| dc.description.abstract | Rapid population growth has resulted in fossil energy being gradually depleted
and environmental pollution getting worse. So far, burning fossil fuels already
produces about 40% of global carbon dioxide (CO2) emissions, which are considered
a major source of greenhouse gases. Internal Combustion Engine (ICE) has become
the main power source for cars, trucks, locomotives, and ships. In ordinary diesel
engines, less than 45% of the fuel energy can be converted into useful work output from
the crankshaft, and the remaining energy is largely lost through exhaust gases and
jacket water. One way that can be done is to utilize the waste from the internal
combustion engine (ICE). This method uses the Organic Rankine Cycle (ORC) system
by utilizing exhaust heat from the diesel engine from the engine coolant to the
evaporator. In this research, focused study on exergy analysis of each component in
the ORC sistem integrated in the diesel engine cooling unit which was simulated using
Aspen Plus software. The analytical method used in this study is the exergy method
with variations in ambient temperatur 20 ℃ - 28 ℃ by using the working fluid R141B.
The results showed that the highest extreme digestion was obtained in condenser and
evaporator components, while the lowest occurred in pumps and turbines. As well as
the efficiency of exergy increases as the environmental temperature rises at 20 °C,
which is 7.53 kW to 7.73 kW at a temperature of 28 °C. | en_US |
