Document Details
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Document Type |
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Project |
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Document Title |
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Impact properties of composite materials reinforced fiber (to test materials by drop hammer). خواص الصدم للمواد المركبة المقواة بالألياف (لاختبار المواد بواسطة المطرقة الساقطة). |
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Document Language |
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Arabic |
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Abstract |
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This study developed from the reality of the enormous energy consumption and increasing in the Kingdom of Saudi Arabia, which consumes between 60-70% of the electricity generated in the field of air conditioning. Putting this enormous consumption a lot of concern and serious reflection on the future plans for the energy sector. Have been developed many ways to keep energy saving many of them in advanced stages now. Recently the use of storage systems snow in the technology of air conditioning in many large buildings in the city of Riyadh and elsewhere in the Kingdom, not to mention the use of large in other countries, whether in the form of storage ice or chilled water, which reflects the importance of this technology and economic feasibility of their use in the field of air conditioning air.
Was to explain the development of all mathematical equations related to the process of formation ice on the file may in general terms was adopted analysis Turi bilateral, which makes the analysis a series of cases of composition of ice directly and that used the medium Alnbaradbesorh directly or indirectly, or those used by the intermediate cooling secondary, such as glycol. Have been proposed system of energy storage snowy simplified, was chosen as the storage capacity of about 1000 tons cooling and consists of a copper pipe diameter of 12.5 mm and a length of 700 meters to get to 37 tons of snow per hour, and by studying the performance of the reservoir ice was noted that in the case of a roasting in the file , this leads to a decrease in the mass of ice formed and that the average composition of ice is at least 30% of the average ideal (theoretical), which indicates the need to take this ratio into account when estimating the size of the reservoir and ice because the cost of storage tanks snow depends on storage capacity and evaluate the SAR per kilowatt hour.
Consists of central air conditioning in the Haram al-Sharif from 32 chilled water cooling with a maximum capacity of 420 tons of cooling per hour for each scheme and pointed out pregnancy for one day, maximum load up to 5290 tons of cooling per hour and the average 4065 tons of cooling per hour. We have been analyzing the proposal to use the storage system to a snowy two different: The first possibility, the storage part to store 11,448 tons of cooling in 4 hours and the study showed a cost of about 1.38 million riyals, which is the amount of storage is useless now. However, if the tariff 0.06 riyals per kilo watt hour in normal times and 0.26 riyals per kilowatt hour during peak periods, the interest cost marginally during the 10 first year, to pay the cost of the reservoir, snow, and the period that followed Faisal savings daily to 1718 SR . The second possibility, a store full of the amount of snow it results in savings of SAR 14,843 per day after the payment of the initial cost. Clear that the second possibility is of economic feasibility, even if they reach the tariff to the point of equality between cost and revenue, which is 0.0776 SR per kilowatt hour. We have been building and unit testing include file for the work of snow along the 75 m and ethylene glycol, which was cooled to oC 11 - the coefficient of thermal engineering department and is ready for the future extension of the current study. |
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Publishing Year |
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1417 AH
1997 AD |
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Added Date |
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Wednesday, April 30, 2008 |
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Researchers
| سامي سعيد حبيب | habib, sami saeed | Investigator | Doctorate | |
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