The insolation of the catenary-tent-collector for 0=22.3°N, Lg=200°, optical depth of the atmosphere 0=0.5 and albedo al=0.22 is shown in Table 1 based on radiation data at VL1 [6]. The table shows the beam, diffuse and the albedo insolations on sides A and B in KWhr-day and KWhr/m2-day. As expected t he beam insolation on side B is lower (by 62.9%) than on side A. It is interesting to note that the diffuse insolation comprises 46.8% of the global insolation. This characteristic is typical for Mars, a place where the atmosphere consists mainly of dust particles. Table 1: Insolation on a catenary-tent collector, 0=22.3°N, Lg=200 °, al=0.22, 0=0.5. p. 233 The article analyses the performance of a catenary-tent-collector [1] (a flexible blanket that falls freely on both sides of a central support). This kind of collectors has characteristics (portability and simplicity) that are desirable for solar power plants on outer space planets. Because of its shape, there is a self-shading effect that must be taken into
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