The present study involves experimental analysis of the modified Closed Wet Cooling Tower (CWCT) based on first and second law of thermodynamics, to gain a deeper knowledge in this important field of engineering in Iraq. For this purpose, a prototype of CWCT optimized by added packing under a heat exchanger was designed, manufactured and tested for cooling capacity of 9 kW. Experiments are conducted to explore the effects of various operational and conformational parameters on the towers thermal performance. In the test section, spray water temperature and both dry bulb temperature and relative humidity of air measured at intermediate points of the heat exchanger and packing. Exergy of water and air were calculated by applying the exergy destruction method on the cooling tower. Experimental results showed a significant performance improvement when using packing on the CWCT. It can be observed that the thermal efficiency for the CWCT with packing under a heat exchanger and CWCT with packing above the heat exchanger are approximately 40% and 25% higher than that of the CWCT without packing respectively. As another part of the experiment results, it is indicated that the exergy destruction is directly proportional to air flow rate, cooling water flow rate, inlet cooling water flow rate and inlet Air Wet Bulb Temperature (AWBT) whereas, it is inversely proportional with spray water flow rate. In comparison with the cooling capacity of the tower, it was found that the exergy destruction approximately less than 20%. Exergy efficiency behavior is inversely proportional with the behavior of the exergy destruction. Empirical correlations are obtained to predict water film heat transfer coefficient and air-water mass transfer coefficient considering the influences of operational parameters.
God bestowed upon the Imams of the Ahl al-Bayt (peace be upon them) knowledge and wisdom, in addition to give them virtue as long as it was not given to anyone from the worlds. knowledge have been enriched from them that cause pride.
Islam is a religion that God wanted to be a platform emerges from human steps in various walks of devotional and economic life, etc, so it went Islam, guids human beings being as successor of God on earth.
The result that the worship of man for the Lord, which is one of the reconstruction of the land that is the secret of the sustainability of human life on the ground, often urged the Sunnah on the reconstruction of the earth and the importance of planting them and paired the reconstruction work that obtained by the human reward which would Allah his home in the Hereafter, There construction of the earth does not involve just planting them; it takes many forms Maintaining them and not marring the form of reconstruction and
... Show MorePraise be to God, Lord of the Worlds, and prayers and peace be upon our master and beloved Muhammad and all his family and companions. As for what follows:
تتراوح ضريبة الارض ما بين 10%من المحصول (الشعير ) و 40 -50 من الخراج
There was a huge role in the history of a muslim woman and several books have mentioned that politically or in religion and even scientifically and socially which leaded a lot of women to look up to these women who helped in keeping the religion just in the right form for other generations
This research deals with the ideas of Imam Muhammad bin Al-Waleed bin Khalaf bin Sulaiman bin Ayyub , Al -Qurashi, The Moroccan, The Andalusian, Al-Maliki. He was known as Abu Bakr Al-Tartoushey , where thesis deals with the details of his personal life and as well as his scientific path as well as his works, and also covered the views of jurisprudence in the personal status and especially on the subject of divorce and inheritance,
٠ اش١جخ ٗزفقث ٌٟبِ ٟجعبؾٌّا تٔبغٌا ٟف بقزخِ ٟئبنل ( ًئاضل بساحم ) توهم ىلع ءىضلا طٍلسحو بلارم ءادأ ىلع اهرٍثأحو تٍوهملا اهحاءارجإو تمذخخسملا اهحاٍومح ثٍح نم تٍئاضملا تبساحملا دبثبغؾٌا . اسبِٙٚ د ءبمٌلأ ٟمبٌّا ـؾف ٍٝػ ض١وشزٌا يلاخ ِٓ خ١ٔٛٔبمٌا سِٛلأبث خفشؼٌّا ءٛم ٟف دب٠شؾزٌا ًجمزغٌّا ٍٝػ حشظٔ ٌا خجعبؾٌّا ْا شؽبجٌا ظزٕزعاٚ ذٍجٌٍ ٞدبقزللاا َذمزٌا خٍغػ غفد ٟف ُٙغر خ١ئبنم ، خجعبؾٌّا ٟف خِذخزغٌّا خض٠ذؾٌا ت١ٌ
... Show Moreas important aspects emerged related to the management of the caliphate and how it was transferred, and the clarification of the political trends and transformations at the end of their lives. In addition, how the Rightly Guided
مثل الوعي الطبقي اعلى مراحله لدى الفكر الماركسي المعاصر عند كل من روزا لوكسمبورغ وانطونيو غرامشي، ليس مجرد انعكاس للواقع وانما يكون بصورة جدلية من طريق انعكاس الوعي على الواقع وإعادة انتاجه فبعد ان كان الوعي هو نتاج تطور الواقع اصبح أداة في تطوير الواقع، أي تأثير البنى الفوقية في البنى التحتية (المادية التاريخية) وعدت ان الوعي الطبقي الثوري يتحقق بشكل عفوي، وبذور انطلاقة هي الاضرابات الجماهيرية، وأنكرت دور
... Show MorePsychological Counseling Services occupies a high position in the developed countries and that for its psychologist services for different sectors of the community members, and has been popularized until recently the wrong concept of the effect, that the psychological service is provided only to the owners of behavior is normal only, Vantage him neglect to provide psychological services a large segment of the community members who are in dire need of these services.
The counseling service is part of a global social movement seeking to emphasize the quality of life of the human and the emphasis on the value and dignity and the need to live a quiet lif
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