Page 235 - Design of Solar Thermal Power Plants
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218         3. GENERAL DESIGN OF A SOLAR THERMAL POWER PLANT


















                           FIGURE 3.64  Parabolic trough collector loop.


                   Center-to-center distance between collector units in the thermal
                collection loop is normally three times of the width of aperture of
                parabolic trough concentrator. For example, in case of the width of
                aperture of concentrator being 5.7 m, the center-to-center distance
                shall be about 17e20 m.
                   Layout of power tower concentration field will be explained in
                details in Section 4.2. Normally, there are two ways, namely the
                northward concentration field and encircled concentration field.
                Fig. 3.65 displays an example of the northward concentration field.
             3. Steam generating area. A steam generating area includes such
                major equipment as feed water preheater, evaporator,
                superheater, and reheater. In case of the heat-transfer medium
























                 FIGURE 3.65  Concentration field of PS10 power tower plant in Spain [32].
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