This study aimed to identify the current technological developments that are important to be integrated into the curriculum of higher education to improve its relevance. The design of this study used a survey design, which the research area is Makassar City. Respondents were taken from the automotive engineering education lecturers, and automotive technicians from 5 authorized automobile shops in Makassar. Instrument for data collection was a structured questionnaire designed by researchers from a variety of literature. Data obtained from 20 respondents were analyzed using t-test method. It was found that 36 innovations including; Electronic Fuel Injection (EFI), Variable Valve Timing Intelligence (VVT-i), Anti-lock Braking System (ABS), On-board Detection and Diagnostic System (OBD), etc, were perceived as important to be integrated into appropriate curriculum. Interventions to upgrade human resources in order to facilitate the teaching and learning of skills related to these innovations were recommended.
Methane hydrate is believed to contain a massive amount of potentially extractable hydrogen gas due to methane as the main component. A high-frequency argon jet plasma method has been proposed for decomposing hydrogen content. The excitation temperature of plasma can be directly observed from atomic emission lines. This information is more efficient to characterize the plasma behavior to optimize the decomposition process. In this study, the plasma excitation temperature was determined using spectroscopy and Boltzmann’s plot with a higher argon gas flow rate. An argon gas flow rate varied from 300, 400, 500, 1000, 1500, 2000, 2500, and 3000 mL/min. It flows inside a hollow tube in the counter electrode. A 27.12MHz high-frequency power source of plasma was applied to produce jet plasma at atmospheric pressure. The excitation temperature was observed in the range of 4310K to 5133K. The highest excitation temperature of 5133K was obtained at an argon gas flow rate of 500 mL/min.
This work aims to investigate the performance of the boiler of a power plant in Tello Makassar. The boiler has generated an electricity power of 50 MW in order to fulfil the electricity needed by people in Makassar city. Performance investigation of the steam generator is very important due to the operation of the boiler is a long time since 1971. The methodology in this study uses energy and exergy analysis as well as the entropy generation approach. The methodology will be applied in all the boiler components, namely Combustion Chamber, evaporator, superheater IA, superheater IB, superheater II, air heater I, economizer, and air heater II. The result shows a significant decrease in the efficiency of energy and exergy for superheater II of 28.98% and 21.28% respectively. The performance of superheater I and air heater II shows energy efficiency above 90%, while the exergy efficiency is lower than 50% for both components. The economizer has been in the middle performance by placed the efficiency of energy and exergy in 64.48% and 48.35% respectively. In general, boiler components are working very well by the reach an energy efficiency of 90% on average. However, by applications, the exergy analysis of the performances of the components does not reach 50%. The result of the study also shows that the energy and exergy efficiency of the boiler are 41.96% and 29.36% respectively. Meanwhile, the heat inducted to the steam turbine is 35.98 MW and 15.12 MW by energy and exergy analysis when the plant has been working on 10.3 MW of a load.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.