Energy demands has been increasing from time to time, while there is energy supply decreasing in the last three decades. This has given a big impact in the energy price. Related to this problem, the common policies on the energy consumption sector are increase energy supply, or reduce energy consumption. This project was aimed to simulate energy efficiency action plan and analyse the impact on energy efficiency in household by reducing energy consumption. A survey to collecting data on common devices used in household has been done, i.e. information about price and energy consumption of the devices. There are two ways to doing this energy efficiency: changing the energy intensive equipment to more energy-efficient equipment, and changing the consumer behaviour. Household will only attract to apply energy efficiency scenarios on several conditions: low initial investment, short payback period of that investment, and high total energy and cost savings. We can applying several energy efficiency scenarios, and simulate the saving of the government (spending fewer subsidies) and also the saving from household (spending less energy loss, and payback period). The analysis demonstrated that replacing old appliances with newer technology would decrease energy consumption, but also increase the household spending for investment on new appliances. We also simulated further payback period with and without subsidy. The use of accurate energy performance measurement standards and protocols is the base of effective implementation of energy efficiency policies for appliances and equipment. This standards and protocols should be provided in place and updated regularly.
Water supply in Indonesia is facing some problems, such as lack of available water resources, lack of water supply services to the whole community and many water sources are polluted. In this study the water supply system in PDAM Tirta Silau Piasa was analyzed, and the results are used as input data for the evaluation of pipeline simulation using Waternet Software. Results of this study showed that the pipe for water distribution will still function properly until 2015 .
Cakung floodway is a drainage channel that plays an importance rule for the overall of drainage system in Jakarta. Rainfall in 2013 and 2014 produced a big flood in Jakarta. Based on flood map Jakarta 2013 and 2014, there are inundated areas due to 2013’s and 2014’s rainfall. So, it is necessary to analyze the flood water level in channel floodway. Using HEC-RAS, this study aimed to evaluate the water level due to the maximum rainfall in 2013 and 2014. HEC-RAS is a tool for 1D hydraulic modeling and has reliability in routing of canal water level or river flooding. The results show that the maximum rainfall in 2013 provides a significant increasing of water level in Cakung floodway compared with the maximum rainfall in 2014. Soon, the need for canal normalization to reduce flood water level in Cakung floodway should be considered.
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