الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
1. One main program and three subprograms were developed to determine the system design and to describe the performance of a prototype solar furnace. 2. The main program was developed to determine the furnace heating load required to dry unfired bricks. The three subprograms were developed and connected with the main program to predict the furnace brick temperature, the furnace ground temperature distribution, and the air temperature in the Solar furnace false bottom, respectively. 3. The maximum heating load required in the solar furnace was computed by the simulation model. It was equal to 916.7 Watt. This value was used afterwards for sizing the heat exchanger installed inside the furnace to provide the interior recommended air temperature. 4. The thermal storage tank was also designed using the computer output results of the heating load. 5. Three different brick mixes were carried out and used on the laboratory tests after drying on the solar furnace. Forty brick of each mix were used in the laboratory tests. 6. The three different brick mixes were geopolymer brick, geopolymer and plastic, and recycling geopolymer brick & plastic. The laboratory tests included the mechanical properties of bricks such as compressive strength, porosity, and water absorption. 7. The laboratory tests indicated that the recycled geopolymer brick and plastic mix after 28-day curing period was the strongest mix. The compressive strength with this mix reached up to 582 kg /cm2 (5.709 k N/ cm2). 8. The lowest value of porosity was 8.38% for the geopolymer brick and plastic, while the greatest value of 11.73 % was after 28 days curing period. 9. The lowest water absorption values were 5.2% &10% after 28-day curing period for the geopolymer brick and plastic and red brick, respectively.
10. ANOVA tables indicated that there were high significant differences (99 %) of compressive strength among the three new brick mixes. 11. Significant differences were also detected for porosity among the different brick mixes. However, no significant differences were detected for water absorption among the three different break mixes. 12. The recycled geopolymer brick and plastic mix material was highly recommended as a new unfired friendly brick. It had the greatest compressive strength of 582 kg/cm2 (5.709 k N/ cm2). It had also low values of water absorption and porosity in comparison with other mixes roughly around 6.1% and 9.9 %, respectively.