Fourth grade students

Year: 4

Academic Degree: Bachelor

Supervisor Type: Supervisor

Supervisor State: Ungraduated

Students' graduation projects in various specialized engineering scientific disciplines

Dr. Lecturer Ahmed Saadallah Salman

Dec 31, 2006 - Apr 3, 2025

Assistant Dean for Administrative and Financial Affairs
Northern Technical University
College of Oil and Gas Technology Engineering, kirkuk
ahmed.saadallah@ntu.edu.iq
ADFAA_Oil.gas.eng@ntu.edu.iq
Academic Degrees:
Kirkuk Technical Engineering College Bachelors 8/4/2003 Refrigeration and air conditioning engineering Iraq.
Gaziantep University Masters 31/12/2012 Mechanical Engineering/Thermal engineering, Turkey.
St. Petersburg Great State University Ph.D 16/12/2021 Mechanical Engineering/Thermal engineering Russia.

Lecturer and supervisor of students' graduation projects at the fourth stage [Student Affairs Officer 2012-2016 Kirkuk Engineering Technical College]

Sep 1, 2012 - Sep 1, 2016

2022-2023 [Department Rapporteur Fuel and Energy Technologies Engineering]

Sep 1, 2022 - Sep 1, 2023

Department Rapporteur
Fuel and Energy Technologies Engineering
Kirkuk Technical Engineering College

2023-2025 [Assistant Dean for Administrative and Financial Affairs Oil and Gas Technology Engineering College, Kirkuk]

Aug 22, 2023 - Present

Assistant Dean for Administrative and Financial Affairs
Oil and Gas Technology Engineering College, Kirkuk

Scientific Subjects Teaching [Doctor-lecturer]

Dec 31, 2006 - Present

Scientific Subjects Teaching
Doctor-lecturer
mathematics
Thermodynamics
Gas dynamics
Material strength
Refrigeration and air conditioning
refrigeration systems
Heat transfer
Industrial and occupational safety
Environmental pollution
Renewable energy
Sustainable energy
Student Graduation Projects / Fourth Stage

Prediction of the operational performance of a vehicle seat thermal management system using statistical and machine learning techniques

Aug 17, 2024

Journal Case Studies in Thermal Engineering

publisher ScienceDirect Elsevier

DOI https://doi.org/10.1016/j.csite.2024.104626

Issue 4

Volume 60

To assess and forecast the operational performance of a modified car seat for thermal management using an air conditioning system, statistical and machine learning (ML) models were used. By extending evaporator/condenser coils beneath the back and cushion surfaces of the car seat and using operational data on the HVAC system, such as seat temperature readings, an interval of operation was gathered. Using a data mining approach, statistically relevant factors and varying the compressor speed from 500 to 1600 rpm under various scenarios to model the system were selected. Utilizing key feature variables, our data-driven approach yielded predictions with favorable accuracy for the Coefficient of Performance (COP) of the HVAC system. By using the Akaike Information Criterion (AIC) to improve the Linear Regression (LR) model, the Root Mean Square Error (RMSE) dropped to 0.20, the Mean Absolute Error (MAE) dropped to 0.16, and the Coefficient of Determination (R2) increased to 98 %. The Random Forest (RF) model, optimized with hyperparameters, demonstrated moderate predictive capability, with RMSE (0.52), MAE (0.37), and R2 (94 %). Furthermore, polynomial feature augmentation, individual and combined predictor analysis, and iterative predictor combinations all improved predictive accuracy. Detailed information on the algorithms was given for the sake of other researchers.

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Air thermal management platform assessment in centralized and decentralized air-conditioning systems

Aug 17, 2024

Journal Journal of Thermal Analysis and Calorimetry

publisher Springer-Verlag

DOI https://link.springer.com/article/10.1007/s10973-024-13546-1

Issue 16

Volume 149

In both centralized and decentralized air-conditioning systems, the performance, sustainability, and efficiency of the systems in delivering thermal comfort within a specific area are assessed as part of the air thermal management platform evaluation process. The evaluation of air thermal management platforms entails a thorough examination of numerous elements, customized to the unique features of these systems, such as system components, energy efficiency, control systems, maintenance procedures, and environmental concerns. The study considers mathematical modeling of energy-efficient techniques based on meteorological data of cooperative centralized and decentralized air-conditioning systems for external air recirculation treatment. Three systems were considered: an independently functioning central air conditioner, a central system functioning together with a local air conditioner, and a central system operating together with an adiabatic humidifier. Technological aspects of cycle performance are shown to be dependent on the acceptable design capacity of the air cooler and the adiabatic humidifier air wet-bulb temperature limit. Increasing the setting capacities of the air cooler to 0.00786 kg m−2 s−1 and the adiabatic humidifier to 0.03864 kWh, the air flow rate decreases from 0.0072 to 0.004 kg m−2 s−1, and when the setting capacities of the air cooler are 0.01011 kg m−2 s−1 and the adiabatic humidifier is 0.04831 kWh, the air flow rate decreases to a minimum limit of 0.002 kg m−2 s−1. Comparing the annual heating, cooling, and humidification load consumption without and with utilization of the second air recirculation, for the heating load 39.48 and 5.01 kWh, the costs increased by a factor of 7.9; for the cooling load 1850 and 1320 kWh, the costs increased 1.4 times; and for the moisture load 331.5 and 1245 kg m−2 s−1, the costs decreased 3.8 times. The research conducted has led to the development of a methodology that combines the justification of energy-saving modes with formulated climatic tables and a probabilistic-statistical model. This methodology facilitates the selection of subsystem equipment’s AC setting capacities, the calculation of heating, cooling, and moisture load consumption at various times, and the technological scheme for heating and humidity air treatment. The refined AC can operate at peak efficiency and reduce energy loss thanks to this iterative approach. Moreover, this method's progressive design enables it to gradually increase in efficiency over time.

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COMPARISON OF DIFFERENT TECHNOLOGIES FOR HYDROGEN PRODUCTION FROM NATURAL GAS

Jan 2, 2024

Journal INTELLIGENT SYSTEMS IN PRODUCTION

publisher eLIBRARY ID: 56643004,,

DOI DOI: 10.22213/2410-9304-2023-4-101-108

Issue 4

Volume 21

This article presents an overview of the current state and prospects for the development of modern technologies related to the use of hydrogen in the energy sector. associated with the use of hydrogen in power engineering. The study considers the most common methods of hydrogen production from natural gas. Methane steam conversion (SMR) describes a method in which methane is converted into hydrogen and carbon dioxide. into hydrogen and carbon dioxide at high temperatures. Partial oxidation (POX) is a technology, which is based on the controlled oxidation of methane, resulting in the formation of a mixture of hydrogen, oxidizing gas and other components. Autothermal reforming is a process that combines the characteristics of steam conversion and partial oxidation, which significantly improves the efficiency of hydrogen production. The article also discusses the near-term prospects for the development of these technologies in the field of hydrogen energy. However industrial application of these technologies requires a high level of R&D at the pilot plant scale. The article also discusses the global energy system, energy sources, the history of hydrogen discovery, and hydrogen production methods. The methods of hydrogen production technologies are reviewed, with emphasis on technologies for producing hydrogen from natural gas. By comparing the advantages and disadvantages of each technology, as explained in the last part of the paper, several important conclusions were drawn. The vapor SMR methane conversion has the highest hydrogen production rate among the three technologies. The reaction rate of catalytic partial oxidation of methane is the fastest, but the reaction process requires pure oxygen, which presents a safety issue. Methane self-conversion does not require external heat and has the the lowest energy consumption. Methane steam conversion technology is environmentally safe, scientifically promising and one of the most efficient, but it has not yet been finalized for use on an industrial scale. on an industrial scale. It is necessary to develop new inexpensive catalysts and continuous reactor systems for the methane vapor conversion technology to make them economically viable.

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Methodology for considering climatic information during the analysis of the air conditioning systems energy efficiency

Nov 15, 2022

Journal AIP Conference Proceedings

publisher AIP Publishing

DOI https://doi.org/10.1063/5.0105521

Issue 1

Volume 2486

The article presents the analysis of normative information about external climate given in the form of estimated parameters of external air for warm and cold periods of the year. The requirements to the form of climatic information presentation and to its content are formulated. The information in the form of given tables can be used for solving the indicated tasks during the conceptual design of the air conditioning system. The article shows the approbation results of the considered form of climate information acquired while solving the practical tasks. Among these results, special attention is given to dependence of installation capacities of subsystems in the time of unavailability of the estimated parameters of the air environment in a premise. Besides, the described case proves that information about heat, cold, air, and water consumption during heat and humidity treatment of air in conditioning systems can be determined for various estimated periods of time. The results were obtained with an applied software that uses the recommended form of climate information presentation for the design of air conditioning systems.

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Justification of energy-efficient air treatment processes in air conditioning systems

Jun 13, 2021

Journal Bulletin of the International Academy of Refrigeration

publisher Federal State Autonomous Educational Institution of Higher Education "Saint Petersburg National Research University of Information Technologies, Mechanics and Optics"

DOI https://cyberleninka.ru/article/n/obosnovanie-energoeffektivnyh-protsessov-obrabotki-vozduha-v-sistemah-konditsionirovaniya

Issue 3

Volume 60

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Analysis of the energy efficiency of air conditioning systems based on the outdoor climate statistical model

Apr 19, 2021

Journal IOP Conference Series: Earth and Environmental Science

publisher eLIBRARY / MAH VESTNIK

DOI DOI 10.1088/1755-1315/866/1/012034

Issue 4

Volume 4

The analysis of outdoor climate normative information, given in the form of calculated parameters of outdoor air for warm and cold periods of the year, is given. The requirements to the form of presentation of climatic information and to its content are formulated. The information is presented in the form of tables of recurrence of outdoor parameters in two-dimensional intervals for different cities of the Russian Federation and the capital of Iraq, Baghdad. It is shown that the information in the form of these tables can be used for the tasks indicated in the article at the stage of conceptual design of air conditioning system. The results of approbation of the considered form of climate information implemented at practical tasks are demonstrated. Among these results, we should pay special attention to dependence of installation capacities of subsystems on the time of non-availability of the rated parameters of the air environment in a room. Moreover, it is shown by the example that information about heat, cold, air, and water consumption by heat and humidity treatment in air conditioning systems can be determined for various calculated periods of time. The results were obtained using an applied computer program that executes the recommended form of presentation of climate information for the design of air conditioning systems.

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Decentralized air conditioning systems

Mar 15, 2020

Journal Bulletin of the International Academy of Refrigeration

publisher Federal State Autonomous Educational Institution of Higher Education "Saint Petersburg National Research University of Information Technologies, Mechanics and Optics"

DOI https://cyberleninka.ru/article/n/detsentralizovannye-sistemy-konditsionirovaniya-vozduha

Issue 4

Volume 60

The material of the article is based on the theoretical provisions developed by Prof. A. A. Rymkevich for the implementation of which in the corresponding engineering techniques their further development is required. A decentralized air conditioning system (ACS) is considered for an object that includes two rooms or two working zones within one room with different types of loads. To formalize these loads, initial thermodynamic schemes (ITS) are used, which are described analytically (equations are not given here), and for a visual representation of ITS, an I-d diagram of the moist air is used. The pros and cons of single-zone ACS are disclosed, which are taken as the basic version. This means the energy costs consumed for heat and humidity treatment of air in these ACS are the reference values to which one should strive when comparing them with similar values of costs for other competing ACS options. Decentralized, multi-zonal and combined ACS are considered as competing options for ACS. The fundamental difference between these options is shown. The article deals only with decentralized ACS, which include a central system where the outside air is processed, and a local system that processes the recirculated air in the room. The tasks solved by local ACS are disclosed, depending on which these systems are divided according to their functional characteristics (i. e., according to the task or function they perform) into two groups: adjacent systems and (zonal) closers, the fundamental difference between which is in their influence on the change in loads in the premises, and consequently, on the ITS position change on the I-d diagram. It is shown which recirculation systems can perform the functions of adjacent systems and how they should be selected for decentralized ACS. The mechanisms of combining ITS of premises by means of adjacent systems into a common ITS are disclosed on the example of one of the combined computational zones. The content of the concept «the room is oriented towards central air conditioning» is revealed

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Requirements for climate information for air conditioning system design purposes

Apr 9, 2019

Journal Bulletin of the International Academy of Refrigeration

publisher Federal State Autonomous Educational Institution of Higher Education "Saint Petersburg National Research University of Information Technologies, Mechanics and Optics"

DOI https://cyberleninka.ru/article/n/trebovaniya-k-informatsii-o-klimate-dlya-tseley-proektirovaniya-sistem-konditsionirovaniya

Issue 4

Volume 60

The article analyzes the shortcomings of the form of presenting climate information currently used for the purposes of designing air conditioning systems. The analysis of these shortcomings is given. It is shown that the normative climate information given in SP 131.13330.2012 (SNiP 23-01-99*) "Construction Climatology" in the form of calculated parameters A and B for warm and cold periods of the year is not suitable for these purposes. Requirements for the form of presenting information and its content are formulated. The forms of presenting climate information close to the form proposed for use are analyzed. The information is presented in the form of tables: temperature-relative humidity; temperature-enthalpy; dry and wet bulb temperatures. It is shown that information in the form of these tables can be used to solve the problems outlined in the article, solved at the initial stage of design. The results of testing the considered form of climate information in solving practical problems are demonstrated. Among these results, special attention is paid to the dependence of the installation performance of the subsystems on the time of non-provision of the standardized parameters of the air environment in the room. It is also shown by example that information on the consumed flow rates of cold , heat , air and water during heat and humidity treatment of air in air conditioning systems can be determined for different calculated periods of time: for the year as a whole, for seasons of the year, by months, and also for shifts (eight hours) of the specified periods. These results were obtained using an applied computer program that implements the recommended form of presentation of information on the climate for the purposes of designing air conditioning systems.

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Formalization of climate information for the city of Baghdad

Feb 5, 2018

Journal Almanac of Scientific Works of Young Scientists of ITMO University

publisher eLIBRARY / MAH VESTNIK

DOI https://doi.org/10.1016/j.csite.2024.104626

Issue 4

Volume 60

The article analyzes the shortcomings of the climate information presentation form, which is currently used for the designing air conditioning systems. An analysis of these shortcomings is made. It is shown that the regulatory climate information provided in SNiP 23‑01‑99 (Construction climatology in the form of design parameters A and B for the warm and cold period of the year) is not suitable for these purposes. The requirements for the form of information presentation and its content are formulated. Analyzing the presentation of climate information is close to the proposed use of the form. This information is in the form of tables: temperature — relative humidity; temperature — enthalpy; temperature by dry and wet thermometers. It is shown that information in the form of the specified tables can be used to solve the tasks outlined in this article, which are solved at the initial design stage. The results of approbation for the considered form of climate information in solving practical problems are demonstrated. Among these results, special attention is paid to the dependence of the installation capacity of the subsystems on the time of lack of standardized parameters of the air environment in the room. The example also shows that information on the consumption of cold, heat, air, and water during heat and moisture treatment of air in air conditioning systems can be determined for different estimated periods of time: for the year as a whole, for the seasons of the year, by months, and also for shifts (eight hours) of periods specified. These results were obtained using a computer program that implements the recommended form of presenting information about climate for designing air conditioning systems. Keywords: air conditioning system, climate information, subsystem installation performance, operating costs, t-d-table, elementary climate platforms, energy-saving modes, estimated time period, I-d-diagram of humid air

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