The residential electrical load in the city of Mosul as well as in most of cities in Iraq, is the major problem for the administration of electricity distribution. Since this kind of load is increasing drastically compared with other loads such as industrial, agricultural tourism and others which are declining for the last two decades due to unstable condition of the county. The residential electrical load components must be determined to solve the problems resulting from the significant increase in this load. This research aims to conduct a field survey to find out and identify the components of the residential electrical load ratios and qualitative change in the months of the year. The survey was conducted in the city of Mosul in northern Iraq. The results were analyzed, and a number of recommendations were given to rationalize consumption.

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Quenching is known as the most critical step in the sequence of heat-treating operations. The objective of quenching is to preserve the solid solution formed at the solution heat-treating temperature, by rapidly cooling to some lower temperature, usually near room temperature. The scope of this study is to construct the forming limit diagram experimentally for aluminum alloy (2024-T3) sheet, as received and after Quenching from solid solution temperature. The results which have been obtained experimentally showed that at (6 hours) after Quenching, there is a considerable effect on the FLC, Quenching increases the FLC at the as received condition in the range of (19-31 %). : .

A B S T R A C TResidential electrical load in Iraq can be divided into five components, lighting, home appliances, heating, cooling, and water heating. Water heating component represents the largest residential electric load component in Iraq. The current research aims to test the possibility of using solar water heaters to supply hot water to residential units. Solar water heaters were added to a number of residential units in Mosul city, with the addition of a small electrical heater to provide supplementary heating. The readings of the total energy consumed, the energy consumed in the supplementary heating, the amount of water consumed and the water temperature in the solar heated tank, were recorded each day for a full year. The results were analyzed and compared with the case without the addition of solar heaters. The addition of solar water heater with supplementary heating leads to the reduction of the total consumption up to one-fifth of the total energy (19.19%).

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