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.
In recent years, the attention of the international community and intergovernmental and non-governmental organizations has grown into a new dimension of population displacement, called displacement within the country as a result of conflicts and the expansion of tacit groups, using sentences to describe such conflicts as "identity-based conflict", "ethnic conflict" "Sectarian conflict", in an attempt to determine the nature and characterization of those conflicts. In such conflict-stricken conditions, the value of a citizen - a person not directly involved in the conflict - is measured by the potential gains that that person has made to the conflicting parties, as civilians have been indirect victims of military operations, Favor
... Show MoreDying poetry ,last felt the man to say apriorior improvisation during entry in to the
context of the death while going through it, or distracted by the death , before the soul went
out the duration of a brief may not exceed the minutes , with out pious or pen or vain , may
have been exercised in his daily life, compelled or for the benefit.
The discussion dealt with the meaning of dying, then presented its article with three
topics;
First; What was said in accepting the death.
Second; what was said in the reguest fo death.
Third; what was said to ignore the death.
This lesson as well as poetry style andcream and the imeanings and ideas and nages and
rhetorical rhythm. To achieve this, adopted solid sources a
اجري هذا البحث للتعرف على "اثر استخدام طريقة الاكتشاف في تحصيل تلميذات الصف السادس الابتدائي وتنمية المهارات الاجتماعية لديهن في مادة التاريخ" ،واقتصرت عينة البحث الحالي على تلميذات الصف السادس الابتدائي في مدرسة زيد بن ثابت للبنات في مدينة الموصل حيث تكونت عينة البحث من (60)تلميذة تم توزيعهم بشكل متساو الى مجموعتين احداهما تجريبية تدرس باستخدام طريقة الاكتشاف وعددها (30) تلميذة في حين درست المجموع
... Show Moreيتناول البحث دراسة مقارنة بين القوانين المدنية والقانون الانكليزي لسلطة المحكمة في تنفيذ الالتزام العقدي على حساب المدين
يهدف البحث الى تطبيق إدارة القيمة االجمالية في تحسين تصميم عملية أنتاج معجون االسنان في مصنع المامون التابع للشركة العامة للمنتوجات الغذائية. وقد تمثلت مشكلة البحث في أن الشركة المبحوثة ال تقوم بقياس فاعلية تصميم العمليات فهي تعاني من ضعف في تحليل فاعلية تصميم العمليات في إطار مت ازمن مع أسلوب تطبيق إدارة القيمة االجمالية ، فضالً عن عدم اعطاء االنتباه الكافي لموضوع كلف المنتجات واسعار البيع ضمن ما يسمى بقيم
... Show MoreTax justice is one of the important principles that any tax system seeks to achieve because it is an important and important pillar of the tax because it has negative repercussions on the tax accounting process on the one hand and the low tax revenues on the other hand. Therefore, countries have sought through their tax systems to use methods and methods In the process of estimating taxable incomes to achieve that justice depending on the awareness of their communities. The method adopted differs from one country to another according to the knowledge and understanding of the society of that state for taxation and its role in economic, social and political life. In Iraq, the General Authority for Taxation Methods of estimating taxable inc
... Show MoreThe study falls in Five chapters as follows:
Chapter One : definition of the Study including:
1. The problem of the study: the current study tries to answers two questions;
First: the effectiveness of the performance of the applicants in the department of Quran
Sciences and Islamic Education in the colleges of Education according the point of view of
their supervisors.
Second: what is the future vision for teacher training according to the assessment of the
performance of the applicant students?
2. The importance of the study: the application or the field training is of an important role
in the process of training the students for teaching; as it is considered the real scale of
success in the processes of ac
التعريف بالبحث
اهمية البحث والحاجة اليه :.
اللغة وظيفة اساسية الا وهي التواصل ولقد زدادت الحاجة في هذا العصر الى تعلم اللغات والاحاطة بها اكثر من اي وقت مضى يوصفها الاساس الذي يعتمد عليه في تعلم المواد الاخرى .
فاللغة اداة التفكير ونشر الثقافة في بلدان كثيرة مثل بلاد الاندلس التي اشرقت منها الحضارة في ا
... Show MoreThe research aims to know the impact of using the strategy (think-tac-toe) in the achievement of Biology subject for female students of fourth grade scientific branch. The research sample consisted of 70female students the of fourth Grade scientific Branch . The students were divide randomly, equally to two groups, experimental and control group. the two groups are equaled in the variable ( intelligence, age, previous information, former achievement of biology subject ) and the strategy applied over the entire semester. built an achievement test and it has been the expense of validity, and the reliability and The psychometric properties, and the data were analyzed statistically by recourse to Statistical package SPSS, the results showed
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