4. R&D Schedule
Research and development began in April. 1997. The schedule for the six-year plan is shown in Figure 1.
In 1997, basic overall design work for the gas turbine was completed and the target goals for each component were developed. Beginning in 1998, a variety of tests were carried out on the components. Detailed design work based on results of this component research is progressing, and a test engine of the SMGT will be completed midway through 2001. From 2001 to 2002, rig tests will be performed to evaluate the SMGT's performance.
5. SMGT Basic Specifications
Table 1 shows the targeted design specifications for each component. Table 2 shows each section's type. Figure 2 shows a schematic diagram of the SMGT, and Figure 3 shows a cross-sectional diagram of the gas turbine. The basic specifications were determined based on marine engine regulations, class NK steel ship regulations, IMO high-speed vessel codes. etc.
To achieve a high thermal efficiency the SMGT uses a regeneration cycle. Regeneration cycle simulation results are shown in Figure 4. In order to reach a regeneration cycle of η=38〜40% with a TIT of 1,200℃, a pressure ratio of (π)= 8 is required.
The recuperator is a compact, plate-fin type with a large heat transfer area. The combustion method uses pre-vaporization and pre-mixing to create a lean mixture resulting in low NOx emissions.
