Universiti Teknologi Malaysia

About: Universiti Teknologi Malaysia is a education organization based out in Johor Bahru, Malaysia. It is known for research contribution in the topics: Membrane & Control theory. The organization has 21644 authors who have published 39500 publications receiving 520635 citations.

Targeting the minimum water flow rate using water cascade analysis technique

Abstract: This work presents the water cascade analysis (WCA) as a new technique to establish the minimum water and wastewater targets for continuous water-using processes. The WCA is a numerical alternative to the graphical water targeting technique known as the water surplus diagram. The WCA is to the water surplus diagram in water pinch analysis (WPA) as problem table analysis (PTA) is to the grand composite curves in heat pinch analysis. By eliminating the tedious iterative steps of the water surplus diagram, the WCA can quickly yield accurate minimum water targets, pinch point locations, and water allocation targets for a maximum water recovery (MWR) network, thereby offering a key complementary role to the water surplus diagram in the synthesis of water network. As in the case of the water surplus diagram, the WCA is not limited to mass-transfer–based operations and is applicable to a wide range of water-using operations.

Exploring the relationship between urbanization, energy consumption, and CO2 emission in MENA countries

Abstract: This study explored the relationship between urbanization, energy consumption, and CO2 emission in the MENA countries. The panel model was utilized taking the period 1980–2009 into consideration. Pedroni cointegration test results showed that urbanization, energy consumption and CO2 emission were cointegrated. The dynamic OLS results also showed that there was a long run bi-directional positive relationship between urbanization, energy consumption, and CO2 emission. However, the significance of the long run relationship between urbanization, energy consumption, and CO2 emission varied across the countries based on their level of income and development. Moreover, long and short run bi-directional causal relationships were found between the variables based on the Granger causality test results. From the results of this study it is important for the urban planners and policy makers in the MENA countries to slow the rapid increase in urbanization. The level of energy consumption and CO2 emission in the MENA countries increased more than double. Thus slowing down the urbanization level can help reduce the level of pollution and energy consumption. In addition, the increased energy efficiency, implementation of energy savings projects, energy conservation, and energy infrastructure outsourcing reduce the level of pollution produced by urban areas.