As shown in Fig. P5.26, two reversible cycles arranged in series each produce the same net work, Wcycle. The first cycle receives energy QH by heat transfer from a hot reservoir at 10008R and rejects energy Q by heat transfer to a reservoir at an intermediate temperature, T. The second cycle receives energy Q by heat transfer from the reservoir at temperature T and rejects energy QC by heat transfer to a reservoir at 4008R. All energy transfers are positive in the directions of the arrows. Determine (a) the intermediate temperature T, in 8R, and the thermal efficiency for each of the two power cycles. (b) the thermal efficiency of a single reversible power cycle operating between hot and cold reservoirs at 10008R and 4008R, respectively. Also, determine the net work developed by the single cycle, expressed in terms of the net work developed by each of the two cycles, Wcycle.

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