Energy Efficiency Sector Research Articles

Analysis of sectoral energy and exergy use of Saudi Arabia

This paper presents the analysis of sectoral energy and exergy utilization of Saudi Arabia by considering the energy and exergy flows for the 12 years between 1990 and 2001. Sectoral energy and exergy efficiencies are obtained for the subsectors and the devices used in each sector. Energy and exergy flow diagrams for Saudi Arabia are also presented, respectively, to illustrate the situation on how energy and exergy efficiencies vary in each sector. The residential sector appears to be the most energy efficient sector, and the industrial sector to be the most exergy efficient. It is believed that the current methodology is useful for analyzing sectoral energy and exergy utilization, which will help Saudi Arabia with energy savings through energy efficiency and/or energy conservation measures. It is also be helpful to establish standards to facilitate application in various sectors and processes for a sustainable energy planning. Copyright © 2004 John Wiley & Sons, Ltd.

Energy and exergy use in public and private sector of Saudi Arabia

In this paper, we deal with the analysis of energy and exergy utilization in the public and private sector of Saudi Arabia by considering the energy and exergy flows for the years between 1990 and 2001. Energy and exergy analyses for the public and private sector are undertaken to study the energy and exergy efficiencies. These sectoral efficiencies are then compared, and energy and exergy flow diagrams for the public and private sector over the years are presented, respectively. Energy and exergy efficiencies of the public and private sector are compared for its six sub-sectors, namely commercial, governmental, streets, Mosques, hospitals and charity associations, particularly illustrated for the year 2000. Hospital sub-sector appears to be the most energy efficient sector and government sub-sector the most exergy efficient one. The results presented here provide insights into the sectoral energy use that may assist energy policy makers for the country. It is believed that the present techniques are useful for analyzing sectoral energy and exergy utilization, and that they provide Saudi Arabia with energy savings through energy efficiency and/or energy conservation measures. It is also be helpful to establish standards to facilitate application in industry and in other planning processes such as energy planning.

Energy and exergy use in the industrial sector of Saudi Arabia

This paper deals with the analysis of energy and exergy utilization in the industrial sector of Saudi Arabia by considering the sectoral energy and exergy flows for a period of 12 years from 1990 to 2001. Oil and gas, chemical and petrochemical, iron and steel, and cement are identified as the four essential subsectors in the industrial sector. Sectoral energy and exergy analyses are conducted to study the variations of energy and exergy efficiencies for each subsector throughout the years, and these heating and overall energy and exergy efficiencies are compared for the four subsectors. In this regard, an example illustration is presented for the year 2000. The chemical and petrochemical subsector appears to be the most energy-efficient sector, and the iron and steel subsector the most exergy-efficient one. A comparison of the overall energy and exergy efficiencies of the Saudi Arabian industrial sector with the Turkish industrial sector is also presented for the year 1993. Although the sectoral coverage is different for each country, it is still useful to illustrate the situation on how sectoral energy and exergy efficiencies vary. The Turkish industrial sector appears to be more efficient for that particular year. It is believed that the technique presented here is a useful tool for analysing sectoral and subsectoral energy and exergy utilization. Such energy and exergy studies help a country to identify major losses and to determine the true magnitudes of these losses.