In our case, the steam content is less than 2% and we therefore neglect the steam in this first study. The lack of thermodynamic tables for mixtures of CO2 and steam makes computer simulations necessary. For CO2, there exist discrepancies in different tables (see Table 1); the influence of these discrepancies on our results is illustrated in Table 1. Data are based on Vargaftig 9 and Altunin.10 The evident differences are admissible first approximations. In offshore use, the mass of the OCDOPUS plant, which is dominated by recuperator 3, may be of primary importance. In our case, the recuperator weighs about 61.4 tons, the heat transfer is 29.1 MW, and the surface area is 5990 m 2. The masses of the power plant and of the airseparation unit are estimated to be 100 tons each, i.e. the total mass is 200 tons or about 20 kg/kW. This is a representative figure for heavy-duty plants. More rigorous calculations should be performed in the future.
In our case, the steam content is less than 2% and we therefore neglect the steam in this first study. The lack of thermodynamic tables for mixtures of CO2 and steam makes computer simulations necessary. For CO2, there exist discrepancies in different tables (see Table 1); the influence of these discrepancies on our results is illustrated in Table 1. Data are based on Vargaftig 9 and Altunin.10 The evident differences are admissible first approximations. In offshore use, the mass of the OCDOPUS plant, which is dominated by recuperator 3, may be of primary importance. In our case, the recuperator weighs about 61.4 tons, the heat transfer is 29.1 MW, and the surface area is 5990 m 2. The masses of the power plant and of the airseparation unit are estimated to be 100 tons each, i.e. the total mass is 200 tons or about 20 kg/kW. This is a representative figure for heavy-duty plants. More rigorous calculations should be performed in the future.
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