1 The molten glass can be poured into a mold and let cool. 2  This method was used by the Egyptians, and it is also how many lenses are created today. 3  A large amount of molten glass can be gathered at the end of a hollow tube, which is then blown into while the tube is turned.
Indirect costs vary depending on the indirect cost base. Indirect costs are assessed either on a Total Direct Cost (TDC) basis or a so-called Modified Total Direct Cost basis (MTDC). Check sponsor guidelines for direction.
For IGCC plants (using pre-combustion capture), the CCS cost ranges from 0.01â0.03 US$/kWh relative to a similar plant without CCS. For all electricity systems, the cost of CCS can be reduced by about 0.01â0.02 US$/kWh when using EOR with CO2 storage because the EOR revenues partly compensate for the CCS costs.