SUMMARY. Nur and Lesmana, in their writings, discuss the analysis of the influence of turbine washing on the efficiency and power of steam turbine generators, which in general aim to analyze the comparison of steam turbine performance in the form of thermal efficiency, isentropic efficiency and steam turbine power generation before and after the turbine washing process. The article written by Abdulah et al. describes the method of analysis of cracks in the welded joint between the ASTM A106 pipe and the globe valve, namely by inspecting the installed material using OES (Optical Emission Spectroscope). Susetyo et al. conducted a study that aims to determine the effect of current and buffer layer on the hardness value of hardfacing results using A WS A5.13 EFe2/AWS A5.1 E7018 electrodes. Setiawan and Upara, in their writings describe the modification of the disc friction welding machine to produce a more optimal performance for the welding results carried out with the machine. Kurnia and Rahmalina, in their writings, discuss the simulation of the solar energy utilization system through a Ground Base Concentrated Solar Power (CSP) device equipped with a liquid fluid delivery system in the form of a piping system and a Stirling engine propulsion engine. Sugita et al. conducted a study to determine the effect of installing Exhaust Gas Recirculation (EGR) on exhaust emissions of the Honda Supra X 100. Irfan et al., in their writings, developed the design of an existing permanent magnet synchronous generator Sultan wind turbine to generate electricity at low wind speeds. Saputra et al, in their writings, describe the manufacture of briquettes from the raw material of palm fronds with the Pyrolysis method added with tapioca flour adhesive. Then tested the calorific value of the briquettes to determine whether the addition of tapioca flour can increase the calorific value. Viantama and Suyitno, in the research that was carried out, aimed to obtain the optimal motor specifications for electric cars with a capacity of 75 kWh by comparing the performance of the driving motor performance systems in the electric cars. Shieddique et al., in their research, discussed the modification of the epoxy powder coating material using an insulator from the Epoxy EF150AB material on the Disc Ceramic Capacitor (DCC) which was then tested for performance by testing the Pressure Cycle Temperature (PCT) and thermal shock to determine the extent which the use of the modified material may affect it. In Permanajati and Firman's writings, they discuss the effectiveness comparison between specification data and operational data of the UFX-42H heat exchanger before and after repairs. Maulana et al. conducted a study on the design of a wind power plant with a u-type savonius turbine for a capacity of 100 W using the Pahl and Beitz design method. Meanwhile, Suhandono and Sugiarto, in their research, produced an application for a tour package management information system for the SATU BIRU travel case study, which will later be applied to the progress of the travel. Aryabathi et al. conducted research on the potential of wind energy on the elbow side of the roof of a tall building which will later be used as initial data for the development of new renewable energy engineering, especially on wind energy. The purpose of the research conducted by Tupamahu and Sarwuna is to optimize the effectiveness of the clove essential oil distillation system condenser, which will be used for processing essential oils by small business groups of clove essential oil in Suli Village, Central Maluku. While the research conducted by Yahya et al., aims to design and implement a water vapour pressure control system on a prototype heating tank with a PLC-based PID control method as a plant model for development to the implementation stage.



Published: 2021-07-21

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