Claim Missing Document
Check
Articles

Found 6 Documents
Search
Journal : Mesin

TINGKAT URGENSI PENGUJIAN POLUSI GAS BUANG KENDARAAN BERMOTOR DI INDONESIA Hardianto, Toto; Suwono, Aryadi; Suyitno, Suyitno
Mesin Vol 12, No 3 (1997)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.774 KB)

Abstract

Until now, Indonesia does not have any dynamics exhaust pollution test standard, which is customized to Indonesian traffic and climate. On the other hand, the air pollution problem in Indonesian big cities has reached a critical level.Some researches done by some institutions (including ITB) show that the air pollution level in Jakarta and some other big cities is mainly caused by transportation, industry, domestic, and trash burning. Among those four pollution sources, transportation (motorized vehicles) is the most significant. Therefore, in order to solve the air pollution problem effectively, it has to be started from the transportation sector, and It is very important to do an intensive research which leads to a establishment of a test standard for exhaust gas pollution that is designed based on Indonesian condition.The application of a suitable dynamics exhaust gas pollution test standard is expected to support the pollution monitoring and control activities all over Indonesia, especially in big cities, so that the Indonesian air pollution can be reduced and maintained in a save level.
PERANCANGAN MEKANISME MOTOR STIRLING BERKAPASITAS 1 kW Hardianto, Toto; Suharto, Djoko; Dirgantara, Tatacipta
Mesin Vol 16, No 2 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (332.306 KB)

Abstract

The Stirling engine is an external combustion engine for converting the thermal energy into mechanical energy. This engine uses a Stirling cycle, which theoretically could have high thermal efficiency, which is as high as a Carnot cycle operating at a similar condition.This paper deals with a design process of Stirling engine’s mechanism stressing on the kinematics and dynamics aspects. Thermodynamics and geometry parameters are the inputs required for designing the Stirling engine’s mechanism. Material aspect has not been included in the design. The main parameters analyzed are: engine’s rotational speed, working temperature, cylinder’s pressure, inertial forces and power output.The results of the design are useful to give an overall picture of the main dimensions of a Stirling engine. Detail calculations are still needed for more advanced design.
ANALISIS TERMOHIDROLIKA TERAS REAKTOR SUSUNAN HEKSAGONAL S, Adolf Asih; Suwono, Aryadi; Hardianto, Toto
Mesin Vol 13, No 3 (1998)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.658 KB)

Abstract

In this experiment, the study focusses on reactor core thermohydraulic aspects especially the distributions of fuel surface temperature, fluid temperature and fluid axial velocity. Simulation data were obtained in the middle, at the edge and at the comer sub-channels. In this experiment, modeling of hexagonal configuration of reactor core and reflector was carried out. The power generations were assumed constant at 250 kwatt, 375 kwatt and 5 00kwatt for each filel element. This model was prepared and analyzed using Fluent Version 4.25 package program available at the Thermodynamic Laboratory of IURC-ES. The result shows that this reactor core model gives low fuel surface and fluid temperatures.
TINGKAT URGENSI PENGUJIAN POLUSI GAS BUANG KENDARAAN BERMOTOR DI INDONESIA Toto Hardianto; Aryadi Suwono; Suyitno Suyitno
Mesin Vol. 12 No. 3 (1997)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Until now, Indonesia does not have any dynamics exhaust pollution test standard, which is customized to Indonesian traffic and climate. On the other hand, the air pollution problem in Indonesian big cities has reached a critical level.Some researches done by some institutions (including ITB) show that the air pollution level in Jakarta and some other big cities is mainly caused by transportation, industry, domestic, and trash burning. Among those four pollution sources, transportation (motorized vehicles) is the most significant. Therefore, in order to solve the air pollution problem effectively, it has to be started from the transportation sector, and It is very important to do an intensive research which leads to a establishment of a test standard for exhaust gas pollution that is designed based on Indonesian condition.The application of a suitable dynamics exhaust gas pollution test standard is expected to support the pollution monitoring and control activities all over Indonesia, especially in big cities, so that the Indonesian air pollution can be reduced and maintained in a save level.
ANALISIS TERMOHIDROLIKA TERAS REAKTOR SUSUNAN HEKSAGONAL Adolf Asih S; Aryadi Suwono; Toto Hardianto
Mesin Vol. 13 No. 3 (1998)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this experiment, the study focusses on reactor core thermohydraulic aspects especially the distributions of fuel surface temperature, fluid temperature and fluid axial velocity. Simulation data were obtained in the middle, at the edge and at the comer sub-channels. In this experiment, modeling of hexagonal configuration of reactor core and reflector was carried out. The power generations were assumed constant at 250 kwatt, 375 kwatt and 5 00'kwatt for each filel element. This model was prepared and analyzed using Fluent Version 4.25 package program available at the Thermodynamic Laboratory of IURC-ES. The result shows that this reactor core model gives low fuel surface and fluid temperatures.
PERANCANGAN MEKANISME MOTOR STIRLING BERKAPASITAS 1 kW Toto Hardianto; Djoko Suharto; Tatacipta Dirgantara
Mesin Vol. 16 No. 2 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Stirling engine is an external combustion engine for converting the thermal energy into mechanical energy. This engine uses a Stirling cycle, which theoretically could have high thermal efficiency, which is as high as a Carnot cycle operating at a similar condition.This paper deals with a design process of Stirling engine's mechanism stressing on the kinematics and dynamics aspects. Thermodynamics and geometry parameters are the inputs required for designing the Stirling engine's mechanism. Material aspect has not been included in the design. The main parameters analyzed are: engine's rotational speed, working temperature, cylinder's pressure, inertial forces and power output.The results of the design are useful to give an overall picture of the main dimensions of a Stirling engine. Detail calculations are still needed for more advanced design.