Soil temperature profile for some new cities in egypt: experimental results and mathematical model

Egypt nowadays passes through an energy crisis in spite of the development of the building sector, represented by the plans of the Egyptian government to establish new cities over wide and different areas of the country, Earth-air heat exchanger (EAHE) systems are of the promising systems by which building electricity consumption can be reduced; through the reduction of energy needed for carrying air conditioning loads. Many parameters affecting the performance of such systems one of which is the soil temperature distribution profile. The aim of this research is to investigate experimentally the soil temperature variation with depth, in the avenue of the Egypt Japan university of Science and Technology (EJUST), New Borg Al-Arab city, Alexandria, Egypt during March 2015. In addition, an analytical model was developed to predict soil temperature distribution profile. The validation of the analytical model with the experimental results gave an error and correlation coefficient values of 5.59 % and 98 % respectively. The validated model was used with six different new cities in different areas in Egypt with four different ground surface cover conditions. The results of the model show that the type and nature of the surface cover affects directly the soil temperature profile especially when increasing the clay percentage.