الفهرس 
Degree-Days research in regional countriesOnly 14 pages are availabe for public view
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Abstract
Residential and commercial buildings drain around 40% of the world’s essential energy. Normally, seasonal climatic conditions have an effect on the electrical energy consumption in buildings. One of the main strategies utilized for estimating electrical energy consumption in construction is the ”Degree-Days Methods”. The importance of Degree-Days has arisen in the latest 35 years. Degree-Days methods are considered simple, accurate and reliable techniques for cooling/heating power consumption analysis. Calculating Degree-Days depends on temperature measurements for a certain geographic area over a certain span of time. Consequently, these methods can provide an easy technique for the estimation of month-to-month or annual electricity consumptions of air conditioning systems. In addition its easiness in calculations, development over the years made it possible to include the latent heat (inhabitants, supplies, and so on) and sun radiation. In this way, calculating the actual cost of electrical power consumption became more realistic and reliable in electrical power estimation in real buildings. However, this requires complete temperature documents and geoclimatic data for the required assessment building. In this thesis, cooling degree-days models are explained, exhibited and used for electrical power calculations. Geoclimatic data, which is used for degree-days calculations are collected to most cities in Egypt for a time v span of 10 years. Such data ensures the coverage of every climatic zone of the country. In the same time, five common degree-days methods are studied, discussed, compared and programmed in a MATLAB software and they are connected with the temperature database built for Egypt. The most efficient and comprehensive method for degree-days calculation was found to be the sol-air method. This method considers the impact of both the sensible heat transmission and the latent (inward and outside) cooling load. It additionally considers the impact of solar heat gain on the cooling degree-days unit. Correlations between the consequences of the introduced software model and cooling degree-days units computed from direct surrounding temperature records are shown. Moreover, there is extremely limited and out of date distributed data for the heating and cooling degree-long periods of Egypt. In this examination, every year everyday heating and cooling degree-days for a number of areas of Egypt are constructed up by using making use of 10 years estimated records for more than a few balance temperatures. The information is exhibited in tables and figures though heating and cooling degree-day contour maps of Egypt have been created. Such contour maps were used for cooling/heating load estimation using the most favorable and economic method, this method is the sol-air method. A case study for verification was presented with a commercial building. Verification was implemented using a commercial cooling/heating load estimation software (HAP). The results have shown vi the near resemblance of the consumed energy and consequently the required costs. More simulation results were added related to wall insulation. Three different materials were used for wall insulation (half red brick, Double wall of half brick with 5cm air gap in between and Double wall of half brick with additional internal 5cm of expanded polystyrene thermal insulation layer) and the suitable material was proposed for the suggested case study building.