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Theoretical Prediction of Optimum Chilled Water Distribution Configuration in Air Conditioning Terminal Unit
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 The distribution of chilled water flow rate in terminal unit is a major factor used to evaluate the performance of central air conditioning unit. In this work, a theoretical chilled water distribution in the terminal units has been studied to predict the optimum heat performance of terminal unit. The central Air-conditioning unit model consists of cooling/ heating coil (three units), chilled water source (chiller), three-way and two-way valve with bypass, piping network, and pump. The term of optimization in terminal unit ingredient has two categories, the first is the uniform of the water flow rate representing in statically permanents standard deviation (minimum value) and the second category is the maximum heat transfer rate from all terminal units. The hydraulic and energy equations governing the performance of unit solved with the aid of FORTRAN code with considering the following parameters: total water flow rate, chilled water supply temperature, and variable valve opening. It was found that the optimum solution of three-way valve case at 8°C water supply temperature, 0.12 kg/s total water flow rate and valve opening order (valve 1: 100%, valve 2: 100% and valve 3: 75%) with total heat rate (987.92 Watt) and standard deviation (1.181E-3). Also, for the two-way valve case the results showed that the optimum condition at 8°C water supply temperature, 0.12 kg/s total water flow rate and valve opening order (valve 1: 75%, valve 2: 75% and valve 3: 50%) with total heat rate and standard deviation (717Watt) and (5.69E-4) respectively.

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Publication Date
Sun Mar 26 2023
Journal Name
Arab Science Heritage Journal
تمظهرات الإيهام في العصر الإسلامي والأموي
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In this research, trying to highlight the reasons for the illusion, and do not want to repeat what the previous scholars and researchers from the ancients and modernists said, but to continue from where they ended, as the blogging has undergone several images that influenced the nature of the narrations, and their proximity to the truth according to the whims of the authority, or the narrator's whims and inclinations and any destination. Here we don't mean bees and plagiarism... It goes beyond the fact that traffic is made to the whims of those who write or write to it, or in it a little bit of truth and then be framed, to add exaggeration and exaggeration to it.

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Publication Date
Sun Apr 28 2019
Journal Name
Arab Science Heritage Journal
السياق السياق وأثره في الدلالة اللغوية
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Context has a great value in determining meanings and understanding speech as well as it has a significant impact on interpretation of the sacred text (Holy Quran) since it needs to be carefully understood by knowing the different circumstances

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Publication Date
Sun Jan 17 2021
Journal Name
Arab Science Heritage Journal
الجانب السياسي في شعر معروف الرصافي
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The poet Maarouf Al-Rusafi lived in an anxious era of our intellectual history at the end of the nineteenth and first half of the twentieth century, which is the stage of the launch of the Enlightenment movement in the Arab East with the great political and social changes that witnessed this stage that had an influential

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Publication Date
Sun Jul 03 2011
Journal Name
Journal Of Educational And Psychological Researches
عمالة الاطفال في العراق " الاسباب والحلول "
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لقد عرفت بلادنا ظاهرة ( اطفال الشوارع ) والتي تشمل عمالة الاطفال والمتشردين والمتسولين ، فتحولت من مشكلة على نطاق نسبي الى ظاهرة واسعة جداً تتضمن المخاطر المصاحبة لها ، إذ إنها ظاهرة منتشرة جداً في جميع المدن العراقية تصف في كثرة انتشارها في المناطق المليئة بالسكان .

إن ظاهرة عمالة الاطفال والتي ينصب عليها إهتمامنا في هذا البحث تشير الى نشاطات تقع خارج نطاق قوانين العمل وشروطه الاجتماعية ،

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Publication Date
Tue Jan 29 2019
Journal Name
Arab Science Heritage Journal
منهج ابن كثير في السيرة النبوية
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جاء ابن كثير في عصر نشط فيه التأليف في كل فن من فنون الدراسات الدينية والعربية، ومن الطبيعي أن يكون التأليف في ميدان السيرة النبوية مواكبًا لهذا النشاط الذي استقى مواده ونصوصه من الثروة الضخمة من الكتب والآراء والروايات التي سجلها العلماء والمحدثون والحفاظ قبل ذلك العصر.

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Publication Date
Sat Jan 01 2005
Journal Name
Journal Of The College Of Languages (jcl)
Etre et Avoir Principaux auxiliaires de la langue francaise
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Etre et Avoir Principaux auxiliaires de la langue francaise

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Publication Date
Sun Oct 01 2006
Journal Name
Journal Of Educational And Psychological Researches
التكوين الاجتماعي والثقافي ودورهما في التنميةالمستدامة
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ان العلاقة بين البناء الأجتماعي والثقافي والتنمية المستدامة ، علاقة عضوية ومتبادلة التأثير ، فالبناء الأجتماعي هو أحد الأعمدة الرئيسة الذي تدور حوله عمليات التنمية المستدامة . وبالثقافة يصنع الأنسان القيم الفكرية والروحية والمادية ، ويترجم فلسفته الى أنماط سلوكية ، ومواقف حياتية ، فبغير الثقافة تبقى الموارد البشرية والطبيعية مجرد خامات أولية غير موظفة لصالح الأنسان والمجتمع . فالتنمية الأجتماعية وا

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Publication Date
Thu Nov 12 2020
Journal Name
Arab Science Heritage Journal
المد والانحسار الفاطمي في بلاد المغرب
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The subject of Fatimid ebb and flow in Morocco is of a great importance, as it provides an inductive look at what the conditions of Morocco were in that era

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Publication Date
Wed Jan 17 2018
Journal Name
المجلة السياسية والدولية
الاستراتيجية الأمريكية في اقليم جنوب اسيا
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دراسة طبيعة الاستراتيجية الامريكيه في اقليم جنوب آسيا وصراعات القوى الإقليمية الهند وباكستان

Publication Date
Fri Feb 01 2019
Journal Name
Journal Of Economics And Administrative Sciences
Bayesian methods to estimate sub - population
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The aim of the research is to estimate the hidden population. Here، the number of drug users in Baghdad was calculated for the male age group (15-60) years old ، based on the Bayesian models. These models are used to treat some of the bias in the Killworth method Accredited in many countries of the world.

Four models were used: random degree، Barrier effects، Transmission bias، the first model being random، an extension of the Killworth model، adding random effects such as variance and uncertainty Through the size of the personal network، and when expanded by adding the fact that the respondents have different tendencies، the mixture of non-random variables with random to produce

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