How would the capital costs of a coal fired LP Turbine unit compare with its conventional equivalent?
A. Very favourably because LP Turbine units do not require cooling towers or other water cooling systems. The turbines will larger because they are operating at lower pressures and temperatures but manufacturing costs will be reduced because injection moulded plastics can be used for many components. Q9. How about comparative running costs for coal fired units? A. LPT systems should offer big savings. Solving the latent heat problem will dramatically increase thermal efficiency, reducing fuel and fuel storage costs. Cooling water will not be squandered, pumping it into the air and a desalination option will become available to earn extra revenue. FAQ10. Would an open cycle system be better? i.e., Is it worth while, in energy terms, compressing the low pressure vapour back to atmospheric pressure? A Yes because almost twenty times as much energy would be required to produce the same mass of new vapour by evaporation. Sample calculation, assuming 1 kg of steam is compressed from 20% atmo
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