Preferred Language
Articles
/
bsj-7584
Performance Evaluation of a Triple Concentric Tube Heat Exchanger Using Deionized Water and Oil-40
...Show More Authors

This study examines experimentally the performance of a horizontal triple concentric tube heat exchanger TCTHE made of copper metal using water as cooling fluid and oil-40 as hot fluid. Hot fluid enters the inner annular tube of the TCTHE in a direction at a temperature of 50, 60 and 70 oC and a flow rate of 20 l/hr. On the other hand, the cooling fluid enters the inner tube and the outer annular tube in the reverse direction (counter current flow) at a temperature of 25 oC and flow rates of 10, 15, 20, 25, 30 and 35 l/hr. The TCTHE is composed of three copper tubes with outer diameters of 34.925 mm, 22.25 mm, and 9.525 mm, and thicknesses of 1.27 mm, 1.143 mm, and 0.762 mm, respectively. TCTHE tube's length was 670 mm. Nusselt number, overall heat transfer coefficient, convective heat transfer coefficient (CHTC), friction factor and pressure drop were measured from the obtained experimental results and plotted in graphs against Reynold number and volumetric flow rate of water. These parameters appeared good results in the cooling process. Nusselt numbers increased linearly with DIW flow rate for both C1 and C2 reaching maximum values of 38.25 and 14.64 respectively. CHTC increased linearly with the DIW flow rate for both C1 and C2 reaching maximum values of 2934.3 and 871.7 respectively. Overall heat transfer coefficient of DIW reached maximum values of 296.36 and 251.4 at 35 l/hr for C1 and C2, respectively. Friction factor DIW in C1 and C2 decreased with the volumetric flow rate increases, reaching minimum values of 0.04 and 0.25 respectively. Pressure drop of DIW increased linearly with flow rate reaching maximum values of 81.4 and 4.31 for C1 and C2 respectively. This in turn leads to reduced TCTHE length and size leading to a decrease in the construction cost of the heat exchanger.

Scopus Crossref
View Publication Preview PDF
Quick Preview PDF
Publication Date
Wed Jun 30 2004
Journal Name
Iraqi Journal Of Chemical And Petroleum Engineering
Studying the Factors Effects on the Flowability of ZnO-CuO/γAl2O3 Catalyst Through Hopper Before Tableting Process
...Show More Authors

View Publication Preview PDF
Publication Date
Sat Sep 30 2017
Journal Name
College Of Islamic Sciences
Book of Musaka (by Imam Abu al-Qasim Abdul-Karim Muhammad ibn Abd al-Karim al-Rafii)
...Show More Authors

Al-Aziz's book was chosen as a subject for research as it is one of the important books in the Islamic world in general and the Shafi'i school in particular and its author Imam Abdul Karim bin Mohammed bin Abdul Karim Al-Rafi's, who in the doctrine of the jurisprudence has made prominent lines and left behind invaluable scientific treasures in the service of religion. Its importance is summarized as follows:
1. Being an explanation of the book (brief) of the argument of Islam Imam Ghazali (God's mercy), one of the five books adopted in Shafi'i jurisprudence.
2. His work is Imam Abu al-Qasim al-Rafii known for the brilliance of the investigation and the power of weighting in the doctrine.
3. It is considered an encyclopedia in Sh

... Show More
View Publication Preview PDF
Publication Date
Sun Jun 02 2019
Journal Name
Journal Of The College Of Languages (jcl)
The fragile world In Hi, Sadness Of Françoise Sagan: L’univers fragile dans Bonjour Tristesse De Françoise Sagan
...Show More Authors

The villa was incredible, summer was hot, and the Mediterranean Sea was so near.

      Scil lived happily with her father as they needed no one else. But the visit of a calm and intelligent women caused huge shift in this delightful mess. So, how can this threat be stopped?

      This novel displays to the reader a rich study of human soul to implicitly while being supported by short sentences and characterised  by persons living in a horrible way and  described in very short sentences.Thus,  Françoise Sagan’s imagination was enflamed, and so he shaped ethical imagery in the moste wonderful way in the novel Hi,  Sadness.

Rés

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Nov 07 2018
Journal Name
Iraqi National Journal Of Nursing Specialties
Assessment of mothers' practices toward children with steroid – sensitive nephrotic syndrome at pediatrics hospitals in Baghdad city
...Show More Authors

Objective(s): To assess mothers' practices toward children with steroid – sensitive Nephrotic Syndrome (SSNS) who
are visiting nephrology consultation units, and to find out the relationships between their practices and the
demographical data for mother and child.
Methodology: A descriptive study was carried out at nephrology consultation units of Baghdad pediatrics hospitals
(Child's Central Pediatric Teaching Hospital, Al-kadimiyia Teaching Hospital, and Welfare Teaching Hospital) started
from February 18th to the end of July 2009. A purposive sample of (80) mothers who company their children were
selected. The data were collected through a constructed questionnaire, with two parts; the first part is concerned with<

... Show More
View Publication Preview PDF
Publication Date
Sun Dec 31 2017
Journal Name
College Of Islamic Sciences
What was mentioned by Imam Al-Tirmidhi in his book Al-Sunan regarding the provisions of sales
...Show More Authors

The reason for my choice of the topic (what Imam Al-Tirmidhi mentioned in his book Al-Sunan regarding the provisions of sales) is that he mentioned many topics that affect people's lives, which are represented by commercial transactions and the exchange of benefits between them, so it became clear to them what is forbidden and what is not, aiming not to fall into the prohibited, and to achieve their interests, and relieve them of embarrassment. What we will see in the research.

 

View Publication Preview PDF
Publication Date
Sat Apr 25 2020
Journal Name
Indian Journal Of Forensic Medicine &amp; Toxicology
Flame Atomic Absorption Spectrophotometry Analysis of Heavy Metals in Some Food Additives Available in Baghdad Markets, Iraq
...Show More Authors

View Publication
Crossref (2)
Crossref
Publication Date
Fri Jun 30 2023
Journal Name
Iraqi National Journal Of Nursing Specialties
The Effect of Nurses Psychological Empowerment on Organizational Climate in Primary Health Care Centers in Kirkuk Governorate
...Show More Authors

Abstract

Objective(s): To evaluate the level of Psychological Empowerment among Nurses as perceived by their Point of View, and identify the differences in nurses' Psychological Empowerment with regard to age, gender, graduation level, and years of work employment. 

Methodology: A descriptive analytic design was conducted on nurses in Psycho-social health Units in Primary Health Care Centers in Kirkuk Governorate, to achieve the objectives of the study. A convenient (non-probability) sample of 84 nurses was selected. The data collected through self-report method for the period from 25th August to 10th October 2022. The questionnaire was adopted

... Show More
View Publication Preview PDF
Crossref (1)
Crossref
Publication Date
Thu Jan 02 2020
Journal Name
Journal Of The College Of Languages (jcl)
The Kurdish experiment in the process of translation (1898-1991): ئةزمووني كوردي لة ثرؤسةي وةرطيَرِاندا (189 – 1991
...Show More Authors

Translation as a human endeavor has occupied the attention of nations since it bridges the gab between cultures and helps in bringing out national integration. The translation of Kurdish literature started with personal efforts in which newspapers and magazines had played a vital role in supporting translation and paved the way for promoting the publication of Kurdish products.

      The bulk of the materials translated from Arabic exceeds that translated from other languages owing to the influence of religious and authoritarian factors.

The survey of the Kurdish journals was limited to the period 1898-1991 since it marked a radical and historic change represented by the birth of Kurdish journalis

... Show More
View Publication Preview PDF
Crossref
Publication Date
Sat Jan 02 2021
Journal Name
Journal Of The College Of Languages (jcl)
Usage Features of the phraseological units in Russian political Discourse: Особенности использования фразеологизмов в российском политическом дискурсе
...Show More Authors

This article examines the usage features of the phraseological units in Russian political discourse and the peculiarities of the phraseological units’ usage by politicians in their speeches.  The main focus is on the expressive and pragmatic functions of using phraseological units in political texts due to their evaluative and expressive nature.  The present article also examines the structural and stylistic changes of the phraseological units in political discourse.  Moreover, the work provides examples from the speeches of the Minister of Foreign Affairs of the Russian Federation S.V.  Lavrov.  As a result, the author comes to the conclusion that phraseological units make it possible to establish a contact be

... Show More
View Publication Preview PDF
Crossref
Publication Date
Mon Oct 01 2018
Journal Name
Journal Of Economics And Administrative Sciences
The Role of Knowledge Management in Small Project Management Afield Study in Oxygen Ahli Plant in Iraq
...Show More Authors

       Most of the literature on the management and application terkzat waved the last period on large organizations was the negligence  of  knowledge management in small organizations where research aims to find out knowleddge management, small projects  In oxygen Ahli plant in Iraq, and the fact the role of knowledge management in small projects from the standpoint of employees in order to achieve this used production method results.  The results showed that knowledge management has a role in the high level of productivity during the years 2010-2013. The results showed that knowledge management has a role in the high level of productivity during the years 2

... Show More
View Publication Preview PDF
Crossref