الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This practical study relates to heat transfer with mixed convection inside a partially filled with a porous material with constant heat flux. The pipe has a length of 500 mm and 50 mm diameter and made of red copper with high thermal conductivity. The experimental study takes place in two stages through the study of heat transfer on a completely empty pipe and a second stage thermal heat transfer through porous media, where porous materials are used in many industrial applications, most notably solar collectors, heat pipes and heat exchangers and also in refrigeration and air conditioning. A porous material is made of brass material of 0.85 porosity was used. The effect of porous material addition with different filling ratios was 0.25, 0.50.0.75 and 1. Two methods of filling the tube with porous material with the same direction of air flow are studied. Also, the effect of tube inclination angle with heat transfer rates and pressure DROP for air inlet and outlet are studied. Experimental results of air flow inside the tube were obtained at constant heat flux of 715W/m2 and all experiments are conducted for a wide range of Richardson numbers 0. 0.05 ≤ Ri ≤ 1 and Reynolds range, 1600 ≤ Re ≤ 25608. Many of the manufacturing procedure on the pipe, laboratory heat transfer Faculty of Industrial Education, Suez University. The results of the first stage of the study of heat transfer on an empty pipe increased by increasing the rate of heat transfer with increasing air velocity, the effect from the pipe inclination angles from 0 to 90 is very small, and lower air velocity at Reynolds number 1600 was more effective for convection heat transfer as the outlet velocity increased by 42% and increased by 2.6% at Reynolds number 25608. In the second phase of the results of the addition of porous material, the negative effect of full filling ratio the entire pipe with the porous material was shown to increase the thermal conductivity inside the pipe, while the effect of adding porous material was more effective at filling 0.75 at Reynolds number1500, in the normal direction of filling ratio of the porous material. A filling ratio of 0.025 at Reynolds 1500, 4801, 7202, is shown in the reverse filling ratios of the porous material is enhanced the heat transfer.