with results as shown in Figure 3. It is seen that the profiles have zero slopes at x = 0 in accord with equation (7), and the same ordinate at x = 1 in accord with equation (11). The corresponding parameter values, 5, are shown in Figure 4. These values are all small numbers, as would be expected to maintain high receiver efficiency. Hence, for every N (axial conduction number of transfer units) and £(heat exchange effectiveness) there is a 8 of order 10’2 which renders a steady-state solution with all conditions satisfied. For specified receiver heat transfer, Qs c = 96.470 kW, and fluid inlet temperature, Tfl = 797 K, this parameter specifies the required absorber surface area: Variable (Oscillation) Solution The scaled variable temperatures in this analysis are relative to the above average temperatures, and therefore sequentially have positive and negative values, which tend to cancel out variable loss components. Furthermore, these losses are of order 3 (order IO'2). Thus, neglecting variable losses, equation (6) yields the equation for 9V:
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