7、. The collector was developed by MAN Ferrostaal AG. Several Mediterranean countries have already expressed an interest in Fresnel technology, whose simplified design not only promises to be cheaper than parabolic trough technology, but also offers increased local value-added in the target country (f

8、unding total: 1.2 million euros).,Power towers,In solar power towers, the receiver is sited on top of a tower. A panel of flat mirrors which track the sun in two axes (heliostats) focuses the suns rays onto this receiver. There are two different types of receiver: -In open volumetric systems, the su

9、ns rays heat the ambient air via a porous ceramic material .The outside air is drawn in through the pores and heated up. The heat is transferred to a steam circuit for the generation of electricity at temperatures of up to 700C. - The closed receiver system is more progressive, and is capable of rea

10、ching air temperatures of more than 1,000C.,Dish-stirling engine systems,Dish/engine systems convert the thermal energy in solar radiation to mechanical energy and then to electrical energy in much the same way that conventional power plants convert thermal energy from combustion of a fossil fuel to

11、 electricity,Project,Project,More than 21,000 hours of operation on four Stirling engines Average daily efficiency of 24% conversion of solar energy into electricity Solar System availability exceeding 96% Peak solar power generation of 24.9 kW,Price,Price,Price,R & D,Operational plants increase in

12、2007: US (California) - 354 MW FPLs Solar Energy Generating Systems (SEGS) plant, using parabolic troughs US (Arizona) - 1 MW Acciona Energys Saguaro Solar Generating Station using parabolic troughs Spain (Seville) - 11 MW Abengoas PS10 solar tower Australia (NSW) - 35 MW Liddell Power Station using

13、 fresnel reflectors US (Nevada) - 64 MW Acciona Energys Nevada Solar One plant (not to be confused with the Solar One / Solar Two experimental plants) using parabolic troughs,Plants currently under construction: Spain (Seville) - 20 MW Abengoas PS20 solar tower Spain (Seville) - 20 MW (each) Abengoa

14、s PS20 and AZ20 solar towers Spain (Seville) - 50 MW (each) Abengoas Solnova 1 and 3 using parabolic troughs (5 plants planned in all) Spain (Andalusia) - 17 MW Seners Solar Tres solar tower (molten salt energy storage) Spain (Andalusia) - 50 MW (each) Seners Andasol I, II and III plants (molten sal

15、t energy storage) USA (California) - 177 MW ( SOLAR CLFR SYSTEM) Algeria - 20 MW Abengoas plant in Hassi-RMel Australia - 10 MW Queensland State Government facility in Cloncurry Australia - 154 MW Solar Systems and TRUEnergys plant in Mildura Egypt - 70 MW plant in Kuraymat Iran - 17 MW plant in Yazd Israel - 250 MW plant in Ashalim Morocco - 20 MW Abengoas pla